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 9 #include "GrGLGpu.h" 10 #include "GrGLStencilAttachment.h" 11 #include "GrGLTextureRenderTarget.h" 12 #include "GrGpuResourcePriv.h" 13 #include "GrPipeline.h" 14 #include "GrRenderTargetPriv.h" 15 #include "GrSurfacePriv.h" 16 #include "GrTemplates.h" 17 #include "GrTexturePriv.h" 18 #include "GrTypes.h" 19 #include "GrVertices.h" 20 #include "SkStrokeRec.h" 21 #include "SkTemplates.h" 22 23 #define GL_CALL(X) GR_GL_CALL(this->glInterface(), X) 24 #define GL_CALL_RET(RET, X) GR_GL_CALL_RET(this->glInterface(), RET, X) 25 26 #define SKIP_CACHE_CHECK true 27 28 #if GR_GL_CHECK_ALLOC_WITH_GET_ERROR 29 #define CLEAR_ERROR_BEFORE_ALLOC(iface) GrGLClearErr(iface) 30 #define GL_ALLOC_CALL(iface, call) GR_GL_CALL_NOERRCHECK(iface, call) 31 #define CHECK_ALLOC_ERROR(iface) GR_GL_GET_ERROR(iface) 32 #else 33 #define CLEAR_ERROR_BEFORE_ALLOC(iface) 34 #define GL_ALLOC_CALL(iface, call) GR_GL_CALL(iface, call) 35 #define CHECK_ALLOC_ERROR(iface) GR_GL_NO_ERROR 36 #endif 37 38 39 /////////////////////////////////////////////////////////////////////////////// 40 41 42 static const GrGLenum gXfermodeEquation2Blend[] = { 43 // Basic OpenGL blend equations. 44 GR_GL_FUNC_ADD, 45 GR_GL_FUNC_SUBTRACT, 46 GR_GL_FUNC_REVERSE_SUBTRACT, 47 48 // GL_KHR_blend_equation_advanced. 49 GR_GL_SCREEN, 50 GR_GL_OVERLAY, 51 GR_GL_DARKEN, 52 GR_GL_LIGHTEN, 53 GR_GL_COLORDODGE, 54 GR_GL_COLORBURN, 55 GR_GL_HARDLIGHT, 56 GR_GL_SOFTLIGHT, 57 GR_GL_DIFFERENCE, 58 GR_GL_EXCLUSION, 59 GR_GL_MULTIPLY, 60 GR_GL_HSL_HUE, 61 GR_GL_HSL_SATURATION, 62 GR_GL_HSL_COLOR, 63 GR_GL_HSL_LUMINOSITY 64 }; 65 GR_STATIC_ASSERT(0 == kAdd_GrBlendEquation); 66 GR_STATIC_ASSERT(1 == kSubtract_GrBlendEquation); 67 GR_STATIC_ASSERT(2 == kReverseSubtract_GrBlendEquation); 68 GR_STATIC_ASSERT(3 == kScreen_GrBlendEquation); 69 GR_STATIC_ASSERT(4 == kOverlay_GrBlendEquation); 70 GR_STATIC_ASSERT(5 == kDarken_GrBlendEquation); 71 GR_STATIC_ASSERT(6 == kLighten_GrBlendEquation); 72 GR_STATIC_ASSERT(7 == kColorDodge_GrBlendEquation); 73 GR_STATIC_ASSERT(8 == kColorBurn_GrBlendEquation); 74 GR_STATIC_ASSERT(9 == kHardLight_GrBlendEquation); 75 GR_STATIC_ASSERT(10 == kSoftLight_GrBlendEquation); 76 GR_STATIC_ASSERT(11 == kDifference_GrBlendEquation); 77 GR_STATIC_ASSERT(12 == kExclusion_GrBlendEquation); 78 GR_STATIC_ASSERT(13 == kMultiply_GrBlendEquation); 79 GR_STATIC_ASSERT(14 == kHSLHue_GrBlendEquation); 80 GR_STATIC_ASSERT(15 == kHSLSaturation_GrBlendEquation); 81 GR_STATIC_ASSERT(16 == kHSLColor_GrBlendEquation); 82 GR_STATIC_ASSERT(17 == kHSLLuminosity_GrBlendEquation); 83 GR_STATIC_ASSERT(SK_ARRAY_COUNT(gXfermodeEquation2Blend) == kGrBlendEquationCnt); 84 85 static const GrGLenum gXfermodeCoeff2Blend[] = { 86 GR_GL_ZERO, 87 GR_GL_ONE, 88 GR_GL_SRC_COLOR, 89 GR_GL_ONE_MINUS_SRC_COLOR, 90 GR_GL_DST_COLOR, 91 GR_GL_ONE_MINUS_DST_COLOR, 92 GR_GL_SRC_ALPHA, 93 GR_GL_ONE_MINUS_SRC_ALPHA, 94 GR_GL_DST_ALPHA, 95 GR_GL_ONE_MINUS_DST_ALPHA, 96 GR_GL_CONSTANT_COLOR, 97 GR_GL_ONE_MINUS_CONSTANT_COLOR, 98 GR_GL_CONSTANT_ALPHA, 99 GR_GL_ONE_MINUS_CONSTANT_ALPHA, 100 101 // extended blend coeffs 102 GR_GL_SRC1_COLOR, 103 GR_GL_ONE_MINUS_SRC1_COLOR, 104 GR_GL_SRC1_ALPHA, 105 GR_GL_ONE_MINUS_SRC1_ALPHA, 106 }; 107 108 bool GrGLGpu::BlendCoeffReferencesConstant(GrBlendCoeff coeff) { 109 static const bool gCoeffReferencesBlendConst[] = { 110 false, 111 false, 112 false, 113 false, 114 false, 115 false, 116 false, 117 false, 118 false, 119 false, 120 true, 121 true, 122 true, 123 true, 124 125 // extended blend coeffs 126 false, 127 false, 128 false, 129 false, 130 }; 131 return gCoeffReferencesBlendConst[coeff]; 132 GR_STATIC_ASSERT(kGrBlendCoeffCnt == SK_ARRAY_COUNT(gCoeffReferencesBlendConst)); 133 134 GR_STATIC_ASSERT(0 == kZero_GrBlendCoeff); 135 GR_STATIC_ASSERT(1 == kOne_GrBlendCoeff); 136 GR_STATIC_ASSERT(2 == kSC_GrBlendCoeff); 137 GR_STATIC_ASSERT(3 == kISC_GrBlendCoeff); 138 GR_STATIC_ASSERT(4 == kDC_GrBlendCoeff); 139 GR_STATIC_ASSERT(5 == kIDC_GrBlendCoeff); 140 GR_STATIC_ASSERT(6 == kSA_GrBlendCoeff); 141 GR_STATIC_ASSERT(7 == kISA_GrBlendCoeff); 142 GR_STATIC_ASSERT(8 == kDA_GrBlendCoeff); 143 GR_STATIC_ASSERT(9 == kIDA_GrBlendCoeff); 144 GR_STATIC_ASSERT(10 == kConstC_GrBlendCoeff); 145 GR_STATIC_ASSERT(11 == kIConstC_GrBlendCoeff); 146 GR_STATIC_ASSERT(12 == kConstA_GrBlendCoeff); 147 GR_STATIC_ASSERT(13 == kIConstA_GrBlendCoeff); 148 149 GR_STATIC_ASSERT(14 == kS2C_GrBlendCoeff); 150 GR_STATIC_ASSERT(15 == kIS2C_GrBlendCoeff); 151 GR_STATIC_ASSERT(16 == kS2A_GrBlendCoeff); 152 GR_STATIC_ASSERT(17 == kIS2A_GrBlendCoeff); 153 154 // assertion for gXfermodeCoeff2Blend have to be in GrGpu scope 155 GR_STATIC_ASSERT(kGrBlendCoeffCnt == SK_ARRAY_COUNT(gXfermodeCoeff2Blend)); 156 } 157 158 /////////////////////////////////////////////////////////////////////////////// 159 160 static bool gPrintStartupSpew; 161 162 GrGLGpu::GrGLGpu(const GrGLContext& ctx, GrContext* context) 163 : GrGpu(context) 164 , fGLContext(ctx) { 165 166 SkASSERT(ctx.isInitialized()); 167 fCaps.reset(SkRef(ctx.caps())); 168 169 fHWBoundTextureUniqueIDs.reset(this->glCaps().maxFragmentTextureUnits()); 170 171 GrGLClearErr(fGLContext.interface()); 172 if (gPrintStartupSpew) { 173 const GrGLubyte* vendor; 174 const GrGLubyte* renderer; 175 const GrGLubyte* version; 176 GL_CALL_RET(vendor, GetString(GR_GL_VENDOR)); 177 GL_CALL_RET(renderer, GetString(GR_GL_RENDERER)); 178 GL_CALL_RET(version, GetString(GR_GL_VERSION)); 179 SkDebugf("------------------------- create GrGLGpu %p --------------\n", 180 this); 181 SkDebugf("------ VENDOR %s\n", vendor); 182 SkDebugf("------ RENDERER %s\n", renderer); 183 SkDebugf("------ VERSION %s\n", version); 184 SkDebugf("------ EXTENSIONS\n"); 185 ctx.extensions().print(); 186 SkDebugf("\n"); 187 SkDebugf("%s", this->glCaps().dump().c_str()); 188 } 189 190 fProgramCache = SkNEW_ARGS(ProgramCache, (this)); 191 192 SkASSERT(this->glCaps().maxVertexAttributes() >= GrGeometryProcessor::kMaxVertexAttribs); 193 194 fLastSuccessfulStencilFmtIdx = 0; 195 fHWProgramID = 0; 196 fTempSrcFBOID = 0; 197 fTempDstFBOID = 0; 198 fStencilClearFBOID = 0; 199 200 if (this->glCaps().shaderCaps()->pathRenderingSupport()) { 201 fPathRendering.reset(new GrGLPathRendering(this)); 202 } 203 } 204 205 GrGLGpu::~GrGLGpu() { 206 if (0 != fHWProgramID) { 207 // detach the current program so there is no confusion on OpenGL's part 208 // that we want it to be deleted 209 SkASSERT(fHWProgramID == fCurrentProgram->programID()); 210 GL_CALL(UseProgram(0)); 211 } 212 213 if (0 != fTempSrcFBOID) { 214 GL_CALL(DeleteFramebuffers(1, &fTempSrcFBOID)); 215 } 216 if (0 != fTempDstFBOID) { 217 GL_CALL(DeleteFramebuffers(1, &fTempDstFBOID)); 218 } 219 if (0 != fStencilClearFBOID) { 220 GL_CALL(DeleteFramebuffers(1, &fStencilClearFBOID)); 221 } 222 223 delete fProgramCache; 224 } 225 226 void GrGLGpu::contextAbandoned() { 227 INHERITED::contextAbandoned(); 228 fProgramCache->abandon(); 229 fHWProgramID = 0; 230 fTempSrcFBOID = 0; 231 fTempDstFBOID = 0; 232 fStencilClearFBOID = 0; 233 if (this->glCaps().shaderCaps()->pathRenderingSupport()) { 234 this->glPathRendering()->abandonGpuResources(); 235 } 236 } 237 238 /////////////////////////////////////////////////////////////////////////////// 239 GrPixelConfig GrGLGpu::preferredReadPixelsConfig(GrPixelConfig readConfig, 240 GrPixelConfig surfaceConfig) const { 241 if (GR_GL_RGBA_8888_PIXEL_OPS_SLOW && kRGBA_8888_GrPixelConfig == readConfig) { 242 return kBGRA_8888_GrPixelConfig; 243 } else if (this->glContext().isMesa() && 244 GrBytesPerPixel(readConfig) == 4 && 245 GrPixelConfigSwapRAndB(readConfig) == surfaceConfig) { 246 // Mesa 3D takes a slow path on when reading back BGRA from an RGBA surface and vice-versa. 247 // Perhaps this should be guarded by some compiletime or runtime check. 248 return surfaceConfig; 249 } else if (readConfig == kBGRA_8888_GrPixelConfig 250 && !this->glCaps().readPixelsSupported( 251 this->glInterface(), 252 GR_GL_BGRA, 253 GR_GL_UNSIGNED_BYTE, 254 surfaceConfig 255 )) { 256 return kRGBA_8888_GrPixelConfig; 257 } else { 258 return readConfig; 259 } 260 } 261 262 GrPixelConfig GrGLGpu::preferredWritePixelsConfig(GrPixelConfig writeConfig, 263 GrPixelConfig surfaceConfig) const { 264 if (GR_GL_RGBA_8888_PIXEL_OPS_SLOW && kRGBA_8888_GrPixelConfig == writeConfig) { 265 return kBGRA_8888_GrPixelConfig; 266 } else { 267 return writeConfig; 268 } 269 } 270 271 bool GrGLGpu::canWriteTexturePixels(const GrTexture* texture, GrPixelConfig srcConfig) const { 272 if (kIndex_8_GrPixelConfig == srcConfig || kIndex_8_GrPixelConfig == texture->config()) { 273 return false; 274 } 275 if (srcConfig != texture->config() && kGLES_GrGLStandard == this->glStandard()) { 276 // In general ES2 requires the internal format of the texture and the format of the src 277 // pixels to match. However, It may or may not be possible to upload BGRA data to a RGBA 278 // texture. It depends upon which extension added BGRA. The Apple extension allows it 279 // (BGRA's internal format is RGBA) while the EXT extension does not (BGRA is its own 280 // internal format). 281 if (this->glCaps().isConfigTexturable(kBGRA_8888_GrPixelConfig) && 282 !this->glCaps().bgraIsInternalFormat() && 283 kBGRA_8888_GrPixelConfig == srcConfig && 284 kRGBA_8888_GrPixelConfig == texture->config()) { 285 return true; 286 } else { 287 return false; 288 } 289 } else { 290 return true; 291 } 292 } 293 294 bool GrGLGpu::fullReadPixelsIsFasterThanPartial() const { 295 return SkToBool(GR_GL_FULL_READPIXELS_FASTER_THAN_PARTIAL); 296 } 297 298 void GrGLGpu::onResetContext(uint32_t resetBits) { 299 // we don't use the zb at all 300 if (resetBits & kMisc_GrGLBackendState) { 301 GL_CALL(Disable(GR_GL_DEPTH_TEST)); 302 GL_CALL(DepthMask(GR_GL_FALSE)); 303 304 fHWDrawFace = GrPipelineBuilder::kInvalid_DrawFace; 305 fHWDitherEnabled = kUnknown_TriState; 306 307 if (kGL_GrGLStandard == this->glStandard()) { 308 // Desktop-only state that we never change 309 if (!this->glCaps().isCoreProfile()) { 310 GL_CALL(Disable(GR_GL_POINT_SMOOTH)); 311 GL_CALL(Disable(GR_GL_LINE_SMOOTH)); 312 GL_CALL(Disable(GR_GL_POLYGON_SMOOTH)); 313 GL_CALL(Disable(GR_GL_POLYGON_STIPPLE)); 314 GL_CALL(Disable(GR_GL_COLOR_LOGIC_OP)); 315 GL_CALL(Disable(GR_GL_INDEX_LOGIC_OP)); 316 } 317 // The windows NVIDIA driver has GL_ARB_imaging in the extension string when using a 318 // core profile. This seems like a bug since the core spec removes any mention of 319 // GL_ARB_imaging. 320 if (this->glCaps().imagingSupport() && !this->glCaps().isCoreProfile()) { 321 GL_CALL(Disable(GR_GL_COLOR_TABLE)); 322 } 323 GL_CALL(Disable(GR_GL_POLYGON_OFFSET_FILL)); 324 // Since ES doesn't support glPointSize at all we always use the VS to 325 // set the point size 326 GL_CALL(Enable(GR_GL_VERTEX_PROGRAM_POINT_SIZE)); 327 328 // We should set glPolygonMode(FRONT_AND_BACK,FILL) here, too. It isn't 329 // currently part of our gl interface. There are probably others as 330 // well. 331 } 332 333 if (kGLES_GrGLStandard == this->glStandard() && 334 fGLContext.hasExtension("GL_ARM_shader_framebuffer_fetch")) { 335 // The arm extension requires specifically enabling MSAA fetching per sample. 