1 /* 2 * Copyright 2011 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "GrGLGpu.h" 9 10 #include <cmath> 11 #include "../private/GrGLSL.h" 12 #include "GrBackendSemaphore.h" 13 #include "GrBackendSurface.h" 14 #include "GrFixedClip.h" 15 #include "GrGLBuffer.h" 16 #include "GrGLGpuCommandBuffer.h" 17 #include "GrGLSemaphore.h" 18 #include "GrGLStencilAttachment.h" 19 #include "GrGLTextureRenderTarget.h" 20 #include "GrGpuResourcePriv.h" 21 #include "GrMesh.h" 22 #include "GrPipeline.h" 23 #include "GrRenderTargetPriv.h" 24 #include "GrShaderCaps.h" 25 #include "GrSurfaceProxyPriv.h" 26 #include "GrTexturePriv.h" 27 #include "GrTypes.h" 28 #include "SkAutoMalloc.h" 29 #include "SkHalf.h" 30 #include "SkJSONWriter.h" 31 #include "SkMakeUnique.h" 32 #include "SkMipMap.h" 33 #include "SkPixmap.h" 34 #include "SkSLCompiler.h" 35 #include "SkStrokeRec.h" 36 #include "SkTemplates.h" 37 #include "SkTraceEvent.h" 38 #include "SkTypes.h" 39 #include "builders/GrGLShaderStringBuilder.h" 40 41 #define GL_CALL(X) GR_GL_CALL(this->glInterface(), X) 42 #define GL_CALL_RET(RET, X) GR_GL_CALL_RET(this->glInterface(), RET, X) 43 44 #define SKIP_CACHE_CHECK true 45 46 #if GR_GL_CHECK_ALLOC_WITH_GET_ERROR 47 #define CLEAR_ERROR_BEFORE_ALLOC(iface) GrGLClearErr(iface) 48 #define GL_ALLOC_CALL(iface, call) GR_GL_CALL_NOERRCHECK(iface, call) 49 #define CHECK_ALLOC_ERROR(iface) GR_GL_GET_ERROR(iface) 50 #else 51 #define CLEAR_ERROR_BEFORE_ALLOC(iface) 52 #define GL_ALLOC_CALL(iface, call) GR_GL_CALL(iface, call) 53 #define CHECK_ALLOC_ERROR(iface) GR_GL_NO_ERROR 54 #endif 55 56 //#define USE_NSIGHT 57 58 /////////////////////////////////////////////////////////////////////////////// 59 60 static const GrGLenum gXfermodeEquation2Blend[] = { 61 // Basic OpenGL blend equations. 62 GR_GL_FUNC_ADD, 63 GR_GL_FUNC_SUBTRACT, 64 GR_GL_FUNC_REVERSE_SUBTRACT, 65 66 // GL_KHR_blend_equation_advanced. 67 GR_GL_SCREEN, 68 GR_GL_OVERLAY, 69 GR_GL_DARKEN, 70 GR_GL_LIGHTEN, 71 GR_GL_COLORDODGE, 72 GR_GL_COLORBURN, 73 GR_GL_HARDLIGHT, 74 GR_GL_SOFTLIGHT, 75 GR_GL_DIFFERENCE, 76 GR_GL_EXCLUSION, 77 GR_GL_MULTIPLY, 78 GR_GL_HSL_HUE, 79 GR_GL_HSL_SATURATION, 80 GR_GL_HSL_COLOR, 81 GR_GL_HSL_LUMINOSITY 82 }; 83 GR_STATIC_ASSERT(0 == kAdd_GrBlendEquation); 84 GR_STATIC_ASSERT(1 == kSubtract_GrBlendEquation); 85 GR_STATIC_ASSERT(2 == kReverseSubtract_GrBlendEquation); 86 GR_STATIC_ASSERT(3 == kScreen_GrBlendEquation); 87 GR_STATIC_ASSERT(4 == kOverlay_GrBlendEquation); 88 GR_STATIC_ASSERT(5 == kDarken_GrBlendEquation); 89 GR_STATIC_ASSERT(6 == kLighten_GrBlendEquation); 90 GR_STATIC_ASSERT(7 == kColorDodge_GrBlendEquation); 91 GR_STATIC_ASSERT(8 == kColorBurn_GrBlendEquation); 92 GR_STATIC_ASSERT(9 == kHardLight_GrBlendEquation); 93 GR_STATIC_ASSERT(10 == kSoftLight_GrBlendEquation); 94 GR_STATIC_ASSERT(11 == kDifference_GrBlendEquation); 95 GR_STATIC_ASSERT(12 == kExclusion_GrBlendEquation); 96 GR_STATIC_ASSERT(13 == kMultiply_GrBlendEquation); 97 GR_STATIC_ASSERT(14 == kHSLHue_GrBlendEquation); 98 GR_STATIC_ASSERT(15 == kHSLSaturation_GrBlendEquation); 99 GR_STATIC_ASSERT(16 == kHSLColor_GrBlendEquation); 100 GR_STATIC_ASSERT(17 == kHSLLuminosity_GrBlendEquation); 101 GR_STATIC_ASSERT(SK_ARRAY_COUNT(gXfermodeEquation2Blend) == kGrBlendEquationCnt); 102 103 static const GrGLenum gXfermodeCoeff2Blend[] = { 104 GR_GL_ZERO, 105 GR_GL_ONE, 106 GR_GL_SRC_COLOR, 107 GR_GL_ONE_MINUS_SRC_COLOR, 108 GR_GL_DST_COLOR, 109 GR_GL_ONE_MINUS_DST_COLOR, 110 GR_GL_SRC_ALPHA, 111 GR_GL_ONE_MINUS_SRC_ALPHA, 112 GR_GL_DST_ALPHA, 113 GR_GL_ONE_MINUS_DST_ALPHA, 114 GR_GL_CONSTANT_COLOR, 115 GR_GL_ONE_MINUS_CONSTANT_COLOR, 116 GR_GL_CONSTANT_ALPHA, 117 GR_GL_ONE_MINUS_CONSTANT_ALPHA, 118 119 // extended blend coeffs 120 GR_GL_SRC1_COLOR, 121 GR_GL_ONE_MINUS_SRC1_COLOR, 122 GR_GL_SRC1_ALPHA, 123 GR_GL_ONE_MINUS_SRC1_ALPHA, 124 }; 125 126 bool GrGLGpu::BlendCoeffReferencesConstant(GrBlendCoeff coeff) { 127 static const bool gCoeffReferencesBlendConst[] = { 128 false, 129 false, 130 false, 131 false, 132 false, 133 false, 134 false, 135 false, 136 false, 137 false, 138 true, 139 true, 140 true, 141 true, 142 143 // extended blend coeffs 144 false, 145 false, 146 false, 147 false, 148 }; 149 return gCoeffReferencesBlendConst[coeff]; 150 GR_STATIC_ASSERT(kGrBlendCoeffCnt == SK_ARRAY_COUNT(gCoeffReferencesBlendConst)); 151 152 GR_STATIC_ASSERT(0 == kZero_GrBlendCoeff); 153 GR_STATIC_ASSERT(1 == kOne_GrBlendCoeff); 154 GR_STATIC_ASSERT(2 == kSC_GrBlendCoeff); 155 GR_STATIC_ASSERT(3 == kISC_GrBlendCoeff); 156 GR_STATIC_ASSERT(4 == kDC_GrBlendCoeff); 157 GR_STATIC_ASSERT(5 == kIDC_GrBlendCoeff); 158 GR_STATIC_ASSERT(6 == kSA_GrBlendCoeff); 159 GR_STATIC_ASSERT(7 == kISA_GrBlendCoeff); 160 GR_STATIC_ASSERT(8 == kDA_GrBlendCoeff); 161 GR_STATIC_ASSERT(9 == kIDA_GrBlendCoeff); 162 GR_STATIC_ASSERT(10 == kConstC_GrBlendCoeff); 163 GR_STATIC_ASSERT(11 == kIConstC_GrBlendCoeff); 164 GR_STATIC_ASSERT(12 == kConstA_GrBlendCoeff); 165 GR_STATIC_ASSERT(13 == kIConstA_GrBlendCoeff); 166 167 GR_STATIC_ASSERT(14 == kS2C_GrBlendCoeff); 168 GR_STATIC_ASSERT(15 == kIS2C_GrBlendCoeff); 169 GR_STATIC_ASSERT(16 == kS2A_GrBlendCoeff); 170 GR_STATIC_ASSERT(17 == kIS2A_GrBlendCoeff); 171 172 // assertion for gXfermodeCoeff2Blend have to be in GrGpu scope 173 GR_STATIC_ASSERT(kGrBlendCoeffCnt == SK_ARRAY_COUNT(gXfermodeCoeff2Blend)); 174 } 175 176 /////////////////////////////////////////////////////////////////////////////// 177 178 sk_sp<GrGpu> GrGLGpu::Make(GrBackendContext backendContext, const GrContextOptions& options, 179 GrContext* context) { 180 const auto* interface = reinterpret_cast<const GrGLInterface*>(backendContext); 181 return Make(sk_ref_sp(interface), options, context); 182 } 183 184 sk_sp<GrGpu> GrGLGpu::Make(sk_sp<const GrGLInterface> interface, const GrContextOptions& options, 185 GrContext* context) { 186 if (!interface) { 187 interface = GrGLMakeNativeInterface(); 188 // For clients that have written their own GrGLCreateNativeInterface and haven't yet updated 189 // to GrGLMakeNativeInterface. 190 if (!interface) { 191 interface = sk_ref_sp(GrGLCreateNativeInterface()); 192 } 193 if (!interface) { 194 return nullptr; 195 } 196 } 197 #ifdef USE_NSIGHT 198 const_cast<GrContextOptions&>(options).fSuppressPathRendering = true; 199 #endif 200 auto glContext = GrGLContext::Make(std::move(interface), options); 201 if (!glContext) { 202 return nullptr; 203 } 204 return sk_sp<GrGpu>(new GrGLGpu(std::move(glContext), context)); 205 } 206 207 GrGLGpu::GrGLGpu(std::unique_ptr<GrGLContext> ctx, GrContext* context) 208 : GrGpu(context) 209 , fGLContext(std::move(ctx)) 210 , fProgramCache(new ProgramCache(this)) 211 , fHWProgramID(0) 212 , fTempSrcFBOID(0) 213 , fTempDstFBOID(0) 214 , fStencilClearFBOID(0) 215 , fHWMaxUsedBufferTextureUnit(-1) 216 , fHWMinSampleShading(0.0) { 217 SkASSERT(fGLContext); 218 fCaps = sk_ref_sp(fGLContext->caps()); 219 220 fHWBoundTextureUniqueIDs.reset(this->caps()->shaderCaps()->maxCombinedSamplers()); 221 222 fHWBufferState[kVertex_GrBufferType].fGLTarget = GR_GL_ARRAY_BUFFER; 223 fHWBufferState[kIndex_GrBufferType].fGLTarget = GR_GL_ELEMENT_ARRAY_BUFFER; 224 fHWBufferState[kTexel_GrBufferType].fGLTarget = GR_GL_TEXTURE_BUFFER; 225 fHWBufferState[kDrawIndirect_GrBufferType].fGLTarget = GR_GL_DRAW_INDIRECT_BUFFER; 226 if (GrGLCaps::kChromium_TransferBufferType == this->glCaps().transferBufferType()) { 227 fHWBufferState[kXferCpuToGpu_GrBufferType].fGLTarget = 228 GR_GL_PIXEL_UNPACK_TRANSFER_BUFFER_CHROMIUM; 229 fHWBufferState[kXferGpuToCpu_GrBufferType].fGLTarget = 230 GR_GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM; 231 } else { 232 fHWBufferState[kXferCpuToGpu_GrBufferType].fGLTarget = GR_GL_PIXEL_UNPACK_BUFFER; 233 fHWBufferState[kXferGpuToCpu_GrBufferType].fGLTarget = GR_GL_PIXEL_PACK_BUFFER; 234 } 235 for (int i = 0; i < kGrBufferTypeCount; ++i) { 236 fHWBufferState[i].invalidate(); 237 } 238 GR_STATIC_ASSERT(6 == SK_ARRAY_COUNT(fHWBufferState)); 239 240 if (this->caps()->shaderCaps()->texelBufferSupport()) { 241 fHWBufferTextures.reset(this->caps()->shaderCaps()->maxCombinedSamplers()); 242 } 243 244 if (this->glCaps().shaderCaps()->pathRenderingSupport()) { 245 fPathRendering.reset(new GrGLPathRendering(this)); 246 } 247 248 GrGLClearErr(this->glInterface()); 249 } 250 251 GrGLGpu::~GrGLGpu() { 252 // Ensure any GrGpuResource objects get deleted first, since they may require a working GrGLGpu 253 // to release the resources held by the objects themselves. 254 fPathRendering.reset(); 255 fCopyProgramArrayBuffer.reset(); 256 fMipmapProgramArrayBuffer.reset(); 257 fStencilClipClearArrayBuffer.reset(); 258 259 if (fHWProgramID) { 260 // detach the current program so there is no confusion on OpenGL's part 261 // that we want it to be deleted 262 GL_CALL(UseProgram(0)); 263 } 264 265 if (fTempSrcFBOID) { 266 GL_CALL(DeleteFramebuffers(1, &fTempSrcFBOID)); 267 } 268 if (fTempDstFBOID) { 269 GL_CALL(DeleteFramebuffers(1, &fTempDstFBOID)); 270 } 271 if (fStencilClearFBOID) { 272 GL_CALL(DeleteFramebuffers(1, &fStencilClearFBOID)); 273 } 274 275 for (size_t i = 0; i < SK_ARRAY_COUNT(fCopyPrograms); ++i) { 276 if (0 != fCopyPrograms[i].fProgram) { 277 GL_CALL(DeleteProgram(fCopyPrograms[i].fProgram)); 278 } 279 } 280 281 for (size_t i = 0; i < SK_ARRAY_COUNT(fMipmapPrograms); ++i) { 282 if (0 != fMipmapPrograms[i].fProgram) { 283 GL_CALL(DeleteProgram(fMipmapPrograms[i].fProgram)); 284 } 285 } 286 287 if (fStencilClipClearProgram) { 288 GL_CALL(DeleteProgram(fStencilClipClearProgram)); 289 } 290 291 if (fClearColorProgram.fProgram) { 292 GL_CALL(DeleteProgram(fClearColorProgram.fProgram)); 293 } 294 295 delete fProgramCache; 296 } 297 298 void GrGLGpu::disconnect(DisconnectType type) { 299 INHERITED::disconnect(type); 300 if (DisconnectType::kCleanup == type) { 301 if (fHWProgramID) { 302 GL_CALL(UseProgram(0)); 303 } 304 if (fTempSrcFBOID) { 305 GL_CALL(DeleteFramebuffers(1, &fTempSrcFBOID)); 306 } 307 if (fTempDstFBOID) { 308 GL_CALL(DeleteFramebuffers(1, &fTempDstFBOID)); 309 } 310 if (fStencilClearFBOID) { 311 GL_CALL(DeleteFramebuffers(1, &fStencilClearFBOID)); 312 } 313 for (size_t i = 0; i < SK_ARRAY_COUNT(fCopyPrograms); ++i) { 314 if (fCopyPrograms[i].fProgram) { 315 GL_CALL(DeleteProgram(fCopyPrograms[i].fProgram)); 316 } 317 } 318 for (size_t i = 0; i < SK_ARRAY_COUNT(fMipmapPrograms); ++i) { 319 if (fMipmapPrograms[i].fProgram) { 320 GL_CALL(DeleteProgram(fMipmapPrograms[i].fProgram)); 321 } 322 } 323 if (fStencilClipClearProgram) { 324 GL_CALL(DeleteProgram(fStencilClipClearProgram)); 325 } 326 327 if (fClearColorProgram.fProgram) { 328 GL_CALL(DeleteProgram(fClearColorProgram.fProgram)); 329 } 330 } else { 331 if (fProgramCache) { 332 fProgramCache->abandon(); 333 } 334 } 335 336 delete fProgramCache; 337 fProgramCache = nullptr; 338 339 fHWProgramID = 0; 340 fTempSrcFBOID = 0; 341 fTempDstFBOID = 0; 342 fStencilClearFBOID = 0; 343 fCopyProgramArrayBuffer.reset(); 344 for (size_t i = 0; i < SK_ARRAY_COUNT(fCopyPrograms); ++i) { 345 fCopyPrograms[i].fProgram = 0; 346 } 347 fMipmapProgramArrayBuffer.reset(); 348 for (size_t i = 0; i < SK_ARRAY_COUNT(fMipmapPrograms); ++i) { 349 fMipmapPrograms[i].fProgram = 0; 350 } 351 fStencilClipClearProgram = 0; 352 fStencilClipClearArrayBuffer.reset(); 353 fClearColorProgram.fProgram = 0; 354 355 if (this->glCaps().shaderCaps()->pathRenderingSupport()) { 356 this->glPathRendering()->disconnect(type); 357 } 358 } 359 360 /////////////////////////////////////////////////////////////////////////////// 361 362 void GrGLGpu::onResetContext(uint32_t resetBits) { 363 if (resetBits & kMisc_GrGLBackendState) { 364 // we don't use the zb at all 365 GL_CALL(Disable(GR_GL_DEPTH_TEST)); 366 GL_CALL(DepthMask(GR_GL_FALSE)); 367 368 // We don't use face culling. 369 GL_CALL(Disable(GR_GL_CULL_FACE)); 370 // We do use separate stencil. Our algorithms don't care which face is front vs. back so 371 // just set this to the default for self-consistency. 372 GL_CALL(FrontFace(GR_GL_CCW)); 373 374 fHWBufferState[kTexel_GrBufferType].invalidate(); 375 fHWBufferState[kDrawIndirect_GrBufferType].invalidate(); 376 fHWBufferState[kXferCpuToGpu_GrBufferType].invalidate(); 377 fHWBufferState[kXferGpuToCpu_GrBufferType].invalidate(); 378 379 if (kGL_GrGLStandard == this->glStandard()) { 380 #ifndef USE_NSIGHT 381 // Desktop-only state that we never change 382 if (!this->glCaps().isCoreProfile()) { 383 GL_CALL(Disable(GR_GL_POINT_SMOOTH)); 384 GL_CALL(Disable(GR_GL_LINE_SMOOTH)); 385 GL_CALL(Disable(GR_GL_POLYGON_SMOOTH)); 386 GL_CALL(Disable(GR_GL_POLYGON_STIPPLE)); 387 GL_CALL(Disable(GR_GL_COLOR_LOGIC_OP)); 388 GL_CALL(Disable(GR_GL_INDEX_LOGIC_OP)); 389 } 390 // The windows NVIDIA driver has GL_ARB_imaging in the extension string when using a 391 // core profile. This seems like a bug since the core spec removes any mention of 392 // GL_ARB_imaging. 393 if (this->glCaps().imagingSupport() && !this->glCaps().isCoreProfile()) { 394 GL_CALL(Disable(GR_GL_COLOR_TABLE)); 395 } 396 GL_CALL(Disable(GR_GL_POLYGON_OFFSET_FILL)); 397 398 if (this->caps()->wireframeMode()) { 399 GL_CALL(PolygonMode(GR_GL_FRONT_AND_BACK, GR_GL_LINE)); 400 } else { 401 GL_CALL(PolygonMode(GR_GL_FRONT_AND_BACK, GR_GL_FILL)); 402 } 403 #endif 404 // Since ES doesn't support glPointSize at all we always use the VS to 405 // set the point size 406 GL_CALL(Enable(GR_GL_VERTEX_PROGRAM_POINT_SIZE)); 407 408 } 409 410 if (kGLES_GrGLStandard == this->glStandard() && 411 this->hasExtension("GL_ARM_shader_framebuffer_fetch")) { 412 // The arm extension requires specifically enabling MSAA fetching per sample. 413 // On some devices this may have a perf hit. Also multiple render targets are disabled 414 GL_CALL(Enable(GR_GL_FETCH_PER_SAMPLE_ARM)); 415 } 416 fHWWriteToColor = kUnknown_TriState; 417 // we only ever use lines in hairline mode 418 GL_CALL(LineWidth(1)); 419 GL_CALL(Disable(GR_GL_DITHER)); 420 } 421 422 if (resetBits & kMSAAEnable_GrGLBackendState) { 423 fMSAAEnabled = kUnknown_TriState; 424 425 if (this->caps()->usesMixedSamples()) { 426 if (0 != this->caps()->maxRasterSamples()) { 427 fHWRasterMultisampleEnabled = kUnknown_TriState; 428 fHWNumRasterSamples = 0; 429 } 430 431 // The skia blend modes all use premultiplied alpha and therefore expect RGBA coverage 432 // modulation. This state has no effect when not rendering to a mixed sampled target. 433 GL_CALL(CoverageModulation(GR_GL_RGBA)); 434 } 435 } 436 437 fHWActiveTextureUnitIdx = -1; // invalid 438 fLastPrimitiveType = static_cast<GrPrimitiveType>(-1); 439 440 if (resetBits & kTextureBinding_GrGLBackendState) { 441 for (int s = 0; s < fHWBoundTextureUniqueIDs.count(); ++s) { 442 fHWBoundTextureUniqueIDs[s].makeInvalid(); 443 } 444 for (int b = 0; b < fHWBufferTextures.count(); ++b) { 445 SkASSERT(this->caps()->shaderCaps()->texelBufferSupport()); 446 fHWBufferTextures[b].fKnownBound = false; 447 } 448 } 449 450 if (resetBits & kBlend_GrGLBackendState) { 451 fHWBlendState.invalidate(); 452 } 453 454 if (resetBits & kView_GrGLBackendState) { 455 fHWScissorSettings.invalidate(); 456 fHWWindowRectsState.invalidate(); 457 fHWViewport.invalidate(); 458 } 459 460 if (resetBits & kStencil_GrGLBackendState) { 461 fHWStencilSettings.invalidate(); 462 fHWStencilTestEnabled = kUnknown_TriState; 463 } 464 465 // Vertex 466 if (resetBits & kVertex_GrGLBackendState) { 467 fHWVertexArrayState.invalidate(); 468 fHWBufferState[kVertex_GrBufferType].invalidate(); 469 fHWBufferState[kIndex_GrBufferType].invalidate(); 470 } 471 472 if (resetBits & kRenderTarget_GrGLBackendState) { 473 fHWBoundRenderTargetUniqueID.makeInvalid(); 474 fHWSRGBFramebuffer = kUnknown_TriState; 475 } 476 477 if (resetBits & kPathRendering_GrGLBackendState) { 478 if (this->caps()->shaderCaps()->pathRenderingSupport()) { 479 this->glPathRendering()->resetContext(); 480 } 481 } 482 483 // we assume these values 484 if (resetBits & kPixelStore_GrGLBackendState) { 485 if (this->glCaps().unpackRowLengthSupport()) { 486 GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0)); 487 } 488 if (this->glCaps().packRowLengthSupport()) { 489 GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 0)); 490 } 491 if (this->glCaps().unpackFlipYSupport()) { 492 GL_CALL(PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_FALSE)); 493 } 494 if (this->glCaps().packFlipYSupport()) { 495 GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, GR_GL_FALSE)); 496 } 497 } 498 499 if (resetBits & kProgram_GrGLBackendState) { 500 fHWProgramID = 0; 501 } 502 } 503 504 static bool check_backend_texture(const GrBackendTexture& backendTex, const GrGLCaps& caps, 505 GrGLTexture::IDDesc* idDesc) { 506 const GrGLTextureInfo* info = backendTex.getGLTextureInfo(); 507 if (!info || !info->fID) { 508 return false; 509 } 510 511 idDesc->fInfo = *info; 512 513 if (GR_GL_TEXTURE_EXTERNAL == idDesc->fInfo.fTarget) { 514 if (!caps.shaderCaps()->externalTextureSupport()) { 515 return false; 516 } 517 } else if (GR_GL_TEXTURE_RECTANGLE == idDesc->fInfo.fTarget) { 518 if (!caps.rectangleTextureSupport()) { 519 return false; 520 } 521 } else if (GR_GL_TEXTURE_2D != idDesc->fInfo.fTarget) { 522 return false; 523 } 524 return true; 525 } 526 527 sk_sp<GrTexture> GrGLGpu::onWrapBackendTexture(const GrBackendTexture& backendTex, 528 GrWrapOwnership ownership) { 529 GrGLTexture::IDDesc idDesc; 530 if (!check_backend_texture(backendTex, this->glCaps(), &idDesc)) { 531 return nullptr; 532 } 533 if (!idDesc.fInfo.fFormat) { 534 idDesc.fInfo.fFormat = this->glCaps().configSizedInternalFormat(backendTex.config()); 535 } 536 if (kBorrow_GrWrapOwnership == ownership) { 537 idDesc.fOwnership = GrBackendObjectOwnership::kBorrowed; 538 } else { 539 idDesc.fOwnership = GrBackendObjectOwnership::kOwned; 540 } 541 542 GrSurfaceDesc surfDesc; 543 surfDesc.fFlags = kNone_GrSurfaceFlags; 544 surfDesc.fOrigin = kTopLeft_GrSurfaceOrigin; // This isn't used in the following 545 surfDesc.fWidth = backendTex.width(); 546 surfDesc.fHeight = backendTex.height(); 547 surfDesc.fConfig = backendTex.config(); 548 surfDesc.fSampleCnt = 1; 549 550 GrMipMapsStatus mipMapsStatus = backendTex.hasMipMaps() ? GrMipMapsStatus::kValid 551 : GrMipMapsStatus::kNotAllocated; 552 553 return GrGLTexture::MakeWrapped(this, surfDesc, mipMapsStatus, idDesc); 554 } 555 556 sk_sp<GrTexture> GrGLGpu::onWrapRenderableBackendTexture(const GrBackendTexture& backendTex, 557 int sampleCnt, 558 GrWrapOwnership ownership) { 559 GrGLTexture::IDDesc idDesc; 560 if (!check_backend_texture(backendTex, this->glCaps(), &idDesc)) { 561 return nullptr; 562 } 563 if (!idDesc.fInfo.fFormat) { 564 idDesc.fInfo.fFormat = this->glCaps().configSizedInternalFormat(backendTex.config()); 565 } 566 567 // We don't support rendering to a EXTERNAL texture. 568 if (GR_GL_TEXTURE_EXTERNAL == idDesc.fInfo.fTarget) { 569 return nullptr; 570 } 571 572 if (kBorrow_GrWrapOwnership == ownership) { 573 idDesc.fOwnership = GrBackendObjectOwnership::kBorrowed; 574 } else { 575 idDesc.fOwnership = GrBackendObjectOwnership::kOwned; 576 } 577 578 GrSurfaceDesc surfDesc; 579 surfDesc.fFlags = kRenderTarget_GrSurfaceFlag; 580 surfDesc.fOrigin = kBottomLeft_GrSurfaceOrigin; // This isn't actually used in the following 581 surfDesc.fWidth = backendTex.width(); 582 surfDesc.fHeight = backendTex.height(); 583 surfDesc.fConfig = backendTex.config(); 584 surfDesc.fSampleCnt = this->caps()->getSampleCount(sampleCnt, backendTex.config()); 585 if (surfDesc.fSampleCnt < 1) { 586 return nullptr; 587 } 588 589 GrGLRenderTarget::IDDesc rtIDDesc; 590 if (!this->createRenderTargetObjects(surfDesc, idDesc.fInfo, &rtIDDesc)) { 591 return nullptr; 592 } 593 594 GrMipMapsStatus mipMapsStatus = backendTex.hasMipMaps() ? GrMipMapsStatus::kDirty 595 : GrMipMapsStatus::kNotAllocated; 596 597 sk_sp<GrGLTextureRenderTarget> texRT( 598 GrGLTextureRenderTarget::MakeWrapped(this, surfDesc, idDesc, rtIDDesc, mipMapsStatus)); 599 texRT->baseLevelWasBoundToFBO(); 600 return std::move(texRT); 601 } 602 603 sk_sp<GrRenderTarget> GrGLGpu::onWrapBackendRenderTarget(const GrBackendRenderTarget& backendRT) { 604 const GrGLFramebufferInfo* info = backendRT.getGLFramebufferInfo(); 605 if (!info) { 606 return nullptr; 607 } 608 609 GrGLRenderTarget::IDDesc idDesc; 610 idDesc.fRTFBOID = info->fFBOID; 611 idDesc.fMSColorRenderbufferID = 0; 612 idDesc.fTexFBOID = GrGLRenderTarget::kUnresolvableFBOID; 613 idDesc.fRTFBOOwnership = GrBackendObjectOwnership::kBorrowed; 614 idDesc.fIsMixedSampled = false; 615 616 GrSurfaceDesc desc; 617 desc.fFlags = kRenderTarget_GrSurfaceFlag; 618 desc.fOrigin = kBottomLeft_GrSurfaceOrigin; // This isn't actually used in the following 619 desc.fWidth = backendRT.width(); 620 desc.fHeight = backendRT.height(); 621 desc.fConfig = backendRT.config(); 622 desc.fSampleCnt = this->caps()->getSampleCount(backendRT.sampleCnt(), backendRT.config()); 623 624 return GrGLRenderTarget::MakeWrapped(this, desc, idDesc, backendRT.stencilBits()); 625 } 626 627 sk_sp<GrRenderTarget> GrGLGpu::onWrapBackendTextureAsRenderTarget(const GrBackendTexture& tex, 628 int sampleCnt) { 629 const GrGLTextureInfo* info = tex.getGLTextureInfo(); 630 if (!info || !info->fID) { 631 return nullptr; 632 } 633 634 GrGLTextureInfo texInfo; 635 texInfo = *info; 636 637 if (GR_GL_TEXTURE_RECTANGLE != texInfo.fTarget && 638 GR_GL_TEXTURE_2D != texInfo.fTarget) { 639 // Only texture rectangle and texture 2d are supported. We do not check whether texture 640 // rectangle is supported by Skia - if the caller provided us with a texture rectangle, 641 // we assume the necessary support exists. 