1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // Context.cpp: Implements the es2::Context class, managing all GL state and performing 16 // rendering operations. It is the GLES2 specific implementation of EGLContext. 17 18 #include "Context.h" 19 20 #include "main.h" 21 #include "mathutil.h" 22 #include "utilities.h" 23 #include "ResourceManager.h" 24 #include "Buffer.h" 25 #include "Fence.h" 26 #include "Framebuffer.h" 27 #include "Program.h" 28 #include "Query.h" 29 #include "Renderbuffer.h" 30 #include "Sampler.h" 31 #include "Shader.h" 32 #include "Texture.h" 33 #include "TransformFeedback.h" 34 #include "VertexArray.h" 35 #include "VertexDataManager.h" 36 #include "IndexDataManager.h" 37 #include "libEGL/Display.h" 38 #include "libEGL/Surface.h" 39 #include "Common/Half.hpp" 40 41 #include <EGL/eglext.h> 42 43 namespace es2 44 { 45 Context::Context(const egl::Config *config, const Context *shareContext, EGLint clientVersion) 46 : clientVersion(clientVersion), mConfig(config) 47 { 48 sw::Context *context = new sw::Context(); 49 device = new es2::Device(context); 50 51 setClearColor(0.0f, 0.0f, 0.0f, 0.0f); 52 53 mState.depthClearValue = 1.0f; 54 mState.stencilClearValue = 0; 55 56 mState.cullFaceEnabled = false; 57 mState.cullMode = GL_BACK; 58 mState.frontFace = GL_CCW; 59 mState.depthTestEnabled = false; 60 mState.depthFunc = GL_LESS; 61 mState.blendEnabled = false; 62 mState.sourceBlendRGB = GL_ONE; 63 mState.sourceBlendAlpha = GL_ONE; 64 mState.destBlendRGB = GL_ZERO; 65 mState.destBlendAlpha = GL_ZERO; 66 mState.blendEquationRGB = GL_FUNC_ADD; 67 mState.blendEquationAlpha = GL_FUNC_ADD; 68 mState.blendColor.red = 0; 69 mState.blendColor.green = 0; 70 mState.blendColor.blue = 0; 71 mState.blendColor.alpha = 0; 72 mState.stencilTestEnabled = false; 73 mState.stencilFunc = GL_ALWAYS; 74 mState.stencilRef = 0; 75 mState.stencilMask = -1; 76 mState.stencilWritemask = -1; 77 mState.stencilBackFunc = GL_ALWAYS; 78 mState.stencilBackRef = 0; 79 mState.stencilBackMask = - 1; 80 mState.stencilBackWritemask = -1; 81 mState.stencilFail = GL_KEEP; 82 mState.stencilPassDepthFail = GL_KEEP; 83 mState.stencilPassDepthPass = GL_KEEP; 84 mState.stencilBackFail = GL_KEEP; 85 mState.stencilBackPassDepthFail = GL_KEEP; 86 mState.stencilBackPassDepthPass = GL_KEEP; 87 mState.polygonOffsetFillEnabled = false; 88 mState.polygonOffsetFactor = 0.0f; 89 mState.polygonOffsetUnits = 0.0f; 90 mState.sampleAlphaToCoverageEnabled = false; 91 mState.sampleCoverageEnabled = false; 92 mState.sampleCoverageValue = 1.0f; 93 mState.sampleCoverageInvert = false; 94 mState.scissorTestEnabled = false; 95 mState.ditherEnabled = true; 96 mState.primitiveRestartFixedIndexEnabled = false; 97 mState.rasterizerDiscardEnabled = false; 98 mState.generateMipmapHint = GL_DONT_CARE; 99 mState.fragmentShaderDerivativeHint = GL_DONT_CARE; 100 101 mState.lineWidth = 1.0f; 102 103 mState.viewportX = 0; 104 mState.viewportY = 0; 105 mState.viewportWidth = 0; 106 mState.viewportHeight = 0; 107 mState.zNear = 0.0f; 108 mState.zFar = 1.0f; 109 110 mState.scissorX = 0; 111 mState.scissorY = 0; 112 mState.scissorWidth = 0; 113 mState.scissorHeight = 0; 114 115 mState.colorMaskRed = true; 116 mState.colorMaskGreen = true; 117 mState.colorMaskBlue = true; 118 mState.colorMaskAlpha = true; 119 mState.depthMask = true; 120 121 if(shareContext) 122 { 123 mResourceManager = shareContext->mResourceManager; 124 mResourceManager->addRef(); 125 } 126 else 127 { 128 mResourceManager = new ResourceManager(); 129 } 130 131 // [OpenGL ES 2.0.24] section 3.7 page 83: 132 // In the initial state, TEXTURE_2D and TEXTURE_CUBE_MAP have twodimensional 133 // and cube map texture state vectors respectively associated with them. 134 // In order that access to these initial textures not be lost, they are treated as texture 135 // objects all of whose names are 0. 136 137 mTexture2DZero = new Texture2D(0); 138 mTexture3DZero = new Texture3D(0); 139 mTexture2DArrayZero = new Texture2DArray(0); 140 mTextureCubeMapZero = new TextureCubeMap(0); 141 mTextureExternalZero = new TextureExternal(0); 142 143 mState.activeSampler = 0; 144 bindVertexArray(0); 145 bindArrayBuffer(0); 146 bindElementArrayBuffer(0); 147 bindTextureCubeMap(0); 148 bindTexture2D(0); 149 bindReadFramebuffer(0); 150 bindDrawFramebuffer(0); 151 bindRenderbuffer(0); 152 bindGenericUniformBuffer(0); 153 bindTransformFeedback(0); 154 155 mState.currentProgram = 0; 156 157 mState.packAlignment = 4; 158 mState.unpackInfo.alignment = 4; 159 mState.packRowLength = 0; 160 mState.packImageHeight = 0; 161 mState.packSkipPixels = 0; 162 mState.packSkipRows = 0; 163 mState.packSkipImages = 0; 164 mState.unpackInfo.rowLength = 0; 165 mState.unpackInfo.imageHeight = 0; 166 mState.unpackInfo.skipPixels = 0; 167 mState.unpackInfo.skipRows = 0; 168 mState.unpackInfo.skipImages = 0; 169 170 mVertexDataManager = nullptr; 171 mIndexDataManager = nullptr; 172 173 mInvalidEnum = false; 174 mInvalidValue = false; 175 mInvalidOperation = false; 176 mOutOfMemory = false; 177 mInvalidFramebufferOperation = false; 178 179 mHasBeenCurrent = false; 180 181 markAllStateDirty(); 182 } 183 184 Context::~Context() 185 { 186 if(mState.currentProgram != 0) 187 { 188 Program *programObject = mResourceManager->getProgram(mState.currentProgram); 189 if(programObject) 190 { 191 programObject->release(); 192 } 193 mState.currentProgram = 0; 194 } 195 196 while(!mFramebufferNameSpace.empty()) 197 { 198 deleteFramebuffer(mFramebufferNameSpace.firstName()); 199 } 200 201 while(!mFenceNameSpace.empty()) 202 { 203 deleteFence(mFenceNameSpace.firstName()); 204 } 205 206 while(!mQueryNameSpace.empty()) 207 { 208 deleteQuery(mQueryNameSpace.firstName()); 209 } 210 211 while(!mVertexArrayNameSpace.empty()) 212 { 213 deleteVertexArray(mVertexArrayNameSpace.firstName()); 214 } 215 216 while(!mTransformFeedbackNameSpace.empty()) 217 { 218 deleteTransformFeedback(mTransformFeedbackNameSpace.firstName()); 219 } 220 221 for(int type = 0; type < TEXTURE_TYPE_COUNT; type++) 222 { 223 for(int sampler = 0; sampler < MAX_COMBINED_TEXTURE_IMAGE_UNITS; sampler++) 224 { 225 mState.samplerTexture[type][sampler] = nullptr; 226 } 227 } 228 229 for(int i = 0; i < MAX_VERTEX_ATTRIBS; i++) 230 { 231 mState.vertexAttribute[i].mBoundBuffer = nullptr; 232 } 233 234 for(int i = 0; i < QUERY_TYPE_COUNT; i++) 235 { 236 mState.activeQuery[i] = nullptr; 237 } 238 239 mState.arrayBuffer = nullptr; 240 mState.copyReadBuffer = nullptr; 241 mState.copyWriteBuffer = nullptr; 242 mState.pixelPackBuffer = nullptr; 243 mState.pixelUnpackBuffer = nullptr; 244 mState.genericUniformBuffer = nullptr; 245 mState.renderbuffer = nullptr; 246 247 for(int i = 0; i < MAX_COMBINED_TEXTURE_IMAGE_UNITS; ++i) 248 { 249 mState.sampler[i] = nullptr; 250 } 251 252 mTexture2DZero = nullptr; 253 mTexture3DZero = nullptr; 254 mTexture2DArrayZero = nullptr; 255 mTextureCubeMapZero = nullptr; 256 mTextureExternalZero = nullptr; 257 258 delete mVertexDataManager; 259 delete mIndexDataManager; 260 261 mResourceManager->release(); 262 delete device; 263 } 264 265 void Context::makeCurrent(egl::Surface *surface) 266 { 267 if(!mHasBeenCurrent) 268 { 269 mVertexDataManager = new VertexDataManager(this); 270 mIndexDataManager = new IndexDataManager(); 271 272 mState.viewportX = 0; 273 mState.viewportY = 0; 274 mState.viewportWidth = surface->getWidth(); 275 mState.viewportHeight = surface->getHeight(); 276 277 mState.scissorX = 0; 278 mState.scissorY = 0; 279 mState.scissorWidth = surface->getWidth(); 280 mState.scissorHeight = surface->getHeight(); 281 282 mHasBeenCurrent = true; 283 } 284 285 // Wrap the existing resources into GL objects and assign them to the '0' names 286 egl::Image *defaultRenderTarget = surface->getRenderTarget(); 287 egl::Image *depthStencil = surface->getDepthStencil(); 288 289 Colorbuffer *colorbufferZero = new Colorbuffer(defaultRenderTarget); 290 DepthStencilbuffer *depthStencilbufferZero = new DepthStencilbuffer(depthStencil); 291 Framebuffer *framebufferZero = new DefaultFramebuffer(colorbufferZero, depthStencilbufferZero); 292 293 setFramebufferZero(framebufferZero); 294 295 if(defaultRenderTarget) 296 { 297 defaultRenderTarget->release(); 298 } 299 300 if(depthStencil) 301 { 302 depthStencil->release(); 303 } 304 305 markAllStateDirty(); 306 } 307 308 EGLint Context::getClientVersion() const 309 { 310 return clientVersion; 311 } 312 313 // This function will set all of the state-related dirty flags, so that all state is set during next pre-draw. 314 void Context::markAllStateDirty() 315 { 316 mAppliedProgramSerial = 0; 317 318 mDepthStateDirty = true; 319 mMaskStateDirty = true; 320 mBlendStateDirty = true; 321 mStencilStateDirty = true; 322 mPolygonOffsetStateDirty = true; 323 mSampleStateDirty = true; 324 mDitherStateDirty = true; 325 mFrontFaceDirty = true; 326 } 327 328 void Context::setClearColor(float red, float green, float blue, float alpha) 329 { 330 mState.colorClearValue.red = red; 331 mState.colorClearValue.green = green; 332 mState.colorClearValue.blue = blue; 333 mState.colorClearValue.alpha = alpha; 334 } 335 336 void Context::setClearDepth(float depth) 337 { 338 mState.depthClearValue = depth; 339 } 340 341 void Context::setClearStencil(int stencil) 342 { 343 mState.stencilClearValue = stencil; 344 } 345 346 void Context::setCullFaceEnabled(bool enabled) 347 { 348 mState.cullFaceEnabled = enabled; 349 } 350 351 bool Context::isCullFaceEnabled() const 352 { 353 return mState.cullFaceEnabled; 354 } 355 356 void Context::setCullMode(GLenum mode) 357 { 358 mState.cullMode = mode; 359 } 360 361 void Context::setFrontFace(GLenum front) 362 { 363 if(mState.frontFace != front) 364 { 365 mState.frontFace = front; 366 mFrontFaceDirty = true; 367 } 368 } 369 370 void Context::setDepthTestEnabled(bool enabled) 371 { 372 if(mState.depthTestEnabled != enabled) 373 { 374 mState.depthTestEnabled = enabled; 375 mDepthStateDirty = true; 376 } 377 } 378 379 bool Context::isDepthTestEnabled() const 380 { 381 return mState.depthTestEnabled; 382 } 383 384 void Context::setDepthFunc(GLenum depthFunc) 385 { 386 if(mState.depthFunc != depthFunc) 387 { 388 mState.depthFunc = depthFunc; 