336 // On some devices this may have a perf hit. Also multiple render targets are disabled 337 GL_CALL(Enable(GR_GL_FETCH_PER_SAMPLE_ARM)); 338 } 339 fHWWriteToColor = kUnknown_TriState; 340 // we only ever use lines in hairline mode 341 GL_CALL(LineWidth(1)); 342 } 343 344 if (resetBits & kMSAAEnable_GrGLBackendState) { 345 fMSAAEnabled = kUnknown_TriState; 346 } 347 348 fHWActiveTextureUnitIdx = -1; // invalid 349 350 if (resetBits & kTextureBinding_GrGLBackendState) { 351 for (int s = 0; s < fHWBoundTextureUniqueIDs.count(); ++s) { 352 fHWBoundTextureUniqueIDs[s] = SK_InvalidUniqueID; 353 } 354 } 355 356 if (resetBits & kBlend_GrGLBackendState) { 357 fHWBlendState.invalidate(); 358 } 359 360 if (resetBits & kView_GrGLBackendState) { 361 fHWScissorSettings.invalidate(); 362 fHWViewport.invalidate(); 363 } 364 365 if (resetBits & kStencil_GrGLBackendState) { 366 fHWStencilSettings.invalidate(); 367 fHWStencilTestEnabled = kUnknown_TriState; 368 } 369 370 // Vertex 371 if (resetBits & kVertex_GrGLBackendState) { 372 fHWGeometryState.invalidate(); 373 } 374 375 if (resetBits & kRenderTarget_GrGLBackendState) { 376 fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID; 377 } 378 379 if (resetBits & kPathRendering_GrGLBackendState) { 380 if (this->caps()->shaderCaps()->pathRenderingSupport()) { 381 this->glPathRendering()->resetContext(); 382 } 383 } 384 385 // we assume these values 386 if (resetBits & kPixelStore_GrGLBackendState) { 387 if (this->glCaps().unpackRowLengthSupport()) { 388 GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0)); 389 } 390 if (this->glCaps().packRowLengthSupport()) { 391 GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 0)); 392 } 393 if (this->glCaps().unpackFlipYSupport()) { 394 GL_CALL(PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_FALSE)); 395 } 396 if (this->glCaps().packFlipYSupport()) { 397 GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, GR_GL_FALSE)); 398 } 399 } 400 401 if (resetBits & kProgram_GrGLBackendState) { 402 fHWProgramID = 0; 403 } 404 } 405 406 static GrSurfaceOrigin resolve_origin(GrSurfaceOrigin origin, bool renderTarget) { 407 // By default, GrRenderTargets are GL's normal orientation so that they 408 // can be drawn to by the outside world without the client having 409 // to render upside down. 410 if (kDefault_GrSurfaceOrigin == origin) { 411 return renderTarget ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin; 412 } else { 413 return origin; 414 } 415 } 416 417 GrTexture* GrGLGpu::onWrapBackendTexture(const GrBackendTextureDesc& desc) { 418 if (!this->configToGLFormats(desc.fConfig, false, NULL, NULL, NULL)) { 419 return NULL; 420 } 421 422 if (0 == desc.fTextureHandle) { 423 return NULL; 424 } 425 426 int maxSize = this->caps()->maxTextureSize(); 427 if (desc.fWidth > maxSize || desc.fHeight > maxSize) { 428 return NULL; 429 } 430 431 GrGLTexture::IDDesc idDesc; 432 GrSurfaceDesc surfDesc; 433 434 idDesc.fTextureID = static_cast<GrGLuint>(desc.fTextureHandle); 435 idDesc.fLifeCycle = GrGpuResource::kWrapped_LifeCycle; 436 437 // next line relies on GrBackendTextureDesc's flags matching GrTexture's 438 surfDesc.fFlags = (GrSurfaceFlags) desc.fFlags; 439 surfDesc.fWidth = desc.fWidth; 440 surfDesc.fHeight = desc.fHeight; 441 surfDesc.fConfig = desc.fConfig; 442 surfDesc.fSampleCnt = SkTMin(desc.fSampleCnt, this->caps()->maxSampleCount()); 443 bool renderTarget = SkToBool(desc.fFlags & kRenderTarget_GrBackendTextureFlag); 444 // FIXME: this should be calling resolve_origin(), but Chrome code is currently 445 // assuming the old behaviour, which is that backend textures are always 446 // BottomLeft, even for non-RT's. Once Chrome is fixed, change this to: 447 // glTexDesc.fOrigin = resolve_origin(desc.fOrigin, renderTarget); 448 if (kDefault_GrSurfaceOrigin == desc.fOrigin) { 449 surfDesc.fOrigin = kBottomLeft_GrSurfaceOrigin; 450 } else { 451 surfDesc.fOrigin = desc.fOrigin; 452 } 453 454 GrGLTexture* texture = NULL; 455 if (renderTarget) { 456 GrGLRenderTarget::IDDesc rtIDDesc; 457 if (!this->createRenderTargetObjects(surfDesc, GrGpuResource::kUncached_LifeCycle, 458 idDesc.fTextureID, &rtIDDesc)) { 459 return NULL; 460 } 461 texture = SkNEW_ARGS(GrGLTextureRenderTarget, (this, surfDesc, idDesc, rtIDDesc)); 462 } else { 463 texture = SkNEW_ARGS(GrGLTexture, (this, surfDesc, idDesc)); 464 } 465 if (NULL == texture) { 466 return NULL; 467 } 468 469 return texture; 470 } 471 472 GrRenderTarget* GrGLGpu::onWrapBackendRenderTarget(const GrBackendRenderTargetDesc& wrapDesc) { 473 GrGLRenderTarget::IDDesc idDesc; 474 idDesc.fRTFBOID = static_cast<GrGLuint>(wrapDesc.fRenderTargetHandle); 475 idDesc.fMSColorRenderbufferID = 0; 476 idDesc.fTexFBOID = GrGLRenderTarget::kUnresolvableFBOID; 477 idDesc.fLifeCycle = GrGpuResource::kWrapped_LifeCycle; 478 479 GrSurfaceDesc desc; 480 desc.fConfig = wrapDesc.fConfig; 481 desc.fFlags = kCheckAllocation_GrSurfaceFlag; 482 desc.fWidth = wrapDesc.fWidth; 483 desc.fHeight = wrapDesc.fHeight; 484 desc.fSampleCnt = SkTMin(wrapDesc.fSampleCnt, this->caps()->maxSampleCount()); 485 desc.fOrigin = resolve_origin(wrapDesc.fOrigin, true); 486 487 GrRenderTarget* tgt = SkNEW_ARGS(GrGLRenderTarget, (this, desc, idDesc)); 488 if (wrapDesc.fStencilBits) { 489 GrGLStencilAttachment::IDDesc sbDesc; 490 GrGLStencilAttachment::Format format; 491 format.fInternalFormat = GrGLStencilAttachment::kUnknownInternalFormat; 492 format.fPacked = false; 493 format.fStencilBits = wrapDesc.fStencilBits; 494 format.fTotalBits = wrapDesc.fStencilBits; 495 GrGLStencilAttachment* sb = SkNEW_ARGS(GrGLStencilAttachment, 496 (this, 497 sbDesc, 498 desc.fWidth, 499 desc.fHeight, 500 desc.fSampleCnt, 501 format)); 502 tgt->renderTargetPriv().didAttachStencilAttachment(sb); 503 sb->unref(); 504 } 505 return tgt; 506 } 507 508 //////////////////////////////////////////////////////////////////////////////// 509 510 bool GrGLGpu::onWriteTexturePixels(GrTexture* texture, 511 int left, int top, int width, int height, 512 GrPixelConfig config, const void* buffer, 513 size_t rowBytes) { 514 if (NULL == buffer) { 515 return false; 516 } 517 GrGLTexture* glTex = static_cast<GrGLTexture*>(texture); 518 519 this->setScratchTextureUnit(); 520 GL_CALL(BindTexture(GR_GL_TEXTURE_2D, glTex->textureID())); 521 522 bool success = false; 523 if (GrPixelConfigIsCompressed(glTex->desc().fConfig)) { 524 // We check that config == desc.fConfig in GrGLGpu::canWriteTexturePixels() 525 SkASSERT(config == glTex->desc().fConfig); 526 success = this->uploadCompressedTexData(glTex->desc(), buffer, false, left, top, width, 527 height); 528 } else { 529 success = this->uploadTexData(glTex->desc(), false, left, top, width, height, config, 530 buffer, rowBytes); 531 } 532 533 if (success) { 534 texture->texturePriv().dirtyMipMaps(true); 535 return true; 536 } 537 538 return false; 539 } 540 541 static bool adjust_pixel_ops_params(int surfaceWidth, 542 int surfaceHeight, 543 size_t bpp, 544 int* left, int* top, int* width, int* height, 545 const void** data, 546 size_t* rowBytes) { 547 if (!*rowBytes) { 548 *rowBytes = *width * bpp; 549 } 550 551 SkIRect subRect = SkIRect::MakeXYWH(*left, *top, *width, *height); 552 SkIRect bounds = SkIRect::MakeWH(surfaceWidth, surfaceHeight); 553 554 if (!subRect.intersect(bounds)) { 555 return false; 556 } 557 *data = reinterpret_cast<const void*>(reinterpret_cast<intptr_t>(*data) + 558 (subRect.fTop - *top) * *rowBytes + (subRect.fLeft - *left) * bpp); 559 560 *left = subRect.fLeft; 561 *top = subRect.fTop; 562 *width = subRect.width(); 563 *height = subRect.height(); 564 return true; 565 } 566 567 static inline GrGLenum check_alloc_error(const GrSurfaceDesc& desc, 568 const GrGLInterface* interface) { 569 if (SkToBool(desc.fFlags & kCheckAllocation_GrSurfaceFlag)) { 570 return GR_GL_GET_ERROR(interface); 571 } else { 572 return CHECK_ALLOC_ERROR(interface); 573 } 574 } 575 576 bool GrGLGpu::uploadTexData(const GrSurfaceDesc& desc, 577 bool isNewTexture, 578 int left, int top, int width, int height, 579 GrPixelConfig dataConfig, 580 const void* data, 581 size_t rowBytes) { 582 SkASSERT(data || isNewTexture); 583 584 // If we're uploading compressed data then we should be using uploadCompressedTexData 585 SkASSERT(!GrPixelConfigIsCompressed(dataConfig)); 586 587 size_t bpp = GrBytesPerPixel(dataConfig); 588 if (!adjust_pixel_ops_params(desc.fWidth, desc.fHeight, bpp, &left, &top, 589 &width, &height, &data, &rowBytes)) { 590 return false; 591 } 592 size_t trimRowBytes = width * bpp; 593 594 // in case we need a temporary, trimmed copy of the src pixels 595 GrAutoMalloc<128 * 128> tempStorage; 596 597 // We currently lazily create MIPMAPs when the we see a draw with 598 // GrTextureParams::kMipMap_FilterMode. Using texture storage requires that the 599 // MIP levels are all created when the texture is created. So for now we don't use 600 // texture storage. 601 bool useTexStorage = false && 602 isNewTexture && 603 this->glCaps().texStorageSupport(); 604 605 if (useTexStorage && kGL_GrGLStandard == this->glStandard()) { 606 // 565 is not a sized internal format on desktop GL. So on desktop with 607 // 565 we always use an unsized internal format to let the system pick 608 // the best sized format to convert the 565 data to. Since TexStorage 609 // only allows sized internal formats we will instead use TexImage2D. 610 useTexStorage = desc.fConfig != kRGB_565_GrPixelConfig; 611 } 612 613 GrGLenum internalFormat = 0x0; // suppress warning 614 GrGLenum externalFormat = 0x0; // suppress warning 615 GrGLenum externalType = 0x0; // suppress warning 616 617 // glTexStorage requires sized internal formats on both desktop and ES. ES2 requires an unsized 618 // format for glTexImage, unlike ES3 and desktop. 619 bool useSizedFormat = useTexStorage; 620 if (kGL_GrGLStandard == this->glStandard() || 621 (this->glVersion() >= GR_GL_VER(3, 0) && 622 // ES3 only works with sized BGRA8 format if "GL_APPLE_texture_format_BGRA8888" enabled 623 (kBGRA_8888_GrPixelConfig != dataConfig || !this->glCaps().bgraIsInternalFormat()))) { 624 useSizedFormat = true; 625 } 626 627 if (!this->configToGLFormats(dataConfig, useSizedFormat, &internalFormat, 628 &externalFormat, &externalType)) { 629 return false; 630 } 631 632 /* 633 * check whether to allocate a temporary buffer for flipping y or 634 * because our srcData has extra bytes past each row. If so, we need 635 * to trim those off here, since GL ES may not let us specify 636 * GL_UNPACK_ROW_LENGTH. 637 */ 638 bool restoreGLRowLength = false; 639 bool swFlipY = false; 640 bool glFlipY = false; 641 if (data) { 642 if (kBottomLeft_GrSurfaceOrigin == desc.fOrigin) { 643 if (this->glCaps().unpackFlipYSupport()) { 644 glFlipY = true; 645 } else { 646 swFlipY = true; 647 } 648 } 649 if (this->glCaps().unpackRowLengthSupport() && !swFlipY) { 650 // can't use this for flipping, only non-neg values allowed. :( 651 if (rowBytes != trimRowBytes) { 652 GrGLint rowLength = static_cast<GrGLint>(rowBytes / bpp); 653 GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, rowLength)); 654 restoreGLRowLength = true; 655 } 656 } else { 657 if (trimRowBytes != rowBytes || swFlipY) { 658 // copy data into our new storage, skipping the trailing bytes 659 size_t trimSize = height * trimRowBytes; 660 const char* src = (const char*)data; 661 if (swFlipY) { 662 src += (height - 1) * rowBytes; 663 } 664 char* dst = (char*)tempStorage.reset(trimSize); 665 for (int y = 0; y < height; y++) { 666 memcpy(dst, src, trimRowBytes); 667 if (swFlipY) { 668 src -= rowBytes; 669 } else { 670 src += rowBytes; 671 } 672 dst += trimRowBytes; 673 } 674 // now point data to our copied version 675 data = tempStorage.get(); 676 } 677 } 678 if (glFlipY) { 679 GL_CALL(PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_TRUE)); 680 } 681 GL_CALL(PixelStorei(GR_GL_UNPACK_ALIGNMENT, 682 static_cast<GrGLint>(GrUnpackAlignment(dataConfig)))); 683 } 684 bool succeeded = true; 685 if (isNewTexture && 686 0 == left && 0 == top && 687 desc.fWidth == width && desc.fHeight == height) { 688 CLEAR_ERROR_BEFORE_ALLOC(this->glInterface()); 689 if (useTexStorage) { 690 // We never resize or change formats of textures. 691 GL_ALLOC_CALL(this->glInterface(), 692 TexStorage2D(GR_GL_TEXTURE_2D, 693 1, // levels 694 internalFormat, 695 desc.fWidth, desc.fHeight)); 696 } else { 697 GL_ALLOC_CALL(this->glInterface(), 698 TexImage2D(GR_GL_TEXTURE_2D, 699 0, // level 700 internalFormat, 701 desc.fWidth, desc.fHeight, 702 0, // border 703 externalFormat, externalType, 704 data)); 705 } 706 GrGLenum error = check_alloc_error(desc, this->glInterface()); 707 if (error != GR_GL_NO_ERROR) { 708 succeeded = false; 709 } else { 710 // if we have data and we used TexStorage to create the texture, we 711 // now upload with TexSubImage. 