642 return nullptr; 643 } 644 645 GrSurfaceDesc surfDesc; 646 surfDesc.fFlags = kRenderTarget_GrSurfaceFlag; 647 surfDesc.fOrigin = kBottomLeft_GrSurfaceOrigin; // This isn't actually used in the following 648 surfDesc.fWidth = tex.width(); 649 surfDesc.fHeight = tex.height(); 650 surfDesc.fConfig = tex.config(); 651 surfDesc.fSampleCnt = this->caps()->getSampleCount(sampleCnt, tex.config()); 652 653 GrGLRenderTarget::IDDesc rtIDDesc; 654 if (!this->createRenderTargetObjects(surfDesc, texInfo, &rtIDDesc)) { 655 return nullptr; 656 } 657 return GrGLRenderTarget::MakeWrapped(this, surfDesc, rtIDDesc, 0); 658 } 659 660 //////////////////////////////////////////////////////////////////////////////// 661 662 bool GrGLGpu::onGetWritePixelsInfo(GrSurface* dstSurface, GrSurfaceOrigin dstOrigin, 663 int width, int height, 664 GrPixelConfig srcConfig, 665 DrawPreference* drawPreference, 666 WritePixelTempDrawInfo* tempDrawInfo) { 667 if (SkToBool(dstSurface->asRenderTarget())) { 668 if (this->glCaps().useDrawInsteadOfAllRenderTargetWrites()) { 669 ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference); 670 } 671 } 672 673 GrGLTexture* texture = static_cast<GrGLTexture*>(dstSurface->asTexture()); 674 675 if (texture) { 676 if (GR_GL_TEXTURE_EXTERNAL == texture->target()) { 677 // We don't currently support writing pixels to EXTERNAL textures. 678 return false; 679 } 680 if (GrPixelConfigIsUnorm(texture->config()) && texture->hasBaseLevelBeenBoundToFBO() && 681 this->glCaps().disallowTexSubImageForUnormConfigTexturesEverBoundToFBO() && 682 (width < dstSurface->width() || height < dstSurface->height())) { 683 ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference); 684 } 685 } else { 686 // This subclass only allows writes to textures. If the dst is not a texture we have to draw 687 // into it. We could use glDrawPixels on GLs that have it, but we don't today. 688 ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference); 689 } 690 691 // If the dst is MSAA, we have to draw, or we'll just be writing to the resolve target. 692 if (dstSurface->asRenderTarget() && dstSurface->asRenderTarget()->numColorSamples() > 1) { 693 ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference); 694 } 695 696 if (GrPixelConfigIsSRGB(dstSurface->config()) != GrPixelConfigIsSRGB(srcConfig)) { 697 ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference); 698 } 699 700 // Start off assuming no swizzling 701 tempDrawInfo->fSwizzle = GrSwizzle::RGBA(); 702 tempDrawInfo->fWriteConfig = srcConfig; 703 704 // These settings we will always want if a temp draw is performed. Initially set the config 705 // to srcConfig, though that may be modified if we decide to do a R/G swap. 706 tempDrawInfo->fTempSurfaceDesc.fFlags = kNone_GrSurfaceFlags; 707 tempDrawInfo->fTempSurfaceDesc.fConfig = srcConfig; 708 tempDrawInfo->fTempSurfaceDesc.fWidth = width; 709 tempDrawInfo->fTempSurfaceDesc.fHeight = height; 710 tempDrawInfo->fTempSurfaceDesc.fSampleCnt = 1; 711 tempDrawInfo->fTempSurfaceDesc.fOrigin = kTopLeft_GrSurfaceOrigin; // no CPU y-flip for TL. 712 713 bool configsAreRBSwaps = GrPixelConfigSwapRAndB(srcConfig) == dstSurface->config(); 714 715 if (configsAreRBSwaps) { 716 if (!this->caps()->isConfigTexturable(srcConfig)) { 717 ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference); 718 tempDrawInfo->fTempSurfaceDesc.fConfig = dstSurface->config(); 719 tempDrawInfo->fSwizzle = GrSwizzle::BGRA(); 720 tempDrawInfo->fWriteConfig = dstSurface->config(); 721 } else if (this->glCaps().rgba8888PixelsOpsAreSlow() && 722 kRGBA_8888_GrPixelConfig == srcConfig) { 723 ElevateDrawPreference(drawPreference, kGpuPrefersDraw_DrawPreference); 724 tempDrawInfo->fTempSurfaceDesc.fConfig = dstSurface->config(); 725 tempDrawInfo->fSwizzle = GrSwizzle::BGRA(); 726 tempDrawInfo->fWriteConfig = dstSurface->config(); 727 } else if (kGLES_GrGLStandard == this->glStandard() && 728 this->glCaps().bgraIsInternalFormat()) { 729 // The internal format and external formats must match texture uploads so we can't 730 // swizzle while uploading when BGRA is a distinct internal format. 731 ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference); 732 tempDrawInfo->fTempSurfaceDesc.fConfig = dstSurface->config(); 733 tempDrawInfo->fSwizzle = GrSwizzle::BGRA(); 734 tempDrawInfo->fWriteConfig = dstSurface->config(); 735 } 736 } 737 738 if (!this->glCaps().unpackFlipYSupport() && kBottomLeft_GrSurfaceOrigin == dstOrigin) { 739 ElevateDrawPreference(drawPreference, kGpuPrefersDraw_DrawPreference); 740 } 741 742 return true; 743 } 744 745 static bool check_write_and_transfer_input(GrGLTexture* glTex, GrSurface* surface, 746 GrPixelConfig config) { 747 if (!glTex) { 748 return false; 749 } 750 751 // OpenGL doesn't do sRGB <-> linear conversions when reading and writing pixels. 752 if (GrPixelConfigIsSRGB(surface->config()) != GrPixelConfigIsSRGB(config)) { 753 return false; 754 } 755 756 // Write or transfer of pixels is not implemented for TEXTURE_EXTERNAL textures 757 if (GR_GL_TEXTURE_EXTERNAL == glTex->target()) { 758 return false; 759 } 760 761 return true; 762 } 763 764 bool GrGLGpu::onWritePixels(GrSurface* surface, GrSurfaceOrigin origin, 765 int left, int top, int width, int height, 766 GrPixelConfig config, 767 const GrMipLevel texels[], 768 int mipLevelCount) { 769 GrGLTexture* glTex = static_cast<GrGLTexture*>(surface->asTexture()); 770 771 if (!check_write_and_transfer_input(glTex, surface, config)) { 772 return false; 773 } 774 775 this->setScratchTextureUnit(); 776 GL_CALL(BindTexture(glTex->target(), glTex->textureID())); 777 778 return this->uploadTexData(glTex->config(), glTex->width(), glTex->height(), 779 origin, glTex->target(), kWrite_UploadType, 780 left, top, width, height, config, texels, mipLevelCount); 781 } 782 783 // For GL_[UN]PACK_ALIGNMENT. 784 static inline GrGLint config_alignment(GrPixelConfig config) { 785 switch (config) { 786 case kAlpha_8_GrPixelConfig: 787 case kAlpha_8_as_Alpha_GrPixelConfig: 788 case kAlpha_8_as_Red_GrPixelConfig: 789 case kGray_8_GrPixelConfig: 790 case kGray_8_as_Lum_GrPixelConfig: 791 case kGray_8_as_Red_GrPixelConfig: 792 return 1; 793 case kRGB_565_GrPixelConfig: 794 case kRGBA_4444_GrPixelConfig: 795 case kAlpha_half_GrPixelConfig: 796 case kAlpha_half_as_Red_GrPixelConfig: 797 case kRGBA_half_GrPixelConfig: 798 return 2; 799 case kRGBA_8888_GrPixelConfig: 800 case kBGRA_8888_GrPixelConfig: 801 case kSRGBA_8888_GrPixelConfig: 802 case kSBGRA_8888_GrPixelConfig: 803 case kRGBA_8888_sint_GrPixelConfig: 804 case kRGBA_float_GrPixelConfig: 805 case kRG_float_GrPixelConfig: 806 return 4; 807 case kUnknown_GrPixelConfig: 808 return 0; 809 } 810 SK_ABORT("Invalid pixel config"); 811 return 0; 812 } 813 814 bool GrGLGpu::onTransferPixels(GrTexture* texture, 815 int left, int top, int width, int height, 816 GrPixelConfig config, GrBuffer* transferBuffer, 817 size_t offset, size_t rowBytes) { 818 GrGLTexture* glTex = static_cast<GrGLTexture*>(texture); 819 GrPixelConfig texConfig = glTex->config(); 820 SkASSERT(this->caps()->isConfigTexturable(texConfig)); 821 822 if (!check_write_and_transfer_input(glTex, texture, config)) { 823 return false; 824 } 825 826 if (width <= 0 || width > SK_MaxS32 || height <= 0 || height > SK_MaxS32) { 827 return false; 828 } 829 830 this->setScratchTextureUnit(); 831 GL_CALL(BindTexture(glTex->target(), glTex->textureID())); 832 833 SkASSERT(!transferBuffer->isMapped()); 834 SkASSERT(!transferBuffer->isCPUBacked()); 835 const GrGLBuffer* glBuffer = static_cast<const GrGLBuffer*>(transferBuffer); 836 this->bindBuffer(kXferCpuToGpu_GrBufferType, glBuffer); 837 838 SkDEBUGCODE( 839 SkIRect subRect = SkIRect::MakeXYWH(left, top, width, height); 840 SkIRect bounds = SkIRect::MakeWH(texture->width(), texture->height()); 841 SkASSERT(bounds.contains(subRect)); 842 ) 843 844 size_t bpp = GrBytesPerPixel(config); 845 const size_t trimRowBytes = width * bpp; 846 if (!rowBytes) { 847 rowBytes = trimRowBytes; 848 } 849 const void* pixels = (void*)offset; 850 if (width < 0 || height < 0) { 851 return false; 852 } 853 854 bool restoreGLRowLength = false; 855 if (trimRowBytes != rowBytes) { 856 // we should have checked for this support already 857 SkASSERT(this->glCaps().unpackRowLengthSupport()); 858 GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, rowBytes / bpp)); 859 restoreGLRowLength = true; 860 } 861 862 // Internal format comes from the texture desc. 863 GrGLenum internalFormat; 864 // External format and type come from the upload data. 865 GrGLenum externalFormat; 866 GrGLenum externalType; 867 if (!this->glCaps().getTexImageFormats(texConfig, config, &internalFormat, 868 &externalFormat, &externalType)) { 869 return false; 870 } 871 872 GL_CALL(PixelStorei(GR_GL_UNPACK_ALIGNMENT, config_alignment(texConfig))); 873 GL_CALL(TexSubImage2D(glTex->target(), 874 0, 875 left, top, 876 width, 877 height, 878 externalFormat, externalType, 879 pixels)); 880 881 if (restoreGLRowLength) { 882 GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0)); 883 } 884 885 return true; 886 } 887 888 /** 889 * Creates storage space for the texture and fills it with texels. 890 * 891 * @param config Pixel config of the texture. 892 * @param interface The GL interface in use. 893 * @param caps The capabilities of the GL device. 894 * @param internalFormat The data format used for the internal storage of the texture. May be sized. 895 * @param internalFormatForTexStorage The data format used for the TexStorage API. Must be sized. 896 * @param externalFormat The data format used for the external storage of the texture. 897 * @param externalType The type of the data used for the external storage of the texture. 898 * @param texels The texel data of the texture being created. 899 * @param baseWidth The width of the texture's base mipmap level 900 * @param baseHeight The height of the texture's base mipmap level 901 */ 902 static bool allocate_and_populate_texture(GrPixelConfig config, 903 const GrGLInterface& interface, 904 const GrGLCaps& caps, 905 GrGLenum target, 906 GrGLenum internalFormat, 907 GrGLenum internalFormatForTexStorage, 908 GrGLenum externalFormat, 909 GrGLenum externalType, 910 const GrMipLevel texels[], int mipLevelCount, 911 int baseWidth, int baseHeight) { 912 CLEAR_ERROR_BEFORE_ALLOC(&interface); 913 914 bool useTexStorage = caps.isConfigTexSupportEnabled(config); 915 // We can only use TexStorage if we know we will not later change the storage requirements. 916 // This means if we may later want to add mipmaps, we cannot use TexStorage. 917 // Right now, we cannot know if we will later add mipmaps or not. 918 // The only time we can use TexStorage is when we already have the 919 // mipmaps or are using a format incompatible with MIP maps. 920 useTexStorage &= mipLevelCount > 1 || GrPixelConfigIsSint(config); 921 922 if (useTexStorage) { 923 // We never resize or change formats of textures. 924 GL_ALLOC_CALL(&interface, 925 TexStorage2D(target, SkTMax(mipLevelCount, 1), internalFormatForTexStorage, 926 baseWidth, baseHeight)); 927 GrGLenum error = CHECK_ALLOC_ERROR(&interface); 928 if (error != GR_GL_NO_ERROR) { 929 return false; 930 } else { 931 for (int currentMipLevel = 0; currentMipLevel < mipLevelCount; currentMipLevel++) { 932 const void* currentMipData = texels[currentMipLevel].fPixels; 933 if (currentMipData == nullptr) { 934 continue; 935 } 936 int twoToTheMipLevel = 1 << currentMipLevel; 937 int currentWidth = SkTMax(1, baseWidth / twoToTheMipLevel); 938 int currentHeight = SkTMax(1, baseHeight / twoToTheMipLevel); 939 940 GR_GL_CALL(&interface, 941 TexSubImage2D(target, 942 currentMipLevel, 943 0, // left 944 0, // top 945 currentWidth, 946 currentHeight, 947 externalFormat, externalType, 948 currentMipData)); 949 } 950 return true; 951 } 952 } else { 953 if (!mipLevelCount) { 954 GL_ALLOC_CALL(&interface, 955 TexImage2D(target, 956 0, 957 internalFormat, 958 baseWidth, 959 baseHeight, 960 0, // border 961 externalFormat, externalType, 962 nullptr)); 963 GrGLenum error = CHECK_ALLOC_ERROR(&interface); 964 if (error != GR_GL_NO_ERROR) { 965 return false; 966 } 967 } else { 968 for (int currentMipLevel = 0; currentMipLevel < mipLevelCount; currentMipLevel++) { 969 int twoToTheMipLevel = 1 << currentMipLevel; 970 int currentWidth = SkTMax(1, baseWidth / twoToTheMipLevel); 971 int currentHeight = SkTMax(1, baseHeight / twoToTheMipLevel); 972 const void* currentMipData = texels[currentMipLevel].fPixels; 973 // Even if curremtMipData is nullptr, continue to call TexImage2D. 974 // This will allocate texture memory which we can later populate. 975 GL_ALLOC_CALL(&interface, 976 TexImage2D(target, 977 currentMipLevel, 978 internalFormat, 979 currentWidth, 980 currentHeight, 981 0, // border 982 externalFormat, externalType, 983 currentMipData)); 984 GrGLenum error = CHECK_ALLOC_ERROR(&interface); 985 if (error != GR_GL_NO_ERROR) { 986 return false; 987 } 988 } 989 } 990 } 991 return true; 992 } 993 994 /** 995 * After a texture is created, any state which was altered during its creation 996 * needs to be restored. 997 * 998 * @param interface The GL interface to use. 999 * @param caps The capabilities of the GL device. 1000 * @param restoreGLRowLength Should the row length unpacking be restored? 1001 * @param glFlipY Did GL flip the texture vertically? 1002 */ 1003 static void restore_pixelstore_state(const GrGLInterface& interface, const GrGLCaps& caps, 1004 bool restoreGLRowLength, bool glFlipY) { 1005 if (restoreGLRowLength) { 1006 SkASSERT(caps.unpackRowLengthSupport()); 1007 GR_GL_CALL(&interface, PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0)); 1008 } 1009 if (glFlipY) { 1010 GR_GL_CALL(&interface, PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_FALSE)); 1011 } 1012 } 1013 1014 void GrGLGpu::unbindCpuToGpuXferBuffer() { 1015 auto& xferBufferState = fHWBufferState[kXferCpuToGpu_GrBufferType]; 1016 if (!xferBufferState.fBoundBufferUniqueID.isInvalid()) { 1017 GL_CALL(BindBuffer(xferBufferState.fGLTarget, 0)); 1018 xferBufferState.invalidate(); 1019 } 1020 1021 } 1022 1023 bool GrGLGpu::uploadTexData(GrPixelConfig texConfig, int texWidth, int texHeight, 1024 GrSurfaceOrigin texOrigin, GrGLenum target, UploadType uploadType, 1025 int left, int top, int width, int height, GrPixelConfig dataConfig, 1026 const GrMipLevel texels[], int mipLevelCount, 1027 GrMipMapsStatus* mipMapsStatus) { 1028 SkASSERT(this->caps()->isConfigTexturable(texConfig)); 1029 SkDEBUGCODE( 1030 SkIRect subRect = SkIRect::MakeXYWH(left, top, width, height); 1031 SkIRect bounds = SkIRect::MakeWH(texWidth, texHeight); 1032 SkASSERT(bounds.contains(subRect)); 1033 ) 1034 SkASSERT(1 == mipLevelCount || 1035 (0 == left && 0 == top && width == texWidth && height == texHeight)); 1036 1037 this->unbindCpuToGpuXferBuffer(); 1038 1039 // texels is const. 1040 // But we may need to flip the texture vertically to prepare it. 1041 // Rather than flip in place and alter the incoming data, 1042 // we allocate a new buffer to flip into. 1043 // This means we need to make a non-const shallow copy of texels. 1044 SkAutoTMalloc<GrMipLevel> texelsShallowCopy; 1045 1046 if (mipLevelCount) { 1047 texelsShallowCopy.reset(mipLevelCount); 1048 memcpy(texelsShallowCopy.get(), texels, mipLevelCount*sizeof(GrMipLevel)); 1049 } 1050 1051 const GrGLInterface* interface = this->glInterface(); 1052 const GrGLCaps& caps = this->glCaps(); 1053 1054 size_t bpp = GrBytesPerPixel(dataConfig); 1055 1056 if (width == 0 || height == 0) { 1057 return false; 1058 } 1059 1060 // Internal format comes from the texture desc. 1061 GrGLenum internalFormat; 1062 // External format and type come from the upload data. 1063 GrGLenum externalFormat; 1064 GrGLenum externalType; 1065 if (!this->glCaps().getTexImageFormats(texConfig, dataConfig, &internalFormat, &externalFormat, 1066 &externalType)) { 1067 return false; 1068 } 1069 // TexStorage requires a sized format, and internalFormat may or may not be 1070 GrGLenum internalFormatForTexStorage = this->glCaps().configSizedInternalFormat(texConfig); 1071 1072 /* 1073 * Check whether to allocate a temporary buffer for flipping y or 1074 * because our srcData has extra bytes past each row. If so, we need 1075 * to trim those off here, since GL ES may not let us specify 1076 * GL_UNPACK_ROW_LENGTH. 1077 */ 1078 bool restoreGLRowLength = false; 1079 bool swFlipY = false; 1080 bool glFlipY = false; 1081 1082 if (kBottomLeft_GrSurfaceOrigin == texOrigin && mipLevelCount) { 1083 if (caps.unpackFlipYSupport()) { 1084 glFlipY = true; 1085 } else { 1086 swFlipY = true; 1087 } 1088 } 1089 1090 // in case we need a temporary, trimmed copy of the src pixels 1091 SkAutoSMalloc<128 * 128> tempStorage; 1092 1093 if (mipMapsStatus) { 1094 *mipMapsStatus = GrMipMapsStatus::kValid; 1095 } 1096 1097 const bool usesMips = mipLevelCount > 1; 1098 1099 // find the combined size of all the mip levels and the relative offset of 1100 // each into the collective buffer 1101 bool willNeedData = false; 1102 size_t combinedBufferSize = 0; 1103 SkTArray<size_t> individualMipOffsets(mipLevelCount); 1104 for (int currentMipLevel = 0; currentMipLevel < mipLevelCount; currentMipLevel++) { 1105 if (texelsShallowCopy[currentMipLevel].fPixels) { 1106 int twoToTheMipLevel = 1 << currentMipLevel; 1107 int currentWidth = SkTMax(1, width / twoToTheMipLevel); 1108 int currentHeight = SkTMax(1, height / twoToTheMipLevel); 1109 const size_t trimRowBytes = currentWidth * bpp; 1110 const size_t trimmedSize = trimRowBytes * currentHeight; 1111 1112 const size_t rowBytes = texelsShallowCopy[currentMipLevel].fRowBytes 1113 ? texelsShallowCopy[currentMipLevel].fRowBytes 1114 : trimRowBytes; 1115 1116 1117 if (((!caps.unpackRowLengthSupport() || usesMips) && trimRowBytes != rowBytes) || 1118 swFlipY) { 1119 willNeedData = true; 1120 } 1121 1122 individualMipOffsets.push_back(combinedBufferSize); 1123 combinedBufferSize += trimmedSize; 1124 } else { 1125 if (mipMapsStatus) { 1126 *mipMapsStatus = GrMipMapsStatus::kDirty; 1127 } 1128 individualMipOffsets.push_back(0); 1129 } 1130 } 1131 if (mipMapsStatus && mipLevelCount <= 1) { 1132 *mipMapsStatus = GrMipMapsStatus::kNotAllocated; 1133 } 1134 char* buffer = nullptr; 1135 if (willNeedData) { 1136 buffer = (char*)tempStorage.reset(combinedBufferSize); 1137 } 1138 1139 for (int currentMipLevel = 0; currentMipLevel < mipLevelCount; currentMipLevel++) { 1140 if (!texelsShallowCopy[currentMipLevel].fPixels) { 1141 continue; 1142 } 1143 int twoToTheMipLevel = 1 << currentMipLevel; 1144 int currentWidth = SkTMax(1, width / twoToTheMipLevel); 1145 int currentHeight = SkTMax(1, height / twoToTheMipLevel); 1146 const size_t trimRowBytes = currentWidth * bpp; 1147 1148 /* 1149 * check whether to allocate a temporary buffer for flipping y or 1150 * because our srcData has extra bytes past each row. If so, we need 1151 * to trim those off here, since GL ES may not let us specify 1152 * GL_UNPACK_ROW_LENGTH. 1153 */ 1154 restoreGLRowLength = false; 1155 1156 const size_t rowBytes = texelsShallowCopy[currentMipLevel].fRowBytes 1157 ? texelsShallowCopy[currentMipLevel].fRowBytes 1158 : trimRowBytes; 1159 1160 // TODO: This optimization should be enabled with or without mips. 1161 // For use with mips, we must set GR_GL_UNPACK_ROW_LENGTH once per 1162 // mip level, before calling glTexImage2D. 1163 if (caps.unpackRowLengthSupport() && !swFlipY && !usesMips) { 1164 // can't use this for flipping, only non-neg values allowed. :( 1165 if (rowBytes != trimRowBytes) { 1166 GrGLint rowLength = static_cast<GrGLint>(rowBytes / bpp); 1167 GR_GL_CALL(interface, PixelStorei(GR_GL_UNPACK_ROW_LENGTH, rowLength)); 1168 restoreGLRowLength = true; 1169 } 1170 } else if (trimRowBytes != rowBytes || swFlipY) { 1171 // copy data into our new storage, skipping the trailing bytes 1172 const char* src = (const char*)texelsShallowCopy[currentMipLevel].fPixels; 1173 if (swFlipY && currentHeight >= 1) { 1174 src += (currentHeight - 1) * rowBytes; 1175 } 1176 char* dst = buffer + individualMipOffsets[currentMipLevel]; 1177 for (int y = 0; y < currentHeight; y++) { 1178 memcpy(dst, src, trimRowBytes); 1179 if (swFlipY) { 1180 src -= rowBytes; 1181 } else { 1182 src += rowBytes; 1183 } 1184 dst += trimRowBytes; 1185 } 1186 // now point data to our copied version 1187 texelsShallowCopy[currentMipLevel].fPixels = buffer + 1188 individualMipOffsets[currentMipLevel]; 1189 texelsShallowCopy[currentMipLevel].fRowBytes = trimRowBytes; 1190 } 1191 } 1192 1193 if (mipLevelCount) { 1194 if (glFlipY) { 1195 GR_GL_CALL(interface, PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_TRUE)); 1196 } 1197 GR_GL_CALL(interface, PixelStorei(GR_GL_UNPACK_ALIGNMENT, config_alignment(texConfig))); 1198 } 1199 1200 bool succeeded = true; 1201 if (kNewTexture_UploadType == uploadType) { 1202 if (0 == left && 0 == top && texWidth == width && texHeight == height) { 1203 succeeded = allocate_and_populate_texture( 1204 texConfig, *interface, caps, target, internalFormat, 1205 internalFormatForTexStorage, externalFormat, externalType, 1206 texelsShallowCopy, mipLevelCount, width, height); 1207 } else { 1208 succeeded = false; 1209 } 1210 } else { 1211 if (swFlipY || glFlipY) { 1212 top = texHeight - (top + height); 1213 } 1214 for (int currentMipLevel = 0; currentMipLevel < mipLevelCount; currentMipLevel++) { 1215 if (!texelsShallowCopy[currentMipLevel].fPixels) { 1216 continue; 1217 } 1218 int twoToTheMipLevel = 1 << currentMipLevel; 1219 int currentWidth = SkTMax(1, width / twoToTheMipLevel); 1220 int currentHeight = SkTMax(1, height / twoToTheMipLevel); 1221 1222 GL_CALL(TexSubImage2D(target, 1223 currentMipLevel, 1224 left, top, 1225 currentWidth, 1226 currentHeight, 1227 externalFormat, externalType, 1228 texelsShallowCopy[currentMipLevel].fPixels)); 1229 } 1230 } 1231 1232 restore_pixelstore_state(*interface, caps, restoreGLRowLength, glFlipY); 1233 1234 return succeeded; 1235 } 1236 1237 static bool renderbuffer_storage_msaa(const GrGLContext& ctx, 1238 int sampleCount, 1239 GrGLenum format, 1240 int width, int height) { 1241 CLEAR_ERROR_BEFORE_ALLOC(ctx.interface()); 1242 SkASSERT(GrGLCaps::kNone_MSFBOType != ctx.caps()->msFBOType()); 1243 switch (ctx.caps()->msFBOType()) { 1244 case GrGLCaps::kStandard_MSFBOType: 1245 case GrGLCaps::kMixedSamples_MSFBOType: 1246 GL_ALLOC_CALL(ctx.interface(), 1247 