389 mDepthStateDirty = true; 390 } 391 } 392 393 void Context::setDepthRange(float zNear, float zFar) 394 { 395 mState.zNear = zNear; 396 mState.zFar = zFar; 397 } 398 399 void Context::setBlendEnabled(bool enabled) 400 { 401 if(mState.blendEnabled != enabled) 402 { 403 mState.blendEnabled = enabled; 404 mBlendStateDirty = true; 405 } 406 } 407 408 bool Context::isBlendEnabled() const 409 { 410 return mState.blendEnabled; 411 } 412 413 void Context::setBlendFactors(GLenum sourceRGB, GLenum destRGB, GLenum sourceAlpha, GLenum destAlpha) 414 { 415 if(mState.sourceBlendRGB != sourceRGB || 416 mState.sourceBlendAlpha != sourceAlpha || 417 mState.destBlendRGB != destRGB || 418 mState.destBlendAlpha != destAlpha) 419 { 420 mState.sourceBlendRGB = sourceRGB; 421 mState.destBlendRGB = destRGB; 422 mState.sourceBlendAlpha = sourceAlpha; 423 mState.destBlendAlpha = destAlpha; 424 mBlendStateDirty = true; 425 } 426 } 427 428 void Context::setBlendColor(float red, float green, float blue, float alpha) 429 { 430 if(mState.blendColor.red != red || 431 mState.blendColor.green != green || 432 mState.blendColor.blue != blue || 433 mState.blendColor.alpha != alpha) 434 { 435 mState.blendColor.red = red; 436 mState.blendColor.green = green; 437 mState.blendColor.blue = blue; 438 mState.blendColor.alpha = alpha; 439 mBlendStateDirty = true; 440 } 441 } 442 443 void Context::setBlendEquation(GLenum rgbEquation, GLenum alphaEquation) 444 { 445 if(mState.blendEquationRGB != rgbEquation || 446 mState.blendEquationAlpha != alphaEquation) 447 { 448 mState.blendEquationRGB = rgbEquation; 449 mState.blendEquationAlpha = alphaEquation; 450 mBlendStateDirty = true; 451 } 452 } 453 454 void Context::setStencilTestEnabled(bool enabled) 455 { 456 if(mState.stencilTestEnabled != enabled) 457 { 458 mState.stencilTestEnabled = enabled; 459 mStencilStateDirty = true; 460 } 461 } 462 463 bool Context::isStencilTestEnabled() const 464 { 465 return mState.stencilTestEnabled; 466 } 467 468 void Context::setStencilParams(GLenum stencilFunc, GLint stencilRef, GLuint stencilMask) 469 { 470 if(mState.stencilFunc != stencilFunc || 471 mState.stencilRef != stencilRef || 472 mState.stencilMask != stencilMask) 473 { 474 mState.stencilFunc = stencilFunc; 475 mState.stencilRef = (stencilRef > 0) ? stencilRef : 0; 476 mState.stencilMask = stencilMask; 477 mStencilStateDirty = true; 478 } 479 } 480 481 void Context::setStencilBackParams(GLenum stencilBackFunc, GLint stencilBackRef, GLuint stencilBackMask) 482 { 483 if(mState.stencilBackFunc != stencilBackFunc || 484 mState.stencilBackRef != stencilBackRef || 485 mState.stencilBackMask != stencilBackMask) 486 { 487 mState.stencilBackFunc = stencilBackFunc; 488 mState.stencilBackRef = (stencilBackRef > 0) ? stencilBackRef : 0; 489 mState.stencilBackMask = stencilBackMask; 490 mStencilStateDirty = true; 491 } 492 } 493 494 void Context::setStencilWritemask(GLuint stencilWritemask) 495 { 496 if(mState.stencilWritemask != stencilWritemask) 497 { 498 mState.stencilWritemask = stencilWritemask; 499 mStencilStateDirty = true; 500 } 501 } 502 503 void Context::setStencilBackWritemask(GLuint stencilBackWritemask) 504 { 505 if(mState.stencilBackWritemask != stencilBackWritemask) 506 { 507 mState.stencilBackWritemask = stencilBackWritemask; 508 mStencilStateDirty = true; 509 } 510 } 511 512 void Context::setStencilOperations(GLenum stencilFail, GLenum stencilPassDepthFail, GLenum stencilPassDepthPass) 513 { 514 if(mState.stencilFail != stencilFail || 515 mState.stencilPassDepthFail != stencilPassDepthFail || 516 mState.stencilPassDepthPass != stencilPassDepthPass) 517 { 518 mState.stencilFail = stencilFail; 519 mState.stencilPassDepthFail = stencilPassDepthFail; 520 mState.stencilPassDepthPass = stencilPassDepthPass; 521 mStencilStateDirty = true; 522 } 523 } 524 525 void Context::setStencilBackOperations(GLenum stencilBackFail, GLenum stencilBackPassDepthFail, GLenum stencilBackPassDepthPass) 526 { 527 if(mState.stencilBackFail != stencilBackFail || 528 mState.stencilBackPassDepthFail != stencilBackPassDepthFail || 529 mState.stencilBackPassDepthPass != stencilBackPassDepthPass) 530 { 531 mState.stencilBackFail = stencilBackFail; 532 mState.stencilBackPassDepthFail = stencilBackPassDepthFail; 533 mState.stencilBackPassDepthPass = stencilBackPassDepthPass; 534 mStencilStateDirty = true; 535 } 536 } 537 538 void Context::setPolygonOffsetFillEnabled(bool enabled) 539 { 540 if(mState.polygonOffsetFillEnabled != enabled) 541 { 542 mState.polygonOffsetFillEnabled = enabled; 543 mPolygonOffsetStateDirty = true; 544 } 545 } 546 547 bool Context::isPolygonOffsetFillEnabled() const 548 { 549 return mState.polygonOffsetFillEnabled; 550 } 551 552 void Context::setPolygonOffsetParams(GLfloat factor, GLfloat units) 553 { 554 if(mState.polygonOffsetFactor != factor || 555 mState.polygonOffsetUnits != units) 556 { 557 mState.polygonOffsetFactor = factor; 558 mState.polygonOffsetUnits = units; 559 mPolygonOffsetStateDirty = true; 560 } 561 } 562 563 void Context::setSampleAlphaToCoverageEnabled(bool enabled) 564 { 565 if(mState.sampleAlphaToCoverageEnabled != enabled) 566 { 567 mState.sampleAlphaToCoverageEnabled = enabled; 568 mSampleStateDirty = true; 569 } 570 } 571 572 bool Context::isSampleAlphaToCoverageEnabled() const 573 { 574 return mState.sampleAlphaToCoverageEnabled; 575 } 576 577 void Context::setSampleCoverageEnabled(bool enabled) 578 { 579 if(mState.sampleCoverageEnabled != enabled) 580 { 581 mState.sampleCoverageEnabled = enabled; 582 mSampleStateDirty = true; 583 } 584 } 585 586 bool Context::isSampleCoverageEnabled() const 587 { 588 return mState.sampleCoverageEnabled; 589 } 590 591 void Context::setSampleCoverageParams(GLclampf value, bool invert) 592 { 593 if(mState.sampleCoverageValue != value || 594 mState.sampleCoverageInvert != invert) 595 { 596 mState.sampleCoverageValue = value; 597 mState.sampleCoverageInvert = invert; 598 mSampleStateDirty = true; 599 } 600 } 601 602 void Context::setScissorTestEnabled(bool enabled) 603 { 604 mState.scissorTestEnabled = enabled; 605 } 606 607 bool Context::isScissorTestEnabled() const 608 { 609 return mState.scissorTestEnabled; 610 } 611 612 void Context::setDitherEnabled(bool enabled) 613 { 614 if(mState.ditherEnabled != enabled) 615 { 616 mState.ditherEnabled = enabled; 617 mDitherStateDirty = true; 618 } 619 } 620 621 bool Context::isDitherEnabled() const 622 { 623 return mState.ditherEnabled; 624 } 625 626 void Context::setPrimitiveRestartFixedIndexEnabled(bool enabled) 627 { 628 UNIMPLEMENTED(); 629 mState.primitiveRestartFixedIndexEnabled = enabled; 630 } 631 632 bool Context::isPrimitiveRestartFixedIndexEnabled() const 633 { 634 return mState.primitiveRestartFixedIndexEnabled; 635 } 636 637 void Context::setRasterizerDiscardEnabled(bool enabled) 638 { 639 mState.rasterizerDiscardEnabled = enabled; 640 } 641 642 bool Context::isRasterizerDiscardEnabled() const 643 { 644 return mState.rasterizerDiscardEnabled; 645 } 646 647 void Context::setLineWidth(GLfloat width) 648 { 649 mState.lineWidth = width; 650 device->setLineWidth(clamp(width, ALIASED_LINE_WIDTH_RANGE_MIN, ALIASED_LINE_WIDTH_RANGE_MAX)); 651 } 652 653 void Context::setGenerateMipmapHint(GLenum hint) 654 { 655 mState.generateMipmapHint = hint; 656 } 657 658 void Context::setFragmentShaderDerivativeHint(GLenum hint) 659 { 660 mState.fragmentShaderDerivativeHint = hint; 661 // TODO: Propagate the hint to shader translator so we can write 662 // ddx, ddx_coarse, or ddx_fine depending on the hint. 663 // Ignore for now. It is valid for implementations to ignore hint. 664 } 665 666 void Context::setViewportParams(GLint x, GLint y, GLsizei width, GLsizei height) 667 { 668 mState.viewportX = x; 669 mState.viewportY = y; 670 mState.viewportWidth = width; 671 mState.viewportHeight = height; 672 } 673 674 void Context::setScissorParams(GLint x, GLint y, GLsizei width, GLsizei height) 675 { 676 mState.scissorX = x; 677 mState.scissorY = y; 678 mState.scissorWidth = width; 679 mState.scissorHeight = height; 680 } 681 682 void Context::setColorMask(bool red, bool green, bool blue, bool alpha) 683 { 684 if(mState.colorMaskRed != red || mState.colorMaskGreen != green || 685 mState.colorMaskBlue != blue || mState.colorMaskAlpha != alpha) 686 { 687 mState.colorMaskRed = red; 688 mState.colorMaskGreen = green; 689 mState.colorMaskBlue = blue; 690 mState.colorMaskAlpha = alpha; 691 mMaskStateDirty = true; 692 } 693 } 694 695 unsigned int Context::getColorMask() const 696 { 697 return (mState.colorMaskRed ? 0x1 : 0) | 698 (mState.colorMaskGreen ? 0x2 : 0) | 699 (mState.colorMaskBlue ? 0x4 : 0) | 700 (mState.colorMaskAlpha ? 