712 if (data && useTexStorage) { 713 GL_CALL(TexSubImage2D(GR_GL_TEXTURE_2D, 714 0, // level 715 left, top, 716 width, height, 717 externalFormat, externalType, 718 data)); 719 } 720 } 721 } else { 722 if (swFlipY || glFlipY) { 723 top = desc.fHeight - (top + height); 724 } 725 GL_CALL(TexSubImage2D(GR_GL_TEXTURE_2D, 726 0, // level 727 left, top, 728 width, height, 729 externalFormat, externalType, data)); 730 } 731 732 if (restoreGLRowLength) { 733 SkASSERT(this->glCaps().unpackRowLengthSupport()); 734 GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0)); 735 } 736 if (glFlipY) { 737 GL_CALL(PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_FALSE)); 738 } 739 return succeeded; 740 } 741 742 // TODO: This function is using a lot of wonky semantics like, if width == -1 743 // then set width = desc.fWdith ... blah. A better way to do it might be to 744 // create a CompressedTexData struct that takes a desc/ptr and figures out 745 // the proper upload semantics. Then users can construct this function how they 746 // see fit if they want to go against the "standard" way to do it. 747 bool GrGLGpu::uploadCompressedTexData(const GrSurfaceDesc& desc, 748 const void* data, 749 bool isNewTexture, 750 int left, int top, int width, int height) { 751 SkASSERT(data || isNewTexture); 752 753 // No support for software flip y, yet... 754 SkASSERT(kBottomLeft_GrSurfaceOrigin != desc.fOrigin); 755 756 if (-1 == width) { 757 width = desc.fWidth; 758 } 759 #ifdef SK_DEBUG 760 else { 761 SkASSERT(width <= desc.fWidth); 762 } 763 #endif 764 765 if (-1 == height) { 766 height = desc.fHeight; 767 } 768 #ifdef SK_DEBUG 769 else { 770 SkASSERT(height <= desc.fHeight); 771 } 772 #endif 773 774 // Make sure that the width and height that we pass to OpenGL 775 // is a multiple of the block size. 776 size_t dataSize = GrCompressedFormatDataSize(desc.fConfig, width, height); 777 778 // We only need the internal format for compressed 2D textures. 779 GrGLenum internalFormat = 0; 780 if (!this->configToGLFormats(desc.fConfig, false, &internalFormat, NULL, NULL)) { 781 return false; 782 } 783 784 if (isNewTexture) { 785 CLEAR_ERROR_BEFORE_ALLOC(this->glInterface()); 786 GL_ALLOC_CALL(this->glInterface(), 787 CompressedTexImage2D(GR_GL_TEXTURE_2D, 788 0, // level 789 internalFormat, 790 width, height, 791 0, // border 792 SkToInt(dataSize), 793 data)); 794 GrGLenum error = check_alloc_error(desc, this->glInterface()); 795 if (error != GR_GL_NO_ERROR) { 796 return false; 797 } 798 } else { 799 // Paletted textures can't be updated. 800 if (GR_GL_PALETTE8_RGBA8 == internalFormat) { 801 return false; 802 } 803 GL_CALL(CompressedTexSubImage2D(GR_GL_TEXTURE_2D, 804 0, // level 805 left, top, 806 width, height, 807 internalFormat, 808 SkToInt(dataSize), 809 data)); 810 } 811 812 return true; 813 } 814 815 static bool renderbuffer_storage_msaa(GrGLContext& ctx, 816 int sampleCount, 817 GrGLenum format, 818 int width, int height) { 819 CLEAR_ERROR_BEFORE_ALLOC(ctx.interface()); 820 SkASSERT(GrGLCaps::kNone_MSFBOType != ctx.caps()->msFBOType()); 821 switch (ctx.caps()->msFBOType()) { 822 case GrGLCaps::kDesktop_ARB_MSFBOType: 823 case GrGLCaps::kDesktop_EXT_MSFBOType: 824 case GrGLCaps::kES_3_0_MSFBOType: 825 GL_ALLOC_CALL(ctx.interface(), 826 RenderbufferStorageMultisample(GR_GL_RENDERBUFFER, 827 sampleCount, 828 format, 829 width, height)); 830 break; 831 case GrGLCaps::kES_Apple_MSFBOType: 832 GL_ALLOC_CALL(ctx.interface(), 833 RenderbufferStorageMultisampleES2APPLE(GR_GL_RENDERBUFFER, 834 sampleCount, 835 format, 836 width, height)); 837 break; 838 case GrGLCaps::kES_EXT_MsToTexture_MSFBOType: 839 case GrGLCaps::kES_IMG_MsToTexture_MSFBOType: 840 GL_ALLOC_CALL(ctx.interface(), 841 RenderbufferStorageMultisampleES2EXT(GR_GL_RENDERBUFFER, 842 sampleCount, 843 format, 844 width, height)); 845 break; 846 case GrGLCaps::kNone_MSFBOType: 847 SkFAIL("Shouldn't be here if we don't support multisampled renderbuffers."); 848 break; 849 } 850 return (GR_GL_NO_ERROR == CHECK_ALLOC_ERROR(ctx.interface())); 851 } 852 853 bool GrGLGpu::createRenderTargetObjects(const GrSurfaceDesc& desc, 854 GrGpuResource::LifeCycle lifeCycle, 855 GrGLuint texID, 856 GrGLRenderTarget::IDDesc* idDesc) { 857 idDesc->fMSColorRenderbufferID = 0; 858 idDesc->fRTFBOID = 0; 859 idDesc->fTexFBOID = 0; 860 idDesc->fLifeCycle = lifeCycle; 861 862 GrGLenum status; 863 864 GrGLenum msColorFormat = 0; // suppress warning 865 866 if (desc.fSampleCnt > 0 && GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType()) { 867 goto FAILED; 868 } 869 870 GL_CALL(GenFramebuffers(1, &idDesc->fTexFBOID)); 871 if (!idDesc->fTexFBOID) { 872 goto FAILED; 873 } 874 875 876 // If we are using multisampling we will create two FBOS. We render to one and then resolve to 877 // the texture bound to the other. The exception is the IMG multisample extension. With this 878 // extension the texture is multisampled when rendered to and then auto-resolves it when it is 879 // rendered from. 880 if (desc.fSampleCnt > 0 && this->glCaps().usesMSAARenderBuffers()) { 881 GL_CALL(GenFramebuffers(1, &idDesc->fRTFBOID)); 882 GL_CALL(GenRenderbuffers(1, &idDesc->fMSColorRenderbufferID)); 883 if (!idDesc->fRTFBOID || 884 !idDesc->fMSColorRenderbufferID || 885 !this->configToGLFormats(desc.fConfig, 886 // ES2 and ES3 require sized internal formats for rb storage. 887 kGLES_GrGLStandard == this->glStandard(), 888 &msColorFormat, 889 NULL, 890 NULL)) { 891 goto FAILED; 892 } 893 } else { 894 idDesc->fRTFBOID = idDesc->fTexFBOID; 895 } 896 897 // below here we may bind the FBO 898 fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID; 899 if (idDesc->fRTFBOID != idDesc->fTexFBOID) { 900 SkASSERT(desc.fSampleCnt > 0); 901 GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, idDesc->fMSColorRenderbufferID)); 902 if (!renderbuffer_storage_msaa(fGLContext, 903 desc.fSampleCnt, 904 msColorFormat, 905 desc.fWidth, desc.fHeight)) { 906 goto FAILED; 907 } 908 fStats.incRenderTargetBinds(); 909 GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, idDesc->fRTFBOID)); 910 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 911 GR_GL_COLOR_ATTACHMENT0, 912 GR_GL_RENDERBUFFER, 913 idDesc->fMSColorRenderbufferID)); 914 if ((desc.fFlags & kCheckAllocation_GrSurfaceFlag) || 915 !this->glCaps().isConfigVerifiedColorAttachment(desc.fConfig)) { 916 GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); 917 if (status != GR_GL_FRAMEBUFFER_COMPLETE) { 918 goto FAILED; 919 } 920 fGLContext.caps()->markConfigAsValidColorAttachment(desc.fConfig); 921 } 922 } 923 fStats.incRenderTargetBinds(); 924 GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, idDesc->fTexFBOID)); 925 926 if (this->glCaps().usesImplicitMSAAResolve() && desc.fSampleCnt > 0) { 927 GL_CALL(FramebufferTexture2DMultisample(GR_GL_FRAMEBUFFER, 928 GR_GL_COLOR_ATTACHMENT0, 929 GR_GL_TEXTURE_2D, 930 texID, 0, desc.fSampleCnt)); 931 } else { 932 GL_CALL(FramebufferTexture2D(GR_GL_FRAMEBUFFER, 933 GR_GL_COLOR_ATTACHMENT0, 934 GR_GL_TEXTURE_2D, 935 texID, 0)); 936 } 937 if ((desc.fFlags & kCheckAllocation_GrSurfaceFlag) || 938 !this->glCaps().isConfigVerifiedColorAttachment(desc.fConfig)) { 939 GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); 940 if (status != GR_GL_FRAMEBUFFER_COMPLETE) { 941 goto FAILED; 942 } 943 fGLContext.caps()->markConfigAsValidColorAttachment(desc.fConfig); 944 } 945 946 return true; 947 948 FAILED: 949 if (idDesc->fMSColorRenderbufferID) { 950 GL_CALL(DeleteRenderbuffers(1, &idDesc->fMSColorRenderbufferID)); 951 } 952 if (idDesc->fRTFBOID != idDesc->fTexFBOID) { 953 GL_CALL(DeleteFramebuffers(1, &idDesc->fRTFBOID)); 954 } 955 if (idDesc->fTexFBOID) { 956 GL_CALL(DeleteFramebuffers(1, &idDesc->fTexFBOID)); 957 } 958 return false; 959 } 960 961 // good to set a break-point here to know when createTexture fails 962 static GrTexture* return_null_texture() { 963 // SkDEBUGFAIL("null texture"); 964 return NULL; 965 } 966 967 #if 0 && defined(SK_DEBUG) 968 static size_t as_size_t(int x) { 969 return x; 970 } 971 #endif 972 973 GrTexture* GrGLGpu::onCreateTexture(const GrSurfaceDesc& desc, 974 GrGpuResource::LifeCycle lifeCycle, 975 const void* srcData, size_t rowBytes) { 976 // We fail if the MSAA was requested and is not available. 977 if (GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType() && desc.fSampleCnt) { 978 //SkDebugf("MSAA RT requested but not supported on this platform."); 979 return return_null_texture(); 980 } 981 982 bool renderTarget = SkToBool(desc.fFlags & kRenderTarget_GrSurfaceFlag); 983 984 GrGLTexture::IDDesc idDesc; 985 GL_CALL(GenTextures(1, &idDesc.fTextureID)); 986 idDesc.fLifeCycle = lifeCycle; 987 988 if (!idDesc.fTextureID) { 989 return return_null_texture(); 990 } 991 992 this->setScratchTextureUnit(); 993 GL_CALL(BindTexture(GR_GL_TEXTURE_2D, idDesc.fTextureID)); 994 995 if (renderTarget && this->glCaps().textureUsageSupport()) { 996 // provides a hint about how this texture will be used 997 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 998 GR_GL_TEXTURE_USAGE, 999 GR_GL_FRAMEBUFFER_ATTACHMENT)); 1000 } 1001 1002 // Some drivers like to know filter/wrap before seeing glTexImage2D. Some 1003 // drivers have a bug where an FBO won't be complete if it includes a 1004 // texture that is not mipmap complete (considering the filter in use). 1005 GrGLTexture::TexParams initialTexParams; 1006 // we only set a subset here so invalidate first 1007 initialTexParams.invalidate(); 1008 initialTexParams.fMinFilter = GR_GL_NEAREST; 1009 initialTexParams.fMagFilter = GR_GL_NEAREST; 1010 initialTexParams.fWrapS = GR_GL_CLAMP_TO_EDGE; 1011 initialTexParams.fWrapT = GR_GL_CLAMP_TO_EDGE; 1012 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 1013 GR_GL_TEXTURE_MAG_FILTER, 1014 initialTexParams.fMagFilter)); 1015 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 1016 GR_GL_TEXTURE_MIN_FILTER, 1017 initialTexParams.fMinFilter)); 1018 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 1019 GR_GL_TEXTURE_WRAP_S, 1020 initialTexParams.fWrapS)); 1021 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 1022 GR_GL_TEXTURE_WRAP_T, 1023 initialTexParams.fWrapT)); 1024 if (!this->uploadTexData(desc, true, 0, 0, 1025 desc.fWidth, desc.fHeight, 1026 desc.fConfig, srcData, rowBytes)) { 1027 GL_CALL(DeleteTextures(1, &idDesc.fTextureID)); 1028 return return_null_texture(); 1029 } 1030 1031 GrGLTexture* tex; 1032 if (renderTarget) { 1033 // unbind the texture from the texture unit before binding it to the frame buffer 1034 GL_CALL(BindTexture(GR_GL_TEXTURE_2D, 0)); 1035 GrGLRenderTarget::IDDesc rtIDDesc; 1036 1037 if (!this->createRenderTargetObjects(desc, lifeCycle, idDesc.fTextureID, &rtIDDesc)) { 1038 GL_CALL(DeleteTextures(1, &idDesc.fTextureID)); 1039 return return_null_texture(); 1040 } 1041 tex = SkNEW_ARGS(GrGLTextureRenderTarget, (this, desc, idDesc, rtIDDesc)); 1042 } else { 1043 tex = SkNEW_ARGS(GrGLTexture, (this, desc, idDesc)); 1044 } 1045 tex->setCachedTexParams(initialTexParams, this->getResetTimestamp()); 1046 #ifdef TRACE_TEXTURE_CREATION 1047 SkDebugf("--- new texture [%d] size=(%d %d) config=%d\n", 1048 glTexDesc.fTextureID, desc.fWidth, desc.fHeight, desc.fConfig); 1049 #endif 1050 return tex; 1051 } 1052 1053 GrTexture* GrGLGpu::onCreateCompressedTexture(const GrSurfaceDesc& desc, 1054 GrGpuResource::LifeCycle lifeCycle, 1055 const void* srcData) { 1056 // Make sure that we're not flipping Y. 1057 if (kBottomLeft_GrSurfaceOrigin == desc.fOrigin) { 1058 return return_null_texture(); 1059 } 1060 1061 GrGLTexture::IDDesc idDesc; 1062 GL_CALL(GenTextures(1, &idDesc.fTextureID)); 1063 idDesc.fLifeCycle = lifeCycle; 1064 1065 if (!idDesc.fTextureID) { 1066 return return_null_texture(); 1067 } 1068 1069 this->setScratchTextureUnit(); 1070 GL_CALL(BindTexture(GR_GL_TEXTURE_2D, idDesc.fTextureID)); 1071 1072 // Some drivers like to know filter/wrap before seeing glTexImage2D. Some 1073 // drivers have a bug where an FBO won't be complete if it includes a 1074 // texture that is not mipmap complete (considering the filter in use). 