RenderbufferStorageMultisample(GR_GL_RENDERBUFFER, 1248 sampleCount, 1249 format, 1250 width, height)); 1251 break; 1252 case GrGLCaps::kES_Apple_MSFBOType: 1253 GL_ALLOC_CALL(ctx.interface(), 1254 RenderbufferStorageMultisampleES2APPLE(GR_GL_RENDERBUFFER, 1255 sampleCount, 1256 format, 1257 width, height)); 1258 break; 1259 case GrGLCaps::kES_EXT_MsToTexture_MSFBOType: 1260 case GrGLCaps::kES_IMG_MsToTexture_MSFBOType: 1261 GL_ALLOC_CALL(ctx.interface(), 1262 RenderbufferStorageMultisampleES2EXT(GR_GL_RENDERBUFFER, 1263 sampleCount, 1264 format, 1265 width, height)); 1266 break; 1267 case GrGLCaps::kNone_MSFBOType: 1268 SK_ABORT("Shouldn't be here if we don't support multisampled renderbuffers."); 1269 break; 1270 } 1271 return (GR_GL_NO_ERROR == CHECK_ALLOC_ERROR(ctx.interface())); 1272 } 1273 1274 bool GrGLGpu::createRenderTargetObjects(const GrSurfaceDesc& desc, 1275 const GrGLTextureInfo& texInfo, 1276 GrGLRenderTarget::IDDesc* idDesc) { 1277 idDesc->fMSColorRenderbufferID = 0; 1278 idDesc->fRTFBOID = 0; 1279 idDesc->fRTFBOOwnership = GrBackendObjectOwnership::kOwned; 1280 idDesc->fTexFBOID = 0; 1281 SkASSERT((GrGLCaps::kMixedSamples_MSFBOType == this->glCaps().msFBOType()) == 1282 this->caps()->usesMixedSamples()); 1283 idDesc->fIsMixedSampled = desc.fSampleCnt > 1 && this->caps()->usesMixedSamples(); 1284 1285 GrGLenum status; 1286 1287 GrGLenum colorRenderbufferFormat = 0; // suppress warning 1288 1289 if (desc.fSampleCnt > 1 && GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType()) { 1290 goto FAILED; 1291 } 1292 1293 GL_CALL(GenFramebuffers(1, &idDesc->fTexFBOID)); 1294 if (!idDesc->fTexFBOID) { 1295 goto FAILED; 1296 } 1297 1298 // If we are using multisampling we will create two FBOS. We render to one and then resolve to 1299 // the texture bound to the other. The exception is the IMG multisample extension. With this 1300 // extension the texture is multisampled when rendered to and then auto-resolves it when it is 1301 // rendered from. 1302 if (desc.fSampleCnt > 1 && this->glCaps().usesMSAARenderBuffers()) { 1303 GL_CALL(GenFramebuffers(1, &idDesc->fRTFBOID)); 1304 GL_CALL(GenRenderbuffers(1, &idDesc->fMSColorRenderbufferID)); 1305 if (!idDesc->fRTFBOID || 1306 !idDesc->fMSColorRenderbufferID) { 1307 goto FAILED; 1308 } 1309 if (!this->glCaps().getRenderbufferFormat(desc.fConfig, &colorRenderbufferFormat)) { 1310 return false; 1311 } 1312 } else { 1313 idDesc->fRTFBOID = idDesc->fTexFBOID; 1314 } 1315 1316 // below here we may bind the FBO 1317 fHWBoundRenderTargetUniqueID.makeInvalid(); 1318 if (idDesc->fRTFBOID != idDesc->fTexFBOID) { 1319 SkASSERT(desc.fSampleCnt > 1); 1320 GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, idDesc->fMSColorRenderbufferID)); 1321 if (!renderbuffer_storage_msaa(*fGLContext, 1322 desc.fSampleCnt, 1323 colorRenderbufferFormat, 1324 desc.fWidth, desc.fHeight)) { 1325 goto FAILED; 1326 } 1327 fStats.incRenderTargetBinds(); 1328 GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, idDesc->fRTFBOID)); 1329 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1330 GR_GL_COLOR_ATTACHMENT0, 1331 GR_GL_RENDERBUFFER, 1332 idDesc->fMSColorRenderbufferID)); 1333 if (!this->glCaps().isConfigVerifiedColorAttachment(desc.fConfig)) { 1334 GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); 1335 if (status != GR_GL_FRAMEBUFFER_COMPLETE) { 1336 goto FAILED; 1337 } 1338 fGLContext->caps()->markConfigAsValidColorAttachment(desc.fConfig); 1339 } 1340 } 1341 fStats.incRenderTargetBinds(); 1342 GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, idDesc->fTexFBOID)); 1343 1344 if (this->glCaps().usesImplicitMSAAResolve() && desc.fSampleCnt > 1) { 1345 GL_CALL(FramebufferTexture2DMultisample(GR_GL_FRAMEBUFFER, 1346 GR_GL_COLOR_ATTACHMENT0, 1347 texInfo.fTarget, 1348 texInfo.fID, 0, desc.fSampleCnt)); 1349 } else { 1350 GL_CALL(FramebufferTexture2D(GR_GL_FRAMEBUFFER, 1351 GR_GL_COLOR_ATTACHMENT0, 1352 texInfo.fTarget, 1353 texInfo.fID, 0)); 1354 } 1355 if (!this->glCaps().isConfigVerifiedColorAttachment(desc.fConfig)) { 1356 GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); 1357 if (status != GR_GL_FRAMEBUFFER_COMPLETE) { 1358 goto FAILED; 1359 } 1360 fGLContext->caps()->markConfigAsValidColorAttachment(desc.fConfig); 1361 } 1362 1363 return true; 1364 1365 FAILED: 1366 if (idDesc->fMSColorRenderbufferID) { 1367 GL_CALL(DeleteRenderbuffers(1, &idDesc->fMSColorRenderbufferID)); 1368 } 1369 if (idDesc->fRTFBOID != idDesc->fTexFBOID) { 1370 GL_CALL(DeleteFramebuffers(1, &idDesc->fRTFBOID)); 1371 } 1372 if (idDesc->fTexFBOID) { 1373 GL_CALL(DeleteFramebuffers(1, &idDesc->fTexFBOID)); 1374 } 1375 return false; 1376 } 1377 1378 // good to set a break-point here to know when createTexture fails 1379 static sk_sp<GrTexture> return_null_texture() { 1380 // SkDEBUGFAIL("null texture"); 1381 return nullptr; 1382 } 1383 1384 #if 0 && defined(SK_DEBUG) 1385 static size_t as_size_t(int x) { 1386 return x; 1387 } 1388 #endif 1389 1390 static void set_initial_texture_params(const GrGLInterface* interface, 1391 const GrGLTextureInfo& info, 1392 GrGLTexture::TexParams* initialTexParams) { 1393 // Some drivers like to know filter/wrap before seeing glTexImage2D. Some 1394 // drivers have a bug where an FBO won't be complete if it includes a 1395 // texture that is not mipmap complete (considering the filter in use). 1396 // we only set a subset here so invalidate first 1397 initialTexParams->invalidate(); 1398 initialTexParams->fMinFilter = GR_GL_NEAREST; 1399 initialTexParams->fMagFilter = GR_GL_NEAREST; 1400 initialTexParams->fWrapS = GR_GL_CLAMP_TO_EDGE; 1401 initialTexParams->fWrapT = GR_GL_CLAMP_TO_EDGE; 1402 GR_GL_CALL(interface, TexParameteri(info.fTarget, 1403 GR_GL_TEXTURE_MAG_FILTER, 1404 initialTexParams->fMagFilter)); 1405 GR_GL_CALL(interface, TexParameteri(info.fTarget, 1406 GR_GL_TEXTURE_MIN_FILTER, 1407 initialTexParams->fMinFilter)); 1408 GR_GL_CALL(interface, TexParameteri(info.fTarget, 1409 GR_GL_TEXTURE_WRAP_S, 1410 initialTexParams->fWrapS)); 1411 GR_GL_CALL(interface, TexParameteri(info.fTarget, 1412 GR_GL_TEXTURE_WRAP_T, 1413 initialTexParams->fWrapT)); 1414 } 1415 1416 sk_sp<GrTexture> GrGLGpu::onCreateTexture(const GrSurfaceDesc& desc, 1417 SkBudgeted budgeted, 1418 const GrMipLevel texels[], 1419 int mipLevelCount) { 1420 // We fail if the MSAA was requested and is not available. 1421 if (GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType() && desc.fSampleCnt > 1) { 1422 //SkDebugf("MSAA RT requested but not supported on this platform."); 1423 return return_null_texture(); 1424 } 1425 1426 bool performClear = (desc.fFlags & kPerformInitialClear_GrSurfaceFlag); 1427 1428 GrMipLevel zeroLevel; 1429 std::unique_ptr<uint8_t[]> zeros; 1430 // TODO: remove the GrPixelConfigIsSint test. This is here because we have yet to add support 1431 // for glClearBuffer* which must be used instead of glClearColor/glClear for integer FBO 1432 // attachments. 1433 if (performClear && !this->glCaps().clearTextureSupport() && 1434 (!this->glCaps().canConfigBeFBOColorAttachment(desc.fConfig) || 1435 GrPixelConfigIsSint(desc.fConfig))) { 1436 size_t rowSize = GrBytesPerPixel(desc.fConfig) * desc.fWidth; 1437 size_t size = rowSize * desc.fHeight; 1438 zeros.reset(new uint8_t[size]); 1439 memset(zeros.get(), 0, size); 1440 zeroLevel.fPixels = zeros.get(); 1441 zeroLevel.fRowBytes = 0; 1442 texels = &zeroLevel; 1443 mipLevelCount = 1; 1444 performClear = false; 1445 } 1446 1447 bool isRenderTarget = SkToBool(desc.fFlags & kRenderTarget_GrSurfaceFlag); 1448 1449 GrGLTexture::IDDesc idDesc; 1450 idDesc.fOwnership = GrBackendObjectOwnership::kOwned; 1451 GrMipMapsStatus mipMapsStatus; 1452 GrGLTexture::TexParams initialTexParams; 1453 if (!this->createTextureImpl(desc, &idDesc.fInfo, isRenderTarget, &initialTexParams, 1454 texels, mipLevelCount, &mipMapsStatus)) { 1455 return return_null_texture(); 1456 } 1457 1458 sk_sp<GrGLTexture> tex; 1459 if (isRenderTarget) { 1460 // unbind the texture from the texture unit before binding it to the frame buffer 1461 GL_CALL(BindTexture(idDesc.fInfo.fTarget, 0)); 1462 GrGLRenderTarget::IDDesc rtIDDesc; 1463 1464 if (!this->createRenderTargetObjects(desc, idDesc.fInfo, &rtIDDesc)) { 1465 GL_CALL(DeleteTextures(1, &idDesc.fInfo.fID)); 1466 return return_null_texture(); 1467 } 1468 tex = sk_make_sp<GrGLTextureRenderTarget>(this, budgeted, desc, idDesc, rtIDDesc, 1469 mipMapsStatus); 1470 tex->baseLevelWasBoundToFBO(); 1471 } else { 1472 tex = sk_make_sp<GrGLTexture>(this, budgeted, desc, idDesc, mipMapsStatus); 1473 } 1474 tex->setCachedTexParams(initialTexParams, this->getResetTimestamp()); 1475 #ifdef TRACE_TEXTURE_CREATION 1476 SkDebugf("--- new texture [%d] size=(%d %d) config=%d\n", 1477 idDesc.fInfo.fID, desc.fWidth, desc.fHeight, desc.fConfig); 1478 #endif 1479 if (tex && performClear) { 1480 if (this->glCaps().clearTextureSupport()) { 1481 GrGLenum format = GrPixelConfigIsSint(tex->config()) ? GR_GL_RGBA_INTEGER : GR_GL_RGBA; 1482 static constexpr uint32_t kZero = 0; 1483 GL_CALL(ClearTexImage(tex->textureID(), 0, format, GR_GL_UNSIGNED_BYTE, &kZero)); 1484 } else { 1485 SkASSERT(!GrPixelConfigIsSint(desc.fConfig)); 1486 GrGLIRect viewport; 1487 this->bindSurfaceFBOForPixelOps(tex.get(), GR_GL_FRAMEBUFFER, &viewport, 1488 kDst_TempFBOTarget); 1489 this->disableScissor(); 1490 this->disableWindowRectangles(); 1491 GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE)); 1492 fHWWriteToColor = kYes_TriState; 1493 GL_CALL(ClearColor(0, 0, 0, 0)); 1494 GL_CALL(Clear(GR_GL_COLOR_BUFFER_BIT)); 1495 this->unbindTextureFBOForPixelOps(GR_GL_FRAMEBUFFER, tex.get()); 1496 fHWBoundRenderTargetUniqueID.makeInvalid(); 1497 } 1498 } 1499 return tex; 1500 } 1501 1502 namespace { 1503 1504 const GrGLuint kUnknownBitCount = GrGLStencilAttachment::kUnknownBitCount; 1505 1506 void inline get_stencil_rb_sizes(const GrGLInterface* gl, 1507 GrGLStencilAttachment::Format* format) { 1508 1509 // we shouldn't ever know one size and not the other 1510 SkASSERT((kUnknownBitCount == format->fStencilBits) == 1511 (kUnknownBitCount == format->fTotalBits)); 1512 if (kUnknownBitCount == format->fStencilBits) { 1513 GR_GL_GetRenderbufferParameteriv(gl, GR_GL_RENDERBUFFER, 1514 GR_GL_RENDERBUFFER_STENCIL_SIZE, 1515 (GrGLint*)&format->fStencilBits); 1516 if (format->fPacked) { 1517 GR_GL_GetRenderbufferParameteriv(gl, GR_GL_RENDERBUFFER, 1518 GR_GL_RENDERBUFFER_DEPTH_SIZE, 1519 (GrGLint*)&format->fTotalBits); 1520 format->fTotalBits += format->fStencilBits; 1521 } else { 1522 format->fTotalBits = format->fStencilBits; 1523 } 1524 } 1525 } 1526 } 1527 1528 int GrGLGpu::getCompatibleStencilIndex(GrPixelConfig config) { 1529 static const int kSize = 16; 1530 SkASSERT(this->caps()->isConfigRenderable(config, false)); 1531 if (!this->glCaps().hasStencilFormatBeenDeterminedForConfig(config)) { 1532 // Default to unsupported, set this if we find a stencil format that works. 1533 int firstWorkingStencilFormatIndex = -1; 1534 1535 // Create color texture 1536 GrGLuint colorID = 0; 1537 GL_CALL(GenTextures(1, &colorID)); 1538 this->setScratchTextureUnit(); 1539 GL_CALL(BindTexture(GR_GL_TEXTURE_2D, colorID)); 1540 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 1541 GR_GL_TEXTURE_MAG_FILTER, 1542 GR_GL_NEAREST)); 1543 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 1544 GR_GL_TEXTURE_MIN_FILTER, 1545 GR_GL_NEAREST)); 1546 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 1547 GR_GL_TEXTURE_WRAP_S, 1548 GR_GL_CLAMP_TO_EDGE)); 1549 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 1550 GR_GL_TEXTURE_WRAP_T, 1551 GR_GL_CLAMP_TO_EDGE)); 1552 1553 GrGLenum internalFormat; 1554 GrGLenum externalFormat; 1555 GrGLenum externalType; 1556 if (!this->glCaps().getTexImageFormats(config, config, &internalFormat, &externalFormat, 1557 &externalType)) { 1558 return false; 1559 } 1560 this->unbindCpuToGpuXferBuffer(); 1561 CLEAR_ERROR_BEFORE_ALLOC(this->glInterface()); 1562 GL_ALLOC_CALL(this->glInterface(), TexImage2D(GR_GL_TEXTURE_2D, 1563 0, 1564 internalFormat, 1565 kSize, 1566 kSize, 1567 0, 1568 externalFormat, 1569 externalType, 1570 nullptr)); 1571 if (GR_GL_NO_ERROR != CHECK_ALLOC_ERROR(this->glInterface())) { 1572 GL_CALL(DeleteTextures(1, &colorID)); 1573 return -1; 1574 } 1575 1576 // unbind the texture from the texture unit before binding it to the frame buffer 1577 GL_CALL(BindTexture(GR_GL_TEXTURE_2D, 0)); 1578 1579 // Create Framebuffer 1580 GrGLuint fb = 0; 1581 GL_CALL(GenFramebuffers(1, &fb)); 1582 GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, fb)); 1583 fHWBoundRenderTargetUniqueID.makeInvalid(); 1584 GL_CALL(FramebufferTexture2D(GR_GL_FRAMEBUFFER, 1585 GR_GL_COLOR_ATTACHMENT0, 1586 GR_GL_TEXTURE_2D, 1587 colorID, 1588 0)); 1589 GrGLuint sbRBID = 0; 1590 GL_CALL(GenRenderbuffers(1, &sbRBID)); 1591 1592 // look over formats till I find a compatible one 1593 int stencilFmtCnt = this->glCaps().stencilFormats().count(); 1594 if (sbRBID) { 1595 GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, sbRBID)); 1596 for (int i = 0; i < stencilFmtCnt && sbRBID; ++i) { 1597 const GrGLCaps::StencilFormat& sFmt = this->glCaps().stencilFormats()[i]; 1598 CLEAR_ERROR_BEFORE_ALLOC(this->glInterface()); 1599 GL_ALLOC_CALL(this->glInterface(), RenderbufferStorage(GR_GL_RENDERBUFFER, 1600 sFmt.fInternalFormat, 1601 kSize, kSize)); 1602 if (GR_GL_NO_ERROR == CHECK_ALLOC_ERROR(this->glInterface())) { 1603 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1604 GR_GL_STENCIL_ATTACHMENT, 1605 GR_GL_RENDERBUFFER, sbRBID)); 1606 if (sFmt.fPacked) { 1607 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1608 GR_GL_DEPTH_ATTACHMENT, 1609 GR_GL_RENDERBUFFER, sbRBID)); 1610 } else { 1611 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1612 GR_GL_DEPTH_ATTACHMENT, 1613 GR_GL_RENDERBUFFER, 0)); 1614 } 1615 GrGLenum status; 1616 GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); 1617 if (status == GR_GL_FRAMEBUFFER_COMPLETE) { 1618 firstWorkingStencilFormatIndex = i; 1619 break; 1620 } 1621 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1622 GR_GL_STENCIL_ATTACHMENT, 1623 GR_GL_RENDERBUFFER, 0)); 1624 if (sFmt.fPacked) { 1625 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1626 GR_GL_DEPTH_ATTACHMENT, 1627 GR_GL_RENDERBUFFER, 0)); 1628 } 1629 } 1630 } 1631 GL_CALL(DeleteRenderbuffers(1, &sbRBID)); 1632 } 1633 GL_CALL(DeleteTextures(1, &colorID)); 1634 GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, 0)); 1635 GL_CALL(DeleteFramebuffers(1, &fb)); 1636 fGLContext->caps()->setStencilFormatIndexForConfig(config, firstWorkingStencilFormatIndex); 1637 } 1638 return this->glCaps().getStencilFormatIndexForConfig(config); 1639 } 1640 1641 bool GrGLGpu::createTextureImpl(const GrSurfaceDesc& desc, GrGLTextureInfo* info, 1642 bool renderTarget, GrGLTexture::TexParams* initialTexParams, 1643 const GrMipLevel texels[], int mipLevelCount, 1644 GrMipMapsStatus* mipMapsStatus) { 1645 info->fID = 0; 1646 info->fTarget = GR_GL_TEXTURE_2D; 1647 GL_CALL(GenTextures(1, &(info->fID))); 1648 1649 if (!info->fID) { 1650 return false; 1651 } 1652 1653 this->setScratchTextureUnit(); 1654 GL_CALL(BindTexture(info->fTarget, info->fID)); 1655 1656 if (renderTarget && this->glCaps().textureUsageSupport()) { 1657 // provides a hint about how this texture will be used 1658 GL_CALL(TexParameteri(info->fTarget, 1659 GR_GL_TEXTURE_USAGE, 1660 GR_GL_FRAMEBUFFER_ATTACHMENT)); 1661 } 1662 1663 if (info) { 1664 set_initial_texture_params(this->glInterface(), *info, initialTexParams); 1665 } 1666 if (!this->uploadTexData(desc.fConfig, desc.fWidth, desc.fHeight, desc.fOrigin, info->fTarget, 1667 kNewTexture_UploadType, 0, 0, desc.fWidth, desc.fHeight, desc.fConfig, 1668 texels, mipLevelCount, mipMapsStatus)) { 1669 GL_CALL(DeleteTextures(1, &(info->fID))); 1670 return false; 1671 } 1672 info->fFormat = this->glCaps().configSizedInternalFormat(desc.fConfig); 1673 return true; 1674 } 1675 1676 GrStencilAttachment* GrGLGpu::createStencilAttachmentForRenderTarget(const GrRenderTarget* rt, 1677 int width, int height) { 1678 SkASSERT(width >= rt->width()); 1679 SkASSERT(height >= rt->height()); 1680 1681 int samples = rt->numStencilSamples(); 1682 GrGLStencilAttachment::IDDesc sbDesc; 1683 1684 int sIdx = this->getCompatibleStencilIndex(rt->config()); 1685 if (sIdx < 0) { 1686 return nullptr; 1687 } 1688 1689 if (!sbDesc.fRenderbufferID) { 1690 GL_CALL(GenRenderbuffers(1, &sbDesc.fRenderbufferID)); 1691 } 1692 if (!sbDesc.fRenderbufferID) { 1693 return nullptr; 1694 } 1695 GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, sbDesc.fRenderbufferID)); 1696 const GrGLCaps::StencilFormat& sFmt = this->glCaps().stencilFormats()[sIdx]; 1697 CLEAR_ERROR_BEFORE_ALLOC(this->glInterface()); 1698 // we do this "if" so that we don't call the multisample 1699 // version on a GL that doesn't have an MSAA extension. 1700 if (samples > 1) { 1701 SkAssertResult(renderbuffer_storage_msaa(*fGLContext, 1702 samples, 1703 sFmt.fInternalFormat, 1704 width, height)); 1705 } else { 1706 GL_ALLOC_CALL(this->glInterface(), RenderbufferStorage(GR_GL_RENDERBUFFER, 1707 sFmt.fInternalFormat, 1708 width, height)); 1709 SkASSERT(GR_GL_NO_ERROR == CHECK_ALLOC_ERROR(this->glInterface())); 1710 } 1711 fStats.incStencilAttachmentCreates(); 1712 // After sized formats we attempt an unsized format and take 1713 // whatever sizes GL gives us. In that case we query for the size. 1714 GrGLStencilAttachment::Format format = sFmt; 1715 get_stencil_rb_sizes(this->glInterface(), &format); 1716 GrGLStencilAttachment* stencil = new GrGLStencilAttachment(this, 1717 sbDesc, 1718 width, 1719 height, 1720 samples, 1721 format); 1722 return stencil; 1723 } 1724 1725 //////////////////////////////////////////////////////////////////////////////// 1726 1727 // GL_STREAM_DRAW triggers an optimization in Chromium's GPU process where a client's vertex buffer 1728 // objects are implemented as client-side-arrays on tile-deferred architectures. 1729 #define DYNAMIC_USAGE_PARAM GR_GL_STREAM_DRAW 1730 1731 GrBuffer* GrGLGpu::onCreateBuffer(size_t size, GrBufferType intendedType, 1732 GrAccessPattern accessPattern, const void* data) { 1733 return GrGLBuffer::Create(this, size, intendedType, accessPattern, data); 1734 } 1735 1736 void GrGLGpu::flushScissor(const GrScissorState& scissorState, 1737 const GrGLIRect& rtViewport, 1738 GrSurfaceOrigin rtOrigin) { 1739 if (scissorState.enabled()) { 1740 GrGLIRect scissor; 1741 scissor.setRelativeTo(rtViewport, scissorState.rect(), rtOrigin); 1742 // if the scissor fully contains the viewport then we fall through and 1743 // disable the scissor test. 1744 if (!scissor.contains(rtViewport)) { 1745 if (fHWScissorSettings.fRect != scissor) { 1746 scissor.pushToGLScissor(this->glInterface()); 1747 fHWScissorSettings.fRect = scissor; 1748 } 1749 if (kYes_TriState != fHWScissorSettings.fEnabled) { 1750 GL_CALL(Enable(GR_GL_SCISSOR_TEST)); 1751 fHWScissorSettings.fEnabled = kYes_TriState; 1752 } 1753 return; 1754 } 1755 } 1756 1757 // See fall through note above 1758 this->disableScissor(); 1759 } 1760 1761 void GrGLGpu::flushWindowRectangles(const GrWindowRectsState& windowState, 1762 const GrGLRenderTarget* rt, GrSurfaceOrigin origin) { 1763 #ifndef USE_NSIGHT 1764 typedef GrWindowRectsState::Mode Mode; 1765 SkASSERT(!windowState.enabled() || rt->renderFBOID()); // Window rects can't be used on-screen. 1766 SkASSERT(windowState.numWindows() <= this->caps()->maxWindowRectangles()); 1767 1768 if (!this->caps()->maxWindowRectangles() || 1769 fHWWindowRectsState.knownEqualTo(origin, rt->getViewport(), windowState)) { 1770 return; 1771 } 1772 1773 // This is purely a workaround for a spurious warning generated by gcc. Otherwise the above 1774 // assert would be sufficient. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=5912 1775 int numWindows = SkTMin(windowState.numWindows(), int(GrWindowRectangles::kMaxWindows)); 1776 SkASSERT(windowState.numWindows() == numWindows); 1777 1778 GrGLIRect glwindows[GrWindowRectangles::kMaxWindows]; 1779 const SkIRect* skwindows = windowState.windows().data(); 1780 for (int i = 0; i < numWindows; ++i) { 1781 glwindows[i].setRelativeTo(rt->getViewport(), skwindows[i], origin); 1782 } 1783 1784 GrGLenum glmode = (Mode::kExclusive == windowState.mode()) ? GR_GL_EXCLUSIVE : GR_GL_INCLUSIVE; 1785 GL_CALL(WindowRectangles(glmode, numWindows, glwindows->asInts())); 1786 1787 fHWWindowRectsState.set(origin, rt->getViewport(), windowState); 1788 #endif 1789 } 1790 1791 void GrGLGpu::disableWindowRectangles() { 1792 #ifndef USE_NSIGHT 1793 if (!this->caps()->maxWindowRectangles() || fHWWindowRectsState.knownDisabled()) { 1794 return; 1795 } 1796 GL_CALL(WindowRectangles(GR_GL_EXCLUSIVE, 0, nullptr)); 1797 fHWWindowRectsState.setDisabled(); 1798 #endif 1799 } 1800 1801 void GrGLGpu::flushMinSampleShading(float minSampleShading) { 1802 if (fHWMinSampleShading != minSampleShading) { 1803 if (minSampleShading > 0.0) { 1804 GL_CALL(Enable(GR_GL_SAMPLE_SHADING)); 1805 GL_CALL(MinSampleShading(minSampleShading)); 1806 } 1807 else { 1808 GL_CALL(Disable(GR_GL_SAMPLE_SHADING)); 1809 } 1810 fHWMinSampleShading = minSampleShading; 1811 } 1812 } 1813 1814 bool GrGLGpu::flushGLState(const GrPipeline& pipeline, const GrPrimitiveProcessor& primProc, 1815 bool willDrawPoints) { 1816 sk_sp<GrGLProgram> program(fProgramCache->refProgram(this, pipeline, primProc, willDrawPoints)); 1817 if (!program) { 1818 GrCapsDebugf(this->caps(), "Failed to create program!\n"); 1819 return false; 1820 } 1821 1822 program->generateMipmaps(primProc, pipeline); 1823 1824 GrXferProcessor::BlendInfo blendInfo; 1825 pipeline.getXferProcessor().getBlendInfo(&blendInfo); 1826 1827 this->flushColorWrite(blendInfo.fWriteColor); 1828 this->flushMinSampleShading(primProc.getSampleShading()); 1829 1830 GrGLuint programID = program->programID(); 1831 if (fHWProgramID != programID) { 1832 GL_CALL(UseProgram(programID)); 1833 fHWProgramID = programID; 1834 } 1835 1836 if (blendInfo.fWriteColor) { 1837 // Swizzle the blend to match what the shader will output. 