0x8 : 0); 701 } 702 703 void Context::setDepthMask(bool mask) 704 { 705 if(mState.depthMask != mask) 706 { 707 mState.depthMask = mask; 708 mMaskStateDirty = true; 709 } 710 } 711 712 void Context::setActiveSampler(unsigned int active) 713 { 714 mState.activeSampler = active; 715 } 716 717 GLuint Context::getReadFramebufferName() const 718 { 719 return mState.readFramebuffer; 720 } 721 722 GLuint Context::getDrawFramebufferName() const 723 { 724 return mState.drawFramebuffer; 725 } 726 727 GLuint Context::getRenderbufferName() const 728 { 729 return mState.renderbuffer.name(); 730 } 731 732 void Context::setFramebufferReadBuffer(GLuint buf) 733 { 734 getReadFramebuffer()->setReadBuffer(buf); 735 } 736 737 void Context::setFramebufferDrawBuffers(GLsizei n, const GLenum *bufs) 738 { 739 Framebuffer *drawFramebuffer = getDrawFramebuffer(); 740 741 for(int i = 0; i < MAX_COLOR_ATTACHMENTS; i++) 742 { 743 drawFramebuffer->setDrawBuffer(i, (i < n) ? bufs[i] : GL_NONE); 744 } 745 } 746 747 GLuint Context::getReadFramebufferColorIndex() const 748 { 749 GLenum buf = getReadFramebuffer()->getReadBuffer(); 750 switch(buf) 751 { 752 case GL_BACK: 753 return 0; 754 case GL_NONE: 755 return GL_INVALID_INDEX; 756 default: 757 return buf - GL_COLOR_ATTACHMENT0; 758 } 759 } 760 761 GLuint Context::getArrayBufferName() const 762 { 763 return mState.arrayBuffer.name(); 764 } 765 766 GLuint Context::getElementArrayBufferName() const 767 { 768 Buffer* elementArrayBuffer = getCurrentVertexArray()->getElementArrayBuffer(); 769 return elementArrayBuffer ? elementArrayBuffer->name : 0; 770 } 771 772 GLuint Context::getActiveQuery(GLenum target) const 773 { 774 Query *queryObject = nullptr; 775 776 switch(target) 777 { 778 case GL_ANY_SAMPLES_PASSED_EXT: 779 queryObject = mState.activeQuery[QUERY_ANY_SAMPLES_PASSED]; 780 break; 781 case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT: 782 queryObject = mState.activeQuery[QUERY_ANY_SAMPLES_PASSED_CONSERVATIVE]; 783 break; 784 case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: 785 queryObject = mState.activeQuery[QUERY_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN]; 786 break; 787 default: 788 ASSERT(false); 789 } 790 791 if(queryObject) 792 { 793 return queryObject->name; 794 } 795 796 return 0; 797 } 798 799 void Context::setVertexAttribArrayEnabled(unsigned int attribNum, bool enabled) 800 { 801 getCurrentVertexArray()->enableAttribute(attribNum, enabled); 802 } 803 804 void Context::setVertexAttribDivisor(unsigned int attribNum, GLuint divisor) 805 { 806 getCurrentVertexArray()->setVertexAttribDivisor(attribNum, divisor); 807 } 808 809 const VertexAttribute &Context::getVertexAttribState(unsigned int attribNum) const 810 { 811 return getCurrentVertexArray()->getVertexAttribute(attribNum); 812 } 813 814 void Context::setVertexAttribState(unsigned int attribNum, Buffer *boundBuffer, GLint size, GLenum type, bool normalized, 815 GLsizei stride, const void *pointer) 816 { 817 getCurrentVertexArray()->setAttributeState(attribNum, boundBuffer, size, type, normalized, stride, pointer); 818 } 819 820 const void *Context::getVertexAttribPointer(unsigned int attribNum) const 821 { 822 return getCurrentVertexArray()->getVertexAttribute(attribNum).mPointer; 823 } 824 825 const VertexAttributeArray &Context::getVertexArrayAttributes() 826 { 827 return getCurrentVertexArray()->getVertexAttributes(); 828 } 829 830 const VertexAttributeArray &Context::getCurrentVertexAttributes() 831 { 832 return mState.vertexAttribute; 833 } 834 835 void Context::setPackAlignment(GLint alignment) 836 { 837 mState.packAlignment = alignment; 838 } 839 840 void Context::setUnpackAlignment(GLint alignment) 841 { 842 mState.unpackInfo.alignment = alignment; 843 } 844 845 const egl::Image::UnpackInfo& Context::getUnpackInfo() const 846 { 847 return mState.unpackInfo; 848 } 849 850 void Context::setPackRowLength(GLint rowLength) 851 { 852 mState.packRowLength = rowLength; 853 } 854 855 void Context::setPackImageHeight(GLint imageHeight) 856 { 857 mState.packImageHeight = imageHeight; 858 } 859 860 void Context::setPackSkipPixels(GLint skipPixels) 861 { 862 mState.packSkipPixels = skipPixels; 863 } 864 865 void Context::setPackSkipRows(GLint skipRows) 866 { 867 mState.packSkipRows = skipRows; 868 } 869 870 void Context::setPackSkipImages(GLint skipImages) 871 { 872 mState.packSkipImages = skipImages; 873 } 874 875 void Context::setUnpackRowLength(GLint rowLength) 876 { 877 mState.unpackInfo.rowLength = rowLength; 878 } 879 880 void Context::setUnpackImageHeight(GLint imageHeight) 881 { 882 mState.unpackInfo.imageHeight = imageHeight; 883 } 884 885 void Context::setUnpackSkipPixels(GLint skipPixels) 886 { 887 mState.unpackInfo.skipPixels = skipPixels; 888 } 889 890 void Context::setUnpackSkipRows(GLint skipRows) 891 { 892 mState.unpackInfo.skipRows = skipRows; 893 } 894 895 void Context::setUnpackSkipImages(GLint skipImages) 896 { 897 mState.unpackInfo.skipImages = skipImages; 898 } 899 900 GLuint Context::createBuffer() 901 { 902 return mResourceManager->createBuffer(); 903 } 904 905 GLuint Context::createProgram() 906 { 907 return mResourceManager->createProgram(); 908 } 909 910 GLuint Context::createShader(GLenum type) 911 { 912 return mResourceManager->createShader(type); 913 } 914 915 GLuint Context::createTexture() 916 { 917 return mResourceManager->createTexture(); 918 } 919 920 GLuint Context::createRenderbuffer() 921 { 922 return mResourceManager->createRenderbuffer(); 923 } 924 925 // Returns an unused framebuffer name 926 GLuint Context::createFramebuffer() 927 { 928 return mFramebufferNameSpace.allocate(); 929 } 930 931 GLuint Context::createFence() 932 { 933 return mFenceNameSpace.allocate(new Fence()); 934 } 935 936 // Returns an unused query name 937 GLuint Context::createQuery() 938 { 939 return mQueryNameSpace.allocate(); 940 } 941 942 // Returns an unused vertex array name 943 GLuint Context::createVertexArray() 944 { 945 return mVertexArrayNameSpace.allocate(); 946 } 947 948 GLsync Context::createFenceSync(GLenum condition, GLbitfield flags) 949 { 950 GLuint handle = mResourceManager->createFenceSync(condition, flags); 951 952 return reinterpret_cast<GLsync>(static_cast<uintptr_t>(handle)); 953 } 954 955 // Returns an unused transform feedback name 956 GLuint Context::createTransformFeedback() 957 { 958 return mTransformFeedbackNameSpace.allocate(); 959 } 960 961 // Returns an unused sampler name 962 GLuint Context::createSampler() 963 { 964 return mResourceManager->createSampler(); 965 } 966 967 void Context::deleteBuffer(GLuint buffer) 968 { 969 detachBuffer(buffer); 970 971 mResourceManager->deleteBuffer(buffer); 972 } 973 974 void Context::deleteShader(GLuint shader) 975 { 976 mResourceManager->deleteShader(shader); 977 } 978 979 void Context::deleteProgram(GLuint program) 980 { 981 mResourceManager->deleteProgram(program); 982 } 983 984 void Context::deleteTexture(GLuint texture) 985 { 986 detachTexture(texture); 987 988 mResourceManager->deleteTexture(texture); 989 } 990 991 void Context::deleteRenderbuffer(GLuint renderbuffer) 992 { 993 if(mResourceManager->getRenderbuffer(renderbuffer)) 994 { 995 detachRenderbuffer(renderbuffer); 996 } 997 998 mResourceManager->deleteRenderbuffer(renderbuffer); 999 } 1000 1001 void Context::deleteFramebuffer(GLuint framebuffer) 1002 { 1003 detachFramebuffer(framebuffer); 1004 1005 Framebuffer *framebufferObject = mFramebufferNameSpace.remove(framebuffer); 1006 1007 if(framebufferObject) 1008 { 1009 delete framebufferObject; 1010 } 1011 } 1012 1013 void Context::deleteFence(GLuint fence) 1014 { 1015 Fence *fenceObject = mFenceNameSpace.remove(fence); 1016 1017 if(fenceObject) 1018 { 1019 delete fenceObject; 1020 } 1021 } 1022 1023 void Context::deleteQuery(GLuint query) 1024 { 1025 Query *queryObject = mQueryNameSpace.remove(query); 1026 1027 if(queryObject) 1028 { 1029 queryObject->release(); 1030 } 1031 } 1032 1033 void Context::deleteVertexArray(GLuint vertexArray) 1034 { 1035 // [OpenGL ES 3.0.2] section 2.10 page 43: 1036 // If a vertex array object that is currently bound is deleted, the binding 1037 // for that object reverts to zero and the default vertex array becomes current. 1038 if(getCurrentVertexArray()->name == vertexArray) 1039 { 1040 bindVertexArray(0); 1041 } 1042 1043 VertexArray *vertexArrayObject = mVertexArrayNameSpace.remove(vertexArray); 1044 1045 if(vertexArrayObject) 1046 { 1047 delete vertexArrayObject; 1048 } 1049 } 1050 1051 void Context::deleteFenceSync(GLsync fenceSync) 1052 { 1053 // The spec specifies the underlying Fence object is not deleted until all current 1054 // wait commands finish. However, since the name becomes invalid, we cannot query the fence, 1055 // and since our API is currently designed for being called from a single thread, we can delete 1056 // the fence immediately. 1057 mResourceManager->deleteFenceSync(static_cast<GLuint>(reinterpret_cast<uintptr_t>(fenceSync))); 1058 } 1059 1060 void Context::deleteTransformFeedback(GLuint transformFeedback) 1061 { 1062 TransformFeedback *transformFeedbackObject = mTransformFeedbackNameSpace.remove(transformFeedback); 1063 1064 if(transformFeedbackObject) 1065 { 1066 delete transformFeedbackObject; 1067 } 1068 } 1069 1070 void Context::deleteSampler(GLuint sampler) 1071 { 1072 detachSampler(sampler); 1073 1074 mResourceManager->deleteSampler(sampler); 1075 } 1076 1077 Buffer *Context::getBuffer(GLuint handle) const 1078 { 1079 return mResourceManager->getBuffer(handle); 1080 } 1081 1082 Shader *Context::getShader(GLuint handle) const 1083 { 1084 return mResourceManager->getShader(handle); 1085 } 1086 1087 Program *Context::getProgram(GLuint handle) const 1088 { 1089 return mResourceManager->getProgram(handle); 1090 } 1091 1092 Texture *Context::getTexture(GLuint handle) const 1093 { 1094 return mResourceManager->getTexture(handle); 1095 } 1096 1097 Renderbuffer *Context::getRenderbuffer(GLuint handle) const 1098 { 1099 return mResourceManager->getRenderbuffer(handle); 1100 } 1101 1102 Framebuffer *Context::getReadFramebuffer() const 1103 { 1104 return getFramebuffer(mState.readFramebuffer); 1105 } 1106 1107 Framebuffer *Context::getDrawFramebuffer() const 1108 { 1109 return getFramebuffer(mState.drawFramebuffer); 1110 } 1111 1112 void Context::bindArrayBuffer(unsigned int buffer) 1113 { 1114 mResourceManager->checkBufferAllocation(buffer); 1115 1116 mState.arrayBuffer = getBuffer(buffer); 1117 } 1118 1119 void Context::bindElementArrayBuffer(unsigned int buffer) 1120 { 1121 mResourceManager->checkBufferAllocation(buffer); 1122 1123 getCurrentVertexArray()->setElementArrayBuffer(getBuffer(buffer)); 1124 } 1125 1126 void Context::bindCopyReadBuffer(GLuint buffer) 1127 { 1128 mResourceManager->checkBufferAllocation(buffer); 1129 1130 mState.copyReadBuffer = getBuffer(buffer); 1131 } 1132 1133 void Context::bindCopyWriteBuffer(GLuint buffer) 1134 { 1135 mResourceManager->checkBufferAllocation(buffer); 1136 1137 mState.copyWriteBuffer = getBuffer(buffer); 1138 } 1139 1140 void Context::bindPixelPackBuffer(GLuint buffer) 1141 { 1142 mResourceManager->checkBufferAllocation(buffer); 1143 1144 mState.pixelPackBuffer = getBuffer(buffer); 1145 } 1146 1147 void Context::bindPixelUnpackBuffer(GLuint buffer) 1148 { 1149 mResourceManager->checkBufferAllocation(buffer); 1150 1151 mState.pixelUnpackBuffer = getBuffer(buffer); 1152 } 1153 1154 void Context::bindTransformFeedbackBuffer(GLuint buffer) 1155 { 1156 mResourceManager->checkBufferAllocation(buffer); 1157 1158 TransformFeedback* transformFeedback = getTransformFeedback(mState.transformFeedback); 1159 1160 if(transformFeedback) 1161 { 1162 transformFeedback->setGenericBuffer(getBuffer(buffer)); 