1075 GrGLTexture::TexParams initialTexParams; 1076 // we only set a subset here so invalidate first 1077 initialTexParams.invalidate(); 1078 initialTexParams.fMinFilter = GR_GL_NEAREST; 1079 initialTexParams.fMagFilter = GR_GL_NEAREST; 1080 initialTexParams.fWrapS = GR_GL_CLAMP_TO_EDGE; 1081 initialTexParams.fWrapT = GR_GL_CLAMP_TO_EDGE; 1082 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 1083 GR_GL_TEXTURE_MAG_FILTER, 1084 initialTexParams.fMagFilter)); 1085 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 1086 GR_GL_TEXTURE_MIN_FILTER, 1087 initialTexParams.fMinFilter)); 1088 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 1089 GR_GL_TEXTURE_WRAP_S, 1090 initialTexParams.fWrapS)); 1091 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 1092 GR_GL_TEXTURE_WRAP_T, 1093 initialTexParams.fWrapT)); 1094 1095 if (!this->uploadCompressedTexData(desc, srcData)) { 1096 GL_CALL(DeleteTextures(1, &idDesc.fTextureID)); 1097 return return_null_texture(); 1098 } 1099 1100 GrGLTexture* tex; 1101 tex = SkNEW_ARGS(GrGLTexture, (this, desc, idDesc)); 1102 tex->setCachedTexParams(initialTexParams, this->getResetTimestamp()); 1103 #ifdef TRACE_TEXTURE_CREATION 1104 SkDebugf("--- new compressed texture [%d] size=(%d %d) config=%d\n", 1105 glTexDesc.fTextureID, desc.fWidth, desc.fHeight, desc.fConfig); 1106 #endif 1107 return tex; 1108 } 1109 1110 namespace { 1111 1112 const GrGLuint kUnknownBitCount = GrGLStencilAttachment::kUnknownBitCount; 1113 1114 void inline get_stencil_rb_sizes(const GrGLInterface* gl, 1115 GrGLStencilAttachment::Format* format) { 1116 1117 // we shouldn't ever know one size and not the other 1118 SkASSERT((kUnknownBitCount == format->fStencilBits) == 1119 (kUnknownBitCount == format->fTotalBits)); 1120 if (kUnknownBitCount == format->fStencilBits) { 1121 GR_GL_GetRenderbufferParameteriv(gl, GR_GL_RENDERBUFFER, 1122 GR_GL_RENDERBUFFER_STENCIL_SIZE, 1123 (GrGLint*)&format->fStencilBits); 1124 if (format->fPacked) { 1125 GR_GL_GetRenderbufferParameteriv(gl, GR_GL_RENDERBUFFER, 1126 GR_GL_RENDERBUFFER_DEPTH_SIZE, 1127 (GrGLint*)&format->fTotalBits); 1128 format->fTotalBits += format->fStencilBits; 1129 } else { 1130 format->fTotalBits = format->fStencilBits; 1131 } 1132 } 1133 } 1134 } 1135 1136 bool GrGLGpu::createStencilAttachmentForRenderTarget(GrRenderTarget* rt, int width, int height) { 1137 // All internally created RTs are also textures. We don't create 1138 // SBs for a client's standalone RT (that is a RT that isn't also a texture). 1139 SkASSERT(rt->asTexture()); 1140 SkASSERT(width >= rt->width()); 1141 SkASSERT(height >= rt->height()); 1142 1143 int samples = rt->numSamples(); 1144 GrGLStencilAttachment::IDDesc sbDesc; 1145 1146 int stencilFmtCnt = this->glCaps().stencilFormats().count(); 1147 for (int i = 0; i < stencilFmtCnt; ++i) { 1148 if (!sbDesc.fRenderbufferID) { 1149 GL_CALL(GenRenderbuffers(1, &sbDesc.fRenderbufferID)); 1150 } 1151 if (!sbDesc.fRenderbufferID) { 1152 return false; 1153 } 1154 GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, sbDesc.fRenderbufferID)); 1155 // we start with the last stencil format that succeeded in hopes 1156 // that we won't go through this loop more than once after the 1157 // first (painful) stencil creation. 1158 int sIdx = (i + fLastSuccessfulStencilFmtIdx) % stencilFmtCnt; 1159 const GrGLCaps::StencilFormat& sFmt = this->glCaps().stencilFormats()[sIdx]; 1160 CLEAR_ERROR_BEFORE_ALLOC(this->glInterface()); 1161 // we do this "if" so that we don't call the multisample 1162 // version on a GL that doesn't have an MSAA extension. 1163 bool created; 1164 if (samples > 0) { 1165 created = renderbuffer_storage_msaa(fGLContext, 1166 samples, 1167 sFmt.fInternalFormat, 1168 width, height); 1169 } else { 1170 GL_ALLOC_CALL(this->glInterface(), RenderbufferStorage(GR_GL_RENDERBUFFER, 1171 sFmt.fInternalFormat, 1172 width, height)); 1173 created = (GR_GL_NO_ERROR == check_alloc_error(rt->desc(), this->glInterface())); 1174 } 1175 if (created) { 1176 fStats.incStencilAttachmentCreates(); 1177 // After sized formats we attempt an unsized format and take 1178 // whatever sizes GL gives us. In that case we query for the size. 1179 GrGLStencilAttachment::Format format = sFmt; 1180 get_stencil_rb_sizes(this->glInterface(), &format); 1181 SkAutoTUnref<GrGLStencilAttachment> sb(SkNEW_ARGS(GrGLStencilAttachment, 1182 (this, sbDesc, width, height, samples, format))); 1183 if (this->attachStencilAttachmentToRenderTarget(sb, rt)) { 1184 fLastSuccessfulStencilFmtIdx = sIdx; 1185 rt->renderTargetPriv().didAttachStencilAttachment(sb); 1186 // This work around is currently breaking on windows 7 hd2000 bot when we bind a color buffer 1187 #if 0 1188 // Clear the stencil buffer. We use a special purpose FBO for this so that the 1189 // entire stencil buffer is cleared, even if it is attached to an FBO with a 1190 // smaller color target. 1191 if (0 == fStencilClearFBOID) { 1192 GL_CALL(GenFramebuffers(1, &fStencilClearFBOID)); 1193 } 1194 1195 GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, fStencilClearFBOID)); 1196 fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID; 1197 fStats.incRenderTargetBinds(); 1198 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1199 GR_GL_STENCIL_ATTACHMENT, 1200 GR_GL_RENDERBUFFER, sbDesc.fRenderbufferID)); 1201 if (sFmt.fPacked) { 1202 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1203 GR_GL_DEPTH_ATTACHMENT, 1204 GR_GL_RENDERBUFFER, sbDesc.fRenderbufferID)); 1205 } 1206 1207 GL_CALL(ClearStencil(0)); 1208 // Many GL implementations seem to have trouble with clearing an FBO with only 1209 // a stencil buffer. 1210 GrGLuint tempRB; 1211 GL_CALL(GenRenderbuffers(1, &tempRB)); 1212 GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, tempRB)); 1213 if (samples > 0) { 1214 renderbuffer_storage_msaa(fGLContext, samples, GR_GL_RGBA8, width, height); 1215 } else { 1216 GL_CALL(RenderbufferStorage(GR_GL_RENDERBUFFER, GR_GL_RGBA8, width, height)); 1217 } 1218 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1219 GR_GL_COLOR_ATTACHMENT0, 1220 GR_GL_RENDERBUFFER, tempRB)); 1221 1222 GL_CALL(Clear(GR_GL_STENCIL_BUFFER_BIT)); 1223 1224 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1225 GR_GL_COLOR_ATTACHMENT0, 1226 GR_GL_RENDERBUFFER, 0)); 1227 GL_CALL(DeleteRenderbuffers(1, &tempRB)); 1228 1229 // Unbind the SB from the FBO so that we don't keep it alive. 1230 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1231 GR_GL_STENCIL_ATTACHMENT, 1232 GR_GL_RENDERBUFFER, 0)); 1233 if (sFmt.fPacked) { 1234 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1235 GR_GL_DEPTH_ATTACHMENT, 1236 GR_GL_RENDERBUFFER, 0)); 1237 } 1238 #endif 1239 return true; 1240 } 1241 // Remove the scratch key from this resource so we don't grab it from the cache ever 1242 // again. 1243 sb->resourcePriv().removeScratchKey(); 1244 // Set this to 0 since we handed the valid ID off to the failed stencil buffer resource. 1245 sbDesc.fRenderbufferID = 0; 1246 } 1247 } 1248 GL_CALL(DeleteRenderbuffers(1, &sbDesc.fRenderbufferID)); 1249 return false; 1250 } 1251 1252 bool GrGLGpu::attachStencilAttachmentToRenderTarget(GrStencilAttachment* sb, GrRenderTarget* rt) { 1253 GrGLRenderTarget* glrt = static_cast<GrGLRenderTarget*>(rt); 1254 1255 GrGLuint fbo = glrt->renderFBOID(); 1256 1257 if (NULL == sb) { 1258 if (rt->renderTargetPriv().getStencilAttachment()) { 1259 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1260 GR_GL_STENCIL_ATTACHMENT, 1261 GR_GL_RENDERBUFFER, 0)); 1262 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1263 GR_GL_DEPTH_ATTACHMENT, 1264 GR_GL_RENDERBUFFER, 0)); 1265 #ifdef SK_DEBUG 1266 GrGLenum status; 1267 GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); 1268 SkASSERT(GR_GL_FRAMEBUFFER_COMPLETE == status); 1269 #endif 1270 } 1271 return true; 1272 } else { 1273 GrGLStencilAttachment* glsb = static_cast<GrGLStencilAttachment*>(sb); 1274 GrGLuint rb = glsb->renderbufferID(); 1275 1276 fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID; 1277 fStats.incRenderTargetBinds(); 1278 GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, fbo)); 1279 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1280 GR_GL_STENCIL_ATTACHMENT, 1281 GR_GL_RENDERBUFFER, rb)); 1282 if (glsb->format().fPacked) { 1283 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1284 GR_GL_DEPTH_ATTACHMENT, 1285 GR_GL_RENDERBUFFER, rb)); 1286 } else { 1287 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1288 GR_GL_DEPTH_ATTACHMENT, 1289 GR_GL_RENDERBUFFER, 0)); 1290 } 1291 1292 GrGLenum status; 1293 if (!this->glCaps().isColorConfigAndStencilFormatVerified(rt->config(), glsb->format())) { 1294 GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); 1295 if (status != GR_GL_FRAMEBUFFER_COMPLETE) { 1296 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1297 GR_GL_STENCIL_ATTACHMENT, 1298 GR_GL_RENDERBUFFER, 0)); 1299 if (glsb->format().fPacked) { 1300 GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, 1301 GR_GL_DEPTH_ATTACHMENT, 1302 GR_GL_RENDERBUFFER, 0)); 1303 } 1304 return false; 1305 } else { 1306 fGLContext.caps()->markColorConfigAndStencilFormatAsVerified( 1307 rt->config(), 1308 glsb->format()); 1309 } 1310 } 1311 return true; 1312 } 1313 } 1314 1315 //////////////////////////////////////////////////////////////////////////////// 1316 1317 GrVertexBuffer* GrGLGpu::onCreateVertexBuffer(size_t size, bool dynamic) { 1318 GrGLVertexBuffer::Desc desc; 1319 desc.fDynamic = dynamic; 1320 desc.fSizeInBytes = size; 1321 1322 if (this->glCaps().useNonVBOVertexAndIndexDynamicData() && desc.fDynamic) { 1323 desc.fID = 0; 1324 GrGLVertexBuffer* vertexBuffer = SkNEW_ARGS(GrGLVertexBuffer, (this, desc)); 1325 return vertexBuffer; 1326 } else { 1327 GL_CALL(GenBuffers(1, &desc.fID)); 1328 if (desc.fID) { 1329 fHWGeometryState.setVertexBufferID(this, desc.fID); 1330 CLEAR_ERROR_BEFORE_ALLOC(this->glInterface()); 1331 // make sure driver can allocate memory for this buffer 1332 GL_ALLOC_CALL(this->glInterface(), 1333 BufferData(GR_GL_ARRAY_BUFFER, 1334 (GrGLsizeiptr) desc.fSizeInBytes, 1335 NULL, // data ptr 1336 desc.fDynamic ? GR_GL_DYNAMIC_DRAW : GR_GL_STATIC_DRAW)); 1337 if (CHECK_ALLOC_ERROR(this->glInterface()) != GR_GL_NO_ERROR) { 1338 GL_CALL(DeleteBuffers(1, &desc.fID)); 1339 this->notifyVertexBufferDelete(desc.fID); 1340 return NULL; 1341 } 1342 GrGLVertexBuffer* vertexBuffer = SkNEW_ARGS(GrGLVertexBuffer, (this, desc)); 1343 return vertexBuffer; 1344 } 1345 return NULL; 1346 } 1347 } 1348 1349 GrIndexBuffer* GrGLGpu::onCreateIndexBuffer(size_t size, bool dynamic) { 1350 GrGLIndexBuffer::Desc desc; 1351 desc.fDynamic = dynamic; 1352 desc.fSizeInBytes = size; 1353 1354 if (this->glCaps().useNonVBOVertexAndIndexDynamicData() && desc.fDynamic) { 1355 desc.fID = 0; 1356 GrIndexBuffer* indexBuffer = SkNEW_ARGS(GrGLIndexBuffer, (this, desc)); 1357 return indexBuffer; 1358 } else { 1359 GL_CALL(GenBuffers(1, &desc.fID)); 1360 if (desc.fID) { 1361 fHWGeometryState.setIndexBufferIDOnDefaultVertexArray(this, desc.fID); 1362 CLEAR_ERROR_BEFORE_ALLOC(this->glInterface()); 1363 // make sure driver can allocate memory for this buffer 1364 GL_ALLOC_CALL(this->glInterface(), 1365 BufferData(GR_GL_ELEMENT_ARRAY_BUFFER, 1366 (GrGLsizeiptr) desc.fSizeInBytes, 1367 NULL, // data ptr 1368 desc.fDynamic ? GR_GL_DYNAMIC_DRAW : GR_GL_STATIC_DRAW)); 1369 if (CHECK_ALLOC_ERROR(this->glInterface()) != GR_GL_NO_ERROR) { 1370 GL_CALL(DeleteBuffers(1, &desc.fID)); 1371 this->notifyIndexBufferDelete(desc.fID); 1372 return NULL; 1373 } 1374 GrIndexBuffer* indexBuffer = SkNEW_ARGS(GrGLIndexBuffer, (this, desc)); 1375 return indexBuffer; 1376 } 1377 return NULL; 1378 } 1379 } 1380 1381 void GrGLGpu::flushScissor(const GrScissorState& scissorState, 1382 const GrGLIRect& rtViewport, 1383 GrSurfaceOrigin rtOrigin) { 1384 if (scissorState.enabled()) { 1385 GrGLIRect scissor; 1386 scissor.setRelativeTo(rtViewport, 1387 scissorState.rect().fLeft, 1388 scissorState.rect().fTop, 1389 scissorState.rect().width(), 1390 scissorState.rect().height(), 1391 rtOrigin); 1392 // if the scissor fully contains the viewport then we fall through and 1393 // disable the scissor test. 1394 if (!scissor.contains(rtViewport)) { 1395 if (fHWScissorSettings.fRect != scissor) { 1396 scissor.pushToGLScissor(this->glInterface()); 1397 fHWScissorSettings.fRect = scissor; 1398 } 1399 if (kYes_TriState != fHWScissorSettings.fEnabled) { 1400 GL_CALL(Enable(GR_GL_SCISSOR_TEST)); 1401 fHWScissorSettings.fEnabled = kYes_TriState; 1402 } 1403 return; 1404 } 1405 } 1406 1407 // See fall through note above 1408 this->disableScissor(); 1409 } 1410 1411 bool GrGLGpu::flushGLState(const DrawArgs& args) { 1412 GrXferProcessor::BlendInfo blendInfo; 1413 const GrPipeline& pipeline = *args.fPipeline; 1414 args.fPipeline->getXferProcessor()->getBlendInfo(&blendInfo); 1415 1416 this->flushDither(pipeline.isDitherState()); 1417 this->flushColorWrite(blendInfo.fWriteColor); 1418 this->flushDrawFace(pipeline.getDrawFace()); 1419 1420 fCurrentProgram.reset(fProgramCache->getProgram(args)); 1421 if (NULL == fCurrentProgram.get()) { 1422 GrContextDebugf(this->getContext(), "Failed to create program!\n"); 1423 return false; 1424 } 1425 1426 fCurrentProgram.get()->ref(); 1427 1428 GrGLuint programID = fCurrentProgram->programID(); 1429 if (fHWProgramID != programID) { 1430 GL_CALL(UseProgram(programID)); 1431 fHWProgramID = programID; 1432 } 1433 1434 if (blendInfo.fWriteColor) { 1435 this->flushBlend(blendInfo); 1436 } 1437 1438 fCurrentProgram->setData(*args.fPrimitiveProcessor, pipeline, *args.fBatchTracker); 1439 1440 GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(pipeline.getRenderTarget()); 1441 this->flushStencil(pipeline.getStencil()); 1442 this->flushScissor(pipeline.getScissorState(), glRT->getViewport(), glRT->origin()); 1443 this->flushHWAAState(glRT, pipeline.isHWAntialiasState()); 1444 1445 // This must come after textures are flushed because a texture may need 1446 // to be msaa-resolved (which will modify bound FBO state). 