1838 const GrSwizzle& swizzle = this->caps()->shaderCaps()->configOutputSwizzle( 1839 pipeline.proxy()->config()); 1840 this->flushBlend(blendInfo, swizzle); 1841 } 1842 1843 program->setData(primProc, pipeline); 1844 1845 GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(pipeline.renderTarget()); 1846 GrStencilSettings stencil; 1847 if (pipeline.isStencilEnabled()) { 1848 // TODO: attach stencil and create settings during render target flush. 1849 SkASSERT(glRT->renderTargetPriv().getStencilAttachment()); 1850 stencil.reset(*pipeline.getUserStencil(), pipeline.hasStencilClip(), 1851 glRT->renderTargetPriv().numStencilBits()); 1852 } 1853 this->flushStencil(stencil); 1854 this->flushScissor(pipeline.getScissorState(), glRT->getViewport(), pipeline.proxy()->origin()); 1855 this->flushWindowRectangles(pipeline.getWindowRectsState(), glRT, pipeline.proxy()->origin()); 1856 this->flushHWAAState(glRT, pipeline.isHWAntialiasState(), !stencil.isDisabled()); 1857 1858 // This must come after textures are flushed because a texture may need 1859 // to be msaa-resolved (which will modify bound FBO state). 1860 this->flushRenderTarget(glRT, nullptr, pipeline.getDisableOutputConversionToSRGB()); 1861 1862 return true; 1863 } 1864 1865 void GrGLGpu::setupGeometry(const GrPrimitiveProcessor& primProc, 1866 const GrBuffer* indexBuffer, 1867 const GrBuffer* vertexBuffer, 1868 int baseVertex, 1869 const GrBuffer* instanceBuffer, 1870 int baseInstance) { 1871 using EnablePrimitiveRestart = GrGLAttribArrayState::EnablePrimitiveRestart; 1872 1873 GrGLAttribArrayState* attribState; 1874 if (indexBuffer) { 1875 SkASSERT(indexBuffer && !indexBuffer->isMapped()); 1876 attribState = fHWVertexArrayState.bindInternalVertexArray(this, indexBuffer); 1877 } else { 1878 attribState = fHWVertexArrayState.bindInternalVertexArray(this); 1879 } 1880 1881 struct { 1882 const GrBuffer* fBuffer; 1883 int fStride; 1884 size_t fBufferOffset; 1885 } bindings[2]; 1886 1887 if (int vertexStride = primProc.getVertexStride()) { 1888 SkASSERT(vertexBuffer && !vertexBuffer->isMapped()); 1889 bindings[0].fBuffer = vertexBuffer; 1890 bindings[0].fStride = vertexStride; 1891 bindings[0].fBufferOffset = vertexBuffer->baseOffset() + baseVertex * vertexStride; 1892 } 1893 if (int instanceStride = primProc.getInstanceStride()) { 1894 SkASSERT(instanceBuffer && !instanceBuffer->isMapped()); 1895 bindings[1].fBuffer = instanceBuffer; 1896 bindings[1].fStride = instanceStride; 1897 bindings[1].fBufferOffset = instanceBuffer->baseOffset() + baseInstance * instanceStride; 1898 } 1899 1900 int numAttribs = primProc.numAttribs(); 1901 auto enableRestart = EnablePrimitiveRestart(primProc.willUsePrimitiveRestart() && indexBuffer); 1902 attribState->enableVertexArrays(this, numAttribs, enableRestart); 1903 1904 for (int i = 0; i < numAttribs; ++i) { 1905 using InputRate = GrPrimitiveProcessor::Attribute::InputRate; 1906 const GrGeometryProcessor::Attribute& attrib = primProc.getAttrib(i); 1907 const int divisor = InputRate::kPerInstance == attrib.fInputRate ? 1 : 0; 1908 const auto& binding = bindings[divisor]; 1909 attribState->set(this, i, binding.fBuffer, attrib.fType, binding.fStride, 1910 binding.fBufferOffset + attrib.fOffsetInRecord, divisor); 1911 } 1912 } 1913 1914 GrGLenum GrGLGpu::bindBuffer(GrBufferType type, const GrBuffer* buffer) { 1915 this->handleDirtyContext(); 1916 1917 // Index buffer state is tied to the vertex array. 1918 if (kIndex_GrBufferType == type) { 1919 this->bindVertexArray(0); 1920 } 1921 1922 SkASSERT(type >= 0 && type <= kLast_GrBufferType); 1923 auto& bufferState = fHWBufferState[type]; 1924 1925 if (buffer->uniqueID() != bufferState.fBoundBufferUniqueID) { 1926 if (buffer->isCPUBacked()) { 1927 if (!bufferState.fBufferZeroKnownBound) { 1928 GL_CALL(BindBuffer(bufferState.fGLTarget, 0)); 1929 } 1930 } else { 1931 const GrGLBuffer* glBuffer = static_cast<const GrGLBuffer*>(buffer); 1932 GL_CALL(BindBuffer(bufferState.fGLTarget, glBuffer->bufferID())); 1933 } 1934 bufferState.fBufferZeroKnownBound = buffer->isCPUBacked(); 1935 bufferState.fBoundBufferUniqueID = buffer->uniqueID(); 1936 } 1937 1938 return bufferState.fGLTarget; 1939 } 1940 1941 void GrGLGpu::notifyBufferReleased(const GrGLBuffer* buffer) { 1942 if (buffer->hasAttachedToTexture()) { 1943 // Detach this buffer from any textures to ensure the underlying memory is freed. 1944 GrGpuResource::UniqueID uniqueID = buffer->uniqueID(); 1945 for (int i = fHWMaxUsedBufferTextureUnit; i >= 0; --i) { 1946 auto& buffTex = fHWBufferTextures[i]; 1947 if (uniqueID != buffTex.fAttachedBufferUniqueID) { 1948 continue; 1949 } 1950 if (i == fHWMaxUsedBufferTextureUnit) { 1951 --fHWMaxUsedBufferTextureUnit; 1952 } 1953 1954 this->setTextureUnit(i); 1955 if (!buffTex.fKnownBound) { 1956 SkASSERT(buffTex.fTextureID); 1957 GL_CALL(BindTexture(GR_GL_TEXTURE_BUFFER, buffTex.fTextureID)); 1958 buffTex.fKnownBound = true; 1959 } 1960 GL_CALL(TexBuffer(GR_GL_TEXTURE_BUFFER, 1961 this->glCaps().configSizedInternalFormat(buffTex.fTexelConfig), 0)); 1962 } 1963 } 1964 } 1965 1966 void GrGLGpu::disableScissor() { 1967 if (kNo_TriState != fHWScissorSettings.fEnabled) { 1968 GL_CALL(Disable(GR_GL_SCISSOR_TEST)); 1969 fHWScissorSettings.fEnabled = kNo_TriState; 1970 return; 1971 } 1972 } 1973 1974 void GrGLGpu::clear(const GrFixedClip& clip, GrColor color, 1975 GrRenderTarget* target, GrSurfaceOrigin origin) { 1976 // parent class should never let us get here with no RT 1977 SkASSERT(target); 1978 1979 this->handleDirtyContext(); 1980 1981 GrGLfloat r, g, b, a; 1982 static const GrGLfloat scale255 = 1.f / 255.f; 1983 a = GrColorUnpackA(color) * scale255; 1984 GrGLfloat scaleRGB = scale255; 1985 r = GrColorUnpackR(color) * scaleRGB; 1986 g = GrColorUnpackG(color) * scaleRGB; 1987 b = GrColorUnpackB(color) * scaleRGB; 1988 1989 if (this->glCaps().useDrawToClearColor()) { 1990 this->clearColorAsDraw(clip, r, g, b, a, target, origin); 1991 return; 1992 } 1993 1994 GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(target); 1995 1996 this->flushRenderTarget(glRT, clip.scissorEnabled() ? &clip.scissorRect() : nullptr); 1997 this->flushScissor(clip.scissorState(), glRT->getViewport(), origin); 1998 this->flushWindowRectangles(clip.windowRectsState(), glRT, origin); 1999 2000 GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE)); 2001 fHWWriteToColor = kYes_TriState; 2002 2003 if (this->glCaps().clearToBoundaryValuesIsBroken() && 2004 (1 == r || 0 == r) && (1 == g || 0 == g) && (1 == b || 0 == b) && (1 == a || 0 == a)) { 2005 static const GrGLfloat safeAlpha1 = nextafter(1.f, 2.f); 2006 static const GrGLfloat safeAlpha0 = nextafter(0.f, -1.f); 2007 a = (1 == a) ? safeAlpha1 : safeAlpha0; 2008 } 2009 GL_CALL(ClearColor(r, g, b, a)); 2010 GL_CALL(Clear(GR_GL_COLOR_BUFFER_BIT)); 2011 } 2012 2013 void GrGLGpu::clearStencil(GrRenderTarget* target, int clearValue) { 2014 if (!target) { 2015 return; 2016 } 2017 2018 GrStencilAttachment* sb = target->renderTargetPriv().getStencilAttachment(); 2019 // this should only be called internally when we know we have a 2020 // stencil buffer. 2021 SkASSERT(sb); 2022 2023 GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(target); 2024 this->flushRenderTarget(glRT, &SkIRect::EmptyIRect()); 2025 2026 this->disableScissor(); 2027 this->disableWindowRectangles(); 2028 2029 GL_CALL(StencilMask(0xffffffff)); 2030 GL_CALL(ClearStencil(clearValue)); 2031 GL_CALL(Clear(GR_GL_STENCIL_BUFFER_BIT)); 2032 fHWStencilSettings.invalidate(); 2033 if (!clearValue) { 2034 sb->cleared(); 2035 } 2036 } 2037 2038 void GrGLGpu::clearStencilClip(const GrFixedClip& clip, 2039 bool insideStencilMask, 2040 GrRenderTarget* target, GrSurfaceOrigin origin) { 2041 SkASSERT(target); 2042 this->handleDirtyContext(); 2043 2044 if (this->glCaps().useDrawToClearStencilClip()) { 2045 this->clearStencilClipAsDraw(clip, insideStencilMask, target, origin); 2046 return; 2047 } 2048 2049 GrStencilAttachment* sb = target->renderTargetPriv().getStencilAttachment(); 2050 // this should only be called internally when we know we have a 2051 // stencil buffer. 2052 SkASSERT(sb); 2053 GrGLint stencilBitCount = sb->bits(); 2054 #if 0 2055 SkASSERT(stencilBitCount > 0); 2056 GrGLint clipStencilMask = (1 << (stencilBitCount - 1)); 2057 #else 2058 // we could just clear the clip bit but when we go through 2059 // ANGLE a partial stencil mask will cause clears to be 2060 // turned into draws. Our contract on GrOpList says that 2061 // changing the clip between stencil passes may or may not 2062 // zero the client's clip bits. So we just clear the whole thing. 2063 static const GrGLint clipStencilMask = ~0; 2064 #endif 2065 GrGLint value; 2066 if (insideStencilMask) { 2067 value = (1 << (stencilBitCount - 1)); 2068 } else { 2069 value = 0; 2070 } 2071 GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(target); 2072 this->flushRenderTarget(glRT, &SkIRect::EmptyIRect()); 2073 2074 this->flushScissor(clip.scissorState(), glRT->getViewport(), origin); 2075 this->flushWindowRectangles(clip.windowRectsState(), glRT, origin); 2076 2077 GL_CALL(StencilMask((uint32_t) clipStencilMask)); 2078 GL_CALL(ClearStencil(value)); 2079 GL_CALL(Clear(GR_GL_STENCIL_BUFFER_BIT)); 2080 fHWStencilSettings.invalidate(); 2081 } 2082 2083 static bool read_pixels_pays_for_y_flip(GrSurfaceOrigin origin, const GrGLCaps& caps, 2084 int width, int height, GrPixelConfig config, 2085 size_t rowBytes) { 2086 // If the surface is already TopLeft, we don't need to flip. 2087 if (kTopLeft_GrSurfaceOrigin == origin) { 2088 return false; 2089 } 2090 2091 // If the read is really small or smaller than the min texture size, don't force a draw. 2092 static const int kMinSize = 32; 2093 if (width < kMinSize || height < kMinSize) { 2094 return false; 2095 } 2096 2097 // if GL can do the flip then we'll never pay for it. 2098 if (caps.packFlipYSupport()) { 2099 return false; 2100 } 2101 2102 // If we have to do memcpy to handle non-trim rowBytes then we 2103 // get the flip for free. Otherwise it costs. 2104 // Note that we're assuming that 0 rowBytes has already been handled and that the width has been 2105 // clipped. 2106 return caps.packRowLengthSupport() || GrBytesPerPixel(config) * width == rowBytes; 2107 } 2108 2109 bool GrGLGpu::readPixelsSupported(GrRenderTarget* target, GrPixelConfig readConfig) { 2110 #ifdef SK_BUILD_FOR_MAC 2111 // Chromium may ask us to read back from locked IOSurfaces. Calling the command buffer's 2112 // glGetIntegerv() with GL_IMPLEMENTATION_COLOR_READ_FORMAT/_TYPE causes the command buffer 2113 // to make a call to check the framebuffer status which can hang the driver. So in Mac Chromium 2114 // we always use a temporary surface to test for read pixels support. 2115 // https://www.crbug.com/662802 2116 if (this->glContext().driver() == kChromium_GrGLDriver) { 2117 return this->readPixelsSupported(target->config(), readConfig); 2118 } 2119 #endif 2120 auto bindRenderTarget = [this, target]() -> bool { 2121 this->flushRenderTarget(static_cast<GrGLRenderTarget*>(target), &SkIRect::EmptyIRect()); 2122 return true; 2123 }; 2124 auto unbindRenderTarget = []{}; 2125 auto getIntegerv = [this](GrGLenum query, GrGLint* value) { 2126 GR_GL_GetIntegerv(this->glInterface(), query, value); 2127 }; 2128 GrPixelConfig rtConfig = target->config(); 2129 return this->glCaps().readPixelsSupported(rtConfig, readConfig, getIntegerv, bindRenderTarget, 2130 unbindRenderTarget); 2131 } 2132 2133 bool GrGLGpu::readPixelsSupported(GrPixelConfig rtConfig, GrPixelConfig readConfig) { 2134 sk_sp<GrTexture> temp; 2135 auto bindRenderTarget = [this, rtConfig, &temp]() -> bool { 2136 GrSurfaceDesc desc; 2137 desc.fConfig = rtConfig; 2138 desc.fWidth = desc.fHeight = 16; 2139 if (this->glCaps().isConfigRenderable(rtConfig, false)) { 2140 desc.fFlags = kRenderTarget_GrSurfaceFlag; 2141 desc.fOrigin = kBottomLeft_GrSurfaceOrigin; 2142 temp = this->createTexture(desc, SkBudgeted::kNo); 2143 if (!temp) { 2144 return false; 2145 } 2146 GrGLRenderTarget* glrt = static_cast<GrGLRenderTarget*>(temp->asRenderTarget()); 2147 this->flushRenderTarget(glrt, &SkIRect::EmptyIRect()); 2148 return true; 2149 } else if (this->glCaps().canConfigBeFBOColorAttachment(rtConfig)) { 2150 desc.fOrigin = kTopLeft_GrSurfaceOrigin; 2151 temp = this->createTexture(desc, SkBudgeted::kNo); 2152 if (!temp) { 2153 return false; 2154 } 2155 GrGLIRect vp; 2156 this->bindSurfaceFBOForPixelOps(temp.get(), GR_GL_FRAMEBUFFER, &vp, kDst_TempFBOTarget); 2157 fHWBoundRenderTargetUniqueID.makeInvalid(); 2158 return true; 2159 } 2160 return false; 2161 }; 2162 auto unbindRenderTarget = [this, &temp]() { 2163 this->unbindTextureFBOForPixelOps(GR_GL_FRAMEBUFFER, temp.get()); 2164 }; 2165 auto getIntegerv = [this](GrGLenum query, GrGLint* value) { 2166 GR_GL_GetIntegerv(this->glInterface(), query, value); 2167 }; 2168 return this->glCaps().readPixelsSupported(rtConfig, readConfig, getIntegerv, bindRenderTarget, 2169 unbindRenderTarget); 2170 } 2171 2172 bool GrGLGpu::readPixelsSupported(GrSurface* surfaceForConfig, GrPixelConfig readConfig) { 2173 if (GrRenderTarget* rt = surfaceForConfig->asRenderTarget()) { 2174 return this->readPixelsSupported(rt, readConfig); 2175 } else { 2176 GrPixelConfig config = surfaceForConfig->config(); 2177 return this->readPixelsSupported(config, readConfig); 2178 } 2179 } 2180 2181 static bool requires_srgb_conversion(GrPixelConfig a, GrPixelConfig b) { 2182 if (GrPixelConfigIsSRGB(a)) { 2183 return !GrPixelConfigIsSRGB(b) && !GrPixelConfigIsAlphaOnly(b); 2184 } else if (GrPixelConfigIsSRGB(b)) { 2185 return !GrPixelConfigIsSRGB(a) && !GrPixelConfigIsAlphaOnly(a); 2186 } 2187 return false; 2188 } 2189 2190 bool GrGLGpu::onGetReadPixelsInfo(GrSurface* srcSurface, GrSurfaceOrigin srcOrigin, 2191 int width, int height, size_t rowBytes, 2192 GrPixelConfig readConfig, DrawPreference* drawPreference, 2193 ReadPixelTempDrawInfo* tempDrawInfo) { 2194 GrPixelConfig srcConfig = srcSurface->config(); 2195 2196 // These settings we will always want if a temp draw is performed. 2197 tempDrawInfo->fTempSurfaceDesc.fFlags = kRenderTarget_GrSurfaceFlag; 2198 tempDrawInfo->fTempSurfaceDesc.fWidth = width; 2199 tempDrawInfo->fTempSurfaceDesc.fHeight = height; 2200 tempDrawInfo->fTempSurfaceDesc.fSampleCnt = 1; 2201 tempDrawInfo->fTempSurfaceDesc.fOrigin = kTopLeft_GrSurfaceOrigin; // no CPU y-flip for TL. 2202 tempDrawInfo->fTempSurfaceFit = this->glCaps().partialFBOReadIsSlow() ? SkBackingFit::kExact 2203 : SkBackingFit::kApprox; 2204 // For now assume no swizzling, we may change that below. 2205 tempDrawInfo->fSwizzle = GrSwizzle::RGBA(); 2206 2207 // Depends on why we need/want a temp draw. Start off assuming no change, the surface we read 2208 // from will be srcConfig and we will read readConfig pixels from it. 2209 // Note that if we require a draw and return a non-renderable format for the temp surface the 2210 // base class will fail for us. 2211 tempDrawInfo->fTempSurfaceDesc.fConfig = srcConfig; 2212 tempDrawInfo->fReadConfig = readConfig; 2213 2214 if (requires_srgb_conversion(srcConfig, readConfig)) { 2215 if (!this->readPixelsSupported(readConfig, readConfig)) { 2216 return false; 2217 } 2218 // Draw to do srgb to linear conversion or vice versa. 2219 ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference); 2220 tempDrawInfo->fTempSurfaceDesc.fConfig = readConfig; 2221 tempDrawInfo->fReadConfig = readConfig; 2222 return true; 2223 } 2224 2225 if (this->glCaps().rgba8888PixelsOpsAreSlow() && kRGBA_8888_GrPixelConfig == readConfig && 2226 this->readPixelsSupported(kBGRA_8888_GrPixelConfig, kBGRA_8888_GrPixelConfig)) { 2227 tempDrawInfo->fTempSurfaceDesc.fConfig = kBGRA_8888_GrPixelConfig; 2228 tempDrawInfo->fSwizzle = GrSwizzle::BGRA(); 2229 tempDrawInfo->fReadConfig = kBGRA_8888_GrPixelConfig; 2230 ElevateDrawPreference(drawPreference, kGpuPrefersDraw_DrawPreference); 2231 } else if (this->glCaps().rgbaToBgraReadbackConversionsAreSlow() && 2232 GrBytesPerPixel(readConfig) == 4 && 2233 GrPixelConfigSwapRAndB(readConfig) == srcConfig && 2234 this->readPixelsSupported(srcSurface, srcConfig)) { 2235 // Mesa 3D takes a slow path on when reading back BGRA from an RGBA surface and vice-versa. 2236 // Better to do a draw with a R/B swap and then read as the original config. 2237 tempDrawInfo->fTempSurfaceDesc.fConfig = srcConfig; 2238 tempDrawInfo->fSwizzle = GrSwizzle::BGRA(); 2239 tempDrawInfo->fReadConfig = srcConfig; 2240 ElevateDrawPreference(drawPreference, kGpuPrefersDraw_DrawPreference); 2241 } else if (!this->readPixelsSupported(srcSurface, readConfig)) { 2242 if (readConfig == kBGRA_8888_GrPixelConfig && 2243 this->glCaps().canConfigBeFBOColorAttachment(kRGBA_8888_GrPixelConfig) && 2244 this->readPixelsSupported(kRGBA_8888_GrPixelConfig, kRGBA_8888_GrPixelConfig)) { 2245 // We're trying to read BGRA but it's not supported. If RGBA is renderable and 2246 // we can read it back, then do a swizzling draw to a RGBA and read it back (which 2247 // will effectively be BGRA). 2248 tempDrawInfo->fTempSurfaceDesc.fConfig = kRGBA_8888_GrPixelConfig; 2249 tempDrawInfo->fSwizzle = GrSwizzle::BGRA(); 2250 tempDrawInfo->fReadConfig = kRGBA_8888_GrPixelConfig; 2251 ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference); 2252 } else if (readConfig == kSBGRA_8888_GrPixelConfig && 2253 this->glCaps().canConfigBeFBOColorAttachment(kSRGBA_8888_GrPixelConfig) && 2254 this->readPixelsSupported(kSRGBA_8888_GrPixelConfig, kSRGBA_8888_GrPixelConfig)) { 2255 // We're trying to read sBGRA but it's not supported. If sRGBA is renderable and 2256 // we can read it back, then do a swizzling draw to a sRGBA and read it back (which 2257 // will effectively be sBGRA). 2258 tempDrawInfo->fTempSurfaceDesc.fConfig = kSRGBA_8888_GrPixelConfig; 2259 tempDrawInfo->fSwizzle = GrSwizzle::BGRA(); 2260 tempDrawInfo->fReadConfig = kSRGBA_8888_GrPixelConfig; 2261 ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference); 2262 } else if (readConfig == kAlpha_8_GrPixelConfig) { 2263 // onReadPixels implements a fallback for cases where we are want to read kAlpha_8, 2264 // it's unsupported, but 32bit RGBA reads are supported. 2265 // Don't attempt to do any srgb conversions since we only care about alpha. 2266 GrPixelConfig cpuTempConfig = kRGBA_8888_GrPixelConfig; 2267 if (GrPixelConfigIsSRGB(srcSurface->config())) { 2268 cpuTempConfig = kSRGBA_8888_GrPixelConfig; 2269 } 2270 if (!this->readPixelsSupported(srcSurface, cpuTempConfig)) { 2271 // If we can't read RGBA from the src try to draw to a kRGBA_8888 (or kSRGBA_8888) 2272 // first and then onReadPixels will read that to a 32bit temporary buffer. 2273 if (this->glCaps().canConfigBeFBOColorAttachment(cpuTempConfig)) { 2274 ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference); 2275 tempDrawInfo->fTempSurfaceDesc.fConfig = cpuTempConfig; 2276 tempDrawInfo->fReadConfig = kAlpha_8_GrPixelConfig; 2277 } else { 2278 return false; 2279 } 2280 } else { 2281 SkASSERT(tempDrawInfo->fTempSurfaceDesc.fConfig == srcConfig); 2282 SkASSERT(tempDrawInfo->fReadConfig == kAlpha_8_GrPixelConfig); 2283 } 2284 } else if (readConfig == kRGBA_half_GrPixelConfig && 2285 this->readPixelsSupported(srcSurface, kRGBA_float_GrPixelConfig)) { 2286 // If reading in half float format is not supported, then read in float format. 2287 return true; 2288 } else if (this->glCaps().canConfigBeFBOColorAttachment(readConfig) && 2289 this->readPixelsSupported(readConfig, readConfig)) { 2290 // Do a draw to convert from the src config to the read config. 2291 ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference); 2292 tempDrawInfo->fTempSurfaceDesc.fConfig = readConfig; 2293 tempDrawInfo->fReadConfig = readConfig; 2294 } else { 2295 return false; 2296 } 2297 } 2298 2299 if ((srcSurface->asRenderTarget() || this->glCaps().canConfigBeFBOColorAttachment(srcConfig)) && 2300 read_pixels_pays_for_y_flip(srcOrigin, this->glCaps(), width, height, readConfig, 2301 rowBytes)) { 2302 ElevateDrawPreference(drawPreference, kGpuPrefersDraw_DrawPreference); 2303 } 2304 2305 return true; 2306 } 2307 2308 bool GrGLGpu::onReadPixels(GrSurface* surface, GrSurfaceOrigin origin, 2309 int left, int top, 2310 int width, int height, 2311 GrPixelConfig config, 2312 void* buffer, 2313 size_t rowBytes) { 2314 SkASSERT(surface); 2315 2316 GrGLRenderTarget* renderTarget = static_cast<GrGLRenderTarget*>(surface->asRenderTarget()); 2317 if (!renderTarget && !this->glCaps().canConfigBeFBOColorAttachment(surface->config())) { 2318 return false; 2319 } 2320 2321 // OpenGL doesn't do sRGB <-> linear conversions when reading and writing pixels. 2322 if (requires_srgb_conversion(surface->config(), config)) { 2323 return false; 2324 } 2325 2326 // We have a special case fallback for reading eight bit alpha. We will read back all four 8 2327 // bit channels as RGBA and then extract A. 2328 if (!this->readPixelsSupported(surface, config)) { 2329 // Don't attempt to do any srgb conversions since we only care about alpha. 2330 GrPixelConfig tempConfig = kRGBA_8888_GrPixelConfig; 2331 if (GrPixelConfigIsSRGB(surface->config())) { 2332 tempConfig = kSRGBA_8888_GrPixelConfig; 2333 } 2334 if (kAlpha_8_GrPixelConfig == config && 2335 this->readPixelsSupported(surface, tempConfig)) { 2336 std::unique_ptr<uint32_t[]> temp(new uint32_t[width * height * 4]); 2337 if (this->onReadPixels(surface, origin, left, top, width, height, 2338 tempConfig, temp.get(), width*4)) { 2339 uint8_t* dst = reinterpret_cast<uint8_t*>(buffer); 2340 for (int j = 0; j < height; ++j) { 2341 for (int i = 0; i < width; ++i) { 2342 dst[j*rowBytes + i] = (0xFF000000U & temp[j*width+i]) >> 24; 2343 } 2344 } 2345 return true; 2346 } 2347 } 2348 2349 // If reading in half float format is not supported, then read in a temporary float buffer 2350 // and convert to half float. 