1163 } 1164 } 1165 1166 void Context::bindTexture2D(GLuint texture) 1167 { 1168 mResourceManager->checkTextureAllocation(texture, TEXTURE_2D); 1169 1170 mState.samplerTexture[TEXTURE_2D][mState.activeSampler] = getTexture(texture); 1171 } 1172 1173 void Context::bindTextureCubeMap(GLuint texture) 1174 { 1175 mResourceManager->checkTextureAllocation(texture, TEXTURE_CUBE); 1176 1177 mState.samplerTexture[TEXTURE_CUBE][mState.activeSampler] = getTexture(texture); 1178 } 1179 1180 void Context::bindTextureExternal(GLuint texture) 1181 { 1182 mResourceManager->checkTextureAllocation(texture, TEXTURE_EXTERNAL); 1183 1184 mState.samplerTexture[TEXTURE_EXTERNAL][mState.activeSampler] = getTexture(texture); 1185 } 1186 1187 void Context::bindTexture3D(GLuint texture) 1188 { 1189 mResourceManager->checkTextureAllocation(texture, TEXTURE_3D); 1190 1191 mState.samplerTexture[TEXTURE_3D][mState.activeSampler] = getTexture(texture); 1192 } 1193 1194 void Context::bindTexture2DArray(GLuint texture) 1195 { 1196 mResourceManager->checkTextureAllocation(texture, TEXTURE_2D_ARRAY); 1197 1198 mState.samplerTexture[TEXTURE_2D_ARRAY][mState.activeSampler] = getTexture(texture); 1199 } 1200 1201 void Context::bindReadFramebuffer(GLuint framebuffer) 1202 { 1203 if(!getFramebuffer(framebuffer)) 1204 { 1205 mFramebufferNameSpace.insert(framebuffer, new Framebuffer()); 1206 } 1207 1208 mState.readFramebuffer = framebuffer; 1209 } 1210 1211 void Context::bindDrawFramebuffer(GLuint framebuffer) 1212 { 1213 if(!getFramebuffer(framebuffer)) 1214 { 1215 mFramebufferNameSpace.insert(framebuffer, new Framebuffer()); 1216 } 1217 1218 mState.drawFramebuffer = framebuffer; 1219 } 1220 1221 void Context::bindRenderbuffer(GLuint renderbuffer) 1222 { 1223 mResourceManager->checkRenderbufferAllocation(renderbuffer); 1224 1225 mState.renderbuffer = getRenderbuffer(renderbuffer); 1226 } 1227 1228 void Context::bindVertexArray(GLuint array) 1229 { 1230 VertexArray *vertexArray = getVertexArray(array); 1231 1232 if(!vertexArray) 1233 { 1234 vertexArray = new VertexArray(array); 1235 mVertexArrayNameSpace.insert(array, vertexArray); 1236 } 1237 1238 mState.vertexArray = array; 1239 } 1240 1241 void Context::bindGenericUniformBuffer(GLuint buffer) 1242 { 1243 mResourceManager->checkBufferAllocation(buffer); 1244 1245 mState.genericUniformBuffer = getBuffer(buffer); 1246 } 1247 1248 void Context::bindIndexedUniformBuffer(GLuint buffer, GLuint index, GLintptr offset, GLsizeiptr size) 1249 { 1250 mResourceManager->checkBufferAllocation(buffer); 1251 1252 Buffer* bufferObject = getBuffer(buffer); 1253 mState.uniformBuffers[index].set(bufferObject, offset, size); 1254 } 1255 1256 void Context::bindGenericTransformFeedbackBuffer(GLuint buffer) 1257 { 1258 mResourceManager->checkBufferAllocation(buffer); 1259 1260 getTransformFeedback()->setGenericBuffer(getBuffer(buffer)); 1261 } 1262 1263 void Context::bindIndexedTransformFeedbackBuffer(GLuint buffer, GLuint index, GLintptr offset, GLsizeiptr size) 1264 { 1265 mResourceManager->checkBufferAllocation(buffer); 1266 1267 Buffer* bufferObject = getBuffer(buffer); 1268 getTransformFeedback()->setBuffer(index, bufferObject, offset, size); 1269 } 1270 1271 void Context::bindTransformFeedback(GLuint id) 1272 { 1273 if(!getTransformFeedback(id)) 1274 { 1275 mTransformFeedbackNameSpace.insert(id, new TransformFeedback(id)); 1276 } 1277 1278 mState.transformFeedback = id; 1279 } 1280 1281 bool Context::bindSampler(GLuint unit, GLuint sampler) 1282 { 1283 mResourceManager->checkSamplerAllocation(sampler); 1284 1285 Sampler* samplerObject = getSampler(sampler); 1286 1287 if(sampler) 1288 { 1289 mState.sampler[unit] = samplerObject; 1290 } 1291 1292 return !!samplerObject; 1293 } 1294 1295 void Context::useProgram(GLuint program) 1296 { 1297 GLuint priorProgram = mState.currentProgram; 1298 mState.currentProgram = program; // Must switch before trying to delete, otherwise it only gets flagged. 1299 1300 if(priorProgram != program) 1301 { 1302 Program *newProgram = mResourceManager->getProgram(program); 1303 Program *oldProgram = mResourceManager->getProgram(priorProgram); 1304 1305 if(newProgram) 1306 { 1307 newProgram->addRef(); 1308 } 1309 1310 if(oldProgram) 1311 { 1312 oldProgram->release(); 1313 } 1314 } 1315 } 1316 1317 void Context::beginQuery(GLenum target, GLuint query) 1318 { 1319 // From EXT_occlusion_query_boolean: If BeginQueryEXT is called with an <id> 1320 // of zero, if the active query object name for <target> is non-zero (for the 1321 // targets ANY_SAMPLES_PASSED_EXT and ANY_SAMPLES_PASSED_CONSERVATIVE_EXT, if 1322 // the active query for either target is non-zero), if <id> is the name of an 1323 // existing query object whose type does not match <target>, or if <id> is the 1324 // active query object name for any query type, the error INVALID_OPERATION is 1325 // generated. 1326 1327 // Ensure no other queries are active 1328 // NOTE: If other queries than occlusion are supported, we will need to check 1329 // separately that: 1330 // a) The query ID passed is not the current active query for any target/type 1331 // b) There are no active queries for the requested target (and in the case 1332 // of GL_ANY_SAMPLES_PASSED_EXT and GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT, 1333 // no query may be active for either if glBeginQuery targets either. 1334 for(int i = 0; i < QUERY_TYPE_COUNT; i++) 1335 { 1336 if(mState.activeQuery[i]) 1337 { 1338 return error(GL_INVALID_OPERATION); 1339 } 1340 } 1341 1342 QueryType qType; 1343 switch(target) 1344 { 1345 case GL_ANY_SAMPLES_PASSED_EXT: 1346 qType = QUERY_ANY_SAMPLES_PASSED; 1347 break; 1348 case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT: 1349 qType = QUERY_ANY_SAMPLES_PASSED_CONSERVATIVE; 1350 break; 1351 case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: 1352 qType = QUERY_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN; 1353 break; 1354 default: 1355 ASSERT(false); 1356 } 1357 1358 Query *queryObject = createQuery(query, target); 1359 1360 // Check that name was obtained with glGenQueries 1361 if(!queryObject) 1362 { 1363 return error(GL_INVALID_OPERATION); 1364 } 1365 1366 // Check for type mismatch 1367 if(queryObject->getType() != target) 1368 { 1369 return error(GL_INVALID_OPERATION); 1370 } 1371 1372 // Set query as active for specified target 1373 mState.activeQuery[qType] = queryObject; 1374 1375 // Begin query 1376 queryObject->begin(); 1377 } 1378 1379 void Context::endQuery(GLenum target) 1380 { 1381 QueryType qType; 1382 1383 switch(target) 1384 { 1385 case GL_ANY_SAMPLES_PASSED_EXT: qType = QUERY_ANY_SAMPLES_PASSED; break; 1386 case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT: qType = QUERY_ANY_SAMPLES_PASSED_CONSERVATIVE; break; 1387 case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: qType = QUERY_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN; break; 1388 default: UNREACHABLE(target); return; 1389 } 1390 1391 Query *queryObject = mState.activeQuery[qType]; 1392 1393 if(!queryObject) 1394 { 1395 return error(GL_INVALID_OPERATION); 1396 } 1397 1398 queryObject->end(); 1399 1400 mState.activeQuery[qType] = nullptr; 1401 } 1402 1403 void Context::setFramebufferZero(Framebuffer *buffer) 1404 { 1405 delete mFramebufferNameSpace.remove(0); 1406 mFramebufferNameSpace.insert(0, buffer); 1407 } 1408 1409 void Context::setRenderbufferStorage(RenderbufferStorage *renderbuffer) 1410 { 1411 Renderbuffer *renderbufferObject = mState.renderbuffer; 1412 renderbufferObject->setStorage(renderbuffer); 1413 } 1414 1415 Framebuffer *Context::getFramebuffer(unsigned int handle) const 1416 { 1417 return mFramebufferNameSpace.find(handle); 1418 } 1419 1420 Fence *Context::getFence(unsigned int handle) const 1421 { 1422 return mFenceNameSpace.find(handle); 1423 } 1424 1425 FenceSync *Context::getFenceSync(GLsync handle) const 1426 { 1427 return mResourceManager->getFenceSync(static_cast<GLuint>(reinterpret_cast<uintptr_t>(handle))); 1428 } 1429 1430 Query *Context::getQuery(unsigned int handle) const 1431 { 1432 return mQueryNameSpace.find(handle); 1433 } 1434 1435 Query *Context::createQuery(unsigned int handle, GLenum type) 1436 { 1437 if(!mQueryNameSpace.isReserved(handle)) 1438 { 1439 return nullptr; 1440 } 1441 else 1442 { 1443 Query *query = mQueryNameSpace.find(handle); 1444 if(!query) 1445 { 1446 query = new Query(handle, type); 1447 query->addRef(); 1448 mQueryNameSpace.insert(handle, query); 1449 } 1450 1451 return query; 1452 } 1453 } 1454 1455 VertexArray *Context::getVertexArray(GLuint array) const 1456 { 1457 return mVertexArrayNameSpace.find(array); 1458 } 1459 1460 VertexArray *Context::getCurrentVertexArray() const 1461 { 1462 return getVertexArray(mState.vertexArray); 1463 } 1464 1465 bool Context::isVertexArray(GLuint array) const 1466 { 1467 return mVertexArrayNameSpace.isReserved(array); 1468 } 1469 1470 bool Context::hasZeroDivisor() const 1471 { 1472 // Verify there is at least one active attribute with a divisor of zero 1473 es2::Program *programObject = getCurrentProgram(); 1474 for(int attributeIndex = 0; attributeIndex < MAX_VERTEX_ATTRIBS; attributeIndex++) 1475 { 1476 bool active = (programObject->getAttributeStream(attributeIndex) != -1); 1477 if(active && getCurrentVertexArray()->getVertexAttribute(attributeIndex).mDivisor == 0) 1478 { 1479 return true; 1480 } 1481 } 1482 1483 return false; 1484 } 1485 1486 TransformFeedback *Context::getTransformFeedback(GLuint transformFeedback) const 1487 { 1488 return mTransformFeedbackNameSpace.find(transformFeedback); 1489 } 1490 1491 Sampler *Context::getSampler(GLuint sampler) const 1492 { 1493 return mResourceManager->getSampler(sampler); 1494 } 1495 1496 bool Context::isSampler(GLuint sampler) const 1497 { 1498 return mResourceManager->isSampler(sampler); 1499 } 1500 1501 Buffer *Context::getArrayBuffer() const 1502 { 1503 return mState.arrayBuffer; 1504 } 1505 1506 Buffer *Context::getElementArrayBuffer() const 1507 { 1508 return getCurrentVertexArray()->getElementArrayBuffer(); 1509 } 1510 1511 Buffer *Context::getCopyReadBuffer() const 1512 { 1513 return mState.copyReadBuffer; 1514 } 1515 1516 Buffer *Context::getCopyWriteBuffer() const 1517 { 1518 return mState.copyWriteBuffer; 1519 } 1520 1521 Buffer *Context::getPixelPackBuffer() const 1522 { 1523 return mState.pixelPackBuffer; 1524 } 1525 1526 Buffer *Context::getPixelUnpackBuffer() const 1527 { 1528 return mState.pixelUnpackBuffer; 1529 } 1530 1531 Buffer *Context::getGenericUniformBuffer() const 1532 { 1533 return mState.genericUniformBuffer; 1534 } 1535 1536 bool Context::getBuffer(GLenum target, es2::Buffer **buffer) const 1537 { 1538 switch(target) 1539 { 1540 case GL_ARRAY_BUFFER: 1541 *buffer = getArrayBuffer(); 1542 break; 1543 case GL_ELEMENT_ARRAY_BUFFER: 1544 *buffer = getElementArrayBuffer(); 1545 break; 1546 case GL_COPY_READ_BUFFER: 1547 if(clientVersion >= 3) 1548 { 1549 *buffer = getCopyReadBuffer(); 1550 break; 1551 } 1552 else return false; 1553 case GL_COPY_WRITE_BUFFER: 1554 if(clientVersion >= 3) 1555 { 1556 *buffer = getCopyWriteBuffer(); 1557 break; 1558 } 1559 else return false; 1560 case GL_PIXEL_PACK_BUFFER: 1561 if(clientVersion >= 3) 1562 { 1563 *buffer = getPixelPackBuffer(); 1564 break; 1565 } 1566 else return false; 1567 case GL_PIXEL_UNPACK_BUFFER: 1568 if(clientVersion >= 3) 1569 { 1570 *buffer = getPixelUnpackBuffer(); 1571 break; 1572 } 1573 else return false; 1574 case GL_TRANSFORM_FEEDBACK_BUFFER: 1575 if(clientVersion >= 3) 1576 { 1577 TransformFeedback* transformFeedback = getTransformFeedback(); 1578 *buffer = transformFeedback ? static_cast<es2::Buffer*>(transformFeedback->getGenericBuffer()) : nullptr; 1579 break; 1580 } 1581 else return false; 1582 case GL_UNIFORM_BUFFER: 1583 if(clientVersion >= 3) 1584 { 1585 *buffer = getGenericUniformBuffer(); 1586 break; 1587 } 1588 else return false; 1589 default: 1590 return false; 1591 } 1592 return true; 1593 } 1594 1595 TransformFeedback *Context::getTransformFeedback() const 1596 { 1597 return getTransformFeedback(mState.transformFeedback); 1598 } 1599 1600 Program *Context::getCurrentProgram() const 1601 { 1602 return mResourceManager->getProgram(mState.currentProgram); 1603 } 1604 1605 Texture2D *Context::getTexture2D() const 1606 { 1607 return static_cast<Texture2D*>(getSamplerTexture(mState.activeSampler, TEXTURE_2D)); 1608 } 1609 1610 Texture3D *Context::getTexture3D() const 1611 { 1612 return static_cast<Texture3D*>(getSamplerTexture(mState.activeSampler, TEXTURE_3D)); 1613 } 1614 1615 Texture2DArray *Context::getTexture2DArray() const 1616 { 1617 return static_cast<Texture2DArray*>(getSamplerTexture(mState.activeSampler, TEXTURE_2D_ARRAY)); 1618 } 1619 1620 TextureCubeMap *Context::getTextureCubeMap() const 1621 { 1622 return static_cast<TextureCubeMap*>(getSamplerTexture(mState.activeSampler, TEXTURE_CUBE)); 1623 } 1624 1625 TextureExternal *Context::getTextureExternal() const 1626 { 1627 return static_cast<TextureExternal*>(getSamplerTexture(mState.activeSampler, TEXTURE_EXTERNAL)); 1628 } 1629 1630 Texture *Context::getSamplerTexture(unsigned int sampler, TextureType type) const 1631 { 1632 GLuint texid = mState.samplerTexture[type][sampler].name(); 1633 1634 if(texid == 0) // Special case: 0 refers to different initial textures based on the target 1635 { 1636 switch(type) 1637 { 1638 case TEXTURE_2D: return mTexture2DZero; 1639 case TEXTURE_3D: return mTexture3DZero; 1640 case TEXTURE_2D_ARRAY: return mTexture2DArrayZero; 1641 case TEXTURE_CUBE: return mTextureCubeMapZero; 1642 case TEXTURE_EXTERNAL: return mTextureExternalZero; 1643 default: UNREACHABLE(type); 1644 } 1645 } 1646 1647 return mState.samplerTexture[type][sampler]; 1648 } 1649 1650 void Context::samplerParameteri(GLuint sampler, GLenum pname, GLint param) 1651 { 1652 mResourceManager->checkSamplerAllocation(sampler); 1653 1654 Sampler *samplerObject = getSampler(sampler); 1655 ASSERT(samplerObject); 1656 1657 switch(pname) 1658 { 1659 case GL_TEXTURE_MIN_FILTER: samplerObject->setMinFilter(static_cast<GLenum>(param)); break; 1660 case GL_TEXTURE_MAG_FILTER: samplerObject->setMagFilter(static_cast<GLenum>(param)); break; 1661 case GL_TEXTURE_WRAP_S: samplerObject->setWrapS(static_cast<GLenum>(param)); break; 1662 case GL_TEXTURE_WRAP_T: samplerObject->setWrapT(static_cast<GLenum>(param)); break; 1663 case GL_TEXTURE_WRAP_R: samplerObject->setWrapR(static_cast<GLenum>(param)); break; 1664 case GL_TEXTURE_MIN_LOD: samplerObject->setMinLod(static_cast<GLfloat>(param)); break; 1665 case GL_TEXTURE_MAX_LOD: samplerObject->setMaxLod(static_cast<GLfloat>(param)); break; 1666 case GL_TEXTURE_COMPARE_MODE: samplerObject->setComparisonMode(static_cast<GLenum>(param)); break; 1667 case GL_TEXTURE_COMPARE_FUNC: samplerObject->setComparisonFunc(static_cast<GLenum>(param)); break; 1668 default: UNREACHABLE(pname); break; 1669 } 1670 } 1671 1672 void Context::samplerParameterf(GLuint sampler, GLenum pname, GLfloat param) 1673 { 1674 mResourceManager->checkSamplerAllocation(sampler); 1675 1676 Sampler *samplerObject = getSampler(sampler); 1677 ASSERT(samplerObject); 1678 1679 switch(pname) 1680 { 1681 case GL_TEXTURE_MIN_FILTER: samplerObject->setMinFilter(static_cast<GLenum>(roundf(param))); break; 1682 case GL_TEXTURE_MAG_FILTER: samplerObject->setMagFilter(static_cast<GLenum>(roundf(param))); break; 1683 case GL_TEXTURE_WRAP_S: samplerObject->setWrapS(static_cast<GLenum>(roundf(param))); break; 1684 case GL_TEXTURE_WRAP_T: samplerObject->setWrapT(static_cast<GLenum>(roundf(param))); break; 1685 case GL_TEXTURE_WRAP_R: samplerObject->setWrapR(static_cast<GLenum>(roundf(param))); break; 1686 case GL_TEXTURE_MIN_LOD: samplerObject->setMinLod(param); break; 1687 case GL_TEXTURE_MAX_LOD: samplerObject->setMaxLod(param); break; 1688 case GL_TEXTURE_COMPARE_MODE: samplerObject->setComparisonMode(static_cast<GLenum>(roundf(param))); break; 1689 case GL_TEXTURE_COMPARE_FUNC: samplerObject->setComparisonFunc(static_cast<GLenum>(roundf(param))); break; 1690 default: UNREACHABLE(pname); break; 1691 } 1692 } 1693 1694 GLint Context::getSamplerParameteri(GLuint sampler, GLenum pname) 1695 { 1696 mResourceManager->checkSamplerAllocation(sampler); 1697 1698 Sampler *samplerObject = getSampler(sampler); 1699 ASSERT(samplerObject); 1700 1701 switch(pname) 1702 { 1703 case GL_TEXTURE_MIN_FILTER: return static_cast<GLint>(samplerObject->getMinFilter()); 1704 case GL_TEXTURE_MAG_FILTER: return static_cast<GLint>(samplerObject->getMagFilter()); 1705 case GL_TEXTURE_WRAP_S: return static_cast<GLint>(samplerObject->getWrapS()); 1706 case GL_TEXTURE_WRAP_T: return static_cast<GLint>(samplerObject->getWrapT()); 1707 case GL_TEXTURE_WRAP_R: return static_cast<GLint>(samplerObject->getWrapR()); 1708 case GL_TEXTURE_MIN_LOD: return static_cast<GLint>(roundf(samplerObject->getMinLod())); 1709 case GL_TEXTURE_MAX_LOD: return static_cast<GLint>(roundf(samplerObject->getMaxLod())); 1710 case GL_TEXTURE_COMPARE_MODE: return static_cast<GLint>(samplerObject->getComparisonMode()); 1711 case GL_TEXTURE_COMPARE_FUNC: return static_cast<GLint>(samplerObject->getComparisonFunc()); 1712 default: UNREACHABLE(pname); return 0; 1713 } 1714 } 1715 1716 GLfloat Context::getSamplerParameterf(GLuint sampler, GLenum pname) 1717 { 1718 mResourceManager->checkSamplerAllocation(sampler); 1719 1720 Sampler *samplerObject = getSampler(sampler); 1721 ASSERT(samplerObject); 1722 1723 switch(pname) 1724 { 1725 case GL_TEXTURE_MIN_FILTER: return static_cast<GLfloat>(samplerObject->getMinFilter()); 1726 case GL_TEXTURE_MAG_FILTER: return static_cast<GLfloat>(samplerObject->getMagFilter()); 1727 case GL_TEXTURE_WRAP_S: return static_cast<GLfloat>(samplerObject->getWrapS()); 1728 case GL_TEXTURE_WRAP_T: return static_cast<GLfloat>(samplerObject->getWrapT()); 1729 case GL_TEXTURE_WRAP_R: return static_cast<GLfloat>(samplerObject->getWrapR()); 1730 case GL_TEXTURE_MIN_LOD: return samplerObject->getMinLod(); 1731 case GL_TEXTURE_MAX_LOD: return samplerObject->getMaxLod(); 1732 case GL_TEXTURE_COMPARE_MODE: return static_cast<GLfloat>(samplerObject->getComparisonMode()); 1733 case GL_TEXTURE_COMPARE_FUNC: return static_cast<GLfloat>(samplerObject->getComparisonFunc()); 1734 default: UNREACHABLE(pname); return 0; 1735 } 1736 } 1737 1738 bool Context::getBooleanv(GLenum pname, GLboolean *params) const 1739 { 1740 switch(pname) 1741 { 1742 case GL_SHADER_COMPILER: *params = GL_TRUE; break; 1743 case GL_SAMPLE_COVERAGE_INVERT: *params = mState.sampleCoverageInvert; break; 1744 case GL_DEPTH_WRITEMASK: *params = mState.depthMask; break; 1745 case GL_COLOR_WRITEMASK: 1746 params[0] = mState.colorMaskRed; 1747 params[1] = mState.colorMaskGreen; 1748 params[2] = mState.colorMaskBlue; 1749 params[3] = mState.colorMaskAlpha; 1750 break; 1751 case GL_CULL_FACE: *params = mState.cullFaceEnabled; break; 1752 case GL_POLYGON_OFFSET_FILL: *params = mState.polygonOffsetFillEnabled; break; 1753 case GL_SAMPLE_ALPHA_TO_COVERAGE: *params = mState.sampleAlphaToCoverageEnabled; break; 1754 case GL_SAMPLE_COVERAGE: *params = mState.sampleCoverageEnabled; break; 1755 case GL_SCISSOR_TEST: *params = mState.scissorTestEnabled; break; 1756 case GL_STENCIL_TEST: *params = mState.stencilTestEnabled; break; 1757 case GL_DEPTH_TEST: *params = mState.depthTestEnabled; break; 1758 case GL_BLEND: *params = mState.blendEnabled; break; 1759 case GL_DITHER: *params = mState.ditherEnabled; break; 1760 case GL_PRIMITIVE_RESTART_FIXED_INDEX: *params = mState.primitiveRestartFixedIndexEnabled; break; 1761 case GL_RASTERIZER_DISCARD: *params = mState.rasterizerDiscardEnabled; break; 1762 case GL_TRANSFORM_FEEDBACK_ACTIVE: 1763 { 1764 TransformFeedback* transformFeedback = getTransformFeedback(mState.transformFeedback); 1765 if(transformFeedback) 1766 { 1767 *params = transformFeedback->isActive(); 1768 break; 1769 } 1770 else return false; 1771 } 1772 case GL_TRANSFORM_FEEDBACK_PAUSED: 1773 { 1774 TransformFeedback* transformFeedback = getTransformFeedback(mState.transformFeedback); 1775 if(transformFeedback) 1776 { 1777 *params = transformFeedback->isPaused(); 1778 break; 1779 } 1780 else return false; 1781 } 1782 default: 1783 return false; 1784 } 1785 1786 return true; 1787 } 1788 1789 bool Context::getFloatv(GLenum pname, GLfloat *params) const 1790 { 1791 // Please note: DEPTH_CLEAR_VALUE is included in our internal getFloatv implementation 1792 // because it is stored as a float, despite the fact that the GL ES 2.0 spec names 1793 // GetIntegerv as its native query function. As it would require conversion in any 1794 // case, this should make no difference to the calling application. 