1447 this->flushRenderTarget(glRT, NULL); 1448 1449 return true; 1450 } 1451 1452 void GrGLGpu::setupGeometry(const GrPrimitiveProcessor& primProc, 1453 const GrNonInstancedVertices& vertices, 1454 size_t* indexOffsetInBytes) { 1455 GrGLVertexBuffer* vbuf; 1456 vbuf = (GrGLVertexBuffer*) vertices.vertexBuffer(); 1457 1458 SkASSERT(vbuf); 1459 SkASSERT(!vbuf->isMapped()); 1460 1461 GrGLIndexBuffer* ibuf = NULL; 1462 if (vertices.isIndexed()) { 1463 SkASSERT(indexOffsetInBytes); 1464 1465 *indexOffsetInBytes = 0; 1466 ibuf = (GrGLIndexBuffer*)vertices.indexBuffer(); 1467 1468 SkASSERT(ibuf); 1469 SkASSERT(!ibuf->isMapped()); 1470 *indexOffsetInBytes += ibuf->baseOffset(); 1471 } 1472 GrGLAttribArrayState* attribState = 1473 fHWGeometryState.bindArrayAndBuffersToDraw(this, vbuf, ibuf); 1474 1475 int vaCount = primProc.numAttribs(); 1476 if (vaCount > 0) { 1477 1478 GrGLsizei stride = static_cast<GrGLsizei>(primProc.getVertexStride()); 1479 1480 size_t vertexOffsetInBytes = stride * vertices.startVertex(); 1481 1482 vertexOffsetInBytes += vbuf->baseOffset(); 1483 1484 uint32_t usedAttribArraysMask = 0; 1485 size_t offset = 0; 1486 1487 for (int attribIndex = 0; attribIndex < vaCount; attribIndex++) { 1488 const GrGeometryProcessor::Attribute& attrib = primProc.getAttrib(attribIndex); 1489 usedAttribArraysMask |= (1 << attribIndex); 1490 GrVertexAttribType attribType = attrib.fType; 1491 attribState->set(this, 1492 attribIndex, 1493 vbuf, 1494 GrGLAttribTypeToLayout(attribType).fCount, 1495 GrGLAttribTypeToLayout(attribType).fType, 1496 GrGLAttribTypeToLayout(attribType).fNormalized, 1497 stride, 1498 reinterpret_cast<GrGLvoid*>(vertexOffsetInBytes + offset)); 1499 offset += attrib.fOffset; 1500 } 1501 attribState->disableUnusedArrays(this, usedAttribArraysMask); 1502 } 1503 } 1504 1505 void GrGLGpu::buildProgramDesc(GrProgramDesc* desc, 1506 const GrPrimitiveProcessor& primProc, 1507 const GrPipeline& pipeline, 1508 const GrBatchTracker& batchTracker) const { 1509 if (!GrGLProgramDescBuilder::Build(desc, primProc, pipeline, this, batchTracker)) { 1510 SkDEBUGFAIL("Failed to generate GL program descriptor"); 1511 } 1512 } 1513 1514 void GrGLGpu::disableScissor() { 1515 if (kNo_TriState != fHWScissorSettings.fEnabled) { 1516 GL_CALL(Disable(GR_GL_SCISSOR_TEST)); 1517 fHWScissorSettings.fEnabled = kNo_TriState; 1518 return; 1519 } 1520 } 1521 1522 void GrGLGpu::onClear(GrRenderTarget* target, const SkIRect* rect, GrColor color, 1523 bool canIgnoreRect) { 1524 // parent class should never let us get here with no RT 1525 SkASSERT(target); 1526 GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(target); 1527 1528 if (canIgnoreRect && this->glCaps().fullClearIsFree()) { 1529 rect = NULL; 1530 } 1531 1532 SkIRect clippedRect; 1533 if (rect) { 1534 // flushScissor expects rect to be clipped to the target. 1535 clippedRect = *rect; 1536 SkIRect rtRect = SkIRect::MakeWH(target->width(), target->height()); 1537 if (clippedRect.intersect(rtRect)) { 1538 rect = &clippedRect; 1539 } else { 1540 return; 1541 } 1542 } 1543 1544 this->flushRenderTarget(glRT, rect); 1545 GrScissorState scissorState; 1546 if (rect) { 1547 scissorState.set(*rect); 1548 } 1549 this->flushScissor(scissorState, glRT->getViewport(), glRT->origin()); 1550 1551 GrGLfloat r, g, b, a; 1552 static const GrGLfloat scale255 = 1.f / 255.f; 1553 a = GrColorUnpackA(color) * scale255; 1554 GrGLfloat scaleRGB = scale255; 1555 r = GrColorUnpackR(color) * scaleRGB; 1556 g = GrColorUnpackG(color) * scaleRGB; 1557 b = GrColorUnpackB(color) * scaleRGB; 1558 1559 GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE)); 1560 fHWWriteToColor = kYes_TriState; 1561 GL_CALL(ClearColor(r, g, b, a)); 1562 GL_CALL(Clear(GR_GL_COLOR_BUFFER_BIT)); 1563 } 1564 1565 void GrGLGpu::discard(GrRenderTarget* renderTarget) { 1566 SkASSERT(renderTarget); 1567 if (!this->caps()->discardRenderTargetSupport()) { 1568 return; 1569 } 1570 1571 GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(renderTarget); 1572 if (renderTarget->getUniqueID() != fHWBoundRenderTargetUniqueID) { 1573 fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID; 1574 fStats.incRenderTargetBinds(); 1575 GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, glRT->renderFBOID())); 1576 } 1577 switch (this->glCaps().invalidateFBType()) { 1578 case GrGLCaps::kNone_InvalidateFBType: 1579 SkFAIL("Should never get here."); 1580 break; 1581 case GrGLCaps::kInvalidate_InvalidateFBType: 1582 if (0 == glRT->renderFBOID()) { 1583 // When rendering to the default framebuffer the legal values for attachments 1584 // are GL_COLOR, GL_DEPTH, GL_STENCIL, ... rather than the various FBO attachment 1585 // types. 1586 static const GrGLenum attachments[] = { GR_GL_COLOR }; 1587 GL_CALL(InvalidateFramebuffer(GR_GL_FRAMEBUFFER, SK_ARRAY_COUNT(attachments), 1588 attachments)); 1589 } else { 1590 static const GrGLenum attachments[] = { GR_GL_COLOR_ATTACHMENT0 }; 1591 GL_CALL(InvalidateFramebuffer(GR_GL_FRAMEBUFFER, SK_ARRAY_COUNT(attachments), 1592 attachments)); 1593 } 1594 break; 1595 case GrGLCaps::kDiscard_InvalidateFBType: { 1596 if (0 == glRT->renderFBOID()) { 1597 // When rendering to the default framebuffer the legal values for attachments 1598 // are GL_COLOR, GL_DEPTH, GL_STENCIL, ... rather than the various FBO attachment 1599 // types. See glDiscardFramebuffer() spec. 1600 static const GrGLenum attachments[] = { GR_GL_COLOR }; 1601 GL_CALL(DiscardFramebuffer(GR_GL_FRAMEBUFFER, SK_ARRAY_COUNT(attachments), 1602 attachments)); 1603 } else { 1604 static const GrGLenum attachments[] = { GR_GL_COLOR_ATTACHMENT0 }; 1605 GL_CALL(DiscardFramebuffer(GR_GL_FRAMEBUFFER, SK_ARRAY_COUNT(attachments), 1606 attachments)); 1607 } 1608 break; 1609 } 1610 } 1611 renderTarget->flagAsResolved(); 1612 } 1613 1614 1615 void GrGLGpu::clearStencil(GrRenderTarget* target) { 1616 if (NULL == target) { 1617 return; 1618 } 1619 GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(target); 1620 this->flushRenderTarget(glRT, &SkIRect::EmptyIRect()); 1621 1622 this->disableScissor(); 1623 1624 GL_CALL(StencilMask(0xffffffff)); 1625 GL_CALL(ClearStencil(0)); 1626 GL_CALL(Clear(GR_GL_STENCIL_BUFFER_BIT)); 1627 fHWStencilSettings.invalidate(); 1628 } 1629 1630 void GrGLGpu::onClearStencilClip(GrRenderTarget* target, const SkIRect& rect, bool insideClip) { 1631 SkASSERT(target); 1632 1633 GrStencilAttachment* sb = target->renderTargetPriv().getStencilAttachment(); 1634 // this should only be called internally when we know we have a 1635 // stencil buffer. 1636 SkASSERT(sb); 1637 GrGLint stencilBitCount = sb->bits(); 1638 #if 0 1639 SkASSERT(stencilBitCount > 0); 1640 GrGLint clipStencilMask = (1 << (stencilBitCount - 1)); 1641 #else 1642 // we could just clear the clip bit but when we go through 1643 // ANGLE a partial stencil mask will cause clears to be 1644 // turned into draws. Our contract on GrDrawTarget says that 1645 // changing the clip between stencil passes may or may not 1646 // zero the client's clip bits. So we just clear the whole thing. 1647 static const GrGLint clipStencilMask = ~0; 1648 #endif 1649 GrGLint value; 1650 if (insideClip) { 1651 value = (1 << (stencilBitCount - 1)); 1652 } else { 1653 value = 0; 1654 } 1655 GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(target); 1656 this->flushRenderTarget(glRT, &SkIRect::EmptyIRect()); 1657 1658 GrScissorState scissorState; 1659 scissorState.set(rect); 1660 this->flushScissor(scissorState, glRT->getViewport(), glRT->origin()); 1661 1662 GL_CALL(StencilMask((uint32_t) clipStencilMask)); 1663 GL_CALL(ClearStencil(value)); 1664 GL_CALL(Clear(GR_GL_STENCIL_BUFFER_BIT)); 1665 fHWStencilSettings.invalidate(); 1666 } 1667 1668 bool GrGLGpu::readPixelsWillPayForYFlip(GrRenderTarget* renderTarget, 1669 int left, int top, 1670 int width, int height, 1671 GrPixelConfig config, 1672 size_t rowBytes) const { 1673 // If this rendertarget is aready TopLeft, we don't need to flip. 1674 if (kTopLeft_GrSurfaceOrigin == renderTarget->origin()) { 1675 return false; 1676 } 1677 1678 // if GL can do the flip then we'll never pay for it. 1679 if (this->glCaps().packFlipYSupport()) { 1680 return false; 1681 } 1682 1683 // If we have to do memcpy to handle non-trim rowBytes then we 1684 // get the flip for free. Otherwise it costs. 1685 if (this->glCaps().packRowLengthSupport()) { 1686 return true; 1687 } 1688 // If we have to do memcpys to handle rowBytes then y-flip is free 1689 // Note the rowBytes might be tight to the passed in data, but if data 1690 // gets clipped in x to the target the rowBytes will no longer be tight. 1691 if (left >= 0 && (left + width) < renderTarget->width()) { 1692 return 0 == rowBytes || 1693 GrBytesPerPixel(config) * width == rowBytes; 1694 } else { 1695 return false; 1696 } 1697 } 1698 1699 bool GrGLGpu::onReadPixels(GrRenderTarget* target, 1700 int left, int top, 1701 int width, int height, 1702 GrPixelConfig config, 1703 void* buffer, 1704 size_t rowBytes) { 1705 // We cannot read pixels into a compressed buffer 1706 if (GrPixelConfigIsCompressed(config)) { 1707 return false; 1708 } 1709 1710 GrGLenum format = 0; 1711 GrGLenum type = 0; 1712 bool flipY = kBottomLeft_GrSurfaceOrigin == target->origin(); 1713 if (!this->configToGLFormats(config, false, NULL, &format, &type)) { 1714 return false; 1715 } 1716 size_t bpp = GrBytesPerPixel(config); 1717 if (!adjust_pixel_ops_params(target->width(), target->height(), bpp, 1718 &left, &top, &width, &height, 1719 const_cast<const void**>(&buffer), 1720 &rowBytes)) { 1721 return false; 1722 } 1723 1724 // resolve the render target if necessary 1725 GrGLRenderTarget* tgt = static_cast<GrGLRenderTarget*>(target); 1726 switch (tgt->getResolveType()) { 1727 case GrGLRenderTarget::kCantResolve_ResolveType: 1728 return false; 1729 case GrGLRenderTarget::kAutoResolves_ResolveType: 1730 this->flushRenderTarget(static_cast<GrGLRenderTarget*>(target), &SkIRect::EmptyIRect()); 1731 break; 1732 case GrGLRenderTarget::kCanResolve_ResolveType: 1733 this->onResolveRenderTarget(tgt); 1734 // we don't track the state of the READ FBO ID. 1735 fStats.incRenderTargetBinds(); 1736 GL_CALL(BindFramebuffer(GR_GL_READ_FRAMEBUFFER, 1737 tgt->textureFBOID())); 1738 break; 1739 default: 1740 SkFAIL("Unknown resolve type"); 1741 } 1742 1743 const GrGLIRect& glvp = tgt->getViewport(); 1744 1745 // the read rect is viewport-relative 1746 GrGLIRect readRect; 1747 readRect.setRelativeTo(glvp, left, top, width, height, target->origin()); 1748 1749 size_t tightRowBytes = bpp * width; 1750 if (0 == rowBytes) { 1751 rowBytes = tightRowBytes; 1752 } 1753 size_t readDstRowBytes = tightRowBytes; 1754 void* readDst = buffer; 1755 1756 // determine if GL can read using the passed rowBytes or if we need 1757 // a scratch buffer. 1758 GrAutoMalloc<32 * sizeof(GrColor)> scratch; 1759 if (rowBytes != tightRowBytes) { 1760 if (this->glCaps().packRowLengthSupport()) { 1761 SkASSERT(!(rowBytes % sizeof(GrColor))); 1762 GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 1763 static_cast<GrGLint>(rowBytes / sizeof(GrColor)))); 1764 readDstRowBytes = rowBytes; 1765 } else { 1766 scratch.reset(tightRowBytes * height); 1767 readDst = scratch.get(); 1768 } 1769 } 1770 if (flipY && this->glCaps().packFlipYSupport()) { 1771 GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, 1)); 1772 } 1773 GL_CALL(ReadPixels(readRect.fLeft, readRect.fBottom, 1774 readRect.fWidth, readRect.fHeight, 1775 format, type, readDst)); 1776 if (readDstRowBytes != tightRowBytes) { 1777 SkASSERT(this->glCaps().packRowLengthSupport()); 1778 GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 0)); 1779 } 1780 if (flipY && this->glCaps().packFlipYSupport()) { 1781 GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, 0)); 1782 flipY = false; 1783 } 1784 1785 // now reverse the order of the rows, since GL's are bottom-to-top, but our 1786 // API presents top-to-bottom. We must preserve the padding contents. Note 1787 // that the above readPixels did not overwrite the padding. 