2351 if (kRGBA_half_GrPixelConfig == config && 2352 this->readPixelsSupported(surface, kRGBA_float_GrPixelConfig)) { 2353 std::unique_ptr<float[]> temp(new float[width * height * 4]); 2354 if (this->onReadPixels(surface, origin, left, top, width, height, 2355 kRGBA_float_GrPixelConfig, temp.get(), 2356 width*sizeof(float)*4)) { 2357 uint8_t* dst = reinterpret_cast<uint8_t*>(buffer); 2358 float* src = temp.get(); 2359 for (int j = 0; j < height; ++j) { 2360 SkHalf* dstRow = reinterpret_cast<SkHalf*>(dst); 2361 for (int i = 0; i < width; ++i) { 2362 for (int color = 0; color < 4; color++) { 2363 *dstRow++ = SkFloatToHalf(*src++); 2364 } 2365 } 2366 dst += rowBytes; 2367 } 2368 return true; 2369 } 2370 } 2371 return false; 2372 } 2373 2374 GrGLenum externalFormat; 2375 GrGLenum externalType; 2376 if (!this->glCaps().getReadPixelsFormat(surface->config(), config, &externalFormat, 2377 &externalType)) { 2378 return false; 2379 } 2380 bool flipY = kBottomLeft_GrSurfaceOrigin == origin; 2381 2382 GrGLIRect glvp; 2383 if (renderTarget) { 2384 // resolve the render target if necessary 2385 switch (renderTarget->getResolveType()) { 2386 case GrGLRenderTarget::kCantResolve_ResolveType: 2387 return false; 2388 case GrGLRenderTarget::kAutoResolves_ResolveType: 2389 this->flushRenderTarget(renderTarget, &SkIRect::EmptyIRect()); 2390 break; 2391 case GrGLRenderTarget::kCanResolve_ResolveType: 2392 this->onResolveRenderTarget(renderTarget, origin); 2393 // we don't track the state of the READ FBO ID. 2394 fStats.incRenderTargetBinds(); 2395 GL_CALL(BindFramebuffer(GR_GL_READ_FRAMEBUFFER, renderTarget->textureFBOID())); 2396 break; 2397 default: 2398 SK_ABORT("Unknown resolve type"); 2399 } 2400 glvp = renderTarget->getViewport(); 2401 } else { 2402 // Use a temporary FBO. 2403 this->bindSurfaceFBOForPixelOps(surface, GR_GL_FRAMEBUFFER, &glvp, kSrc_TempFBOTarget); 2404 fHWBoundRenderTargetUniqueID.makeInvalid(); 2405 } 2406 2407 // the read rect is viewport-relative 2408 GrGLIRect readRect; 2409 readRect.setRelativeTo(glvp, left, top, width, height, origin); 2410 2411 size_t bytesPerPixel = GrBytesPerPixel(config); 2412 size_t tightRowBytes = bytesPerPixel * width; 2413 2414 size_t readDstRowBytes = tightRowBytes; 2415 void* readDst = buffer; 2416 2417 // determine if GL can read using the passed rowBytes or if we need 2418 // a scratch buffer. 2419 SkAutoSMalloc<32 * sizeof(GrColor)> scratch; 2420 if (rowBytes != tightRowBytes) { 2421 if (this->glCaps().packRowLengthSupport() && !(rowBytes % bytesPerPixel)) { 2422 GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 2423 static_cast<GrGLint>(rowBytes / bytesPerPixel))); 2424 readDstRowBytes = rowBytes; 2425 } else { 2426 scratch.reset(tightRowBytes * height); 2427 readDst = scratch.get(); 2428 } 2429 } 2430 if (flipY && this->glCaps().packFlipYSupport()) { 2431 GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, 1)); 2432 } 2433 GL_CALL(PixelStorei(GR_GL_PACK_ALIGNMENT, config_alignment(config))); 2434 2435 GL_CALL(ReadPixels(readRect.fLeft, readRect.fBottom, 2436 readRect.fWidth, readRect.fHeight, 2437 externalFormat, externalType, readDst)); 2438 if (readDstRowBytes != tightRowBytes) { 2439 SkASSERT(this->glCaps().packRowLengthSupport()); 2440 GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 0)); 2441 } 2442 if (flipY && this->glCaps().packFlipYSupport()) { 2443 GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, 0)); 2444 flipY = false; 2445 } 2446 2447 // now reverse the order of the rows, since GL's are bottom-to-top, but our 2448 // API presents top-to-bottom. We must preserve the padding contents. Note 2449 // that the above readPixels did not overwrite the padding. 2450 if (readDst == buffer) { 2451 SkASSERT(rowBytes == readDstRowBytes); 2452 if (flipY) { 2453 scratch.reset(tightRowBytes); 2454 void* tmpRow = scratch.get(); 2455 // flip y in-place by rows 2456 const int halfY = height >> 1; 2457 char* top = reinterpret_cast<char*>(buffer); 2458 char* bottom = top + (height - 1) * rowBytes; 2459 for (int y = 0; y < halfY; y++) { 2460 memcpy(tmpRow, top, tightRowBytes); 2461 memcpy(top, bottom, tightRowBytes); 2462 memcpy(bottom, tmpRow, tightRowBytes); 2463 top += rowBytes; 2464 bottom -= rowBytes; 2465 } 2466 } 2467 } else { 2468 SkASSERT(readDst != buffer); 2469 SkASSERT(rowBytes != tightRowBytes); 2470 // copy from readDst to buffer while flipping y 2471 // const int halfY = height >> 1; 2472 const char* src = reinterpret_cast<const char*>(readDst); 2473 char* dst = reinterpret_cast<char*>(buffer); 2474 if (flipY) { 2475 dst += (height-1) * rowBytes; 2476 } 2477 for (int y = 0; y < height; y++) { 2478 memcpy(dst, src, tightRowBytes); 2479 src += readDstRowBytes; 2480 if (!flipY) { 2481 dst += rowBytes; 2482 } else { 2483 dst -= rowBytes; 2484 } 2485 } 2486 } 2487 if (!renderTarget) { 2488 this->unbindTextureFBOForPixelOps(GR_GL_FRAMEBUFFER, surface); 2489 } 2490 return true; 2491 } 2492 2493 GrGpuRTCommandBuffer* GrGLGpu::createCommandBuffer( 2494 GrRenderTarget* rt, GrSurfaceOrigin origin, 2495 const GrGpuRTCommandBuffer::LoadAndStoreInfo& colorInfo, 2496 const GrGpuRTCommandBuffer::StencilLoadAndStoreInfo& stencilInfo) { 2497 return new GrGLGpuRTCommandBuffer(this, rt, origin, colorInfo, stencilInfo); 2498 } 2499 2500 GrGpuTextureCommandBuffer* GrGLGpu::createCommandBuffer(GrTexture* texture, 2501 GrSurfaceOrigin origin) { 2502 return new GrGLGpuTextureCommandBuffer(this, texture, origin); 2503 } 2504 2505 void GrGLGpu::flushRenderTarget(GrGLRenderTarget* target, const SkIRect* bounds, bool disableSRGB) { 2506 SkASSERT(target); 2507 2508 GrGpuResource::UniqueID rtID = target->uniqueID(); 2509 if (fHWBoundRenderTargetUniqueID != rtID) { 2510 fStats.incRenderTargetBinds(); 2511 GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, target->renderFBOID())); 2512 #ifdef SK_DEBUG 2513 // don't do this check in Chromium -- this is causing 2514 // lots of repeated command buffer flushes when the compositor is 2515 // rendering with Ganesh, which is really slow; even too slow for 2516 // Debug mode. 2517 if (kChromium_GrGLDriver != this->glContext().driver()) { 2518 GrGLenum status; 2519 GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); 2520 if (status != GR_GL_FRAMEBUFFER_COMPLETE) { 2521 SkDebugf("GrGLGpu::flushRenderTarget glCheckFramebufferStatus %x\n", status); 2522 } 2523 } 2524 #endif 2525 fHWBoundRenderTargetUniqueID = rtID; 2526 this->flushViewport(target->getViewport()); 2527 } 2528 2529 if (this->glCaps().srgbWriteControl()) { 2530 this->flushFramebufferSRGB(GrPixelConfigIsSRGB(target->config()) && !disableSRGB); 2531 } 2532 2533 this->didWriteToSurface(target, bounds); 2534 } 2535 2536 void GrGLGpu::flushFramebufferSRGB(bool enable) { 2537 if (enable && kYes_TriState != fHWSRGBFramebuffer) { 2538 GL_CALL(Enable(GR_GL_FRAMEBUFFER_SRGB)); 2539 fHWSRGBFramebuffer = kYes_TriState; 2540 } else if (!enable && kNo_TriState != fHWSRGBFramebuffer) { 2541 GL_CALL(Disable(GR_GL_FRAMEBUFFER_SRGB)); 2542 fHWSRGBFramebuffer = kNo_TriState; 2543 } 2544 } 2545 2546 void GrGLGpu::flushViewport(const GrGLIRect& viewport) { 2547 if (fHWViewport != viewport) { 2548 viewport.pushToGLViewport(this->glInterface()); 2549 fHWViewport = viewport; 2550 } 2551 } 2552 2553 #define SWAP_PER_DRAW 0 2554 2555 #if SWAP_PER_DRAW 2556 #if defined(SK_BUILD_FOR_MAC) 2557 #include <AGL/agl.h> 2558 #elif defined(SK_BUILD_FOR_WIN) 2559 #include <gl/GL.h> 2560 void SwapBuf() { 2561 DWORD procID = GetCurrentProcessId(); 2562 HWND hwnd = GetTopWindow(GetDesktopWindow()); 2563 while(hwnd) { 2564 DWORD wndProcID = 0; 2565 GetWindowThreadProcessId(hwnd, &wndProcID); 2566 if(wndProcID == procID) { 2567 SwapBuffers(GetDC(hwnd)); 2568 } 2569 hwnd = GetNextWindow(hwnd, GW_HWNDNEXT); 2570 } 2571 } 2572 #endif 2573 #endif 2574 2575 void GrGLGpu::draw(const GrPipeline& pipeline, 2576 const GrPrimitiveProcessor& primProc, 2577 const GrMesh meshes[], 2578 const GrPipeline::DynamicState dynamicStates[], 2579 int meshCount) { 2580 this->handleDirtyContext(); 2581 2582 bool hasPoints = false; 2583 for (int i = 0; i < meshCount; ++i) { 2584 if (meshes[i].primitiveType() == GrPrimitiveType::kPoints) { 2585 hasPoints = true; 2586 break; 2587 } 2588 } 2589 if (!this->flushGLState(pipeline, primProc, hasPoints)) { 2590 return; 2591 } 2592 2593 for (int i = 0; i < meshCount; ++i) { 2594 if (GrXferBarrierType barrierType = pipeline.xferBarrierType(*this->caps())) { 2595 this->xferBarrier(pipeline.renderTarget(), barrierType); 2596 } 2597 2598 if (dynamicStates) { 2599 if (pipeline.getScissorState().enabled()) { 2600 GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(pipeline.renderTarget()); 2601 this->flushScissor(dynamicStates[i].fScissorRect, 2602 glRT->getViewport(), pipeline.proxy()->origin()); 2603 } 2604 } 2605 if (this->glCaps().requiresCullFaceEnableDisableWhenDrawingLinesAfterNonLines() && 2606 GrIsPrimTypeLines(meshes[i].primitiveType()) && 2607 !GrIsPrimTypeLines(fLastPrimitiveType)) { 2608 GL_CALL(Enable(GR_GL_CULL_FACE)); 2609 GL_CALL(Disable(GR_GL_CULL_FACE)); 2610 } 2611 meshes[i].sendToGpu(primProc, this); 2612 fLastPrimitiveType = meshes[i].primitiveType(); 2613 } 2614 2615 #if SWAP_PER_DRAW 2616 glFlush(); 2617 #if defined(SK_BUILD_FOR_MAC) 2618 aglSwapBuffers(aglGetCurrentContext()); 2619 int set_a_break_pt_here = 9; 2620 aglSwapBuffers(aglGetCurrentContext()); 2621 #elif defined(SK_BUILD_FOR_WIN) 2622 SwapBuf(); 2623 int set_a_break_pt_here = 9; 2624 SwapBuf(); 2625 #endif 2626 #endif 2627 } 2628 2629 static GrGLenum gr_primitive_type_to_gl_mode(GrPrimitiveType primitiveType) { 2630 switch (primitiveType) { 2631 case GrPrimitiveType::kTriangles: 2632 return GR_GL_TRIANGLES; 2633 case GrPrimitiveType::kTriangleStrip: 2634 return GR_GL_TRIANGLE_STRIP; 2635 case GrPrimitiveType::kTriangleFan: 2636 return GR_GL_TRIANGLE_FAN; 2637 case GrPrimitiveType::kPoints: 2638 return GR_GL_POINTS; 2639 case GrPrimitiveType::kLines: 2640 return GR_GL_LINES; 2641 case GrPrimitiveType::kLineStrip: 2642 return GR_GL_LINE_STRIP; 2643 case GrPrimitiveType::kLinesAdjacency: 2644 return GR_GL_LINES_ADJACENCY; 2645 } 2646 SK_ABORT("invalid GrPrimitiveType"); 2647 return GR_GL_TRIANGLES; 2648 } 2649 2650 void GrGLGpu::sendMeshToGpu(const GrPrimitiveProcessor& primProc, GrPrimitiveType primitiveType, 2651 const GrBuffer* vertexBuffer, int vertexCount, int baseVertex) { 2652 const GrGLenum glPrimType = gr_primitive_type_to_gl_mode(primitiveType); 2653 if (this->glCaps().drawArraysBaseVertexIsBroken()) { 2654 this->setupGeometry(primProc, nullptr, vertexBuffer, baseVertex, nullptr, 0); 2655 GL_CALL(DrawArrays(glPrimType, 0, vertexCount)); 2656 } else { 2657 this->setupGeometry(primProc, nullptr, vertexBuffer, 0, nullptr, 0); 2658 GL_CALL(DrawArrays(glPrimType, baseVertex, vertexCount)); 2659 } 2660 fStats.incNumDraws(); 2661 } 2662 2663 void GrGLGpu::sendIndexedMeshToGpu(const GrPrimitiveProcessor& primProc, 2664 GrPrimitiveType primitiveType, const GrBuffer* indexBuffer, 2665 int indexCount, int baseIndex, uint16_t minIndexValue, 2666 uint16_t maxIndexValue, const GrBuffer* vertexBuffer, 2667 int baseVertex) { 2668 const GrGLenum glPrimType = gr_primitive_type_to_gl_mode(primitiveType); 2669 GrGLvoid* const indices = reinterpret_cast<void*>(indexBuffer->baseOffset() + 2670 sizeof(uint16_t) * baseIndex); 2671 2672 this->setupGeometry(primProc, indexBuffer, vertexBuffer, baseVertex, nullptr, 0); 2673 2674 if (this->glCaps().drawRangeElementsSupport()) { 2675 GL_CALL(DrawRangeElements(glPrimType, minIndexValue, maxIndexValue, indexCount, 2676 GR_GL_UNSIGNED_SHORT, indices)); 2677 } else { 2678 GL_CALL(DrawElements(glPrimType, indexCount, GR_GL_UNSIGNED_SHORT, indices)); 2679 } 2680 fStats.incNumDraws(); 2681 } 2682 2683 void GrGLGpu::sendInstancedMeshToGpu(const GrPrimitiveProcessor& primProc, GrPrimitiveType 2684 primitiveType, const GrBuffer* vertexBuffer, 2685 int vertexCount, int baseVertex, 2686 const GrBuffer* instanceBuffer, int instanceCount, 2687 int baseInstance) { 2688 GrGLenum glPrimType = gr_primitive_type_to_gl_mode(primitiveType); 2689 int maxInstances = this->glCaps().maxInstancesPerDrawArraysWithoutCrashing(instanceCount); 2690 for (int i = 0; i < instanceCount; i += maxInstances) { 2691 this->setupGeometry(primProc, nullptr, vertexBuffer, 0, instanceBuffer, baseInstance + i); 2692 GL_CALL(DrawArraysInstanced(glPrimType, baseVertex, vertexCount, 2693 SkTMin(instanceCount - i, maxInstances))); 2694 fStats.incNumDraws(); 2695 } 2696 } 2697 2698 void GrGLGpu::sendIndexedInstancedMeshToGpu(const GrPrimitiveProcessor& primProc, 2699 GrPrimitiveType primitiveType, 2700 const GrBuffer* indexBuffer, int indexCount, 2701 int baseIndex, const GrBuffer* vertexBuffer, 2702 int baseVertex, const GrBuffer* instanceBuffer, 2703 int instanceCount, int baseInstance) { 2704 const GrGLenum glPrimType = gr_primitive_type_to_gl_mode(primitiveType); 2705 GrGLvoid* indices = reinterpret_cast<void*>(indexBuffer->baseOffset() + 2706 sizeof(uint16_t) * baseIndex); 2707 this->setupGeometry(primProc, indexBuffer, vertexBuffer, baseVertex, 2708 instanceBuffer, baseInstance); 2709 GL_CALL(DrawElementsInstanced(glPrimType, indexCount, GR_GL_UNSIGNED_SHORT, indices, 2710 instanceCount)); 2711 fStats.incNumDraws(); 2712 } 2713 2714 void GrGLGpu::onResolveRenderTarget(GrRenderTarget* target, GrSurfaceOrigin origin) { 2715 GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(target); 2716 if (rt->needsResolve()) { 2717 // Some extensions automatically resolves the texture when it is read. 2718 if (this->glCaps().usesMSAARenderBuffers()) { 2719 SkASSERT(rt->textureFBOID() != rt->renderFBOID()); 2720 SkASSERT(rt->textureFBOID() != 0 && rt->renderFBOID() != 0); 2721 fStats.incRenderTargetBinds(); 2722 fStats.incRenderTargetBinds(); 2723 GL_CALL(BindFramebuffer(GR_GL_READ_FRAMEBUFFER, rt->renderFBOID())); 2724 GL_CALL(BindFramebuffer(GR_GL_DRAW_FRAMEBUFFER, rt->textureFBOID())); 2725 // make sure we go through flushRenderTarget() since we've modified 2726 // the bound DRAW FBO ID. 2727 fHWBoundRenderTargetUniqueID.makeInvalid(); 2728 const GrGLIRect& vp = rt->getViewport(); 2729 const SkIRect dirtyRect = rt->getResolveRect(); 2730 2731 if (GrGLCaps::kES_Apple_MSFBOType == this->glCaps().msFBOType()) { 2732 // Apple's extension uses the scissor as the blit bounds. 2733 GrScissorState scissorState; 2734 scissorState.set(dirtyRect); 2735 this->flushScissor(scissorState, vp, origin); 2736 this->disableWindowRectangles(); 2737 GL_CALL(ResolveMultisampleFramebuffer()); 2738 } else { 2739 int l, b, r, t; 2740 if (GrGLCaps::kResolveMustBeFull_BlitFrambufferFlag & 2741 this->glCaps().blitFramebufferSupportFlags()) { 2742 l = 0; 2743 b = 0; 2744 r = target->width(); 2745 t = target->height(); 2746 } else { 2747 GrGLIRect rect; 2748 rect.setRelativeTo(vp, dirtyRect, origin); 2749 l = rect.fLeft; 2750 b = rect.fBottom; 2751 r = rect.fLeft + rect.fWidth; 2752 t = rect.fBottom + rect.fHeight; 2753 } 2754 2755 // BlitFrameBuffer respects the scissor, so disable it. 2756 this->disableScissor(); 2757 this->disableWindowRectangles(); 2758 GL_CALL(BlitFramebuffer(l, b, r, t, l, b, r, t, 2759 GR_GL_COLOR_BUFFER_BIT, GR_GL_NEAREST)); 2760 } 2761 } 2762 rt->flagAsResolved(); 2763 } 2764 } 2765 2766 namespace { 2767 2768 2769 GrGLenum gr_to_gl_stencil_op(GrStencilOp op) { 2770 static const GrGLenum gTable[kGrStencilOpCount] = { 2771 GR_GL_KEEP, // kKeep 2772 GR_GL_ZERO, // kZero 2773 GR_GL_REPLACE, // kReplace 2774 GR_GL_INVERT, // kInvert 2775 GR_GL_INCR_WRAP, // kIncWrap 2776 GR_GL_DECR_WRAP, // kDecWrap 2777 GR_GL_INCR, // kIncClamp 2778 GR_GL_DECR, // kDecClamp 2779 }; 2780 GR_STATIC_ASSERT(0 == (int)GrStencilOp::kKeep); 2781 GR_STATIC_ASSERT(1 == (int)GrStencilOp::kZero); 2782 GR_STATIC_ASSERT(2 == (int)GrStencilOp::kReplace); 2783 GR_STATIC_ASSERT(3 == (int)GrStencilOp::kInvert); 2784 GR_STATIC_ASSERT(4 == (int)GrStencilOp::kIncWrap); 2785 GR_STATIC_ASSERT(5 == (int)GrStencilOp::kDecWrap); 2786 GR_STATIC_ASSERT(6 == (int)GrStencilOp::kIncClamp); 2787 GR_STATIC_ASSERT(7 == (int)GrStencilOp::kDecClamp); 2788 SkASSERT(op < (GrStencilOp)kGrStencilOpCount); 2789 return gTable[(int)op]; 2790 } 2791 2792 void set_gl_stencil(const GrGLInterface* gl, 2793 const GrStencilSettings::Face& face, 2794 GrGLenum glFace) { 2795 GrGLenum glFunc = GrToGLStencilFunc(face.fTest); 2796 GrGLenum glFailOp = gr_to_gl_stencil_op(face.fFailOp); 2797 GrGLenum glPassOp = gr_to_gl_stencil_op(face.fPassOp); 2798 2799 GrGLint ref = face.fRef; 2800 GrGLint mask = face.fTestMask; 2801 GrGLint writeMask = face.fWriteMask; 2802 2803 if (GR_GL_FRONT_AND_BACK == glFace) { 2804 // we call the combined func just in case separate stencil is not 2805 // supported. 2806 GR_GL_CALL(gl, StencilFunc(glFunc, ref, mask)); 2807 GR_GL_CALL(gl, StencilMask(writeMask)); 2808 GR_GL_CALL(gl, StencilOp(glFailOp, GR_GL_KEEP, glPassOp)); 2809 } else { 2810 GR_GL_CALL(gl, StencilFuncSeparate(glFace, glFunc, ref, mask)); 2811 GR_GL_CALL(gl, StencilMaskSeparate(glFace, writeMask)); 2812 GR_GL_CALL(gl, StencilOpSeparate(glFace, glFailOp, GR_GL_KEEP, glPassOp)); 2813 } 2814 } 2815 } 2816 2817 void GrGLGpu::flushStencil(const GrStencilSettings& stencilSettings) { 2818 if (stencilSettings.isDisabled()) { 2819 this->disableStencil(); 2820 } else if (fHWStencilSettings != stencilSettings) { 2821 if (kYes_TriState != fHWStencilTestEnabled) { 2822 GL_CALL(Enable(GR_GL_STENCIL_TEST)); 2823 2824 fHWStencilTestEnabled = kYes_TriState; 2825 } 2826 if (stencilSettings.isTwoSided()) { 2827 set_gl_stencil(this->glInterface(), 2828 stencilSettings.front(), 2829 GR_GL_FRONT); 2830 set_gl_stencil(this->glInterface(), 2831 stencilSettings.back(), 2832 GR_GL_BACK); 2833 } else { 2834 set_gl_stencil(this->glInterface(), 2835 stencilSettings.front(), 2836 GR_GL_FRONT_AND_BACK); 2837 } 2838 fHWStencilSettings = stencilSettings; 2839 } 2840 } 2841 2842 void GrGLGpu::disableStencil() { 2843 if (kNo_TriState != fHWStencilTestEnabled) { 2844 GL_CALL(Disable(GR_GL_STENCIL_TEST)); 2845 2846 fHWStencilTestEnabled = kNo_TriState; 2847 fHWStencilSettings.invalidate(); 2848 } 2849 } 2850 2851 void GrGLGpu::flushHWAAState(GrRenderTarget* rt, bool useHWAA, bool stencilEnabled) { 2852 // rt is only optional if useHWAA is false. 2853 SkASSERT(rt || !useHWAA); 2854 SkASSERT(!useHWAA || rt->isStencilBufferMultisampled()); 2855 2856 if (this->caps()->multisampleDisableSupport()) { 2857 if (useHWAA) { 2858 if (kYes_TriState != fMSAAEnabled) { 2859 GL_CALL(Enable(GR_GL_MULTISAMPLE)); 2860 fMSAAEnabled = kYes_TriState; 2861 } 2862 } else { 2863 if (kNo_TriState != fMSAAEnabled) { 2864 GL_CALL(Disable(GR_GL_MULTISAMPLE)); 2865 fMSAAEnabled = kNo_TriState; 2866 } 2867 } 2868 } 2869 2870 if (0 != this->caps()->maxRasterSamples()) { 2871 if (useHWAA && GrFSAAType::kMixedSamples == rt->fsaaType() && !stencilEnabled) { 2872 // Since stencil is disabled and we want more samples than are in the color buffer, we 2873 // need to tell the rasterizer explicitly how many to run. 2874 if (kYes_TriState != fHWRasterMultisampleEnabled) { 2875 GL_CALL(Enable(GR_GL_RASTER_MULTISAMPLE)); 2876 fHWRasterMultisampleEnabled = kYes_TriState; 2877 } 2878 if (rt->numStencilSamples() != fHWNumRasterSamples) { 2879 SkASSERT(rt->numStencilSamples() <= this->caps()->maxRasterSamples()); 2880 GL_CALL(RasterSamples(rt->numStencilSamples(), GR_GL_TRUE)); 2881 fHWNumRasterSamples = rt->numStencilSamples(); 2882 } 2883 } else { 2884 if (kNo_TriState != fHWRasterMultisampleEnabled) { 2885 GL_CALL(Disable(GR_GL_RASTER_MULTISAMPLE)); 2886 fHWRasterMultisampleEnabled = kNo_TriState; 2887 } 2888 } 2889 } else { 2890 SkASSERT(!useHWAA || GrFSAAType::kMixedSamples != rt->fsaaType() || stencilEnabled); 2891 } 2892 } 2893 2894 void GrGLGpu::flushBlend(const GrXferProcessor::BlendInfo& blendInfo, const GrSwizzle& swizzle) { 2895 // Any optimization to disable blending should have already been applied and 2896 // tweaked the equation to "add" or "subtract", and the coeffs to (1, 0). 2897 2898 GrBlendEquation equation = blendInfo.fEquation; 2899 GrBlendCoeff srcCoeff = blendInfo.fSrcBlend; 2900 GrBlendCoeff dstCoeff = blendInfo.fDstBlend; 2901 bool blendOff = (kAdd_GrBlendEquation == equation || kSubtract_GrBlendEquation == equation) && 2902 kOne_GrBlendCoeff == srcCoeff && kZero_GrBlendCoeff == dstCoeff; 2903 if (blendOff) { 2904 if (kNo_TriState != fHWBlendState.fEnabled) { 2905 GL_CALL(Disable(GR_GL_BLEND)); 2906 2907 // Workaround for the ARM KHR_blend_equation_advanced blacklist issue 2908 // https://code.google.com/p/skia/issues/detail?id=3943 2909 if (kARM_GrGLVendor == this->ctxInfo().vendor() && 2910 GrBlendEquationIsAdvanced(fHWBlendState.fEquation)) { 2911 SkASSERT(this->caps()->advancedBlendEquationSupport()); 2912 // Set to any basic blending equation. 2913 GrBlendEquation blend_equation = kAdd_GrBlendEquation; 2914 GL_CALL(BlendEquation(gXfermodeEquation2Blend[blend_equation])); 2915 fHWBlendState.fEquation = blend_equation; 2916 } 2917 2918 fHWBlendState.fEnabled = kNo_TriState; 2919 } 2920 return; 2921 } 2922 2923 if (kYes_TriState != fHWBlendState.fEnabled) { 2924 GL_CALL(Enable(GR_GL_BLEND)); 2925 2926 fHWBlendState.fEnabled = kYes_TriState; 2927 } 2928 2929 if (fHWBlendState.fEquation != equation) { 2930 GL_CALL(BlendEquation(gXfermodeEquation2Blend[equation])); 2931 fHWBlendState.fEquation = equation; 2932 } 2933 2934 if (GrBlendEquationIsAdvanced(equation)) { 2935 SkASSERT(this->caps()->advancedBlendEquationSupport()); 2936 // Advanced equations have no other blend state. 