1795 switch(pname) 1796 { 1797 case GL_LINE_WIDTH: *params = mState.lineWidth; break; 1798 case GL_SAMPLE_COVERAGE_VALUE: *params = mState.sampleCoverageValue; break; 1799 case GL_DEPTH_CLEAR_VALUE: *params = mState.depthClearValue; break; 1800 case GL_POLYGON_OFFSET_FACTOR: *params = mState.polygonOffsetFactor; break; 1801 case GL_POLYGON_OFFSET_UNITS: *params = mState.polygonOffsetUnits; break; 1802 case GL_ALIASED_LINE_WIDTH_RANGE: 1803 params[0] = ALIASED_LINE_WIDTH_RANGE_MIN; 1804 params[1] = ALIASED_LINE_WIDTH_RANGE_MAX; 1805 break; 1806 case GL_ALIASED_POINT_SIZE_RANGE: 1807 params[0] = ALIASED_POINT_SIZE_RANGE_MIN; 1808 params[1] = ALIASED_POINT_SIZE_RANGE_MAX; 1809 break; 1810 case GL_DEPTH_RANGE: 1811 params[0] = mState.zNear; 1812 params[1] = mState.zFar; 1813 break; 1814 case GL_COLOR_CLEAR_VALUE: 1815 params[0] = mState.colorClearValue.red; 1816 params[1] = mState.colorClearValue.green; 1817 params[2] = mState.colorClearValue.blue; 1818 params[3] = mState.colorClearValue.alpha; 1819 break; 1820 case GL_BLEND_COLOR: 1821 params[0] = mState.blendColor.red; 1822 params[1] = mState.blendColor.green; 1823 params[2] = mState.blendColor.blue; 1824 params[3] = mState.blendColor.alpha; 1825 break; 1826 case GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT: 1827 *params = MAX_TEXTURE_MAX_ANISOTROPY; 1828 break; 1829 default: 1830 return false; 1831 } 1832 1833 return true; 1834 } 1835 1836 template bool Context::getIntegerv<GLint>(GLenum pname, GLint *params) const; 1837 template bool Context::getIntegerv<GLint64>(GLenum pname, GLint64 *params) const; 1838 1839 template<typename T> bool Context::getIntegerv(GLenum pname, T *params) const 1840 { 1841 // Please note: DEPTH_CLEAR_VALUE is not included in our internal getIntegerv implementation 1842 // because it is stored as a float, despite the fact that the GL ES 2.0 spec names 1843 // GetIntegerv as its native query function. As it would require conversion in any 1844 // case, this should make no difference to the calling application. You may find it in 1845 // Context::getFloatv. 1846 switch(pname) 1847 { 1848 case GL_MAX_VERTEX_ATTRIBS: *params = MAX_VERTEX_ATTRIBS; break; 1849 case GL_MAX_VERTEX_UNIFORM_VECTORS: *params = MAX_VERTEX_UNIFORM_VECTORS; break; 1850 case GL_MAX_VARYING_VECTORS: *params = MAX_VARYING_VECTORS; break; 1851 case GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS: *params = MAX_COMBINED_TEXTURE_IMAGE_UNITS; break; 1852 case GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS: *params = MAX_VERTEX_TEXTURE_IMAGE_UNITS; break; 1853 case GL_MAX_TEXTURE_IMAGE_UNITS: *params = MAX_TEXTURE_IMAGE_UNITS; break; 1854 case GL_MAX_FRAGMENT_UNIFORM_VECTORS: *params = MAX_FRAGMENT_UNIFORM_VECTORS; break; 1855 case GL_MAX_RENDERBUFFER_SIZE: *params = IMPLEMENTATION_MAX_RENDERBUFFER_SIZE; break; 1856 case GL_NUM_SHADER_BINARY_FORMATS: *params = 0; break; 1857 case GL_SHADER_BINARY_FORMATS: /* no shader binary formats are supported */ break; 1858 case GL_ARRAY_BUFFER_BINDING: *params = getArrayBufferName(); break; 1859 case GL_ELEMENT_ARRAY_BUFFER_BINDING: *params = getElementArrayBufferName(); break; 1860 // case GL_FRAMEBUFFER_BINDING: // now equivalent to GL_DRAW_FRAMEBUFFER_BINDING_ANGLE 1861 case GL_DRAW_FRAMEBUFFER_BINDING_ANGLE: *params = mState.drawFramebuffer; break; 1862 case GL_READ_FRAMEBUFFER_BINDING_ANGLE: *params = mState.readFramebuffer; break; 1863 case GL_RENDERBUFFER_BINDING: *params = mState.renderbuffer.name(); break; 1864 case GL_CURRENT_PROGRAM: *params = mState.currentProgram; break; 1865 case GL_PACK_ALIGNMENT: *params = mState.packAlignment; break; 1866 case GL_UNPACK_ALIGNMENT: *params = mState.unpackInfo.alignment; break; 1867 case GL_GENERATE_MIPMAP_HINT: *params = mState.generateMipmapHint; break; 1868 case GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES: *params = mState.fragmentShaderDerivativeHint; break; 1869 case GL_ACTIVE_TEXTURE: *params = (mState.activeSampler + GL_TEXTURE0); break; 1870 case GL_STENCIL_FUNC: *params = mState.stencilFunc; break; 1871 case GL_STENCIL_REF: *params = mState.stencilRef; break; 1872 case GL_STENCIL_VALUE_MASK: *params = sw::clampToSignedInt(mState.stencilMask); break; 1873 case GL_STENCIL_BACK_FUNC: *params = mState.stencilBackFunc; break; 1874 case GL_STENCIL_BACK_REF: *params = mState.stencilBackRef; break; 1875 case GL_STENCIL_BACK_VALUE_MASK: *params = sw::clampToSignedInt(mState.stencilBackMask); break; 1876 case GL_STENCIL_FAIL: *params = mState.stencilFail; break; 1877 case GL_STENCIL_PASS_DEPTH_FAIL: *params = mState.stencilPassDepthFail; break; 1878 case GL_STENCIL_PASS_DEPTH_PASS: *params = mState.stencilPassDepthPass; break; 1879 case GL_STENCIL_BACK_FAIL: *params = mState.stencilBackFail; break; 1880 case GL_STENCIL_BACK_PASS_DEPTH_FAIL: *params = mState.stencilBackPassDepthFail; break; 1881 case GL_STENCIL_BACK_PASS_DEPTH_PASS: *params = mState.stencilBackPassDepthPass; break; 1882 case GL_DEPTH_FUNC: *params = mState.depthFunc; break; 1883 case GL_BLEND_SRC_RGB: *params = mState.sourceBlendRGB; break; 1884 case GL_BLEND_SRC_ALPHA: *params = mState.sourceBlendAlpha; break; 1885 case GL_BLEND_DST_RGB: *params = mState.destBlendRGB; break; 1886 case GL_BLEND_DST_ALPHA: *params = mState.destBlendAlpha; break; 1887 case GL_BLEND_EQUATION_RGB: *params = mState.blendEquationRGB; break; 1888 case GL_BLEND_EQUATION_ALPHA: *params = mState.blendEquationAlpha; break; 1889 case GL_STENCIL_WRITEMASK: *params = sw::clampToSignedInt(mState.stencilWritemask); break; 1890 case GL_STENCIL_BACK_WRITEMASK: *params = sw::clampToSignedInt(mState.stencilBackWritemask); break; 1891 case GL_STENCIL_CLEAR_VALUE: *params = mState.stencilClearValue; break; 1892 case GL_SUBPIXEL_BITS: *params = 4; break; 1893 case GL_MAX_TEXTURE_SIZE: *params = IMPLEMENTATION_MAX_TEXTURE_SIZE; break; 1894 case GL_MAX_CUBE_MAP_TEXTURE_SIZE: *params = IMPLEMENTATION_MAX_CUBE_MAP_TEXTURE_SIZE; break; 1895 case GL_NUM_COMPRESSED_TEXTURE_FORMATS: *params = NUM_COMPRESSED_TEXTURE_FORMATS; break; 1896 case GL_MAX_SAMPLES_ANGLE: *params = IMPLEMENTATION_MAX_SAMPLES; break; 1897 case GL_SAMPLE_BUFFERS: 1898 case GL_SAMPLES: 1899 { 1900 Framebuffer *framebuffer = getDrawFramebuffer(); 1901 int width, height, samples; 1902 1903 if(framebuffer->completeness(width, height, samples) == GL_FRAMEBUFFER_COMPLETE) 1904 { 1905 switch(pname) 1906 { 1907 case GL_SAMPLE_BUFFERS: 1908 if(samples > 1) 1909 { 1910 *params = 1; 1911 } 1912 else 1913 { 1914 *params = 0; 1915 } 1916 break; 1917 case GL_SAMPLES: 1918 *params = samples; 1919 break; 1920 } 1921 } 1922 else 1923 { 1924 *params = 0; 1925 } 1926 } 1927 break; 1928 case GL_IMPLEMENTATION_COLOR_READ_TYPE: 1929 { 1930 Framebuffer *framebuffer = getReadFramebuffer(); 1931 *params = framebuffer->getImplementationColorReadType(); 1932 } 1933 break; 1934 case GL_IMPLEMENTATION_COLOR_READ_FORMAT: 1935 { 1936 Framebuffer *framebuffer = getReadFramebuffer(); 1937 *params = framebuffer->getImplementationColorReadFormat(); 1938 } 1939 break; 1940 case GL_MAX_VIEWPORT_DIMS: 1941 { 1942 int maxDimension = IMPLEMENTATION_MAX_RENDERBUFFER_SIZE; 1943 params[0] = maxDimension; 1944 params[1] = maxDimension; 1945 } 1946 break; 1947 case GL_COMPRESSED_TEXTURE_FORMATS: 1948 { 1949 for(int i = 0; i < NUM_COMPRESSED_TEXTURE_FORMATS; i++) 1950 { 1951 params[i] = compressedTextureFormats[i]; 1952 } 1953 } 1954 break; 1955 case GL_VIEWPORT: 1956 params[0] = mState.viewportX; 1957 params[1] = mState.viewportY; 1958 params[2] = mState.viewportWidth; 1959 params[3] = mState.viewportHeight; 1960 break; 1961 case GL_SCISSOR_BOX: 1962 params[0] = mState.scissorX; 1963 params[1] = mState.scissorY; 1964 params[2] = mState.scissorWidth; 1965 params[3] = mState.scissorHeight; 1966 break; 1967 case GL_CULL_FACE_MODE: *params = mState.cullMode; break; 1968 case GL_FRONT_FACE: *params = mState.frontFace; break; 1969 case GL_RED_BITS: 1970 case GL_GREEN_BITS: 1971 case GL_BLUE_BITS: 1972 case GL_ALPHA_BITS: 1973 { 1974 Framebuffer *framebuffer = getDrawFramebuffer(); 1975 Renderbuffer *colorbuffer = framebuffer->getColorbuffer(0); 1976 1977 if(colorbuffer) 1978 { 1979 switch(pname) 1980 { 1981 case GL_RED_BITS: *params = colorbuffer->getRedSize(); break; 1982 case GL_GREEN_BITS: *params = colorbuffer->getGreenSize(); break; 1983 case GL_BLUE_BITS: *params = colorbuffer->getBlueSize(); break; 1984 case GL_ALPHA_BITS: *params = colorbuffer->getAlphaSize(); break; 1985 } 1986 } 1987 else 1988 { 1989 *params = 0; 1990 } 1991 } 1992 break; 1993 case GL_DEPTH_BITS: 1994 { 1995 Framebuffer *framebuffer = getDrawFramebuffer(); 1996 Renderbuffer *depthbuffer = framebuffer->getDepthbuffer(); 1997 1998 if(depthbuffer) 1999 { 2000 *params = depthbuffer->getDepthSize(); 2001 } 2002 else 2003 { 2004 *params = 0; 2005 } 2006 } 2007 break; 2008 case GL_STENCIL_BITS: 2009 { 2010 Framebuffer *framebuffer = getDrawFramebuffer(); 2011 Renderbuffer *stencilbuffer = framebuffer->getStencilbuffer(); 2012 2013 if(stencilbuffer) 2014 { 2015 *params = stencilbuffer->getStencilSize(); 2016 } 2017 else 2018 { 2019 *params = 0; 2020 } 2021 } 2022 break; 2023 case GL_TEXTURE_BINDING_2D: 2024 if(mState.activeSampler > MAX_COMBINED_TEXTURE_IMAGE_UNITS - 1) 2025 { 2026 error(GL_INVALID_OPERATION); 2027 return false; 2028 } 2029 2030 *params = mState.samplerTexture[TEXTURE_2D][mState.activeSampler].name(); 2031 break; 2032 case GL_TEXTURE_BINDING_CUBE_MAP: 2033 if(mState.activeSampler > MAX_COMBINED_TEXTURE_IMAGE_UNITS - 1) 2034 { 2035 error(GL_INVALID_OPERATION); 2036 return false; 2037 } 2038 2039 *params = mState.samplerTexture[TEXTURE_CUBE][mState.activeSampler].name(); 2040 break; 2041 case GL_TEXTURE_BINDING_EXTERNAL_OES: 2042 if(mState.activeSampler > MAX_COMBINED_TEXTURE_IMAGE_UNITS - 1) 2043 { 2044 error(GL_INVALID_OPERATION); 2045 return false; 2046 } 2047 2048 *params = mState.samplerTexture[TEXTURE_EXTERNAL][mState.activeSampler].name(); 2049 break; 2050 case GL_TEXTURE_BINDING_3D_OES: 2051 if(mState.activeSampler > MAX_COMBINED_TEXTURE_IMAGE_UNITS - 1) 2052 { 2053 error(GL_INVALID_OPERATION); 2054 return false; 2055 } 2056 2057 *params = mState.samplerTexture[TEXTURE_3D][mState.activeSampler].name(); 2058 break; 2059 case GL_TEXTURE_BINDING_2D_ARRAY: // GLES 3.0 2060 if(clientVersion < 3) 2061 { 2062 return false; 2063 } 2064 else if(mState.activeSampler > MAX_COMBINED_TEXTURE_IMAGE_UNITS - 1) 2065 { 2066 error(GL_INVALID_OPERATION); 2067 return false; 2068 } 2069 2070 *params = mState.samplerTexture[TEXTURE_2D_ARRAY][mState.activeSampler].name(); 2071 break; 2072 case GL_COPY_READ_BUFFER_BINDING: // name, initially 0 2073 if(clientVersion >= 3) 2074 { 2075 *params = mState.copyReadBuffer.name(); 2076 } 2077 else 2078 { 2079 return false; 2080 } 2081 break; 2082 case GL_COPY_WRITE_BUFFER_BINDING: // name, initially 0 2083 if(clientVersion >= 3) 2084 { 2085 *params = mState.copyWriteBuffer.name(); 2086 } 2087 else 2088 { 2089 return false; 2090 } 2091 break; 2092 case GL_DRAW_BUFFER0: 2093 case GL_DRAW_BUFFER1: 2094 case GL_DRAW_BUFFER2: 2095 case GL_DRAW_BUFFER3: 2096 case GL_DRAW_BUFFER4: 2097 case GL_DRAW_BUFFER5: 2098 case GL_DRAW_BUFFER6: 2099 case GL_DRAW_BUFFER7: 2100 case GL_DRAW_BUFFER8: 2101 case GL_DRAW_BUFFER9: 2102 case GL_DRAW_BUFFER10: 2103 case GL_DRAW_BUFFER11: 2104 case GL_DRAW_BUFFER12: 2105 case GL_DRAW_BUFFER13: 2106 case GL_DRAW_BUFFER14: 2107 case GL_DRAW_BUFFER15: 2108 *params = getDrawFramebuffer()->getDrawBuffer(pname - GL_DRAW_BUFFER0); 2109 break; 2110 case GL_MAJOR_VERSION: 2111 if(clientVersion >= 3) 2112 { 2113 *params = clientVersion; 2114 } 2115 else 2116 { 2117 return false; 2118 } 2119 break; 2120 case GL_MAX_3D_TEXTURE_SIZE: // GLint, at least 2048 2121 *params = IMPLEMENTATION_MAX_TEXTURE_SIZE; 2122 break; 2123 case GL_MAX_ARRAY_TEXTURE_LAYERS: // GLint, at least 2048 2124 *params = IMPLEMENTATION_MAX_TEXTURE_SIZE; 2125 break; 2126 case GL_MAX_COLOR_ATTACHMENTS: 2127 *params = MAX_COLOR_ATTACHMENTS; 2128 break; 2129 case GL_MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS: // integer, at least 50048 2130 *params = MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS; 2131 break; 2132 case GL_MAX_COMBINED_UNIFORM_BLOCKS: // integer, at least 70 2133 UNIMPLEMENTED(); 2134 *params = 70; 2135 break; 2136 case GL_MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS: // integer, at least 50176 2137 *params = MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS; 2138 break; 2139 case GL_MAX_DRAW_BUFFERS: 2140 *params = MAX_DRAW_BUFFERS; 2141 break; 2142 case GL_MAX_ELEMENT_INDEX: 2143 *params = MAX_ELEMENT_INDEX; 2144 break; 2145 case GL_MAX_ELEMENTS_INDICES: 2146 *params = MAX_ELEMENTS_INDICES; 2147 break; 2148 case GL_MAX_ELEMENTS_VERTICES: 2149 *params = MAX_ELEMENTS_VERTICES; 2150 break; 2151 case GL_MAX_FRAGMENT_INPUT_COMPONENTS: // integer, at least 128 2152 UNIMPLEMENTED(); 2153 *params = 128; 2154 break; 2155 case GL_MAX_FRAGMENT_UNIFORM_BLOCKS: // integer, at least 12 2156 *params = MAX_FRAGMENT_UNIFORM_BLOCKS; 2157 break; 2158 case GL_MAX_FRAGMENT_UNIFORM_COMPONENTS: // integer, at least 896 2159 *params = MAX_FRAGMENT_UNIFORM_COMPONENTS; 2160 break; 2161 case GL_MAX_PROGRAM_TEXEL_OFFSET: // integer, minimum is 7 2162 UNIMPLEMENTED(); 2163 *params = 7; 2164 break; 2165 case GL_MAX_SERVER_WAIT_TIMEOUT: // integer 2166 UNIMPLEMENTED(); 2167 *params = 0; 2168 break; 2169 case GL_MAX_TEXTURE_LOD_BIAS: // integer, at least 2.0 2170 UNIMPLEMENTED(); 2171 *params = 2; 2172 break; 2173 case GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS: // integer, at least 64 2174 *params = sw::MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS; 2175 break; 2176 case GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS: // integer, at least 4 2177 UNIMPLEMENTED(); 2178 *params = MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS; 2179 break; 2180 case GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS: // integer, at least 4 2181 *params = sw::MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS; 2182 break; 2183 case GL_MAX_UNIFORM_BLOCK_SIZE: // integer, at least 16384 2184 *params = MAX_UNIFORM_BLOCK_SIZE; 2185 break; 2186 case GL_MAX_UNIFORM_BUFFER_BINDINGS: // integer, at least 24 2187 *params = MAX_UNIFORM_BUFFER_BINDINGS; 2188 break; 2189 case GL_MAX_VARYING_COMPONENTS: // integer, at least 60 2190 UNIMPLEMENTED(); 2191 *params = 60; 2192 break; 2193 case GL_MAX_VERTEX_OUTPUT_COMPONENTS: // integer, at least 64 2194 UNIMPLEMENTED(); 2195 *params = 64; 2196 break; 2197 case GL_MAX_VERTEX_UNIFORM_BLOCKS: // integer, at least 12 2198 *params = MAX_VERTEX_UNIFORM_BLOCKS; 2199 break; 2200 case GL_MAX_VERTEX_UNIFORM_COMPONENTS: // integer, at least 1024 2201 *params = MAX_VERTEX_UNIFORM_COMPONENTS; 2202 break; 2203 case GL_MIN_PROGRAM_TEXEL_OFFSET: // integer, maximum is -8 2204 UNIMPLEMENTED(); 2205 *params = -8; 2206 break; 2207 case GL_MINOR_VERSION: // integer 2208 UNIMPLEMENTED(); 2209 *params = 0; 2210 break; 2211 case GL_NUM_EXTENSIONS: // integer 2212 GLuint numExtensions; 2213 getExtensions(0, &numExtensions); 2214 *params = numExtensions; 2215 break; 2216 case GL_NUM_PROGRAM_BINARY_FORMATS: // integer, at least 0 2217 UNIMPLEMENTED(); 2218 *params = 0; 2219 break; 2220 case GL_PACK_ROW_LENGTH: // integer, initially 0 2221 *params = mState.packRowLength; 2222 break; 2223 case GL_PACK_SKIP_PIXELS: // integer, initially 0 2224 *params = mState.packSkipPixels; 2225 break; 2226 case GL_PACK_SKIP_ROWS: // integer, initially 0 2227 *params = mState.packSkipRows; 2228 break; 2229 case GL_PIXEL_PACK_BUFFER_BINDING: // integer, initially 0 2230 if(clientVersion >= 3) 2231 { 2232 *params = mState.pixelPackBuffer.name(); 2233 } 2234 else 2235 { 2236 return false; 2237 } 2238 break; 2239 case GL_PIXEL_UNPACK_BUFFER_BINDING: // integer, initially 0 2240 if(clientVersion >= 3) 2241 { 2242 *params = mState.pixelUnpackBuffer.name(); 2243 } 2244 else 2245 { 2246 return false; 2247 } 2248 break; 2249 case GL_PROGRAM_BINARY_FORMATS: // integer[GL_NUM_PROGRAM_BINARY_FORMATS] 2250 UNIMPLEMENTED(); 2251 *params = 0; 2252 break; 2253 case GL_READ_BUFFER: // symbolic constant, initial value is GL_BACK 2254 *params = getReadFramebuffer()->getReadBuffer(); 2255 break; 2256 case GL_SAMPLER_BINDING: // GLint, default 0 2257 *params = mState.sampler[mState.activeSampler].name(); 2258 break; 2259 case GL_UNIFORM_BUFFER_BINDING: // name, initially 0 2260 if(clientVersion >= 3) 2261 { 2262 *params = mState.genericUniformBuffer.name(); 2263 } 2264 else 2265 { 2266 return false; 2267 } 2268 break; 2269 case GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT: // integer, defaults to 1 2270 *params = UNIFORM_BUFFER_OFFSET_ALIGNMENT; 2271 break; 2272 case GL_UNIFORM_BUFFER_SIZE: // indexed[n] 64-bit integer, initially 0 2273 if(clientVersion >= 3) 2274 { 2275 *params = mState.genericUniformBuffer->size(); 2276 } 2277 else 2278 { 2279 return false; 2280 } 2281 break; 2282 case GL_UNIFORM_BUFFER_START: // indexed[n] 64-bit integer, initially 0 2283 if(clientVersion >= 3) 2284 { 2285 *params = mState.genericUniformBuffer->offset(); 2286 } 2287 else 2288 { 2289 return false; 2290 } 2291 *params = 0; 2292 break; 2293 case GL_UNPACK_IMAGE_HEIGHT: // integer, initially 0 2294 *params = mState.unpackInfo.imageHeight; 2295 break; 2296 case GL_UNPACK_ROW_LENGTH: // integer, initially 0 2297 *params = mState.unpackInfo.rowLength; 2298 break; 2299 case GL_UNPACK_SKIP_IMAGES: // integer, initially 0 2300 *params = mState.unpackInfo.skipImages; 2301 break; 2302 case GL_UNPACK_SKIP_PIXELS: // integer, initially 0 2303 *params = mState.unpackInfo.skipPixels; 2304 break; 2305 case GL_UNPACK_SKIP_ROWS: // integer, initially 0 2306 *params = mState.unpackInfo.skipRows; 2307 break; 2308 case GL_VERTEX_ARRAY_BINDING: // GLint, initially 0 2309 *params = getCurrentVertexArray()->name; 2310 break; 2311 case GL_TRANSFORM_FEEDBACK_BINDING: 2312 { 2313 TransformFeedback* transformFeedback = getTransformFeedback(mState.transformFeedback); 2314 if(transformFeedback) 2315 { 2316 *params = transformFeedback->name; 2317 } 2318 else 2319 { 2320 return false; 2321 } 2322 } 2323 break; 2324 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING: 2325 { 2326 TransformFeedback* transformFeedback = getTransformFeedback(mState.transformFeedback); 2327 if(transformFeedback) 2328 { 2329 *params = transformFeedback->getGenericBufferName(); 2330 } 2331 else 2332 { 2333 return false; 2334 } 2335 } 2336 break; 2337 default: 2338 return false; 2339 } 2340 2341 return true; 2342 } 2343 2344 template bool Context::getTransformFeedbackiv<GLint>(GLuint index, GLenum pname, GLint *param) const; 2345 template bool Context::getTransformFeedbackiv<GLint64>(GLuint index, GLenum pname, GLint64 *param) const; 2346 2347 template<typename T> bool Context::getTransformFeedbackiv(GLuint index, GLenum pname, T *param) const 2348 { 2349 TransformFeedback* transformFeedback = getTransformFeedback(mState.transformFeedback); 2350 if(!transformFeedback) 2351 { 2352 return false; 2353 } 2354 2355 switch(pname) 2356 { 2357 case GL_TRANSFORM_FEEDBACK_BINDING: // GLint, initially 0 2358 *param = transformFeedback->name; 2359 break; 2360 case GL_TRANSFORM_FEEDBACK_ACTIVE: // boolean, initially GL_FALSE 2361 *param = transformFeedback->isActive(); 2362 break; 2363 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING: // name, initially 0 2364 *param = transformFeedback->getBufferName(index); 2365 break; 2366 case GL_TRANSFORM_FEEDBACK_PAUSED: // boolean, initially GL_FALSE 2367 *param = transformFeedback->isPaused(); 2368 break; 2369 case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE: // indexed[n] 64-bit integer, initially 0 2370 if(transformFeedback->getBuffer(index)) 2371 { 2372 *param = transformFeedback->getSize(index); 2373 break; 2374 } 2375 else return false; 2376 case GL_TRANSFORM_FEEDBACK_BUFFER_START: // indexed[n] 64-bit integer, initially 0 2377 if(transformFeedback->getBuffer(index)) 2378 { 2379 *param = transformFeedback->getOffset(index); 2380 break; 2381 } 2382 else return false; 