1788 if (readDst == buffer) { 1789 SkASSERT(rowBytes == readDstRowBytes); 1790 if (flipY) { 1791 scratch.reset(tightRowBytes); 1792 void* tmpRow = scratch.get(); 1793 // flip y in-place by rows 1794 const int halfY = height >> 1; 1795 char* top = reinterpret_cast<char*>(buffer); 1796 char* bottom = top + (height - 1) * rowBytes; 1797 for (int y = 0; y < halfY; y++) { 1798 memcpy(tmpRow, top, tightRowBytes); 1799 memcpy(top, bottom, tightRowBytes); 1800 memcpy(bottom, tmpRow, tightRowBytes); 1801 top += rowBytes; 1802 bottom -= rowBytes; 1803 } 1804 } 1805 } else { 1806 SkASSERT(readDst != buffer); SkASSERT(rowBytes != tightRowBytes); 1807 // copy from readDst to buffer while flipping y 1808 // const int halfY = height >> 1; 1809 const char* src = reinterpret_cast<const char*>(readDst); 1810 char* dst = reinterpret_cast<char*>(buffer); 1811 if (flipY) { 1812 dst += (height-1) * rowBytes; 1813 } 1814 for (int y = 0; y < height; y++) { 1815 memcpy(dst, src, tightRowBytes); 1816 src += readDstRowBytes; 1817 if (!flipY) { 1818 dst += rowBytes; 1819 } else { 1820 dst -= rowBytes; 1821 } 1822 } 1823 } 1824 return true; 1825 } 1826 1827 void GrGLGpu::flushRenderTarget(GrGLRenderTarget* target, const SkIRect* bound) { 1828 1829 SkASSERT(target); 1830 1831 uint32_t rtID = target->getUniqueID(); 1832 if (fHWBoundRenderTargetUniqueID != rtID) { 1833 fStats.incRenderTargetBinds(); 1834 GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, target->renderFBOID())); 1835 #ifdef SK_DEBUG 1836 // don't do this check in Chromium -- this is causing 1837 // lots of repeated command buffer flushes when the compositor is 1838 // rendering with Ganesh, which is really slow; even too slow for 1839 // Debug mode. 1840 if (!this->glContext().isChromium()) { 1841 GrGLenum status; 1842 GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); 1843 if (status != GR_GL_FRAMEBUFFER_COMPLETE) { 1844 SkDebugf("GrGLGpu::flushRenderTarget glCheckFramebufferStatus %x\n", status); 1845 } 1846 } 1847 #endif 1848 fHWBoundRenderTargetUniqueID = rtID; 1849 const GrGLIRect& vp = target->getViewport(); 1850 if (fHWViewport != vp) { 1851 vp.pushToGLViewport(this->glInterface()); 1852 fHWViewport = vp; 1853 } 1854 } 1855 if (NULL == bound || !bound->isEmpty()) { 1856 target->flagAsNeedingResolve(bound); 1857 } 1858 1859 GrTexture *texture = target->asTexture(); 1860 if (texture) { 1861 texture->texturePriv().dirtyMipMaps(true); 1862 } 1863 } 1864 1865 GrGLenum gPrimitiveType2GLMode[] = { 1866 GR_GL_TRIANGLES, 1867 GR_GL_TRIANGLE_STRIP, 1868 GR_GL_TRIANGLE_FAN, 1869 GR_GL_POINTS, 1870 GR_GL_LINES, 1871 GR_GL_LINE_STRIP 1872 }; 1873 1874 #define SWAP_PER_DRAW 0 1875 1876 #if SWAP_PER_DRAW 1877 #if defined(SK_BUILD_FOR_MAC) 1878 #include <AGL/agl.h> 1879 #elif defined(SK_BUILD_FOR_WIN32) 1880 #include <gl/GL.h> 1881 void SwapBuf() { 1882 DWORD procID = GetCurrentProcessId(); 1883 HWND hwnd = GetTopWindow(GetDesktopWindow()); 1884 while(hwnd) { 1885 DWORD wndProcID = 0; 1886 GetWindowThreadProcessId(hwnd, &wndProcID); 1887 if(wndProcID == procID) { 1888 SwapBuffers(GetDC(hwnd)); 1889 } 1890 hwnd = GetNextWindow(hwnd, GW_HWNDNEXT); 1891 } 1892 } 1893 #endif 1894 #endif 1895 1896 void GrGLGpu::onDraw(const DrawArgs& args, const GrNonInstancedVertices& vertices) { 1897 if (!this->flushGLState(args)) { 1898 return; 1899 } 1900 1901 size_t indexOffsetInBytes = 0; 1902 this->setupGeometry(*args.fPrimitiveProcessor, vertices, &indexOffsetInBytes); 1903 1904 SkASSERT((size_t)vertices.primitiveType() < SK_ARRAY_COUNT(gPrimitiveType2GLMode)); 1905 1906 if (vertices.isIndexed()) { 1907 GrGLvoid* indices = 1908 reinterpret_cast<GrGLvoid*>(indexOffsetInBytes + sizeof(uint16_t) * 1909 vertices.startIndex()); 1910 // info.startVertex() was accounted for by setupGeometry. 1911 GL_CALL(DrawElements(gPrimitiveType2GLMode[vertices.primitiveType()], 1912 vertices.indexCount(), 1913 GR_GL_UNSIGNED_SHORT, 1914 indices)); 1915 } else { 1916 // Pass 0 for parameter first. We have to adjust glVertexAttribPointer() to account for 1917 // startVertex in the DrawElements case. So we always rely on setupGeometry to have 1918 // accounted for startVertex. 1919 GL_CALL(DrawArrays(gPrimitiveType2GLMode[vertices.primitiveType()], 0, 1920 vertices.vertexCount())); 1921 } 1922 #if SWAP_PER_DRAW 1923 glFlush(); 1924 #if defined(SK_BUILD_FOR_MAC) 1925 aglSwapBuffers(aglGetCurrentContext()); 1926 int set_a_break_pt_here = 9; 1927 aglSwapBuffers(aglGetCurrentContext()); 1928 #elif defined(SK_BUILD_FOR_WIN32) 1929 SwapBuf(); 1930 int set_a_break_pt_here = 9; 1931 SwapBuf(); 1932 #endif 1933 #endif 1934 } 1935 1936 void GrGLGpu::onStencilPath(const GrPath* path, const StencilPathState& state) { 1937 this->flushColorWrite(false); 1938 this->flushDrawFace(GrPipelineBuilder::kBoth_DrawFace); 1939 1940 GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(state.fRenderTarget); 1941 SkISize size = SkISize::Make(rt->width(), rt->height()); 1942 this->glPathRendering()->setProjectionMatrix(*state.fViewMatrix, size, rt->origin()); 1943 this->flushScissor(*state.fScissor, rt->getViewport(), rt->origin()); 1944 this->flushHWAAState(rt, state.fUseHWAA); 1945 this->flushRenderTarget(rt, NULL); 1946 1947 fPathRendering->stencilPath(path, *state.fStencil); 1948 } 1949 1950 void GrGLGpu::onDrawPath(const DrawArgs& args, const GrPath* path, 1951 const GrStencilSettings& stencil) { 1952 if (!this->flushGLState(args)) { 1953 return; 1954 } 1955 fPathRendering->drawPath(path, stencil); 1956 } 1957 1958 void GrGLGpu::onDrawPaths(const DrawArgs& args, 1959 const GrPathRange* pathRange, 1960 const void* indices, 1961 GrDrawTarget::PathIndexType indexType, 1962 const float transformValues[], 1963 GrDrawTarget::PathTransformType transformType, 1964 int count, 1965 const GrStencilSettings& stencil) { 1966 if (!this->flushGLState(args)) { 1967 return; 1968 } 1969 fPathRendering->drawPaths(pathRange, indices, indexType, transformValues, 1970 transformType, count, stencil); 1971 } 1972 1973 void GrGLGpu::onResolveRenderTarget(GrRenderTarget* target) { 1974 GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(target); 1975 if (rt->needsResolve()) { 1976 // Some extensions automatically resolves the texture when it is read. 1977 if (this->glCaps().usesMSAARenderBuffers()) { 1978 SkASSERT(rt->textureFBOID() != rt->renderFBOID()); 1979 fStats.incRenderTargetBinds(); 1980 fStats.incRenderTargetBinds(); 1981 GL_CALL(BindFramebuffer(GR_GL_READ_FRAMEBUFFER, rt->renderFBOID())); 1982 GL_CALL(BindFramebuffer(GR_GL_DRAW_FRAMEBUFFER, rt->textureFBOID())); 1983 // make sure we go through flushRenderTarget() since we've modified 1984 // the bound DRAW FBO ID. 1985 fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID; 1986 const GrGLIRect& vp = rt->getViewport(); 1987 const SkIRect dirtyRect = rt->getResolveRect(); 1988 1989 if (GrGLCaps::kES_Apple_MSFBOType == this->glCaps().msFBOType()) { 1990 // Apple's extension uses the scissor as the blit bounds. 1991 GrScissorState scissorState; 1992 scissorState.set(dirtyRect); 1993 this->flushScissor(scissorState, vp, rt->origin()); 1994 GL_CALL(ResolveMultisampleFramebuffer()); 1995 } else { 1996 GrGLIRect r; 1997 r.setRelativeTo(vp, dirtyRect.fLeft, dirtyRect.fTop, 1998 dirtyRect.width(), dirtyRect.height(), target->origin()); 1999 2000 int right = r.fLeft + r.fWidth; 2001 int top = r.fBottom + r.fHeight; 2002 2003 // BlitFrameBuffer respects the scissor, so disable it. 2004 this->disableScissor(); 2005 GL_CALL(BlitFramebuffer(r.fLeft, r.fBottom, right, top, 2006 r.fLeft, r.fBottom, right, top, 2007 GR_GL_COLOR_BUFFER_BIT, GR_GL_NEAREST)); 2008 } 2009 } 2010 rt->flagAsResolved(); 2011 } 2012 } 2013 2014 namespace { 2015 2016 2017 GrGLenum gr_to_gl_stencil_op(GrStencilOp op) { 2018 static const GrGLenum gTable[] = { 2019 GR_GL_KEEP, // kKeep_StencilOp 2020 GR_GL_REPLACE, // kReplace_StencilOp 2021 GR_GL_INCR_WRAP, // kIncWrap_StencilOp 2022 GR_GL_INCR, // kIncClamp_StencilOp 2023 GR_GL_DECR_WRAP, // kDecWrap_StencilOp 2024 GR_GL_DECR, // kDecClamp_StencilOp 2025 GR_GL_ZERO, // kZero_StencilOp 2026 GR_GL_INVERT, // kInvert_StencilOp 2027 }; 2028 GR_STATIC_ASSERT(SK_ARRAY_COUNT(gTable) == kStencilOpCount); 2029 GR_STATIC_ASSERT(0 == kKeep_StencilOp); 2030 GR_STATIC_ASSERT(1 == kReplace_StencilOp); 2031 GR_STATIC_ASSERT(2 == kIncWrap_StencilOp); 2032 GR_STATIC_ASSERT(3 == kIncClamp_StencilOp); 2033 GR_STATIC_ASSERT(4 == kDecWrap_StencilOp); 2034 GR_STATIC_ASSERT(5 == kDecClamp_StencilOp); 2035 GR_STATIC_ASSERT(6 == kZero_StencilOp); 2036 GR_STATIC_ASSERT(7 == kInvert_StencilOp); 2037 SkASSERT((unsigned) op < kStencilOpCount); 2038 return gTable[op]; 2039 } 2040 2041 void set_gl_stencil(const GrGLInterface* gl, 2042 const GrStencilSettings& settings, 2043 GrGLenum glFace, 2044 GrStencilSettings::Face grFace) { 2045 GrGLenum glFunc = GrToGLStencilFunc(settings.func(grFace)); 2046 GrGLenum glFailOp = gr_to_gl_stencil_op(settings.failOp(grFace)); 2047 GrGLenum glPassOp = gr_to_gl_stencil_op(settings.passOp(grFace)); 2048 2049 GrGLint ref = settings.funcRef(grFace); 2050 GrGLint mask = settings.funcMask(grFace); 2051 GrGLint writeMask = settings.writeMask(grFace); 2052 2053 if (GR_GL_FRONT_AND_BACK == glFace) { 2054 // we call the combined func just in case separate stencil is not 2055 // supported. 2056 GR_GL_CALL(gl, StencilFunc(glFunc, ref, mask)); 2057 GR_GL_CALL(gl, StencilMask(writeMask)); 2058 GR_GL_CALL(gl, StencilOp(glFailOp, glPassOp, glPassOp)); 2059 } else { 2060 GR_GL_CALL(gl, StencilFuncSeparate(glFace, glFunc, ref, mask)); 2061 GR_GL_CALL(gl, StencilMaskSeparate(glFace, writeMask)); 2062 GR_GL_CALL(gl, StencilOpSeparate(glFace, glFailOp, glPassOp, glPassOp)); 2063 } 2064 } 2065 } 2066 2067 void GrGLGpu::flushStencil(const GrStencilSettings& stencilSettings) { 2068 if (fHWStencilSettings != stencilSettings) { 2069 if (stencilSettings.isDisabled()) { 2070 if (kNo_TriState != fHWStencilTestEnabled) { 2071 GL_CALL(Disable(GR_GL_STENCIL_TEST)); 2072 fHWStencilTestEnabled = kNo_TriState; 2073 } 2074 } else { 2075 if (kYes_TriState != fHWStencilTestEnabled) { 2076 GL_CALL(Enable(GR_GL_STENCIL_TEST)); 2077 fHWStencilTestEnabled = kYes_TriState; 2078 } 2079 } 2080 if (!stencilSettings.isDisabled()) { 2081 if (this->caps()->twoSidedStencilSupport()) { 2082 set_gl_stencil(this->glInterface(), 2083 stencilSettings, 2084 GR_GL_FRONT, 2085 GrStencilSettings::kFront_Face); 2086 set_gl_stencil(this->glInterface(), 2087 stencilSettings, 2088 GR_GL_BACK, 2089 GrStencilSettings::kBack_Face); 2090 } else { 2091 set_gl_stencil(this->glInterface(), 2092 stencilSettings, 2093 GR_GL_FRONT_AND_BACK, 2094 GrStencilSettings::kFront_Face); 2095 } 2096 } 2097 fHWStencilSettings = stencilSettings; 2098 } 2099 } 2100 2101 void GrGLGpu::flushHWAAState(GrRenderTarget* rt, bool useHWAA) { 2102 SkASSERT(!useHWAA || rt->isMultisampled()); 2103 2104 if (kGL_GrGLStandard == this->glStandard()) { 2105 if (useHWAA) { 2106 if (kYes_TriState != fMSAAEnabled) { 2107 GL_CALL(Enable(GR_GL_MULTISAMPLE)); 2108 fMSAAEnabled = kYes_TriState; 2109 } 2110 } else { 2111 if (kNo_TriState != fMSAAEnabled) { 2112 GL_CALL(Disable(GR_GL_MULTISAMPLE)); 2113 fMSAAEnabled = kNo_TriState; 2114 } 2115 } 2116 } 2117 } 2118 2119 void GrGLGpu::flushBlend(const GrXferProcessor::BlendInfo& blendInfo) { 2120 // Any optimization to disable blending should have already been applied and 2121 // tweaked the equation to "add" or "subtract", and the coeffs to (1, 0). 2122 2123 GrBlendEquation equation = blendInfo.fEquation; 2124 GrBlendCoeff srcCoeff = blendInfo.fSrcBlend; 2125 GrBlendCoeff dstCoeff = blendInfo.fDstBlend; 2126 bool blendOff = (kAdd_GrBlendEquation == equation || kSubtract_GrBlendEquation == equation) && 2127 kOne_GrBlendCoeff == srcCoeff && kZero_GrBlendCoeff == dstCoeff; 2128 if (blendOff) { 2129 if (kNo_TriState != fHWBlendState.fEnabled) { 2130 GL_CALL(Disable(GR_GL_BLEND)); 2131 fHWBlendState.fEnabled = kNo_TriState; 2132 } 2133 return; 2134 } 2135 2136 if (kYes_TriState != fHWBlendState.fEnabled) { 2137 GL_CALL(Enable(GR_GL_BLEND)); 2138 fHWBlendState.fEnabled = kYes_TriState; 2139 } 2140 2141 if (fHWBlendState.fEquation != equation) { 2142 GL_CALL(BlendEquation(gXfermodeEquation2Blend[equation])); 2143 fHWBlendState.fEquation = equation; 2144 } 2145 2146 if (GrBlendEquationIsAdvanced(equation)) { 2147 SkASSERT(this->caps()->advancedBlendEquationSupport()); 2148 // Advanced equations have no other blend state. 