2937 return; 2938 } 2939 2940 if (fHWBlendState.fSrcCoeff != srcCoeff || fHWBlendState.fDstCoeff != dstCoeff) { 2941 GL_CALL(BlendFunc(gXfermodeCoeff2Blend[srcCoeff], 2942 gXfermodeCoeff2Blend[dstCoeff])); 2943 fHWBlendState.fSrcCoeff = srcCoeff; 2944 fHWBlendState.fDstCoeff = dstCoeff; 2945 } 2946 2947 if ((BlendCoeffReferencesConstant(srcCoeff) || BlendCoeffReferencesConstant(dstCoeff))) { 2948 GrColor blendConst = blendInfo.fBlendConstant; 2949 blendConst = swizzle.applyTo(blendConst); 2950 if (!fHWBlendState.fConstColorValid || fHWBlendState.fConstColor != blendConst) { 2951 GrGLfloat c[4]; 2952 GrColorToRGBAFloat(blendConst, c); 2953 GL_CALL(BlendColor(c[0], c[1], c[2], c[3])); 2954 fHWBlendState.fConstColor = blendConst; 2955 fHWBlendState.fConstColorValid = true; 2956 } 2957 } 2958 } 2959 2960 static inline GrGLenum wrap_mode_to_gl_wrap(GrSamplerState::WrapMode wrapMode) { 2961 switch (wrapMode) { 2962 case GrSamplerState::WrapMode::kClamp: 2963 return GR_GL_CLAMP_TO_EDGE; 2964 case GrSamplerState::WrapMode::kRepeat: 2965 return GR_GL_REPEAT; 2966 case GrSamplerState::WrapMode::kMirrorRepeat: 2967 return GR_GL_MIRRORED_REPEAT; 2968 }; 2969 SK_ABORT("Unknown wrap mode"); 2970 return 0; 2971 } 2972 2973 static GrGLenum get_component_enum_from_char(char component) { 2974 switch (component) { 2975 case 'r': 2976 return GR_GL_RED; 2977 case 'g': 2978 return GR_GL_GREEN; 2979 case 'b': 2980 return GR_GL_BLUE; 2981 case 'a': 2982 return GR_GL_ALPHA; 2983 default: 2984 SK_ABORT("Unsupported component"); 2985 return 0; 2986 } 2987 } 2988 2989 /** If texture swizzling is available using tex parameters then it is preferred over mangling 2990 the generated shader code. This potentially allows greater reuse of cached shaders. */ 2991 static void get_tex_param_swizzle(GrPixelConfig config, 2992 const GrGLCaps& caps, 2993 GrGLenum* glSwizzle) { 2994 const GrSwizzle& swizzle = caps.configSwizzle(config); 2995 for (int i = 0; i < 4; ++i) { 2996 glSwizzle[i] = get_component_enum_from_char(swizzle.c_str()[i]); 2997 } 2998 } 2999 3000 static GrGLenum filter_to_gl_mag_filter(GrSamplerState::Filter filter) { 3001 switch (filter) { 3002 case GrSamplerState::Filter::kNearest: 3003 return GR_GL_NEAREST; 3004 case GrSamplerState::Filter::kBilerp: 3005 return GR_GL_LINEAR; 3006 case GrSamplerState::Filter::kMipMap: 3007 return GR_GL_LINEAR; 3008 } 3009 SK_ABORT("Unknown filter"); 3010 return 0; 3011 } 3012 3013 static GrGLenum filter_to_gl_min_filter(GrSamplerState::Filter filter) { 3014 switch (filter) { 3015 case GrSamplerState::Filter::kNearest: 3016 return GR_GL_NEAREST; 3017 case GrSamplerState::Filter::kBilerp: 3018 return GR_GL_LINEAR; 3019 case GrSamplerState::Filter::kMipMap: 3020 return GR_GL_LINEAR_MIPMAP_LINEAR; 3021 } 3022 SK_ABORT("Unknown filter"); 3023 return 0; 3024 } 3025 3026 void GrGLGpu::bindTexture(int unitIdx, const GrSamplerState& samplerState, bool allowSRGBInputs, 3027 GrGLTexture* texture, GrSurfaceOrigin textureOrigin) { 3028 SkASSERT(texture); 3029 3030 #ifdef SK_DEBUG 3031 if (!this->caps()->npotTextureTileSupport()) { 3032 if (samplerState.isRepeated()) { 3033 const int w = texture->width(); 3034 const int h = texture->height(); 3035 SkASSERT(SkIsPow2(w) && SkIsPow2(h)); 3036 } 3037 } 3038 #endif 3039 3040 // If we created a rt/tex and rendered to it without using a texture and now we're texturing 3041 // from the rt it will still be the last bound texture, but it needs resolving. So keep this 3042 // out of the "last != next" check. 3043 GrGLRenderTarget* texRT = static_cast<GrGLRenderTarget*>(texture->asRenderTarget()); 3044 if (texRT) { 3045 this->onResolveRenderTarget(texRT, textureOrigin); 3046 } 3047 3048 GrGpuResource::UniqueID textureID = texture->uniqueID(); 3049 GrGLenum target = texture->target(); 3050 if (fHWBoundTextureUniqueIDs[unitIdx] != textureID) { 3051 this->setTextureUnit(unitIdx); 3052 GL_CALL(BindTexture(target, texture->textureID())); 3053 fHWBoundTextureUniqueIDs[unitIdx] = textureID; 3054 } 3055 3056 ResetTimestamp timestamp; 3057 const GrGLTexture::TexParams& oldTexParams = texture->getCachedTexParams(×tamp); 3058 bool setAll = timestamp < this->getResetTimestamp(); 3059 GrGLTexture::TexParams newTexParams; 3060 3061 GrSamplerState::Filter filterMode = samplerState.filter(); 3062 3063 if (GrSamplerState::Filter::kMipMap == filterMode) { 3064 if (!this->caps()->mipMapSupport()) { 3065 filterMode = GrSamplerState::Filter::kBilerp; 3066 } 3067 } 3068 3069 newTexParams.fMinFilter = filter_to_gl_min_filter(filterMode); 3070 newTexParams.fMagFilter = filter_to_gl_mag_filter(filterMode); 3071 3072 if (this->glCaps().srgbDecodeDisableSupport() && GrPixelConfigIsSRGB(texture->config())) { 3073 newTexParams.fSRGBDecode = allowSRGBInputs ? GR_GL_DECODE_EXT : GR_GL_SKIP_DECODE_EXT; 3074 if (setAll || newTexParams.fSRGBDecode != oldTexParams.fSRGBDecode) { 3075 this->setTextureUnit(unitIdx); 3076 GL_CALL(TexParameteri(target, GR_GL_TEXTURE_SRGB_DECODE_EXT, newTexParams.fSRGBDecode)); 3077 } 3078 } 3079 3080 #ifdef SK_DEBUG 3081 // We were supposed to ensure MipMaps were up-to-date and built correctly before getting here. 3082 if (GrSamplerState::Filter::kMipMap == filterMode) { 3083 SkASSERT(!texture->texturePriv().mipMapsAreDirty()); 3084 if (GrPixelConfigIsSRGB(texture->config())) { 3085 SkDestinationSurfaceColorMode colorMode = allowSRGBInputs 3086 ? SkDestinationSurfaceColorMode::kGammaAndColorSpaceAware 3087 : SkDestinationSurfaceColorMode::kLegacy; 3088 SkASSERT(texture->texturePriv().mipColorMode() == colorMode); 3089 } 3090 } 3091 #endif 3092 3093 newTexParams.fMaxMipMapLevel = texture->texturePriv().maxMipMapLevel(); 3094 3095 newTexParams.fWrapS = wrap_mode_to_gl_wrap(samplerState.wrapModeX()); 3096 newTexParams.fWrapT = wrap_mode_to_gl_wrap(samplerState.wrapModeY()); 3097 get_tex_param_swizzle(texture->config(), this->glCaps(), newTexParams.fSwizzleRGBA); 3098 if (setAll || newTexParams.fMagFilter != oldTexParams.fMagFilter) { 3099 this->setTextureUnit(unitIdx); 3100 GL_CALL(TexParameteri(target, GR_GL_TEXTURE_MAG_FILTER, newTexParams.fMagFilter)); 3101 } 3102 if (setAll || newTexParams.fMinFilter != oldTexParams.fMinFilter) { 3103 this->setTextureUnit(unitIdx); 3104 GL_CALL(TexParameteri(target, GR_GL_TEXTURE_MIN_FILTER, newTexParams.fMinFilter)); 3105 } 3106 if (setAll || newTexParams.fMaxMipMapLevel != oldTexParams.fMaxMipMapLevel) { 3107 // These are not supported in ES2 contexts 3108 if (this->glCaps().mipMapLevelAndLodControlSupport()) { 3109 if (newTexParams.fMaxMipMapLevel != 0) { 3110 this->setTextureUnit(unitIdx); 3111 GL_CALL(TexParameteri(target, GR_GL_TEXTURE_MIN_LOD, 0)); 3112 GL_CALL(TexParameteri(target, GR_GL_TEXTURE_BASE_LEVEL, 0)); 3113 GL_CALL(TexParameteri(target, GR_GL_TEXTURE_MAX_LOD, 3114 newTexParams.fMaxMipMapLevel)); 3115 GL_CALL(TexParameteri(target, GR_GL_TEXTURE_MAX_LEVEL, 3116 newTexParams.fMaxMipMapLevel)); 3117 } 3118 } 3119 } 3120 if (setAll || newTexParams.fWrapS != oldTexParams.fWrapS) { 3121 this->setTextureUnit(unitIdx); 3122 GL_CALL(TexParameteri(target, GR_GL_TEXTURE_WRAP_S, newTexParams.fWrapS)); 3123 } 3124 if (setAll || newTexParams.fWrapT != oldTexParams.fWrapT) { 3125 this->setTextureUnit(unitIdx); 3126 GL_CALL(TexParameteri(target, GR_GL_TEXTURE_WRAP_T, newTexParams.fWrapT)); 3127 } 3128 if (this->glCaps().textureSwizzleSupport() && 3129 (setAll || memcmp(newTexParams.fSwizzleRGBA, 3130 oldTexParams.fSwizzleRGBA, 3131 sizeof(newTexParams.fSwizzleRGBA)))) { 3132 this->setTextureSwizzle(unitIdx, target, newTexParams.fSwizzleRGBA); 3133 } 3134 texture->setCachedTexParams(newTexParams, this->getResetTimestamp()); 3135 } 3136 3137 void GrGLGpu::bindTexelBuffer(int unitIdx, GrPixelConfig texelConfig, GrGLBuffer* buffer) { 3138 SkASSERT(this->glCaps().canUseConfigWithTexelBuffer(texelConfig)); 3139 SkASSERT(unitIdx >= 0 && unitIdx < fHWBufferTextures.count()); 3140 3141 BufferTexture& buffTex = fHWBufferTextures[unitIdx]; 3142 3143 if (!buffTex.fKnownBound) { 3144 if (!buffTex.fTextureID) { 3145 GL_CALL(GenTextures(1, &buffTex.fTextureID)); 3146 if (!buffTex.fTextureID) { 3147 return; 3148 } 3149 } 3150 3151 this->setTextureUnit(unitIdx); 3152 GL_CALL(BindTexture(GR_GL_TEXTURE_BUFFER, buffTex.fTextureID)); 3153 3154 buffTex.fKnownBound = true; 3155 } 3156 3157 if (buffer->uniqueID() != buffTex.fAttachedBufferUniqueID || 3158 buffTex.fTexelConfig != texelConfig) { 3159 3160 this->setTextureUnit(unitIdx); 3161 GL_CALL(TexBuffer(GR_GL_TEXTURE_BUFFER, 3162 this->glCaps().configSizedInternalFormat(texelConfig), 3163 buffer->bufferID())); 3164 3165 buffTex.fTexelConfig = texelConfig; 3166 buffTex.fAttachedBufferUniqueID = buffer->uniqueID(); 3167 3168 if (this->glCaps().textureSwizzleSupport() && 3169 this->glCaps().configSwizzle(texelConfig) != buffTex.fSwizzle) { 3170 GrGLenum glSwizzle[4]; 3171 get_tex_param_swizzle(texelConfig, this->glCaps(), glSwizzle); 3172 this->setTextureSwizzle(unitIdx, GR_GL_TEXTURE_BUFFER, glSwizzle); 3173 buffTex.fSwizzle = this->glCaps().configSwizzle(texelConfig); 3174 } 3175 3176 buffer->setHasAttachedToTexture(); 3177 fHWMaxUsedBufferTextureUnit = SkTMax(unitIdx, fHWMaxUsedBufferTextureUnit); 3178 } 3179 } 3180 3181 void GrGLGpu::generateMipmaps(const GrSamplerState& params, bool allowSRGBInputs, 3182 GrGLTexture* texture, GrSurfaceOrigin textureOrigin) { 3183 SkASSERT(texture); 3184 3185 // First, figure out if we need mips for this texture at all: 3186 GrSamplerState::Filter filterMode = params.filter(); 3187 3188 if (GrSamplerState::Filter::kMipMap == filterMode) { 3189 if (!this->caps()->mipMapSupport()) { 3190 filterMode = GrSamplerState::Filter::kBilerp; 3191 } 3192 } 3193 3194 if (GrSamplerState::Filter::kMipMap != filterMode) { 3195 return; 3196 } 3197 3198 // If this is an sRGB texture and the mips were previously built the "other" way 3199 // (gamma-correct vs. not), then we need to rebuild them. We don't need to check for 3200 // srgbSupport - we'll *never* get an sRGB pixel config if we don't support it. 3201 SkDestinationSurfaceColorMode colorMode = allowSRGBInputs 3202 ? SkDestinationSurfaceColorMode::kGammaAndColorSpaceAware 3203 : SkDestinationSurfaceColorMode::kLegacy; 3204 if (GrPixelConfigIsSRGB(texture->config()) && 3205 colorMode != texture->texturePriv().mipColorMode()) { 3206 texture->texturePriv().markMipMapsDirty(); 3207 } 3208 3209 // If the mips aren't dirty, we're done: 3210 if (!texture->texturePriv().mipMapsAreDirty()) { 3211 return; 3212 } 3213 3214 // If we created a rt/tex and rendered to it without using a texture and now we're texturing 3215 // from the rt it will still be the last bound texture, but it needs resolving. 3216 GrGLRenderTarget* texRT = static_cast<GrGLRenderTarget*>(texture->asRenderTarget()); 3217 if (texRT) { 3218 this->onResolveRenderTarget(texRT, textureOrigin); 3219 } 3220 3221 GrGLenum target = texture->target(); 3222 this->setScratchTextureUnit(); 3223 GL_CALL(BindTexture(target, texture->textureID())); 3224 3225 // Configure sRGB decode, if necessary. This state is the only thing needed for the driver 3226 // call (glGenerateMipmap) to work correctly. Our manual method dirties other state, too. 3227 if (this->glCaps().srgbDecodeDisableSupport() && GrPixelConfigIsSRGB(texture->config())) { 3228 GrGLenum srgbDecode = allowSRGBInputs ? GR_GL_DECODE_EXT : GR_GL_SKIP_DECODE_EXT; 3229 // Command buffer's sRGB decode extension doesn't influence mipmap generation correctly. 3230 // If we set this to skip_decode, it appears to suppress sRGB -> Linear for each downsample, 3231 // but not the Linear -> sRGB when writing the next level. The result is that mip-chains 3232 // get progressively brighter as you go down. Forcing this to 'decode' gives predictable 3233 // (and only slightly incorrect) results. See crbug.com/655247 (~comment 28) 3234 if (!this->glCaps().srgbDecodeDisableAffectsMipmaps()) { 3235 srgbDecode = GR_GL_DECODE_EXT; 3236 } 3237 GL_CALL(TexParameteri(target, GR_GL_TEXTURE_SRGB_DECODE_EXT, srgbDecode)); 3238 } 3239 3240 // Either do manual mipmap generation or (if that fails), just rely on the driver: 3241 if (!this->generateMipmap(texture, textureOrigin, allowSRGBInputs)) { 3242 GL_CALL(GenerateMipmap(target)); 3243 } 3244 3245 texture->texturePriv().markMipMapsClean(); 3246 texture->texturePriv().setMaxMipMapLevel(SkMipMap::ComputeLevelCount( 3247 texture->width(), texture->height())); 3248 texture->texturePriv().setMipColorMode(colorMode); 3249 3250 // We have potentially set lots of state on the texture. Easiest to dirty it all: 3251 texture->textureParamsModified(); 3252 } 3253 3254 void GrGLGpu::setTextureSwizzle(int unitIdx, GrGLenum target, const GrGLenum swizzle[]) { 3255 this->setTextureUnit(unitIdx); 3256 if (this->glStandard() == kGLES_GrGLStandard) { 3257 // ES3 added swizzle support but not GL_TEXTURE_SWIZZLE_RGBA. 3258 GL_CALL(TexParameteri(target, GR_GL_TEXTURE_SWIZZLE_R, swizzle[0])); 3259 GL_CALL(TexParameteri(target, GR_GL_TEXTURE_SWIZZLE_G, swizzle[1])); 3260 GL_CALL(TexParameteri(target, GR_GL_TEXTURE_SWIZZLE_B, swizzle[2])); 3261 GL_CALL(TexParameteri(target, GR_GL_TEXTURE_SWIZZLE_A, swizzle[3])); 3262 } else { 3263 GR_STATIC_ASSERT(sizeof(swizzle[0]) == sizeof(GrGLint)); 3264 GL_CALL(TexParameteriv(target, GR_GL_TEXTURE_SWIZZLE_RGBA, 3265 reinterpret_cast<const GrGLint*>(swizzle))); 3266 } 3267 } 3268 3269 void GrGLGpu::flushColorWrite(bool writeColor) { 3270 if (!writeColor) { 3271 if (kNo_TriState != fHWWriteToColor) { 3272 GL_CALL(ColorMask(GR_GL_FALSE, GR_GL_FALSE, 3273 GR_GL_FALSE, GR_GL_FALSE)); 3274 fHWWriteToColor = kNo_TriState; 3275 } 3276 } else { 3277 if (kYes_TriState != fHWWriteToColor) { 3278 GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE)); 3279 fHWWriteToColor = kYes_TriState; 3280 } 3281 } 3282 } 3283 3284 void GrGLGpu::setTextureUnit(int unit) { 3285 SkASSERT(unit >= 0 && unit < fHWBoundTextureUniqueIDs.count()); 3286 if (unit != fHWActiveTextureUnitIdx) { 3287 GL_CALL(ActiveTexture(GR_GL_TEXTURE0 + unit)); 3288 fHWActiveTextureUnitIdx = unit; 3289 } 3290 } 3291 3292 void GrGLGpu::setScratchTextureUnit() { 3293 // Bind the last texture unit since it is the least likely to be used by GrGLProgram. 3294 int lastUnitIdx = fHWBoundTextureUniqueIDs.count() - 1; 3295 if (lastUnitIdx != fHWActiveTextureUnitIdx) { 3296 GL_CALL(ActiveTexture(GR_GL_TEXTURE0 + lastUnitIdx)); 3297 fHWActiveTextureUnitIdx = lastUnitIdx; 3298 } 3299 // clear out the this field so that if a program does use this unit it will rebind the correct 3300 // texture. 3301 fHWBoundTextureUniqueIDs[lastUnitIdx].makeInvalid(); 3302 } 3303 3304 // Determines whether glBlitFramebuffer could be used between src and dst by onCopySurface. 3305 static inline bool can_blit_framebuffer_for_copy_surface( 3306 const GrSurface* dst, GrSurfaceOrigin dstOrigin, 3307 const GrSurface* src, GrSurfaceOrigin srcOrigin, 3308 const SkIRect& srcRect, 3309 const SkIPoint& dstPoint, 3310 const GrGLGpu* gpu) { 3311 auto blitFramebufferFlags = gpu->glCaps().blitFramebufferSupportFlags(); 3312 if (!gpu->glCaps().canConfigBeFBOColorAttachment(dst->config()) || 3313 !gpu->glCaps().canConfigBeFBOColorAttachment(src->config())) { 3314 return false; 3315 } 3316 // Blits are not allowed between int color buffers and float/fixed color buffers. GrGpu should 3317 // have filtered such cases out. 3318 SkASSERT(GrPixelConfigIsSint(dst->config()) == GrPixelConfigIsSint(src->config())); 3319 const GrGLTexture* dstTex = static_cast<const GrGLTexture*>(dst->asTexture()); 3320 const GrGLTexture* srcTex = static_cast<const GrGLTexture*>(src->asTexture()); 3321 const GrRenderTarget* dstRT = dst->asRenderTarget(); 3322 const GrRenderTarget* srcRT = src->asRenderTarget(); 3323 if (dstTex && dstTex->target() != GR_GL_TEXTURE_2D) { 3324 return false; 3325 } 3326 if (srcTex && srcTex->target() != GR_GL_TEXTURE_2D) { 3327 return false; 3328 } 3329 if (GrGLCaps::kNoSupport_BlitFramebufferFlag & blitFramebufferFlags) { 3330 return false; 3331 } 3332 if (GrGLCaps::kNoScalingOrMirroring_BlitFramebufferFlag & blitFramebufferFlags) { 3333 // We would mirror to compensate for origin changes. Note that copySurface is 3334 // specified such that the src and dst rects are the same. 3335 if (dstOrigin != srcOrigin) { 3336 return false; 3337 } 3338 } 3339 if (GrGLCaps::kResolveMustBeFull_BlitFrambufferFlag & blitFramebufferFlags) { 3340 if (srcRT && srcRT->numColorSamples() > 1) { 3341 if (dstRT && 1 == dstRT->numColorSamples()) { 3342 return false; 3343 } 3344 if (SkRect::Make(srcRect) != srcRT->getBoundsRect()) { 3345 return false; 3346 } 3347 } 3348 } 3349 if (GrGLCaps::kNoMSAADst_BlitFramebufferFlag & blitFramebufferFlags) { 3350 if (dstRT && dstRT->numColorSamples() > 1) { 3351 return false; 3352 } 3353 } 3354 if (GrGLCaps::kNoFormatConversion_BlitFramebufferFlag & blitFramebufferFlags) { 3355 if (dst->config() != src->config()) { 3356 return false; 3357 } 3358 } else if (GrGLCaps::kNoFormatConversionForMSAASrc_BlitFramebufferFlag & blitFramebufferFlags) { 3359 const GrRenderTarget* srcRT = src->asRenderTarget(); 3360 if (srcRT && srcRT->numColorSamples() > 1 && dst->config() != src->config()) { 3361 return false; 3362 } 3363 } 3364 if (GrGLCaps::kRectsMustMatchForMSAASrc_BlitFramebufferFlag & blitFramebufferFlags) { 3365 if (srcRT && srcRT->numColorSamples() > 1) { 3366 if (dstPoint.fX != srcRect.fLeft || dstPoint.fY != srcRect.fTop) { 3367 return false; 3368 } 3369 if (dstOrigin != srcOrigin) { 3370 return false; 3371 } 3372 } 3373 } 3374 return true; 3375 } 3376 3377 static bool rt_has_msaa_render_buffer(const GrGLRenderTarget* rt, const GrGLCaps& glCaps) { 3378 // A RT has a separate MSAA renderbuffer if: 3379 // 1) It's multisampled 3380 // 2) We're using an extension with separate MSAA renderbuffers 3381 // 3) It's not FBO 0, which is special and always auto-resolves 3382 return rt->numColorSamples() > 1 && glCaps.usesMSAARenderBuffers() && rt->renderFBOID() != 0; 3383 } 3384 3385 static inline bool can_copy_texsubimage(const GrSurface* dst, GrSurfaceOrigin dstOrigin, 3386 const GrSurface* src, GrSurfaceOrigin srcOrigin, 3387 const GrGLGpu* gpu) { 3388 // Table 3.9 of the ES2 spec indicates the supported formats with CopyTexSubImage 3389 // and BGRA isn't in the spec. There doesn't appear to be any extension that adds it. Perhaps 3390 // many drivers would allow it to work, but ANGLE does not. 3391 if (kGLES_GrGLStandard == gpu->glStandard() && gpu->glCaps().bgraIsInternalFormat() && 3392 (kBGRA_8888_GrPixelConfig == dst->config() || kBGRA_8888_GrPixelConfig == src->config())) { 3393 return false; 3394 } 3395 const GrGLRenderTarget* dstRT = static_cast<const GrGLRenderTarget*>(dst->asRenderTarget()); 3396 // If dst is multisampled (and uses an extension where there is a separate MSAA renderbuffer) 3397 // then we don't want to copy to the texture but to the MSAA buffer. 3398 if (dstRT && rt_has_msaa_render_buffer(dstRT, gpu->glCaps())) { 3399 return false; 3400 } 3401 const GrGLRenderTarget* srcRT = static_cast<const GrGLRenderTarget*>(src->asRenderTarget()); 3402 // If the src is multisampled (and uses an extension where there is a separate MSAA 3403 // renderbuffer) then it is an invalid operation to call CopyTexSubImage 3404 if (srcRT && rt_has_msaa_render_buffer(srcRT, gpu->glCaps())) { 3405 return false; 3406 } 3407 3408 const GrGLTexture* dstTex = static_cast<const GrGLTexture*>(dst->asTexture()); 3409 // CopyTex(Sub)Image writes to a texture and we have no way of dynamically wrapping a RT in a 3410 // texture. 3411 if (!dstTex) { 3412 return false; 3413 } 3414 3415 const GrGLTexture* srcTex = static_cast<const GrGLTexture*>(src->asTexture()); 3416 3417 // Check that we could wrap the source in an FBO, that the dst is TEXTURE_2D, that no mirroring 3418 // is required. 3419 if (gpu->glCaps().canConfigBeFBOColorAttachment(src->config()) && 3420 (!srcTex || srcTex->target() == GR_GL_TEXTURE_2D) && dstTex->target() == GR_GL_TEXTURE_2D && 3421 dstOrigin == srcOrigin) { 3422 return true; 3423 } else { 3424 return false; 3425 } 3426 } 3427 3428 // If a temporary FBO was created, its non-zero ID is returned. The viewport that the copy rect is 3429 // relative to is output. 3430 void GrGLGpu::bindSurfaceFBOForPixelOps(GrSurface* surface, GrGLenum fboTarget, GrGLIRect* viewport, 3431 TempFBOTarget tempFBOTarget) { 3432 GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(surface->asRenderTarget()); 3433 if (!rt) { 3434 SkASSERT(surface->asTexture()); 3435 GrGLTexture* texture = static_cast<GrGLTexture*>(surface->asTexture()); 3436 GrGLuint texID = texture->textureID(); 3437 GrGLenum target = texture->target(); 3438 GrGLuint* tempFBOID; 3439 tempFBOID = kSrc_TempFBOTarget == tempFBOTarget ? &fTempSrcFBOID : &fTempDstFBOID; 3440 3441 if (0 == *tempFBOID) { 3442 GR_GL_CALL(this->glInterface(), GenFramebuffers(1, tempFBOID)); 3443 } 3444 3445 fStats.incRenderTargetBinds(); 3446 GR_GL_CALL(this->glInterface(), BindFramebuffer(fboTarget, *tempFBOID)); 3447 GR_GL_CALL(this->glInterface(), FramebufferTexture2D(fboTarget, 3448 GR_GL_COLOR_ATTACHMENT0, 3449 target, 3450 texID, 3451 0)); 3452 texture->baseLevelWasBoundToFBO(); 3453 viewport->fLeft = 0; 3454 viewport->fBottom = 0; 3455 viewport->fWidth = surface->width(); 3456 viewport->fHeight = surface->height(); 3457 } else { 3458 fStats.incRenderTargetBinds(); 3459 GR_GL_CALL(this->glInterface(), BindFramebuffer(fboTarget, rt->renderFBOID())); 3460 *viewport = rt->getViewport(); 3461 } 3462 } 3463 3464 void GrGLGpu::unbindTextureFBOForPixelOps(GrGLenum fboTarget, GrSurface* surface) { 3465 // bindSurfaceFBOForPixelOps temporarily binds textures that are not render targets to 3466 if (!surface->asRenderTarget()) { 3467 SkASSERT(surface->asTexture()); 3468 GrGLenum textureTarget = static_cast<GrGLTexture*>(surface->asTexture())->target(); 3469 GR_GL_CALL(this->glInterface(), FramebufferTexture2D(fboTarget, 3470 GR_GL_COLOR_ATTACHMENT0, 3471 textureTarget, 3472 0, 3473 0)); 3474 } 3475 } 3476 3477 bool GrGLGpu::onCopySurface(GrSurface* dst, GrSurfaceOrigin dstOrigin, 3478 GrSurface* src, GrSurfaceOrigin srcOrigin, 3479 const SkIRect& srcRect, const SkIPoint& dstPoint, 3480 bool canDiscardOutsideDstRect) { 3481 // None of our copy methods can handle a swizzle. TODO: Make copySurfaceAsDraw handle the 3482 // swizzle. 3483 if (this->caps()->shaderCaps()->configOutputSwizzle(src->config()) != 3484 this->caps()->shaderCaps()->configOutputSwizzle(dst->config())) { 3485 return false; 3486 } 3487 // Don't prefer copying as a draw if the dst doesn't already have a FBO object. 