2149 return; 2150 } 2151 2152 if (fHWBlendState.fSrcCoeff != srcCoeff || 2153 fHWBlendState.fDstCoeff != dstCoeff) { 2154 GL_CALL(BlendFunc(gXfermodeCoeff2Blend[srcCoeff], 2155 gXfermodeCoeff2Blend[dstCoeff])); 2156 fHWBlendState.fSrcCoeff = srcCoeff; 2157 fHWBlendState.fDstCoeff = dstCoeff; 2158 } 2159 2160 GrColor blendConst = blendInfo.fBlendConstant; 2161 if ((BlendCoeffReferencesConstant(srcCoeff) || 2162 BlendCoeffReferencesConstant(dstCoeff)) && 2163 (!fHWBlendState.fConstColorValid || 2164 fHWBlendState.fConstColor != blendConst)) { 2165 GrGLfloat c[4]; 2166 GrColorToRGBAFloat(blendConst, c); 2167 GL_CALL(BlendColor(c[0], c[1], c[2], c[3])); 2168 fHWBlendState.fConstColor = blendConst; 2169 fHWBlendState.fConstColorValid = true; 2170 } 2171 } 2172 2173 static inline GrGLenum tile_to_gl_wrap(SkShader::TileMode tm) { 2174 static const GrGLenum gWrapModes[] = { 2175 GR_GL_CLAMP_TO_EDGE, 2176 GR_GL_REPEAT, 2177 GR_GL_MIRRORED_REPEAT 2178 }; 2179 GR_STATIC_ASSERT(SkShader::kTileModeCount == SK_ARRAY_COUNT(gWrapModes)); 2180 GR_STATIC_ASSERT(0 == SkShader::kClamp_TileMode); 2181 GR_STATIC_ASSERT(1 == SkShader::kRepeat_TileMode); 2182 GR_STATIC_ASSERT(2 == SkShader::kMirror_TileMode); 2183 return gWrapModes[tm]; 2184 } 2185 2186 void GrGLGpu::bindTexture(int unitIdx, const GrTextureParams& params, GrGLTexture* texture) { 2187 SkASSERT(texture); 2188 2189 // If we created a rt/tex and rendered to it without using a texture and now we're texturing 2190 // from the rt it will still be the last bound texture, but it needs resolving. So keep this 2191 // out of the "last != next" check. 2192 GrGLRenderTarget* texRT = static_cast<GrGLRenderTarget*>(texture->asRenderTarget()); 2193 if (texRT) { 2194 this->onResolveRenderTarget(texRT); 2195 } 2196 2197 uint32_t textureID = texture->getUniqueID(); 2198 if (fHWBoundTextureUniqueIDs[unitIdx] != textureID) { 2199 this->setTextureUnit(unitIdx); 2200 GL_CALL(BindTexture(GR_GL_TEXTURE_2D, texture->textureID())); 2201 fHWBoundTextureUniqueIDs[unitIdx] = textureID; 2202 } 2203 2204 ResetTimestamp timestamp; 2205 const GrGLTexture::TexParams& oldTexParams = texture->getCachedTexParams(×tamp); 2206 bool setAll = timestamp < this->getResetTimestamp(); 2207 GrGLTexture::TexParams newTexParams; 2208 2209 static GrGLenum glMinFilterModes[] = { 2210 GR_GL_NEAREST, 2211 GR_GL_LINEAR, 2212 GR_GL_LINEAR_MIPMAP_LINEAR 2213 }; 2214 static GrGLenum glMagFilterModes[] = { 2215 GR_GL_NEAREST, 2216 GR_GL_LINEAR, 2217 GR_GL_LINEAR 2218 }; 2219 GrTextureParams::FilterMode filterMode = params.filterMode(); 2220 2221 if (GrTextureParams::kMipMap_FilterMode == filterMode) { 2222 if (!this->caps()->mipMapSupport() || GrPixelConfigIsCompressed(texture->config())) { 2223 filterMode = GrTextureParams::kBilerp_FilterMode; 2224 } 2225 } 2226 2227 newTexParams.fMinFilter = glMinFilterModes[filterMode]; 2228 newTexParams.fMagFilter = glMagFilterModes[filterMode]; 2229 2230 if (GrTextureParams::kMipMap_FilterMode == filterMode && 2231 texture->texturePriv().mipMapsAreDirty()) { 2232 GL_CALL(GenerateMipmap(GR_GL_TEXTURE_2D)); 2233 texture->texturePriv().dirtyMipMaps(false); 2234 } 2235 2236 newTexParams.fWrapS = tile_to_gl_wrap(params.getTileModeX()); 2237 newTexParams.fWrapT = tile_to_gl_wrap(params.getTileModeY()); 2238 memcpy(newTexParams.fSwizzleRGBA, 2239 GrGLShaderBuilder::GetTexParamSwizzle(texture->config(), this->glCaps()), 2240 sizeof(newTexParams.fSwizzleRGBA)); 2241 if (setAll || newTexParams.fMagFilter != oldTexParams.fMagFilter) { 2242 this->setTextureUnit(unitIdx); 2243 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 2244 GR_GL_TEXTURE_MAG_FILTER, 2245 newTexParams.fMagFilter)); 2246 } 2247 if (setAll || newTexParams.fMinFilter != oldTexParams.fMinFilter) { 2248 this->setTextureUnit(unitIdx); 2249 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 2250 GR_GL_TEXTURE_MIN_FILTER, 2251 newTexParams.fMinFilter)); 2252 } 2253 if (setAll || newTexParams.fWrapS != oldTexParams.fWrapS) { 2254 this->setTextureUnit(unitIdx); 2255 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 2256 GR_GL_TEXTURE_WRAP_S, 2257 newTexParams.fWrapS)); 2258 } 2259 if (setAll || newTexParams.fWrapT != oldTexParams.fWrapT) { 2260 this->setTextureUnit(unitIdx); 2261 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, 2262 GR_GL_TEXTURE_WRAP_T, 2263 newTexParams.fWrapT)); 2264 } 2265 if (this->glCaps().textureSwizzleSupport() && 2266 (setAll || memcmp(newTexParams.fSwizzleRGBA, 2267 oldTexParams.fSwizzleRGBA, 2268 sizeof(newTexParams.fSwizzleRGBA)))) { 2269 this->setTextureUnit(unitIdx); 2270 if (this->glStandard() == kGLES_GrGLStandard) { 2271 // ES3 added swizzle support but not GL_TEXTURE_SWIZZLE_RGBA. 2272 const GrGLenum* swizzle = newTexParams.fSwizzleRGBA; 2273 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_R, swizzle[0])); 2274 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_G, swizzle[1])); 2275 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_B, swizzle[2])); 2276 GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_A, swizzle[3])); 2277 } else { 2278 GR_STATIC_ASSERT(sizeof(newTexParams.fSwizzleRGBA[0]) == sizeof(GrGLint)); 2279 const GrGLint* swizzle = reinterpret_cast<const GrGLint*>(newTexParams.fSwizzleRGBA); 2280 GL_CALL(TexParameteriv(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_RGBA, swizzle)); 2281 } 2282 } 2283 texture->setCachedTexParams(newTexParams, this->getResetTimestamp()); 2284 } 2285 2286 void GrGLGpu::flushDither(bool dither) { 2287 if (dither) { 2288 if (kYes_TriState != fHWDitherEnabled) { 2289 GL_CALL(Enable(GR_GL_DITHER)); 2290 fHWDitherEnabled = kYes_TriState; 2291 } 2292 } else { 2293 if (kNo_TriState != fHWDitherEnabled) { 2294 GL_CALL(Disable(GR_GL_DITHER)); 2295 fHWDitherEnabled = kNo_TriState; 2296 } 2297 } 2298 } 2299 2300 void GrGLGpu::flushColorWrite(bool writeColor) { 2301 if (!writeColor) { 2302 if (kNo_TriState != fHWWriteToColor) { 2303 GL_CALL(ColorMask(GR_GL_FALSE, GR_GL_FALSE, 2304 GR_GL_FALSE, GR_GL_FALSE)); 2305 fHWWriteToColor = kNo_TriState; 2306 } 2307 } else { 2308 if (kYes_TriState != fHWWriteToColor) { 2309 GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE)); 2310 fHWWriteToColor = kYes_TriState; 2311 } 2312 } 2313 } 2314 2315 void GrGLGpu::flushDrawFace(GrPipelineBuilder::DrawFace face) { 2316 if (fHWDrawFace != face) { 2317 switch (face) { 2318 case GrPipelineBuilder::kCCW_DrawFace: 2319 GL_CALL(Enable(GR_GL_CULL_FACE)); 2320 GL_CALL(CullFace(GR_GL_BACK)); 2321 break; 2322 case GrPipelineBuilder::kCW_DrawFace: 2323 GL_CALL(Enable(GR_GL_CULL_FACE)); 2324 GL_CALL(CullFace(GR_GL_FRONT)); 2325 break; 2326 case GrPipelineBuilder::kBoth_DrawFace: 2327 GL_CALL(Disable(GR_GL_CULL_FACE)); 2328 break; 2329 default: 2330 SkFAIL("Unknown draw face."); 2331 } 2332 fHWDrawFace = face; 2333 } 2334 } 2335 2336 bool GrGLGpu::configToGLFormats(GrPixelConfig config, 2337 bool getSizedInternalFormat, 2338 GrGLenum* internalFormat, 2339 GrGLenum* externalFormat, 2340 GrGLenum* externalType) { 2341 GrGLenum dontCare; 2342 if (NULL == internalFormat) { 2343 internalFormat = &dontCare; 2344 } 2345 if (NULL == externalFormat) { 2346 externalFormat = &dontCare; 2347 } 2348 if (NULL == externalType) { 2349 externalType = &dontCare; 2350 } 2351 2352 if(!this->glCaps().isConfigTexturable(config)) { 2353 return false; 2354 } 2355 2356 switch (config) { 2357 case kRGBA_8888_GrPixelConfig: 2358 *internalFormat = GR_GL_RGBA; 2359 *externalFormat = GR_GL_RGBA; 2360 if (getSizedInternalFormat) { 2361 *internalFormat = GR_GL_RGBA8; 2362 } else { 2363 *internalFormat = GR_GL_RGBA; 2364 } 2365 *externalType = GR_GL_UNSIGNED_BYTE; 2366 break; 2367 case kBGRA_8888_GrPixelConfig: 2368 if (this->glCaps().bgraIsInternalFormat()) { 2369 if (getSizedInternalFormat) { 2370 *internalFormat = GR_GL_BGRA8; 2371 } else { 2372 *internalFormat = GR_GL_BGRA; 2373 } 2374 } else { 2375 if (getSizedInternalFormat) { 2376 *internalFormat = GR_GL_RGBA8; 2377 } else { 2378 *internalFormat = GR_GL_RGBA; 2379 } 2380 } 2381 *externalFormat = GR_GL_BGRA; 2382 *externalType = GR_GL_UNSIGNED_BYTE; 2383 break; 2384 case kSRGBA_8888_GrPixelConfig: 2385 *internalFormat = GR_GL_SRGB_ALPHA; 2386 *externalFormat = GR_GL_SRGB_ALPHA; 2387 if (getSizedInternalFormat) { 2388 *internalFormat = GR_GL_SRGB8_ALPHA8; 2389 } else { 2390 *internalFormat = GR_GL_SRGB_ALPHA; 2391 } 2392 *externalType = GR_GL_UNSIGNED_BYTE; 2393 break; 2394 case kRGB_565_GrPixelConfig: 2395 *internalFormat = GR_GL_RGB; 2396 *externalFormat = GR_GL_RGB; 2397 if (getSizedInternalFormat) { 2398 if (!this->glCaps().ES2CompatibilitySupport()) { 2399 *internalFormat = GR_GL_RGB5; 2400 } else { 2401 *internalFormat = GR_GL_RGB565; 2402 } 2403 } else { 2404 *internalFormat = GR_GL_RGB; 2405 } 2406 *externalType = GR_GL_UNSIGNED_SHORT_5_6_5; 2407 break; 2408 case kRGBA_4444_GrPixelConfig: 2409 *internalFormat = GR_GL_RGBA; 2410 *externalFormat = GR_GL_RGBA; 2411 if (getSizedInternalFormat) { 2412 *internalFormat = GR_GL_RGBA4; 2413 } else { 2414 *internalFormat = GR_GL_RGBA; 2415 } 2416 *externalType = GR_GL_UNSIGNED_SHORT_4_4_4_4; 2417 break; 2418 case kIndex_8_GrPixelConfig: 2419 // no sized/unsized internal format distinction here 2420 *internalFormat = GR_GL_PALETTE8_RGBA8; 2421 break; 2422 case kAlpha_8_GrPixelConfig: 2423 if (this->glCaps().textureRedSupport()) { 2424 *internalFormat = GR_GL_RED; 2425 *externalFormat = GR_GL_RED; 2426 if (getSizedInternalFormat) { 2427 *internalFormat = GR_GL_R8; 2428 } else { 2429 *internalFormat = GR_GL_RED; 2430 } 2431 *externalType = GR_GL_UNSIGNED_BYTE; 2432 } else { 2433 *internalFormat = GR_GL_ALPHA; 2434 *externalFormat = GR_GL_ALPHA; 2435 if (getSizedInternalFormat) { 2436 *internalFormat = GR_GL_ALPHA8; 2437 } else { 2438 *internalFormat = GR_GL_ALPHA; 2439 } 2440 *externalType = GR_GL_UNSIGNED_BYTE; 2441 } 2442 break; 2443 case kETC1_GrPixelConfig: 2444 *internalFormat = GR_GL_COMPRESSED_ETC1_RGB8; 2445 break; 2446 case kLATC_GrPixelConfig: 2447 switch(this->glCaps().latcAlias()) { 2448 case GrGLCaps::kLATC_LATCAlias: 2449 *internalFormat = GR_GL_COMPRESSED_LUMINANCE_LATC1; 2450 break; 2451 case GrGLCaps::kRGTC_LATCAlias: 2452 *internalFormat = GR_GL_COMPRESSED_RED_RGTC1; 2453 break; 2454 case GrGLCaps::k3DC_LATCAlias: 2455 *internalFormat = GR_GL_COMPRESSED_3DC_X; 2456 break; 2457 } 2458 break; 2459 case kR11_EAC_GrPixelConfig: 2460 *internalFormat = GR_GL_COMPRESSED_R11_EAC; 2461 break; 2462 2463 case kASTC_12x12_GrPixelConfig: 2464 *internalFormat = GR_GL_COMPRESSED_RGBA_ASTC_12x12_KHR; 2465 break; 2466 2467 case kRGBA_float_GrPixelConfig: 2468 *internalFormat = GR_GL_RGBA32F; 2469 *externalFormat = GR_GL_RGBA; 2470 *externalType = GR_GL_FLOAT; 2471 break; 2472 2473 case kAlpha_half_GrPixelConfig: 2474 if (this->glCaps().textureRedSupport()) { 2475 if (getSizedInternalFormat) { 2476 *internalFormat = GR_GL_R16F; 2477 } else { 2478 *internalFormat = GR_GL_RED; 2479 } 2480 *externalFormat = GR_GL_RED; 2481 } else { 2482 if (getSizedInternalFormat) { 2483 *internalFormat = GR_GL_ALPHA16F; 2484 } else { 2485 *internalFormat = GR_GL_ALPHA; 2486 } 2487 *externalFormat = GR_GL_ALPHA; 2488 } 2489 if (kGL_GrGLStandard == this->glStandard() || this->glVersion() >= GR_GL_VER(3, 0)) { 2490 *externalType = GR_GL_HALF_FLOAT; 2491 } else { 2492 *externalType = GR_GL_HALF_FLOAT_OES; 2493 } 2494 break; 2495 2496 default: 2497 return false; 2498 } 2499 return true; 2500 } 2501 2502 void GrGLGpu::setTextureUnit(int unit) { 2503 SkASSERT(unit >= 0 && unit < fHWBoundTextureUniqueIDs.count()); 2504 if (unit != fHWActiveTextureUnitIdx) { 2505 GL_CALL(ActiveTexture(GR_GL_TEXTURE0 + unit)); 2506 fHWActiveTextureUnitIdx = unit; 2507 } 2508 } 2509 2510 void GrGLGpu::setScratchTextureUnit() { 2511 // Bind the last texture unit since it is the least likely to be used by GrGLProgram. 2512 int lastUnitIdx = fHWBoundTextureUniqueIDs.count() - 1; 2513 if (lastUnitIdx != fHWActiveTextureUnitIdx) { 2514 GL_CALL(ActiveTexture(GR_GL_TEXTURE0 + lastUnitIdx)); 2515 fHWActiveTextureUnitIdx = lastUnitIdx; 2516 } 2517 // clear out the this field so that if a program does use this unit it will rebind the correct 2518 // texture. 