3488 bool preferCopy = SkToBool(dst->asRenderTarget()); 3489 if (preferCopy && src->asTexture()) { 3490 if (this->copySurfaceAsDraw(dst, dstOrigin, src, srcOrigin, srcRect, dstPoint)) { 3491 return true; 3492 } 3493 } 3494 3495 if (can_copy_texsubimage(dst, dstOrigin, src, srcOrigin, this)) { 3496 this->copySurfaceAsCopyTexSubImage(dst, dstOrigin, src, srcOrigin, srcRect, dstPoint); 3497 return true; 3498 } 3499 3500 if (can_blit_framebuffer_for_copy_surface(dst, dstOrigin, src, srcOrigin, 3501 srcRect, dstPoint, this)) { 3502 return this->copySurfaceAsBlitFramebuffer(dst, dstOrigin, src, srcOrigin, 3503 srcRect, dstPoint); 3504 } 3505 3506 if (!preferCopy && src->asTexture()) { 3507 if (this->copySurfaceAsDraw(dst, dstOrigin, src, srcOrigin, srcRect, dstPoint)) { 3508 return true; 3509 } 3510 } 3511 3512 return false; 3513 } 3514 3515 bool GrGLGpu::createCopyProgram(GrTexture* srcTex) { 3516 TRACE_EVENT0("skia", TRACE_FUNC); 3517 3518 int progIdx = TextureToCopyProgramIdx(srcTex); 3519 const GrShaderCaps* shaderCaps = this->caps()->shaderCaps(); 3520 GrSLType samplerType = srcTex->texturePriv().samplerType(); 3521 3522 if (!fCopyProgramArrayBuffer) { 3523 static const GrGLfloat vdata[] = { 3524 0, 0, 3525 0, 1, 3526 1, 0, 3527 1, 1 3528 }; 3529 fCopyProgramArrayBuffer.reset(GrGLBuffer::Create(this, sizeof(vdata), kVertex_GrBufferType, 3530 kStatic_GrAccessPattern, vdata)); 3531 } 3532 if (!fCopyProgramArrayBuffer) { 3533 return false; 3534 } 3535 3536 SkASSERT(!fCopyPrograms[progIdx].fProgram); 3537 GL_CALL_RET(fCopyPrograms[progIdx].fProgram, CreateProgram()); 3538 if (!fCopyPrograms[progIdx].fProgram) { 3539 return false; 3540 } 3541 3542 const char* version = shaderCaps->versionDeclString(); 3543 GrShaderVar aVertex("a_vertex", kHalf2_GrSLType, GrShaderVar::kIn_TypeModifier); 3544 GrShaderVar uTexCoordXform("u_texCoordXform", kHalf4_GrSLType, 3545 GrShaderVar::kUniform_TypeModifier); 3546 GrShaderVar uPosXform("u_posXform", kHalf4_GrSLType, GrShaderVar::kUniform_TypeModifier); 3547 GrShaderVar uTexture("u_texture", samplerType, GrShaderVar::kUniform_TypeModifier); 3548 GrShaderVar vTexCoord("v_texCoord", kHalf2_GrSLType, GrShaderVar::kOut_TypeModifier); 3549 GrShaderVar oFragColor("o_FragColor", kHalf4_GrSLType, GrShaderVar::kOut_TypeModifier); 3550 3551 SkString vshaderTxt(version); 3552 if (shaderCaps->noperspectiveInterpolationSupport()) { 3553 if (const char* extension = shaderCaps->noperspectiveInterpolationExtensionString()) { 3554 vshaderTxt.appendf("#extension %s : require\n", extension); 3555 } 3556 vTexCoord.addModifier("noperspective"); 3557 } 3558 3559 aVertex.appendDecl(shaderCaps, &vshaderTxt); 3560 vshaderTxt.append(";"); 3561 uTexCoordXform.appendDecl(shaderCaps, &vshaderTxt); 3562 vshaderTxt.append(";"); 3563 uPosXform.appendDecl(shaderCaps, &vshaderTxt); 3564 vshaderTxt.append(";"); 3565 vTexCoord.appendDecl(shaderCaps, &vshaderTxt); 3566 vshaderTxt.append(";"); 3567 3568 vshaderTxt.append( 3569 "// Copy Program VS\n" 3570 "void main() {" 3571 " v_texCoord = a_vertex.xy * u_texCoordXform.xy + u_texCoordXform.zw;" 3572 " sk_Position.xy = a_vertex * u_posXform.xy + u_posXform.zw;" 3573 " sk_Position.zw = half2(0, 1);" 3574 "}" 3575 ); 3576 3577 SkString fshaderTxt(version); 3578 if (shaderCaps->noperspectiveInterpolationSupport()) { 3579 if (const char* extension = shaderCaps->noperspectiveInterpolationExtensionString()) { 3580 fshaderTxt.appendf("#extension %s : require\n", extension); 3581 } 3582 } 3583 if (samplerType == kTextureExternalSampler_GrSLType) { 3584 fshaderTxt.appendf("#extension %s : require\n", 3585 shaderCaps->externalTextureExtensionString()); 3586 } 3587 vTexCoord.setTypeModifier(GrShaderVar::kIn_TypeModifier); 3588 vTexCoord.appendDecl(shaderCaps, &fshaderTxt); 3589 fshaderTxt.append(";"); 3590 uTexture.appendDecl(shaderCaps, &fshaderTxt); 3591 fshaderTxt.append(";"); 3592 fshaderTxt.appendf( 3593 "// Copy Program FS\n" 3594 "void main() {" 3595 " sk_FragColor = texture(u_texture, v_texCoord);" 3596 "}" 3597 ); 3598 3599 const char* str; 3600 GrGLint length; 3601 3602 str = vshaderTxt.c_str(); 3603 length = SkToInt(vshaderTxt.size()); 3604 SkSL::Program::Settings settings; 3605 settings.fCaps = shaderCaps; 3606 SkSL::String glsl; 3607 std::unique_ptr<SkSL::Program> program = GrSkSLtoGLSL(*fGLContext, GR_GL_VERTEX_SHADER, 3608 &str, &length, 1, settings, &glsl); 3609 GrGLuint vshader = GrGLCompileAndAttachShader(*fGLContext, fCopyPrograms[progIdx].fProgram, 3610 GR_GL_VERTEX_SHADER, glsl.c_str(), glsl.size(), 3611 &fStats, settings); 3612 SkASSERT(program->fInputs.isEmpty()); 3613 3614 str = fshaderTxt.c_str(); 3615 length = SkToInt(fshaderTxt.size()); 3616 program = GrSkSLtoGLSL(*fGLContext, GR_GL_FRAGMENT_SHADER, &str, &length, 1, settings, &glsl); 3617 GrGLuint fshader = GrGLCompileAndAttachShader(*fGLContext, fCopyPrograms[progIdx].fProgram, 3618 GR_GL_FRAGMENT_SHADER, glsl.c_str(), glsl.size(), 3619 &fStats, settings); 3620 SkASSERT(program->fInputs.isEmpty()); 3621 3622 GL_CALL(LinkProgram(fCopyPrograms[progIdx].fProgram)); 3623 3624 GL_CALL_RET(fCopyPrograms[progIdx].fTextureUniform, 3625 GetUniformLocation(fCopyPrograms[progIdx].fProgram, "u_texture")); 3626 GL_CALL_RET(fCopyPrograms[progIdx].fPosXformUniform, 3627 GetUniformLocation(fCopyPrograms[progIdx].fProgram, "u_posXform")); 3628 GL_CALL_RET(fCopyPrograms[progIdx].fTexCoordXformUniform, 3629 GetUniformLocation(fCopyPrograms[progIdx].fProgram, "u_texCoordXform")); 3630 3631 GL_CALL(BindAttribLocation(fCopyPrograms[progIdx].fProgram, 0, "a_vertex")); 3632 3633 GL_CALL(DeleteShader(vshader)); 3634 GL_CALL(DeleteShader(fshader)); 3635 3636 return true; 3637 } 3638 3639 bool GrGLGpu::createMipmapProgram(int progIdx) { 3640 const bool oddWidth = SkToBool(progIdx & 0x2); 3641 const bool oddHeight = SkToBool(progIdx & 0x1); 3642 const int numTaps = (oddWidth ? 2 : 1) * (oddHeight ? 2 : 1); 3643 3644 const GrShaderCaps* shaderCaps = this->caps()->shaderCaps(); 3645 3646 SkASSERT(!fMipmapPrograms[progIdx].fProgram); 3647 GL_CALL_RET(fMipmapPrograms[progIdx].fProgram, CreateProgram()); 3648 if (!fMipmapPrograms[progIdx].fProgram) { 3649 return false; 3650 } 3651 3652 const char* version = shaderCaps->versionDeclString(); 3653 GrShaderVar aVertex("a_vertex", kHalf2_GrSLType, GrShaderVar::kIn_TypeModifier); 3654 GrShaderVar uTexCoordXform("u_texCoordXform", kHalf4_GrSLType, 3655 GrShaderVar::kUniform_TypeModifier); 3656 GrShaderVar uTexture("u_texture", kTexture2DSampler_GrSLType, 3657 GrShaderVar::kUniform_TypeModifier); 3658 // We need 1, 2, or 4 texture coordinates (depending on parity of each dimension): 3659 GrShaderVar vTexCoords[] = { 3660 GrShaderVar("v_texCoord0", kHalf2_GrSLType, GrShaderVar::kOut_TypeModifier), 3661 GrShaderVar("v_texCoord1", kHalf2_GrSLType, GrShaderVar::kOut_TypeModifier), 3662 GrShaderVar("v_texCoord2", kHalf2_GrSLType, GrShaderVar::kOut_TypeModifier), 3663 GrShaderVar("v_texCoord3", kHalf2_GrSLType, GrShaderVar::kOut_TypeModifier), 3664 }; 3665 GrShaderVar oFragColor("o_FragColor", kHalf4_GrSLType,GrShaderVar::kOut_TypeModifier); 3666 3667 SkString vshaderTxt(version); 3668 if (shaderCaps->noperspectiveInterpolationSupport()) { 3669 if (const char* extension = shaderCaps->noperspectiveInterpolationExtensionString()) { 3670 vshaderTxt.appendf("#extension %s : require\n", extension); 3671 } 3672 vTexCoords[0].addModifier("noperspective"); 3673 vTexCoords[1].addModifier("noperspective"); 3674 vTexCoords[2].addModifier("noperspective"); 3675 vTexCoords[3].addModifier("noperspective"); 3676 } 3677 3678 aVertex.appendDecl(shaderCaps, &vshaderTxt); 3679 vshaderTxt.append(";"); 3680 uTexCoordXform.appendDecl(shaderCaps, &vshaderTxt); 3681 vshaderTxt.append(";"); 3682 for (int i = 0; i < numTaps; ++i) { 3683 vTexCoords[i].appendDecl(shaderCaps, &vshaderTxt); 3684 vshaderTxt.append(";"); 3685 } 3686 3687 vshaderTxt.append( 3688 "// Mipmap Program VS\n" 3689 "void main() {" 3690 " sk_Position.xy = a_vertex * half2(2, 2) - half2(1, 1);" 3691 " sk_Position.zw = half2(0, 1);" 3692 ); 3693 3694 // Insert texture coordinate computation: 3695 if (oddWidth && oddHeight) { 3696 vshaderTxt.append( 3697 " v_texCoord0 = a_vertex.xy * u_texCoordXform.yw;" 3698 " v_texCoord1 = a_vertex.xy * u_texCoordXform.yw + half2(u_texCoordXform.x, 0);" 3699 " v_texCoord2 = a_vertex.xy * u_texCoordXform.yw + half2(0, u_texCoordXform.z);" 3700 " v_texCoord3 = a_vertex.xy * u_texCoordXform.yw + u_texCoordXform.xz;" 3701 ); 3702 } else if (oddWidth) { 3703 vshaderTxt.append( 3704 " v_texCoord0 = a_vertex.xy * half2(u_texCoordXform.y, 1);" 3705 " v_texCoord1 = a_vertex.xy * half2(u_texCoordXform.y, 1) + half2(u_texCoordXform.x, 0);" 3706 ); 3707 } else if (oddHeight) { 3708 vshaderTxt.append( 3709 " v_texCoord0 = a_vertex.xy * half2(1, u_texCoordXform.w);" 3710 " v_texCoord1 = a_vertex.xy * half2(1, u_texCoordXform.w) + half2(0, u_texCoordXform.z);" 3711 ); 3712 } else { 3713 vshaderTxt.append( 3714 " v_texCoord0 = a_vertex.xy;" 3715 ); 3716 } 3717 3718 vshaderTxt.append("}"); 3719 3720 SkString fshaderTxt(version); 3721 if (shaderCaps->noperspectiveInterpolationSupport()) { 3722 if (const char* extension = shaderCaps->noperspectiveInterpolationExtensionString()) { 3723 fshaderTxt.appendf("#extension %s : require\n", extension); 3724 } 3725 } 3726 for (int i = 0; i < numTaps; ++i) { 3727 vTexCoords[i].setTypeModifier(GrShaderVar::kIn_TypeModifier); 3728 vTexCoords[i].appendDecl(shaderCaps, &fshaderTxt); 3729 fshaderTxt.append(";"); 3730 } 3731 uTexture.appendDecl(shaderCaps, &fshaderTxt); 3732 fshaderTxt.append(";"); 3733 fshaderTxt.append( 3734 "// Mipmap Program FS\n" 3735 "void main() {" 3736 ); 3737 3738 if (oddWidth && oddHeight) { 3739 fshaderTxt.append( 3740 " sk_FragColor = (texture(u_texture, v_texCoord0) + " 3741 " texture(u_texture, v_texCoord1) + " 3742 " texture(u_texture, v_texCoord2) + " 3743 " texture(u_texture, v_texCoord3)) * 0.25;" 3744 ); 3745 } else if (oddWidth || oddHeight) { 3746 fshaderTxt.append( 3747 " sk_FragColor = (texture(u_texture, v_texCoord0) + " 3748 " texture(u_texture, v_texCoord1)) * 0.5;" 3749 ); 3750 } else { 3751 fshaderTxt.append( 3752 " sk_FragColor = texture(u_texture, v_texCoord0);" 3753 ); 3754 } 3755 3756 fshaderTxt.append("}"); 3757 3758 const char* str; 3759 GrGLint length; 3760 3761 str = vshaderTxt.c_str(); 3762 length = SkToInt(vshaderTxt.size()); 3763 SkSL::Program::Settings settings; 3764 settings.fCaps = shaderCaps; 3765 SkSL::String glsl; 3766 std::unique_ptr<SkSL::Program> program = GrSkSLtoGLSL(*fGLContext, GR_GL_VERTEX_SHADER, 3767 &str, &length, 1, settings, &glsl); 3768 GrGLuint vshader = GrGLCompileAndAttachShader(*fGLContext, fMipmapPrograms[progIdx].fProgram, 3769 GR_GL_VERTEX_SHADER, glsl.c_str(), glsl.size(), 3770 &fStats, settings); 3771 SkASSERT(program->fInputs.isEmpty()); 3772 3773 str = fshaderTxt.c_str(); 3774 length = SkToInt(fshaderTxt.size()); 3775 program = GrSkSLtoGLSL(*fGLContext, GR_GL_FRAGMENT_SHADER, &str, &length, 1, settings, &glsl); 3776 GrGLuint fshader = GrGLCompileAndAttachShader(*fGLContext, fMipmapPrograms[progIdx].fProgram, 3777 GR_GL_FRAGMENT_SHADER, glsl.c_str(), glsl.size(), 3778 &fStats, settings); 3779 SkASSERT(program->fInputs.isEmpty()); 3780 3781 GL_CALL(LinkProgram(fMipmapPrograms[progIdx].fProgram)); 3782 3783 GL_CALL_RET(fMipmapPrograms[progIdx].fTextureUniform, 3784 GetUniformLocation(fMipmapPrograms[progIdx].fProgram, "u_texture")); 3785 GL_CALL_RET(fMipmapPrograms[progIdx].fTexCoordXformUniform, 3786 GetUniformLocation(fMipmapPrograms[progIdx].fProgram, "u_texCoordXform")); 3787 3788 GL_CALL(BindAttribLocation(fMipmapPrograms[progIdx].fProgram, 0, "a_vertex")); 3789 3790 GL_CALL(DeleteShader(vshader)); 3791 GL_CALL(DeleteShader(fshader)); 3792 3793 return true; 3794 } 3795 3796 bool GrGLGpu::createStencilClipClearProgram() { 3797 TRACE_EVENT0("skia", TRACE_FUNC); 3798 3799 if (!fStencilClipClearArrayBuffer) { 3800 static const GrGLfloat vdata[] = {-1, -1, 1, -1, -1, 1, 1, 1}; 3801 fStencilClipClearArrayBuffer.reset(GrGLBuffer::Create( 3802 this, sizeof(vdata), kVertex_GrBufferType, kStatic_GrAccessPattern, vdata)); 3803 if (!fStencilClipClearArrayBuffer) { 3804 return false; 3805 } 3806 } 3807 3808 SkASSERT(!fStencilClipClearProgram); 3809 GL_CALL_RET(fStencilClipClearProgram, CreateProgram()); 3810 if (!fStencilClipClearProgram) { 3811 return false; 3812 } 3813 3814 GrShaderVar aVertex("a_vertex", kHalf2_GrSLType, GrShaderVar::kIn_TypeModifier); 3815 const char* version = this->caps()->shaderCaps()->versionDeclString(); 3816 3817 SkString vshaderTxt(version); 3818 aVertex.appendDecl(this->caps()->shaderCaps(), &vshaderTxt); 3819 vshaderTxt.append(";"); 3820 vshaderTxt.append( 3821 "// Stencil Clip Clear Program VS\n" 3822 "void main() {" 3823 " sk_Position = float4(a_vertex.x, a_vertex.y, 0, 1);" 3824 "}"); 3825 3826 SkString fshaderTxt(version); 3827 fshaderTxt.appendf( 3828 "// Stencil Clip Clear Program FS\n" 3829 "void main() {" 3830 " sk_FragColor = half4(0);" 3831 "}"); 3832 3833 const char* str; 3834 GrGLint length; 3835 3836 str = vshaderTxt.c_str(); 3837 length = SkToInt(vshaderTxt.size()); 3838 SkSL::Program::Settings settings; 3839 settings.fCaps = this->caps()->shaderCaps(); 3840 SkSL::String glsl; 3841 std::unique_ptr<SkSL::Program> program = GrSkSLtoGLSL(*fGLContext, GR_GL_VERTEX_SHADER, 3842 &str, &length, 1, settings, &glsl); 3843 GrGLuint vshader = GrGLCompileAndAttachShader(*fGLContext, fStencilClipClearProgram, 3844 GR_GL_VERTEX_SHADER, glsl.c_str(), glsl.size(), 3845 &fStats, settings); 3846 SkASSERT(program->fInputs.isEmpty()); 3847 3848 str = fshaderTxt.c_str(); 3849 length = SkToInt(fshaderTxt.size()); 3850 program = GrSkSLtoGLSL(*fGLContext, GR_GL_FRAGMENT_SHADER, &str, &length, 1, settings, &glsl); 3851 GrGLuint fshader = GrGLCompileAndAttachShader(*fGLContext, fStencilClipClearProgram, 3852 GR_GL_FRAGMENT_SHADER, glsl.c_str(), glsl.size(), 3853 &fStats, settings); 3854 SkASSERT(program->fInputs.isEmpty()); 3855 3856 GL_CALL(LinkProgram(fStencilClipClearProgram)); 3857 3858 GL_CALL(BindAttribLocation(fStencilClipClearProgram, 0, "a_vertex")); 3859 3860 GL_CALL(DeleteShader(vshader)); 3861 GL_CALL(DeleteShader(fshader)); 3862 3863 return true; 3864 } 3865 3866 void GrGLGpu::clearStencilClipAsDraw(const GrFixedClip& clip, bool insideStencilMask, 3867 GrRenderTarget* rt, GrSurfaceOrigin origin) { 3868 // TODO: This should swizzle the output to match dst's config, though it is a debugging 3869 // visualization. 3870 3871 this->handleDirtyContext(); 3872 if (!fStencilClipClearProgram) { 3873 if (!this->createStencilClipClearProgram()) { 3874 SkDebugf("Failed to create stencil clip clear program.\n"); 3875 return; 3876 } 3877 } 3878 3879 GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(rt->asRenderTarget()); 3880 this->flushRenderTarget(glRT, nullptr); 3881 3882 GL_CALL(UseProgram(fStencilClipClearProgram)); 3883 fHWProgramID = fStencilClipClearProgram; 3884 3885 fHWVertexArrayState.setVertexArrayID(this, 0); 3886 3887 GrGLAttribArrayState* attribs = fHWVertexArrayState.bindInternalVertexArray(this); 3888 attribs->enableVertexArrays(this, 1); 3889 attribs->set(this, 0, fStencilClipClearArrayBuffer.get(), kHalf2_GrVertexAttribType, 3890 2 * sizeof(GrGLfloat), 0); 3891 3892 GrXferProcessor::BlendInfo blendInfo; 3893 blendInfo.reset(); 3894 this->flushBlend(blendInfo, GrSwizzle::RGBA()); 3895 this->flushColorWrite(false); 3896 this->flushHWAAState(glRT, false, false); 3897 this->flushScissor(clip.scissorState(), glRT->getViewport(), origin); 3898 this->flushWindowRectangles(clip.windowRectsState(), glRT, origin); 3899 GrStencilAttachment* sb = rt->renderTargetPriv().getStencilAttachment(); 3900 // This should only be called internally when we know we have a stencil buffer. 3901 SkASSERT(sb); 3902 GrStencilSettings settings = GrStencilSettings( 3903 *GrStencilSettings::SetClipBitSettings(insideStencilMask), false, sb->bits()); 3904 this->flushStencil(settings); 3905 GL_CALL(DrawArrays(GR_GL_TRIANGLE_STRIP, 0, 4)); 3906 } 3907 3908 bool GrGLGpu::createClearColorProgram() { 3909 TRACE_EVENT0("skia", TRACE_FUNC); 3910 3911 if (!fClearProgramArrayBuffer) { 3912 static const GrGLfloat vdata[] = {-1, -1, 1, -1, -1, 1, 1, 1}; 3913 fClearProgramArrayBuffer.reset(GrGLBuffer::Create(this, sizeof(vdata), kVertex_GrBufferType, 3914 kStatic_GrAccessPattern, vdata)); 3915 if (!fClearProgramArrayBuffer) { 3916 return false; 3917 } 3918 } 3919 3920 SkASSERT(!fClearColorProgram.fProgram); 3921 GL_CALL_RET(fClearColorProgram.fProgram, CreateProgram()); 3922 if (!fClearColorProgram.fProgram) { 3923 return false; 3924 } 3925 3926 GrShaderVar aVertex("a_vertex", kHalf2_GrSLType, GrShaderVar::kIn_TypeModifier); 3927 const char* version = this->caps()->shaderCaps()->versionDeclString(); 3928 3929 SkString vshaderTxt(version); 3930 aVertex.appendDecl(this->caps()->shaderCaps(), &vshaderTxt); 3931 vshaderTxt.append(";"); 3932 vshaderTxt.append(R"( 3933 // Clear Color Program VS 3934 void main() { 3935 sk_Position = float4(a_vertex.x, a_vertex.y, 0, 1); 3936 })"); 3937 3938 GrShaderVar uColor("u_color", kHalf4_GrSLType, GrShaderVar::kUniform_TypeModifier); 3939 SkString fshaderTxt(version); 3940 uColor.appendDecl(this->caps()->shaderCaps(), &fshaderTxt); 3941 fshaderTxt.append(";"); 3942 fshaderTxt.appendf(R"( 3943 // Clear Color Program FS 3944 void main() { 3945 sk_FragColor = u_color; 3946 })"); 3947 3948 const char* str; 3949 GrGLint length; 3950 3951 str = vshaderTxt.c_str(); 3952 length = SkToInt(vshaderTxt.size()); 3953 SkSL::Program::Settings settings; 3954 settings.fCaps = this->caps()->shaderCaps(); 3955 SkSL::String glsl; 3956 GrSkSLtoGLSL(*fGLContext, GR_GL_VERTEX_SHADER, &str, &length, 1, settings, &glsl); 3957 GrGLuint vshader = GrGLCompileAndAttachShader(*fGLContext, fClearColorProgram.fProgram, 3958 GR_GL_VERTEX_SHADER, glsl.c_str(), glsl.size(), 3959 &fStats, settings); 3960 3961 str = fshaderTxt.c_str(); 3962 length = SkToInt(fshaderTxt.size()); 3963 GrSkSLtoGLSL(*fGLContext, GR_GL_FRAGMENT_SHADER, &str, &length, 1, settings, &glsl); 3964 GrGLuint fshader = GrGLCompileAndAttachShader(*fGLContext, fClearColorProgram.fProgram, 3965 GR_GL_FRAGMENT_SHADER, glsl.c_str(), glsl.size(), 3966 &fStats, settings); 3967 3968 GL_CALL(LinkProgram(fClearColorProgram.fProgram)); 3969 3970 GL_CALL(BindAttribLocation(fClearColorProgram.fProgram, 0, "a_vertex")); 3971 3972 GL_CALL_RET(fClearColorProgram.fColorUniform, 3973 GetUniformLocation(fClearColorProgram.fProgram, "u_color")); 3974 3975 GL_CALL(DeleteShader(vshader)); 3976 GL_CALL(DeleteShader(fshader)); 3977 3978 return true; 3979 } 3980 3981 void GrGLGpu::clearColorAsDraw(const GrFixedClip& clip, GrGLfloat r, GrGLfloat g, GrGLfloat b, 3982 GrGLfloat a, GrRenderTarget* dst, GrSurfaceOrigin origin) { 3983 if (!fClearColorProgram.fProgram) { 3984 if (!this->createClearColorProgram()) { 3985 SkDebugf("Failed to create clear color program.\n"); 3986 return; 3987 } 3988 } 3989 3990 GrGLIRect dstVP; 3991 this->bindSurfaceFBOForPixelOps(dst, GR_GL_FRAMEBUFFER, &dstVP, kDst_TempFBOTarget); 3992 this->flushViewport(dstVP); 3993 fHWBoundRenderTargetUniqueID.makeInvalid(); 3994 3995 GL_CALL(UseProgram(fClearColorProgram.fProgram)); 3996 fHWProgramID = fClearColorProgram.fProgram; 3997 3998 fHWVertexArrayState.setVertexArrayID(this, 0); 3999 4000 GrGLAttribArrayState* attribs = fHWVertexArrayState.bindInternalVertexArray(this); 4001 attribs->enableVertexArrays(this, 1); 4002 attribs->set(this, 0, fClearProgramArrayBuffer.get(), kHalf2_GrVertexAttribType, 4003 2 * sizeof(GrGLfloat), 0); 4004 4005 GrGLRenderTarget* glrt = static_cast<GrGLRenderTarget*>(dst); 4006 this->flushScissor(clip.scissorState(), glrt->getViewport(), origin); 4007 this->flushWindowRectangles(clip.windowRectsState(), glrt, origin); 4008 4009 GL_CALL(Uniform4f(fClearColorProgram.fColorUniform, r, g, b, a)); 4010 4011 GrXferProcessor::BlendInfo blendInfo; 4012 blendInfo.reset(); 4013 this->flushBlend(blendInfo, GrSwizzle::RGBA()); 4014 this->flushColorWrite(true); 4015 this->flushHWAAState(nullptr, false, false); 4016 this->disableStencil(); 4017 if (this->glCaps().srgbWriteControl()) { 4018 this->flushFramebufferSRGB(true); 4019 } 4020 4021 GL_CALL(DrawArrays(GR_GL_TRIANGLE_STRIP, 0, 4)); 4022 this->unbindTextureFBOForPixelOps(GR_GL_FRAMEBUFFER, dst); 4023 this->didWriteToSurface(dst, clip.scissorEnabled() ? &clip.scissorRect() : nullptr); 4024 } 4025 4026 bool GrGLGpu::copySurfaceAsDraw(GrSurface* dst, GrSurfaceOrigin dstOrigin, 4027 GrSurface* src, GrSurfaceOrigin srcOrigin, 4028 const SkIRect& srcRect, 4029 const SkIPoint& dstPoint) { 4030 GrGLTexture* srcTex = static_cast<GrGLTexture*>(src->asTexture()); 4031 int progIdx = TextureToCopyProgramIdx(srcTex); 4032 4033 if (!fCopyPrograms[progIdx].fProgram) { 4034 if (!this->createCopyProgram(srcTex)) { 4035 SkDebugf("Failed to create copy program.\n"); 4036 return false; 4037 } 4038 } 4039 4040 int w = srcRect.width(); 4041 int h = srcRect.height(); 4042 4043 this->bindTexture(0, GrSamplerState::ClampNearest(), true, srcTex, srcOrigin); 4044 4045 GrGLIRect dstVP; 4046 this->bindSurfaceFBOForPixelOps(dst, GR_GL_FRAMEBUFFER, &dstVP, kDst_TempFBOTarget); 4047 this->flushViewport(dstVP); 4048 fHWBoundRenderTargetUniqueID.makeInvalid(); 4049 4050 SkIRect dstRect = SkIRect::MakeXYWH(dstPoint.fX, dstPoint.fY, w, h); 4051 4052 GL_CALL(UseProgram(fCopyPrograms[progIdx].fProgram)); 4053 fHWProgramID = fCopyPrograms[progIdx].fProgram; 4054 4055 fHWVertexArrayState.setVertexArrayID(this, 0); 4056 4057 GrGLAttribArrayState* attribs = fHWVertexArrayState.bindInternalVertexArray(this); 4058 attribs->enableVertexArrays(this, 1); 4059 attribs->set(this, 0, fCopyProgramArrayBuffer.get(), kHalf2_GrVertexAttribType, 4060 2 * sizeof(GrGLfloat), 0); 4061 4062 // dst rect edges in NDC (-1 to 1) 4063 int dw = dst->width(); 4064 int dh = dst->height(); 4065 GrGLfloat dx0 = 2.f * dstPoint.fX / dw - 1.f; 4066 GrGLfloat dx1 = 2.f * (dstPoint.fX + w) / dw - 1.f; 4067 GrGLfloat dy0 = 2.f * dstPoint.fY / dh - 1.f; 4068 GrGLfloat dy1 = 2.f * (dstPoint.fY + h) / dh - 1.f; 4069 if (kBottomLeft_GrSurfaceOrigin == dstOrigin) { 4070 dy0 = -dy0; 4071 dy1 = -dy1; 4072 } 4073 4074 GrGLfloat sx0 = (GrGLfloat)srcRect.fLeft; 4075 GrGLfloat sx1 = (GrGLfloat)(srcRect.fLeft + w); 4076 GrGLfloat sy0 = (GrGLfloat)srcRect.fTop; 4077 GrGLfloat sy1 = (GrGLfloat)(srcRect.fTop + h); 4078 int sw = src->width(); 4079 int sh = src->height(); 4080 if (kBottomLeft_GrSurfaceOrigin == srcOrigin) { 4081 sy0 = sh - sy0; 4082 sy1 = sh - sy1; 4083 } 4084 // src rect edges in normalized texture space (0 to 1) 4085 sx0 /= sw; 4086 sx1 /= sw; 4087 sy0 /= sh; 4088 sy1 /= sh; 4089 4090 GL_CALL(Uniform4f(fCopyPrograms[progIdx].fPosXformUniform, dx1 - dx0, dy1 - dy0, dx0, dy0)); 4091 GL_CALL(Uniform4f(fCopyPrograms[progIdx].fTexCoordXformUniform, 4092 sx1 - sx0, sy1 - sy0, sx0, sy0)); 4093 GL_CALL(Uniform1i(fCopyPrograms[progIdx].fTextureUniform, 0)); 4094 4095 GrXferProcessor::BlendInfo blendInfo; 4096 blendInfo.reset(); 4097 this->flushBlend(blendInfo, GrSwizzle::RGBA()); 4098 this->flushColorWrite(true); 4099 this->flushHWAAState(nullptr, false, false); 4100 this->disableScissor(); 4101 this->disableWindowRectangles(); 4102 this->disableStencil(); 4103 if (this->glCaps().srgbWriteControl()) { 4104 this->flushFramebufferSRGB(true); 4105 } 4106 4107 GL_CALL(DrawArrays(GR_GL_TRIANGLE_STRIP, 0, 4)); 4108 this->unbindTextureFBOForPixelOps(GR_GL_FRAMEBUFFER, dst); 4109 this->didWriteToSurface(dst, &dstRect); 4110 4111 return true; 4112 } 4113 4114 void GrGLGpu::copySurfaceAsCopyTexSubImage(GrSurface* dst, GrSurfaceOrigin dstOrigin, 4115 GrSurface* src, GrSurfaceOrigin srcOrigin, 4116 const SkIRect& srcRect, 4117 const SkIPoint& dstPoint) { 4118 SkASSERT(can_copy_texsubimage(dst, dstOrigin, src, srcOrigin, this)); 4119 GrGLIRect srcVP; 4120 this->bindSurfaceFBOForPixelOps(src, GR_GL_FRAMEBUFFER, &srcVP, kSrc_TempFBOTarget); 4121 GrGLTexture* dstTex = static_cast<GrGLTexture *>(dst->asTexture()); 4122 SkASSERT(dstTex); 4123 // We modified the bound FBO 4124 fHWBoundRenderTargetUniqueID.makeInvalid(); 4125 GrGLIRect srcGLRect; 4126 srcGLRect.setRelativeTo(srcVP, srcRect, srcOrigin); 4127 4128 this->setScratchTextureUnit(); 4129 GL_CALL(BindTexture(dstTex->target(), dstTex->textureID())); 4130 GrGLint dstY; 4131 if (kBottomLeft_GrSurfaceOrigin == dstOrigin) { 4132 dstY = dst->height() - (dstPoint.fY + srcGLRect.fHeight); 4133 } else { 4134 dstY = dstPoint.fY; 4135 } 4136 GL_CALL(CopyTexSubImage2D(dstTex->target(), 0, 4137 dstPoint.fX, dstY, 4138 srcGLRect.fLeft, srcGLRect.fBottom, 4139 srcGLRect.fWidth, srcGLRect.fHeight)); 4140 this->unbindTextureFBOForPixelOps(GR_GL_FRAMEBUFFER, src); 4141 SkIRect dstRect = SkIRect::MakeXYWH(dstPoint.fX, dstPoint.fY, 4142 srcRect.width(), srcRect.height()); 4143 this->didWriteToSurface(dst, &dstRect); 4144 } 4145 4146 bool GrGLGpu::copySurfaceAsBlitFramebuffer(GrSurface* dst, GrSurfaceOrigin dstOrigin, 4147 GrSurface* src, GrSurfaceOrigin srcOrigin, 4148 const SkIRect& srcRect, 4149 const SkIPoint& dstPoint) { 4150 SkASSERT(can_blit_framebuffer_for_copy_surface(dst, dstOrigin, src, srcOrigin, 4151 srcRect, dstPoint, this)); 4152 SkIRect dstRect = SkIRect::MakeXYWH(dstPoint.fX, dstPoint.fY, 4153 srcRect.width(), srcRect.height()); 4154 if (dst == src) { 4155 if (SkIRect::IntersectsNoEmptyCheck(dstRect, srcRect)) { 4156 return false; 4157 } 4158 } 4159 4160 GrGLIRect dstVP; 4161 GrGLIRect srcVP; 4162 this->bindSurfaceFBOForPixelOps(dst, GR_GL_DRAW_FRAMEBUFFER, &dstVP, kDst_TempFBOTarget); 4163 this->bindSurfaceFBOForPixelOps(src, GR_GL_READ_FRAMEBUFFER, &srcVP, kSrc_TempFBOTarget); 4164 // We modified the bound FBO 4165 fHWBoundRenderTargetUniqueID.makeInvalid(); 4166 GrGLIRect srcGLRect; 4167 GrGLIRect dstGLRect; 4168 srcGLRect.setRelativeTo(srcVP, srcRect, srcOrigin); 4169 dstGLRect.setRelativeTo(dstVP, dstRect, dstOrigin); 4170 4171 // BlitFrameBuffer respects the scissor, so disable it. 4172 this->disableScissor(); 4173 this->disableWindowRectangles(); 4174 4175 GrGLint srcY0; 4176 GrGLint srcY1; 4177 // Does the blit need to y-mirror or not? 4178 if (srcOrigin == dstOrigin) { 4179 srcY0 = srcGLRect.fBottom; 4180 srcY1 = srcGLRect.fBottom + srcGLRect.fHeight; 4181 } else { 4182 srcY0 = srcGLRect.fBottom + srcGLRect.fHeight; 4183 srcY1 = srcGLRect.fBottom; 4184 } 4185 GL_CALL(BlitFramebuffer(srcGLRect.fLeft, 4186 srcY0, 4187 srcGLRect.fLeft + srcGLRect.fWidth, 4188 srcY1, 4189 dstGLRect.fLeft, 4190 dstGLRect.fBottom, 4191 dstGLRect.fLeft + dstGLRect.fWidth, 4192 dstGLRect.fBottom + dstGLRect.fHeight, 4193 GR_GL_COLOR_BUFFER_BIT, GR_GL_NEAREST)); 4194 this->unbindTextureFBOForPixelOps(GR_GL_DRAW_FRAMEBUFFER, dst); 4195 this->unbindTextureFBOForPixelOps(GR_GL_READ_FRAMEBUFFER, src); 4196 this->didWriteToSurface(dst, &dstRect); 4197 return true; 4198 } 4199 4200 // Manual implementation of mipmap generation, to work around driver bugs w/sRGB. 4201 // Uses draw calls to do a series of downsample operations to successive mips. 4202 // If this returns false, then the calling code falls back to using glGenerateMipmap. 4203 bool GrGLGpu::generateMipmap(GrGLTexture* texture, GrSurfaceOrigin textureOrigin, 4204 bool gammaCorrect) { 4205 SkASSERT(!GrPixelConfigIsSint(texture->config())); 4206 // Our iterative downsample requires the ability to limit which level we're sampling: 4207 if (!this->glCaps().doManualMipmapping()) { 4208 return false; 4209 } 4210 4211 // Mipmaps are only supported on 2D textures: 4212 if (GR_GL_TEXTURE_2D != texture->target()) { 4213 return false; 4214 } 4215 4216 // We need to be able to render to the texture for this to work: 4217 if (!this->glCaps().canConfigBeFBOColorAttachment(texture->config())) { 4218 return false; 4219 } 4220 4221 // If we're mipping an sRGB texture, we need to ensure FB sRGB is correct: 4222 if (GrPixelConfigIsSRGB(texture->config())) { 4223 // If we have write-control, just set the state that we want: 4224 if (this->glCaps().srgbWriteControl()) { 4225 this->flushFramebufferSRGB(gammaCorrect); 4226 } else if (!gammaCorrect) { 4227 // If we don't have write-control we can't do non-gamma-correct mipmapping: 4228 return false; 4229 } 4230 } 4231 4232 int width = texture->width(); 4233 int height = texture->height(); 4234 int levelCount = SkMipMap::ComputeLevelCount(width, height) + 1; 4235 4236 // Define all mips, if we haven't previously done so: 4237 if (0 == texture->texturePriv().maxMipMapLevel()) { 4238 GrGLenum internalFormat; 4239 GrGLenum externalFormat; 4240 GrGLenum externalType; 4241 if (!this->glCaps().getTexImageFormats(texture->config(), texture->config(), 4242 &internalFormat, &externalFormat, &externalType)) { 4243 return false; 4244 } 4245 4246 this->unbindCpuToGpuXferBuffer(); 4247 4248 for (GrGLint level = 1; level < levelCount; ++level) { 4249 // Define the next mip: 4250 width = SkTMax(1, width / 2); 4251 height = SkTMax(1, height / 2); 4252 GL_ALLOC_CALL(this->glInterface(), TexImage2D(GR_GL_TEXTURE_2D, level, internalFormat, 4253 width, height, 0, 4254 externalFormat, externalType, nullptr)); 4255 } 4256 } 4257 4258 // Create (if necessary), then bind temporary FBO: 4259 if (0 == fTempDstFBOID) { 4260 GL_CALL(GenFramebuffers(1, &fTempDstFBOID)); 4261 } 4262 GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, fTempDstFBOID)); 4263 fHWBoundRenderTargetUniqueID.makeInvalid(); 4264 4265 // Bind the texture, to get things configured for filtering. 4266 // We'll be changing our base level further below: 4267 this->setTextureUnit(0); 4268 this->bindTexture(0, GrSamplerState::ClampBilerp(), gammaCorrect, texture, textureOrigin); 4269 4270 // Vertex data: 4271 if (!fMipmapProgramArrayBuffer) { 4272 static const GrGLfloat vdata[] = { 4273 0, 0, 4274 0, 1, 4275 1, 0, 4276 1, 1 4277 }; 4278 fMipmapProgramArrayBuffer.reset(GrGLBuffer::Create(this, sizeof(vdata), 4279 kVertex_GrBufferType, 4280 kStatic_GrAccessPattern, vdata)); 4281 } 4282 if (!fMipmapProgramArrayBuffer) { 4283 return false; 4284 } 4285 4286 fHWVertexArrayState.setVertexArrayID(this, 0); 4287 4288 GrGLAttribArrayState* attribs = fHWVertexArrayState.bindInternalVertexArray(this); 4289 attribs->enableVertexArrays(this, 1); 4290 attribs->set(this, 0, fMipmapProgramArrayBuffer.get(), kHalf2_GrVertexAttribType, 4291 2 * sizeof(GrGLfloat), 0); 4292 4293 // Set "simple" state once: 4294 GrXferProcessor::BlendInfo blendInfo; 4295 blendInfo.reset(); 4296 this->flushBlend(blendInfo, GrSwizzle::RGBA()); 4297 this->flushColorWrite(true); 4298 this->flushHWAAState(nullptr, false, false); 4299 this->disableScissor(); 4300 this->disableWindowRectangles(); 4301 this->disableStencil(); 4302 4303 // Do all the blits: 4304 width = texture->width(); 4305 height = texture->height(); 4306 GrGLIRect viewport; 4307 viewport.fLeft = 0; 4308 viewport.fBottom = 0; 4309 for (GrGLint level = 1; level < levelCount; ++level) { 4310 // Get and bind the program for this particular downsample (filter shape can vary): 4311 int progIdx = TextureSizeToMipmapProgramIdx(width, height); 4312 if (!fMipmapPrograms[progIdx].fProgram) { 4313 if (!this->createMipmapProgram(progIdx)) { 4314 SkDebugf("Failed to create mipmap program.\n"); 4315 return false; 4316 } 4317 } 4318 GL_CALL(UseProgram(fMipmapPrograms[progIdx].fProgram)); 4319 fHWProgramID = fMipmapPrograms[progIdx].fProgram; 4320 4321 // Texcoord uniform is expected to contain (1/w, (w-1)/w, 1/h, (h-1)/h) 4322 const float invWidth = 1.0f / width; 4323 const float invHeight = 1.0f / height; 4324 GL_CALL(Uniform4f(fMipmapPrograms[progIdx].fTexCoordXformUniform, 4325 invWidth, (width - 1) * invWidth, invHeight, (height - 1) * invHeight)); 4326 GL_CALL(Uniform1i(fMipmapPrograms[progIdx].fTextureUniform, 0)); 4327 4328 // Only sample from previous mip 4329 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_BASE_LEVEL, level - 1)); 4330 4331 GL_CALL(FramebufferTexture2D(GR_GL_FRAMEBUFFER, GR_GL_COLOR_ATTACHMENT0, 4332 GR_GL_TEXTURE_2D, texture->textureID(), level)); 4333 4334 width = SkTMax(1, width / 2); 4335 height = SkTMax(1, height / 2); 4336 viewport.fWidth = width; 4337 viewport.fHeight = height; 4338 this->flushViewport(viewport); 4339 4340 GL_CALL(DrawArrays(GR_GL_TRIANGLE_STRIP, 0, 4)); 4341 } 4342 4343 // Unbind: 4344 GL_CALL(FramebufferTexture2D(GR_GL_FRAMEBUFFER, GR_GL_COLOR_ATTACHMENT0, 4345 GR_GL_TEXTURE_2D, 0, 0)); 4346 4347 return true; 4348 } 4349 4350 void GrGLGpu::onQueryMultisampleSpecs(GrRenderTarget* rt, GrSurfaceOrigin rtOrigin, 4351 const GrStencilSettings& stencil, 4352 int* effectiveSampleCnt, SamplePattern* samplePattern) { 4353 SkASSERT(GrFSAAType::kMixedSamples != rt->fsaaType() || 4354 rt->renderTargetPriv().getStencilAttachment() || stencil.isDisabled()); 4355 4356 this->flushStencil(stencil); 4357 this->flushHWAAState(rt, true, !stencil.isDisabled()); 4358 this->flushRenderTarget(static_cast<GrGLRenderTarget*>(rt), &SkIRect::EmptyIRect()); 4359 4360 if (0 != this->caps()->maxRasterSamples()) { 4361 GR_GL_GetIntegerv(this->glInterface(), GR_GL_EFFECTIVE_RASTER_SAMPLES, effectiveSampleCnt); 4362 } else { 4363 GR_GL_GetIntegerv(this->glInterface(), GR_GL_SAMPLES, effectiveSampleCnt); 4364 } 4365 4366 SkASSERT(*effectiveSampleCnt >= rt->numStencilSamples()); 4367 4368 if (this->caps()->sampleLocationsSupport()) { 4369 samplePattern->reset(*effectiveSampleCnt); 4370 for (int i = 0; i < *effectiveSampleCnt; ++i) { 4371 GrGLfloat pos[2]; 4372 GL_CALL(GetMultisamplefv(GR_GL_SAMPLE_POSITION, i, pos)); 4373 if (kTopLeft_GrSurfaceOrigin == rtOrigin) { 4374 (*samplePattern)[i].set(pos[0], pos[1]); 4375 } else { 4376 (*samplePattern)[i].set(pos[0], 1 - pos[1]); 4377 } 4378 } 4379 } 4380 } 4381 4382 void GrGLGpu::xferBarrier(GrRenderTarget* rt, GrXferBarrierType type) { 4383 SkASSERT(type); 4384 switch (type) { 4385 case kTexture_GrXferBarrierType: { 4386 GrGLRenderTarget* glrt = static_cast<GrGLRenderTarget*>(rt); 4387 SkASSERT(glrt->textureFBOID() != 0 && glrt->renderFBOID() != 0); 4388 if (glrt->textureFBOID() != glrt->renderFBOID()) { 4389 // The render target uses separate storage so no need for glTextureBarrier. 4390 // FIXME: The render target will resolve automatically when its texture is bound, 4391 // but we could resolve only the bounds that will be read if we do it here instead. 4392 return; 4393 } 4394 SkASSERT(this->caps()->textureBarrierSupport()); 4395 GL_CALL(TextureBarrier()); 4396 return; 4397 } 4398 case kBlend_GrXferBarrierType: 4399 SkASSERT(GrCaps::kAdvanced_BlendEquationSupport == 4400 this->caps()->blendEquationSupport()); 4401 GL_CALL(BlendBarrier()); 4402 return; 4403 default: break; // placate compiler warnings that kNone not handled 4404 } 4405 } 4406 4407 GrBackendTexture GrGLGpu::createTestingOnlyBackendTexture(void* pixels, int w, int h, 4408 GrPixelConfig config, bool /*isRT*/, 4409 GrMipMapped mipMapped) { 4410 if (!this->caps()->isConfigTexturable(config)) { 4411 return GrBackendTexture(); // invalid 4412 } 4413 4414 // Currently we don't support uploading pixel data when mipped. 4415 if (pixels && GrMipMapped::kYes == mipMapped) { 4416 return GrBackendTexture(); // invalid 4417 } 4418 4419 GrGLTextureInfo info; 4420 info.fTarget = GR_GL_TEXTURE_2D; 4421 info.fID = 0; 4422 GL_CALL(GenTextures(1, &info.fID)); 4423 GL_CALL(ActiveTexture(GR_GL_TEXTURE0)); 4424 GL_CALL(PixelStorei(GR_GL_UNPACK_ALIGNMENT, 1)); 4425 GL_CALL(BindTexture(info.fTarget, info.fID)); 4426 fHWBoundTextureUniqueIDs[0].makeInvalid(); 4427 GL_CALL(TexParameteri(info.fTarget, GR_GL_TEXTURE_MAG_FILTER, GR_GL_NEAREST)); 4428 GL_CALL(TexParameteri(info.fTarget, GR_GL_TEXTURE_MIN_FILTER, GR_GL_NEAREST)); 4429 GL_CALL(TexParameteri(info.fTarget, GR_GL_TEXTURE_WRAP_S, GR_GL_CLAMP_TO_EDGE)); 4430 GL_CALL(TexParameteri(info.fTarget, GR_GL_TEXTURE_WRAP_T, GR_GL_CLAMP_TO_EDGE)); 4431 4432 GrGLenum internalFormat; 4433 GrGLenum externalFormat; 4434 GrGLenum externalType; 4435 4436 if (!this->glCaps().getTexImageFormats(config, config, &internalFormat, &externalFormat, 4437 &externalType)) { 4438 return GrBackendTexture(); // invalid 4439 } 4440 4441 info.fFormat = this->glCaps().configSizedInternalFormat(config); 4442 4443 this->unbindCpuToGpuXferBuffer(); 4444 4445 // Figure out the number of mip levels. 4446 int mipLevels = 1; 4447 if (GrMipMapped::kYes == mipMapped) { 4448 mipLevels = SkMipMap::ComputeLevelCount(w, h) + 1; 4449 } 4450 4451 size_t bpp = GrBytesPerPixel(config); 4452 size_t baseLayerSize = bpp * w * h; 4453 SkAutoMalloc defaultStorage(baseLayerSize); 4454 if (!pixels) { 4455 // Fill in the texture with all zeros so we don't have random garbage 4456 pixels = defaultStorage.get(); 4457 memset(pixels, 0, baseLayerSize); 4458 } 4459 4460 int width = w; 4461 int height = h; 4462 for (int i = 0; i < mipLevels; ++i) { 4463 GL_CALL(TexImage2D(info.fTarget, i, internalFormat, width, height, 0, externalFormat, 4464 externalType, pixels)); 4465 width = SkTMax(1, width / 2); 4466 height = SkTMax(1, height / 2); 4467 } 4468 4469 return GrBackendTexture(w, h, mipMapped, info); 4470 } 4471 4472 bool GrGLGpu::isTestingOnlyBackendTexture(const GrBackendTexture& tex) const { 4473 SkASSERT(kOpenGL_GrBackend == tex.backend()); 4474 4475 const GrGLTextureInfo* info = tex.getGLTextureInfo(); 4476 if (!info) { 4477 return false; 4478 } 4479 4480 GrGLboolean result; 4481 GL_CALL_RET(result, IsTexture(info->fID)); 4482 4483 return (GR_GL_TRUE == result); 4484 } 4485 4486 void GrGLGpu::deleteTestingOnlyBackendTexture(GrBackendTexture* tex, bool abandonTexture) { 4487 SkASSERT(kOpenGL_GrBackend == tex->backend()); 4488 4489 const GrGLTextureInfo* info = tex->getGLTextureInfo(); 4490 if (info && !abandonTexture) { 4491 GrGLuint texID = info->fID; 4492 4493 GL_CALL(DeleteTextures(1, &texID)); 4494 } 4495 } 4496 4497 void GrGLGpu::resetShaderCacheForTesting() const { 4498 fProgramCache->abandon(); 4499 } 4500 4501 void GrGLGpu::testingOnly_flushGpuAndSync() { 4502 GL_CALL(Finish()); 4503 } 4504 4505 /////////////////////////////////////////////////////////////////////////////// 4506 4507 GrGLAttribArrayState* GrGLGpu::HWVertexArrayState::bindInternalVertexArray(GrGLGpu* gpu, 4508 const GrBuffer* ibuf) { 4509 GrGLAttribArrayState* attribState; 4510 4511 if (gpu->glCaps().isCoreProfile()) { 4512 if (!fCoreProfileVertexArray) { 4513 GrGLuint arrayID; 4514 GR_GL_CALL(gpu->glInterface(), GenVertexArrays(1, &arrayID)); 4515 int attrCount = gpu->glCaps().maxVertexAttributes(); 4516 fCoreProfileVertexArray = new GrGLVertexArray(arrayID, attrCount); 4517 } 4518 if (ibuf) { 4519 attribState = fCoreProfileVertexArray->bindWithIndexBuffer(gpu, ibuf); 4520 } else { 4521 attribState = fCoreProfileVertexArray->bind(gpu); 4522 } 4523 } else { 4524 if (ibuf) { 4525 // bindBuffer implicitly binds VAO 0 when binding an index buffer. 4526 gpu->bindBuffer(kIndex_GrBufferType, ibuf); 4527 } else { 4528 this->setVertexArrayID(gpu, 0); 4529 } 4530 int attrCount = gpu->glCaps().maxVertexAttributes(); 4531 if (fDefaultVertexArrayAttribState.count() != attrCount) { 4532 fDefaultVertexArrayAttribState.resize(attrCount); 4533 } 4534 attribState = &fDefaultVertexArrayAttribState; 4535 } 4536 return attribState; 4537 } 4538 4539 bool GrGLGpu::onIsACopyNeededForTextureParams(GrTextureProxy* proxy, 4540 const GrSamplerState& textureParams, 4541 GrTextureProducer::CopyParams* copyParams, 4542 SkScalar scaleAdjust[2]) const { 4543 const GrTexture* texture = proxy->priv().peekTexture(); 4544 if (!texture) { 4545 // The only way to get and EXTERNAL or RECTANGLE texture in Ganesh is to wrap them. 4546 // In that case the proxy should already be instantiated. 4547 return false; 4548 } 4549 4550 if (textureParams.isRepeated() || GrSamplerState::Filter::kMipMap == textureParams.filter()) { 4551 const GrGLTexture* glTexture = static_cast<const GrGLTexture*>(texture); 4552 if (GR_GL_TEXTURE_EXTERNAL == glTexture->target() || 4553 GR_GL_TEXTURE_RECTANGLE == glTexture->target()) { 4554 copyParams->fFilter = GrSamplerState::Filter::kNearest; 4555 copyParams->fWidth = texture->width(); 4556 copyParams->fHeight = texture->height(); 4557 return true; 4558 } 4559 } 4560 return false; 4561 } 4562 4563 void GrGLGpu::onFinishFlush(bool insertedSemaphore) { 4564 // If we inserted semaphores during the flush, we need to call GLFlush. 4565 if (insertedSemaphore) { 4566 GL_CALL(Flush()); 4567 } 4568 } 4569 4570 GrFence SK_WARN_UNUSED_RESULT GrGLGpu::insertFence() { 4571 SkASSERT(this->caps()->fenceSyncSupport()); 4572 GrGLsync sync; 4573 GL_CALL_RET(sync, FenceSync(GR_GL_SYNC_GPU_COMMANDS_COMPLETE, 0)); 4574 GR_STATIC_ASSERT(sizeof(GrFence) >= sizeof(GrGLsync)); 4575 return (GrFence)sync; 4576 } 4577 4578 bool GrGLGpu::waitFence(GrFence fence, uint64_t timeout) { 4579 GrGLenum result; 4580 GL_CALL_RET(result, ClientWaitSync((GrGLsync)fence, GR_GL_SYNC_FLUSH_COMMANDS_BIT, timeout)); 4581 return (GR_GL_CONDITION_SATISFIED == result); 4582 } 4583 4584 void GrGLGpu::deleteFence(GrFence fence) const { 4585 this->deleteSync((GrGLsync)fence); 4586 } 4587 4588 sk_sp<GrSemaphore> SK_WARN_UNUSED_RESULT GrGLGpu::makeSemaphore(bool isOwned) { 4589 SkASSERT(this->caps()->fenceSyncSupport()); 4590 return GrGLSemaphore::Make(this, isOwned); 4591 } 4592 4593 sk_sp<GrSemaphore> GrGLGpu::wrapBackendSemaphore(const GrBackendSemaphore& semaphore, 4594 GrResourceProvider::SemaphoreWrapType wrapType, 4595 GrWrapOwnership ownership) { 4596 SkASSERT(this->caps()->fenceSyncSupport()); 4597 return GrGLSemaphore::MakeWrapped(this, semaphore.glSync(), ownership); 4598 } 4599 4600 void GrGLGpu::insertSemaphore(sk_sp<GrSemaphore> semaphore, bool flush) { 4601 GrGLSemaphore* glSem = static_cast<GrGLSemaphore*>(semaphore.get()); 4602 4603 GrGLsync sync; 4604 GL_CALL_RET(sync, FenceSync(GR_GL_SYNC_GPU_COMMANDS_COMPLETE, 0)); 4605 glSem->setSync(sync); 4606 4607 if (flush) { 4608 GL_CALL(Flush()); 4609 } 4610 } 4611 4612 void GrGLGpu::waitSemaphore(sk_sp<GrSemaphore> semaphore) { 4613 GrGLSemaphore* glSem = static_cast<GrGLSemaphore*>(semaphore.get()); 4614 4615 GL_CALL(WaitSync(glSem->sync(), 0, GR_GL_TIMEOUT_IGNORED)); 4616 } 4617 4618 void GrGLGpu::deleteSync(GrGLsync sync) const { 4619 GL_CALL(DeleteSync(sync)); 4620 } 4621 4622 void GrGLGpu::insertEventMarker(const char* msg) { 4623 GL_CALL(InsertEventMarker(strlen(msg), msg)); 4624 } 4625 4626 sk_sp<GrSemaphore> GrGLGpu::prepareTextureForCrossContextUsage(GrTexture* texture) { 4627 // Set up a semaphore to be signaled once the data is ready, and flush GL 4628 sk_sp<GrSemaphore> semaphore = this->makeSemaphore(true); 4629 this->insertSemaphore(semaphore, true); 4630 4631 return semaphore; 4632 } 4633 4634 int GrGLGpu::TextureToCopyProgramIdx(GrTexture* texture) { 4635 switch (texture->texturePriv().samplerType()) { 4636 case kTexture2DSampler_GrSLType: 4637 return 0; 4638 case kITexture2DSampler_GrSLType: 4639 return 1; 4640 case kTexture2DRectSampler_GrSLType: 4641 return 2; 4642 case kTextureExternalSampler_GrSLType: 4643 return 3; 4644 default: 4645 SK_ABORT("Unexpected samper type"); 4646 return 0; 4647 } 4648 } 4649 4650 void GrGLGpu::onDumpJSON(SkJSONWriter* writer) const { 4651 // We are called by the base class, which has already called beginObject(). We choose to nest 4652 // all of our caps information in a named sub-object. 4653 writer->beginObject("GL GPU"); 4654 4655 const GrGLubyte* str; 4656 GL_CALL_RET(str, GetString(GR_GL_VERSION)); 4657 writer->appendString("GL_VERSION", (const char*)(str)); 4658 GL_CALL_RET(str, GetString(GR_GL_RENDERER)); 4659 writer->appendString("GL_RENDERER", (const char*)(str)); 4660 GL_CALL_RET(str, GetString(GR_GL_VENDOR)); 4661 writer->appendString("GL_VENDOR", (const char*)(str)); 4662 GL_CALL_RET(str, GetString(GR_GL_SHADING_LANGUAGE_VERSION)); 4663 writer->appendString("GL_SHADING_LANGUAGE_VERSION", (const char*)(str)); 4664 4665 writer->appendName("extensions"); 4666 glInterface()->fExtensions.dumpJSON(writer); 4667 4668 writer->endObject(); 4669 } 4670