2519 fHWBoundTextureUniqueIDs[lastUnitIdx] = SK_InvalidUniqueID; 2520 } 2521 2522 namespace { 2523 // Determines whether glBlitFramebuffer could be used between src and dst. 2524 inline bool can_blit_framebuffer(const GrSurface* dst, 2525 const GrSurface* src, 2526 const GrGLGpu* gpu) { 2527 if (gpu->glCaps().isConfigRenderable(dst->config(), dst->desc().fSampleCnt > 0) && 2528 gpu->glCaps().isConfigRenderable(src->config(), src->desc().fSampleCnt > 0) && 2529 gpu->glCaps().usesMSAARenderBuffers()) { 2530 // ES3 doesn't allow framebuffer blits when the src has MSAA and the configs don't match 2531 // or the rects are not the same (not just the same size but have the same edges). 2532 if (GrGLCaps::kES_3_0_MSFBOType == gpu->glCaps().msFBOType() && 2533 (src->desc().fSampleCnt > 0 || src->config() != dst->config())) { 2534 return false; 2535 } 2536 return true; 2537 } else { 2538 return false; 2539 } 2540 } 2541 2542 inline bool can_copy_texsubimage(const GrSurface* dst, 2543 const GrSurface* src, 2544 const GrGLGpu* gpu) { 2545 // Table 3.9 of the ES2 spec indicates the supported formats with CopyTexSubImage 2546 // and BGRA isn't in the spec. There doesn't appear to be any extension that adds it. Perhaps 2547 // many drivers would allow it to work, but ANGLE does not. 2548 if (kGLES_GrGLStandard == gpu->glStandard() && gpu->glCaps().bgraIsInternalFormat() && 2549 (kBGRA_8888_GrPixelConfig == dst->config() || kBGRA_8888_GrPixelConfig == src->config())) { 2550 return false; 2551 } 2552 const GrGLRenderTarget* dstRT = static_cast<const GrGLRenderTarget*>(dst->asRenderTarget()); 2553 // If dst is multisampled (and uses an extension where there is a separate MSAA renderbuffer) 2554 // then we don't want to copy to the texture but to the MSAA buffer. 2555 if (dstRT && dstRT->renderFBOID() != dstRT->textureFBOID()) { 2556 return false; 2557 } 2558 const GrGLRenderTarget* srcRT = static_cast<const GrGLRenderTarget*>(src->asRenderTarget()); 2559 // If the src is multisampled (and uses an extension where there is a separate MSAA 2560 // renderbuffer) then it is an invalid operation to call CopyTexSubImage 2561 if (srcRT && srcRT->renderFBOID() != srcRT->textureFBOID()) { 2562 return false; 2563 } 2564 if (gpu->glCaps().isConfigRenderable(src->config(), src->desc().fSampleCnt > 0) && 2565 dst->asTexture() && 2566 dst->origin() == src->origin() && 2567 !GrPixelConfigIsCompressed(src->config())) { 2568 return true; 2569 } else { 2570 return false; 2571 } 2572 } 2573 2574 } 2575 2576 // If a temporary FBO was created, its non-zero ID is returned. The viewport that the copy rect is 2577 // relative to is output. 2578 GrGLuint GrGLGpu::bindSurfaceAsFBO(GrSurface* surface, GrGLenum fboTarget, GrGLIRect* viewport, 2579 TempFBOTarget tempFBOTarget) { 2580 GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(surface->asRenderTarget()); 2581 if (NULL == rt) { 2582 SkASSERT(surface->asTexture()); 2583 GrGLuint texID = static_cast<GrGLTexture*>(surface->asTexture())->textureID(); 2584 GrGLuint* tempFBOID; 2585 tempFBOID = kSrc_TempFBOTarget == tempFBOTarget ? &fTempSrcFBOID : &fTempDstFBOID; 2586 2587 if (0 == *tempFBOID) { 2588 GR_GL_CALL(this->glInterface(), GenFramebuffers(1, tempFBOID)); 2589 } 2590 2591 fStats.incRenderTargetBinds(); 2592 GR_GL_CALL(this->glInterface(), BindFramebuffer(fboTarget, *tempFBOID)); 2593 GR_GL_CALL(this->glInterface(), FramebufferTexture2D(fboTarget, 2594 GR_GL_COLOR_ATTACHMENT0, 2595 GR_GL_TEXTURE_2D, 2596 texID, 2597 0)); 2598 viewport->fLeft = 0; 2599 viewport->fBottom = 0; 2600 viewport->fWidth = surface->width(); 2601 viewport->fHeight = surface->height(); 2602 return *tempFBOID; 2603 } else { 2604 GrGLuint tempFBOID = 0; 2605 fStats.incRenderTargetBinds(); 2606 GR_GL_CALL(this->glInterface(), BindFramebuffer(fboTarget, rt->renderFBOID())); 2607 *viewport = rt->getViewport(); 2608 return tempFBOID; 2609 } 2610 } 2611 2612 void GrGLGpu::unbindTextureFromFBO(GrGLenum fboTarget) { 2613 GR_GL_CALL(this->glInterface(), FramebufferTexture2D(fboTarget, 2614 GR_GL_COLOR_ATTACHMENT0, 2615 GR_GL_TEXTURE_2D, 2616 0, 2617 0)); 2618 } 2619 2620 bool GrGLGpu::initCopySurfaceDstDesc(const GrSurface* src, GrSurfaceDesc* desc) { 2621 // In here we look for opportunities to use CopyTexSubImage, or fbo blit. If neither are 2622 // possible and we return false to fallback to creating a render target dst for render-to- 2623 // texture. This code prefers CopyTexSubImage to fbo blit and avoids triggering temporary fbo 2624 // creation. It isn't clear that avoiding temporary fbo creation is actually optimal. 2625 2626 // Check for format issues with glCopyTexSubImage2D 2627 if (kGLES_GrGLStandard == this->glStandard() && this->glCaps().bgraIsInternalFormat() && 2628 kBGRA_8888_GrPixelConfig == src->config()) { 2629 // glCopyTexSubImage2D doesn't work with this config. If the bgra can be used with fbo blit 2630 // then we set up for that, otherwise fail. 2631 if (this->caps()->isConfigRenderable(kBGRA_8888_GrPixelConfig, false)) { 2632 desc->fOrigin = kDefault_GrSurfaceOrigin; 2633 desc->fFlags = kRenderTarget_GrSurfaceFlag; 2634 desc->fConfig = kBGRA_8888_GrPixelConfig; 2635 return true; 2636 } 2637 return false; 2638 } else if (NULL == src->asRenderTarget()) { 2639 // CopyTexSubImage2D or fbo blit would require creating a temp fbo for the src. 2640 return false; 2641 } 2642 2643 const GrGLRenderTarget* srcRT = static_cast<const GrGLRenderTarget*>(src->asRenderTarget()); 2644 if (srcRT && srcRT->renderFBOID() != srcRT->textureFBOID()) { 2645 // It's illegal to call CopyTexSubImage2D on a MSAA renderbuffer. Set up for FBO blit or 2646 // fail. 2647 if (this->caps()->isConfigRenderable(src->config(), false)) { 2648 desc->fOrigin = kDefault_GrSurfaceOrigin; 2649 desc->fFlags = kRenderTarget_GrSurfaceFlag; 2650 desc->fConfig = src->config(); 2651 return true; 2652 } 2653 return false; 2654 } 2655 2656 // We'll do a CopyTexSubImage. Make the dst a plain old texture. 2657 desc->fConfig = src->config(); 2658 desc->fOrigin = src->origin(); 2659 desc->fFlags = kNone_GrSurfaceFlags; 2660 return true; 2661 } 2662 2663 bool GrGLGpu::copySurface(GrSurface* dst, 2664 GrSurface* src, 2665 const SkIRect& srcRect, 2666 const SkIPoint& dstPoint) { 2667 bool copied = false; 2668 if (can_copy_texsubimage(dst, src, this)) { 2669 GrGLuint srcFBO; 2670 GrGLIRect srcVP; 2671 srcFBO = this->bindSurfaceAsFBO(src, GR_GL_FRAMEBUFFER, &srcVP, kSrc_TempFBOTarget); 2672 GrGLTexture* dstTex = static_cast<GrGLTexture*>(dst->asTexture()); 2673 SkASSERT(dstTex); 2674 // We modified the bound FBO 2675 fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID; 2676 GrGLIRect srcGLRect; 2677 srcGLRect.setRelativeTo(srcVP, 2678 srcRect.fLeft, 2679 srcRect.fTop, 2680 srcRect.width(), 2681 srcRect.height(), 2682 src->origin()); 2683 2684 this->setScratchTextureUnit(); 2685 GL_CALL(BindTexture(GR_GL_TEXTURE_2D, dstTex->textureID())); 2686 GrGLint dstY; 2687 if (kBottomLeft_GrSurfaceOrigin == dst->origin()) { 2688 dstY = dst->height() - (dstPoint.fY + srcGLRect.fHeight); 2689 } else { 2690 dstY = dstPoint.fY; 2691 } 2692 GL_CALL(CopyTexSubImage2D(GR_GL_TEXTURE_2D, 0, 2693 dstPoint.fX, dstY, 2694 srcGLRect.fLeft, srcGLRect.fBottom, 2695 srcGLRect.fWidth, srcGLRect.fHeight)); 2696 copied = true; 2697 if (srcFBO) { 2698 this->unbindTextureFromFBO(GR_GL_FRAMEBUFFER); 2699 } 2700 } else if (can_blit_framebuffer(dst, src, this)) { 2701 SkIRect dstRect = SkIRect::MakeXYWH(dstPoint.fX, dstPoint.fY, 2702 srcRect.width(), srcRect.height()); 2703 bool selfOverlap = false; 2704 if (dst == src) { 2705 selfOverlap = SkIRect::IntersectsNoEmptyCheck(dstRect, srcRect); 2706 } 2707 2708 if (!selfOverlap) { 2709 GrGLuint dstFBO; 2710 GrGLuint srcFBO; 2711 GrGLIRect dstVP; 2712 GrGLIRect srcVP; 2713 dstFBO = this->bindSurfaceAsFBO(dst, GR_GL_DRAW_FRAMEBUFFER, &dstVP, 2714 kDst_TempFBOTarget); 2715 srcFBO = this->bindSurfaceAsFBO(src, GR_GL_READ_FRAMEBUFFER, &srcVP, 2716 kSrc_TempFBOTarget); 2717 // We modified the bound FBO 2718 fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID; 2719 GrGLIRect srcGLRect; 2720 GrGLIRect dstGLRect; 2721 srcGLRect.setRelativeTo(srcVP, 2722 srcRect.fLeft, 2723 srcRect.fTop, 2724 srcRect.width(), 2725 srcRect.height(), 2726 src->origin()); 2727 dstGLRect.setRelativeTo(dstVP, 2728 dstRect.fLeft, 2729 dstRect.fTop, 2730 dstRect.width(), 2731 dstRect.height(), 2732 dst->origin()); 2733 2734 // BlitFrameBuffer respects the scissor, so disable it. 2735 this->disableScissor(); 2736 2737 GrGLint srcY0; 2738 GrGLint srcY1; 2739 // Does the blit need to y-mirror or not? 2740 if (src->origin() == dst->origin()) { 2741 srcY0 = srcGLRect.fBottom; 2742 srcY1 = srcGLRect.fBottom + srcGLRect.fHeight; 2743 } else { 2744 srcY0 = srcGLRect.fBottom + srcGLRect.fHeight; 2745 srcY1 = srcGLRect.fBottom; 2746 } 2747 GL_CALL(BlitFramebuffer(srcGLRect.fLeft, 2748 srcY0, 2749 srcGLRect.fLeft + srcGLRect.fWidth, 2750 srcY1, 2751 dstGLRect.fLeft, 2752 dstGLRect.fBottom, 2753 dstGLRect.fLeft + dstGLRect.fWidth, 2754 dstGLRect.fBottom + dstGLRect.fHeight, 2755 GR_GL_COLOR_BUFFER_BIT, GR_GL_NEAREST)); 2756 if (dstFBO) { 2757 this->unbindTextureFromFBO(GR_GL_DRAW_FRAMEBUFFER); 2758 } 2759 if (srcFBO) { 2760 this->unbindTextureFromFBO(GR_GL_READ_FRAMEBUFFER); 2761 } 2762 copied = true; 2763 } 2764 } 2765 return copied; 2766 } 2767 2768 bool GrGLGpu::canCopySurface(const GrSurface* dst, 2769 const GrSurface* src, 2770 const SkIRect& srcRect, 2771 const SkIPoint& dstPoint) { 2772 // This mirrors the logic in onCopySurface. 2773 if (can_copy_texsubimage(dst, src, this)) { 2774 return true; 2775 } 2776 if (can_blit_framebuffer(dst, src, this)) { 2777 if (dst == src) { 2778 SkIRect dstRect = SkIRect::MakeXYWH(dstPoint.fX, dstPoint.fY, 2779 srcRect.width(), srcRect.height()); 2780 if(!SkIRect::IntersectsNoEmptyCheck(dstRect, srcRect)) { 2781 return true; 2782 } 2783 } else { 2784 return true; 2785 } 2786 } 2787 return false; 2788 } 2789 2790 void GrGLGpu::xferBarrier(GrRenderTarget* rt, GrXferBarrierType type) { 2791 switch (type) { 2792 case kTexture_GrXferBarrierType: { 2793 GrGLRenderTarget* glrt = static_cast<GrGLRenderTarget*>(rt); 2794 if (glrt->textureFBOID() != glrt->renderFBOID()) { 2795 // The render target uses separate storage so no need for glTextureBarrier. 2796 // FIXME: The render target will resolve automatically when its texture is bound, 2797 // but we could resolve only the bounds that will be read if we do it here instead. 2798 return; 2799 } 2800 SkASSERT(this->caps()->textureBarrierSupport()); 2801 GL_CALL(TextureBarrier()); 2802 return; 2803 } 2804 case kBlend_GrXferBarrierType: 2805 SkASSERT(GrDrawTargetCaps::kAdvanced_BlendEquationSupport == 2806 this->caps()->blendEquationSupport()); 2807 GL_CALL(BlendBarrier()); 2808 return; 2809 } 2810 } 2811 2812 void GrGLGpu::didAddGpuTraceMarker() { 2813 if (this->caps()->gpuTracingSupport()) { 2814 const GrTraceMarkerSet& markerArray = this->getActiveTraceMarkers(); 2815 SkString markerString = markerArray.toStringLast(); 2816 #if GR_FORCE_GPU_TRACE_DEBUGGING 2817 SkDebugf("%s\n", markerString.c_str()); 2818 #else 2819 GL_CALL(PushGroupMarker(0, markerString.c_str())); 2820 #endif 2821 } 2822 } 2823 2824 void GrGLGpu::didRemoveGpuTraceMarker() { 2825 if (this->caps()->gpuTracingSupport()) { 2826 #if GR_FORCE_GPU_TRACE_DEBUGGING 2827 SkDebugf("Pop trace marker.\n"); 2828 #else 2829 GL_CALL(PopGroupMarker()); 2830 #endif 2831 } 2832 } 2833 2834 /////////////////////////////////////////////////////////////////////////////// 2835 2836 GrGLAttribArrayState* GrGLGpu::HWGeometryState::bindArrayAndBuffersToDraw( 2837 GrGLGpu* gpu, 2838 const GrGLVertexBuffer* vbuffer, 2839 const GrGLIndexBuffer* ibuffer) { 2840 SkASSERT(vbuffer); 2841 GrGLAttribArrayState* attribState; 2842 2843 // We use a vertex array if we're on a core profile and the verts are in a VBO. 2844 if (gpu->glCaps().isCoreProfile() && !vbuffer->isCPUBacked()) { 2845 if (!fVBOVertexArray) { 2846 GrGLuint arrayID; 2847 GR_GL_CALL(gpu->glInterface(), GenVertexArrays(1, &arrayID)); 2848 int attrCount = gpu->glCaps().maxVertexAttributes(); 2849 fVBOVertexArray = SkNEW_ARGS(GrGLVertexArray, (arrayID, attrCount)); 2850 } 2851 attribState = fVBOVertexArray->bindWithIndexBuffer(gpu, ibuffer); 2852 } else { 2853 if (ibuffer) { 2854 this->setIndexBufferIDOnDefaultVertexArray(gpu, ibuffer->bufferID()); 2855 } else { 2856 this->setVertexArrayID(gpu, 0); 2857 } 2858 int attrCount = gpu->glCaps().maxVertexAttributes(); 2859 if (fDefaultVertexArrayAttribState.count() != attrCount) { 2860 fDefaultVertexArrayAttribState.resize(attrCount); 2861 } 2862 attribState = &fDefaultVertexArrayAttribState; 2863 } 2864 return attribState; 2865 } 2866