2383 default: 2384 return false; 2385 } 2386 2387 return true; 2388 } 2389 2390 template bool Context::getUniformBufferiv<GLint>(GLuint index, GLenum pname, GLint *param) const; 2391 template bool Context::getUniformBufferiv<GLint64>(GLuint index, GLenum pname, GLint64 *param) const; 2392 2393 template<typename T> bool Context::getUniformBufferiv(GLuint index, GLenum pname, T *param) const 2394 { 2395 const BufferBinding& uniformBuffer = mState.uniformBuffers[index]; 2396 2397 switch(pname) 2398 { 2399 case GL_UNIFORM_BUFFER_BINDING: // name, initially 0 2400 *param = uniformBuffer.get().name(); 2401 break; 2402 case GL_UNIFORM_BUFFER_SIZE: // indexed[n] 64-bit integer, initially 0 2403 *param = uniformBuffer.getSize(); 2404 break; 2405 case GL_UNIFORM_BUFFER_START: // indexed[n] 64-bit integer, initially 0 2406 *param = uniformBuffer.getOffset(); 2407 break; 2408 default: 2409 return false; 2410 } 2411 2412 return true; 2413 } 2414 2415 bool Context::getQueryParameterInfo(GLenum pname, GLenum *type, unsigned int *numParams) const 2416 { 2417 // Please note: the query type returned for DEPTH_CLEAR_VALUE in this implementation 2418 // is FLOAT rather than INT, as would be suggested by the GL ES 2.0 spec. This is due 2419 // to the fact that it is stored internally as a float, and so would require conversion 2420 // if returned from Context::getIntegerv. Since this conversion is already implemented 2421 // in the case that one calls glGetIntegerv to retrieve a float-typed state variable, we 2422 // place DEPTH_CLEAR_VALUE with the floats. This should make no difference to the calling 2423 // application. 2424 switch(pname) 2425 { 2426 case GL_COMPRESSED_TEXTURE_FORMATS: 2427 { 2428 *type = GL_INT; 2429 *numParams = NUM_COMPRESSED_TEXTURE_FORMATS; 2430 } 2431 break; 2432 case GL_SHADER_BINARY_FORMATS: 2433 { 2434 *type = GL_INT; 2435 *numParams = 0; 2436 } 2437 break; 2438 case GL_MAX_VERTEX_ATTRIBS: 2439 case GL_MAX_VERTEX_UNIFORM_VECTORS: 2440 case GL_MAX_VARYING_VECTORS: 2441 case GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS: 2442 case GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS: 2443 case GL_MAX_TEXTURE_IMAGE_UNITS: 2444 case GL_MAX_FRAGMENT_UNIFORM_VECTORS: 2445 case GL_MAX_RENDERBUFFER_SIZE: 2446 case GL_NUM_SHADER_BINARY_FORMATS: 2447 case GL_NUM_COMPRESSED_TEXTURE_FORMATS: 2448 case GL_ARRAY_BUFFER_BINDING: 2449 case GL_FRAMEBUFFER_BINDING: // Same as GL_DRAW_FRAMEBUFFER_BINDING_ANGLE 2450 case GL_READ_FRAMEBUFFER_BINDING_ANGLE: 2451 case GL_RENDERBUFFER_BINDING: 2452 case GL_CURRENT_PROGRAM: 2453 case GL_PACK_ALIGNMENT: 2454 case GL_UNPACK_ALIGNMENT: 2455 case GL_GENERATE_MIPMAP_HINT: 2456 case GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES: 2457 case GL_RED_BITS: 2458 case GL_GREEN_BITS: 2459 case GL_BLUE_BITS: 2460 case GL_ALPHA_BITS: 2461 case GL_DEPTH_BITS: 2462 case GL_STENCIL_BITS: 2463 case GL_ELEMENT_ARRAY_BUFFER_BINDING: 2464 case GL_CULL_FACE_MODE: 2465 case GL_FRONT_FACE: 2466 case GL_ACTIVE_TEXTURE: 2467 case GL_STENCIL_FUNC: 2468 case GL_STENCIL_VALUE_MASK: 2469 case GL_STENCIL_REF: 2470 case GL_STENCIL_FAIL: 2471 case GL_STENCIL_PASS_DEPTH_FAIL: 2472 case GL_STENCIL_PASS_DEPTH_PASS: 2473 case GL_STENCIL_BACK_FUNC: 2474 case GL_STENCIL_BACK_VALUE_MASK: 2475 case GL_STENCIL_BACK_REF: 2476 case GL_STENCIL_BACK_FAIL: 2477 case GL_STENCIL_BACK_PASS_DEPTH_FAIL: 2478 case GL_STENCIL_BACK_PASS_DEPTH_PASS: 2479 case GL_DEPTH_FUNC: 2480 case GL_BLEND_SRC_RGB: 2481 case GL_BLEND_SRC_ALPHA: 2482 case GL_BLEND_DST_RGB: 2483 case GL_BLEND_DST_ALPHA: 2484 case GL_BLEND_EQUATION_RGB: 2485 case GL_BLEND_EQUATION_ALPHA: 2486 case GL_STENCIL_WRITEMASK: 2487 case GL_STENCIL_BACK_WRITEMASK: 2488 case GL_STENCIL_CLEAR_VALUE: 2489 case GL_SUBPIXEL_BITS: 2490 case GL_MAX_TEXTURE_SIZE: 2491 case GL_MAX_CUBE_MAP_TEXTURE_SIZE: 2492 case GL_SAMPLE_BUFFERS: 2493 case GL_SAMPLES: 2494 case GL_IMPLEMENTATION_COLOR_READ_TYPE: 2495 case GL_IMPLEMENTATION_COLOR_READ_FORMAT: 2496 case GL_TEXTURE_BINDING_2D: 2497 case GL_TEXTURE_BINDING_CUBE_MAP: 2498 case GL_TEXTURE_BINDING_EXTERNAL_OES: 2499 case GL_TEXTURE_BINDING_3D_OES: 2500 case GL_COPY_READ_BUFFER_BINDING: 2501 case GL_COPY_WRITE_BUFFER_BINDING: 2502 case GL_DRAW_BUFFER0: 2503 case GL_DRAW_BUFFER1: 2504 case GL_DRAW_BUFFER2: 2505 case GL_DRAW_BUFFER3: 2506 case GL_DRAW_BUFFER4: 2507 case GL_DRAW_BUFFER5: 2508 case GL_DRAW_BUFFER6: 2509 case GL_DRAW_BUFFER7: 2510 case GL_DRAW_BUFFER8: 2511 case GL_DRAW_BUFFER9: 2512 case GL_DRAW_BUFFER10: 2513 case GL_DRAW_BUFFER11: 2514 case GL_DRAW_BUFFER12: 2515 case GL_DRAW_BUFFER13: 2516 case GL_DRAW_BUFFER14: 2517 case GL_DRAW_BUFFER15: 2518 case GL_MAJOR_VERSION: 2519 case GL_MAX_3D_TEXTURE_SIZE: 2520 case GL_MAX_ARRAY_TEXTURE_LAYERS: 2521 case GL_MAX_COLOR_ATTACHMENTS: 2522 case GL_MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS: 2523 case GL_MAX_COMBINED_UNIFORM_BLOCKS: 2524 case GL_MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS: 2525 case GL_MAX_DRAW_BUFFERS: 2526 case GL_MAX_ELEMENT_INDEX: 2527 case GL_MAX_ELEMENTS_INDICES: 2528 case GL_MAX_ELEMENTS_VERTICES: 2529 case GL_MAX_FRAGMENT_INPUT_COMPONENTS: 2530 case GL_MAX_FRAGMENT_UNIFORM_BLOCKS: 2531 case GL_MAX_FRAGMENT_UNIFORM_COMPONENTS: 2532 case GL_MAX_PROGRAM_TEXEL_OFFSET: 2533 case GL_MAX_SERVER_WAIT_TIMEOUT: 2534 case GL_MAX_TEXTURE_LOD_BIAS: 2535 case GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS: 2536 case GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS: 2537 case GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS: 2538 case GL_MAX_UNIFORM_BLOCK_SIZE: 2539 case GL_MAX_UNIFORM_BUFFER_BINDINGS: 2540 case GL_MAX_VARYING_COMPONENTS: 2541 case GL_MAX_VERTEX_OUTPUT_COMPONENTS: 2542 case GL_MAX_VERTEX_UNIFORM_BLOCKS: 2543 case GL_MAX_VERTEX_UNIFORM_COMPONENTS: 2544 case GL_MIN_PROGRAM_TEXEL_OFFSET: 2545 case GL_MINOR_VERSION: 2546 case GL_NUM_EXTENSIONS: 2547 case GL_NUM_PROGRAM_BINARY_FORMATS: 2548 case GL_PACK_ROW_LENGTH: 2549 case GL_PACK_SKIP_PIXELS: 2550 case GL_PACK_SKIP_ROWS: 2551 case GL_PIXEL_PACK_BUFFER_BINDING: 2552 case GL_PIXEL_UNPACK_BUFFER_BINDING: 2553 case GL_PROGRAM_BINARY_FORMATS: 2554 case GL_READ_BUFFER: 2555 case GL_SAMPLER_BINDING: 2556 case GL_TEXTURE_BINDING_2D_ARRAY: 2557 case GL_UNIFORM_BUFFER_BINDING: 2558 case GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT: 2559 case GL_UNIFORM_BUFFER_SIZE: 2560 case GL_UNIFORM_BUFFER_START: 2561 case GL_UNPACK_IMAGE_HEIGHT: 2562 case GL_UNPACK_ROW_LENGTH: 2563 case GL_UNPACK_SKIP_IMAGES: 2564 case GL_UNPACK_SKIP_PIXELS: 2565 case GL_UNPACK_SKIP_ROWS: 2566 case GL_VERTEX_ARRAY_BINDING: 2567 case GL_TRANSFORM_FEEDBACK_BINDING: 2568 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING: 2569 { 2570 *type = GL_INT; 2571 *numParams = 1; 2572 } 2573 break; 2574 case GL_MAX_SAMPLES_ANGLE: 2575 { 2576 *type = GL_INT; 2577 *numParams = 1; 2578 } 2579 break; 2580 case GL_MAX_VIEWPORT_DIMS: 2581 { 2582 *type = GL_INT; 2583 *numParams = 2; 2584 } 2585 break; 2586 case GL_VIEWPORT: 2587 case GL_SCISSOR_BOX: 2588 { 2589 *type = GL_INT; 2590 *numParams = 4; 2591 } 2592 break; 2593 case GL_SHADER_COMPILER: 2594 case GL_SAMPLE_COVERAGE_INVERT: 2595 case GL_DEPTH_WRITEMASK: 2596 case GL_CULL_FACE: // CULL_FACE through DITHER are natural to IsEnabled, 2597 case GL_POLYGON_OFFSET_FILL: // but can be retrieved through the Get{Type}v queries. 2598 case GL_SAMPLE_ALPHA_TO_COVERAGE: // For this purpose, they are treated here as bool-natural 2599 case GL_SAMPLE_COVERAGE: 2600 case GL_SCISSOR_TEST: 2601 case GL_STENCIL_TEST: 2602 case GL_DEPTH_TEST: 2603 case GL_BLEND: 2604 case GL_DITHER: 2605 case GL_PRIMITIVE_RESTART_FIXED_INDEX: 2606 case GL_RASTERIZER_DISCARD: 2607 case GL_TRANSFORM_FEEDBACK_ACTIVE: 2608 case GL_TRANSFORM_FEEDBACK_PAUSED: 2609 { 2610 *type = GL_BOOL; 2611 *numParams = 1; 2612 } 2613 break; 2614 case GL_COLOR_WRITEMASK: 2615 { 2616 *type = GL_BOOL; 2617 *numParams = 4; 2618 } 2619 break; 2620 case GL_POLYGON_OFFSET_FACTOR: 2621 case GL_POLYGON_OFFSET_UNITS: 2622 case GL_SAMPLE_COVERAGE_VALUE: 2623 case GL_DEPTH_CLEAR_VALUE: 2624 case GL_LINE_WIDTH: 2625 { 2626 *type = GL_FLOAT; 2627 *numParams = 1; 2628 } 2629 break; 2630 case GL_ALIASED_LINE_WIDTH_RANGE: 2631 case GL_ALIASED_POINT_SIZE_RANGE: 2632 case GL_DEPTH_RANGE: 2633 { 2634 *type = GL_FLOAT; 2635 *numParams = 2; 2636 } 2637 break; 2638 case GL_COLOR_CLEAR_VALUE: 2639 case GL_BLEND_COLOR: 2640 { 2641 *type = GL_FLOAT; 2642 *numParams = 4; 2643 } 2644 break; 2645 case GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT: 2646 *type = GL_FLOAT; 2647 *numParams = 1; 2648 break; 2649 default: 2650 return false; 2651 } 2652 2653 return true; 2654 } 2655 2656 void Context::applyScissor(int width, int height) 2657 { 2658 if(mState.scissorTestEnabled) 2659 { 2660 sw::Rect scissor = { mState.scissorX, mState.scissorY, mState.scissorX + mState.scissorWidth, mState.scissorY + mState.scissorHeight }; 2661 scissor.clip(0, 0, width, height); 2662 2663 device->setScissorRect(scissor); 2664 device->setScissorEnable(true); 2665 } 2666 else 2667 { 2668 device->setScissorEnable(false); 2669 } 2670 } 2671 2672 // Applies the render target surface, depth stencil surface, viewport rectangle and scissor rectangle 2673 bool Context::applyRenderTarget() 2674 { 2675 Framebuffer *framebuffer = getDrawFramebuffer(); 2676 int width, height, samples; 2677 2678 if(!framebuffer || framebuffer->completeness(width, height, samples) != GL_FRAMEBUFFER_COMPLETE) 2679 { 2680 return error(GL_INVALID_FRAMEBUFFER_OPERATION, false); 2681 } 2682 2683 for(int i = 0; i < MAX_DRAW_BUFFERS; i++) 2684 { 2685 if(framebuffer->getDrawBuffer(i) != GL_NONE) 2686 { 2687 egl::Image *renderTarget = framebuffer->getRenderTarget(i); 2688 device->setRenderTarget(i, renderTarget); 2689 if(renderTarget) renderTarget->release(); 2690 } 2691 else 2692 { 2693 device->setRenderTarget(i, nullptr); 2694 } 2695 } 2696 2697 egl::Image *depthBuffer = framebuffer->getDepthBuffer(); 2698 device->setDepthBuffer(depthBuffer); 2699 if(depthBuffer) depthBuffer->release(); 2700 2701 egl::Image *stencilBuffer = framebuffer->getStencilBuffer(); 2702 device->setStencilBuffer(stencilBuffer); 2703 if(stencilBuffer) stencilBuffer->release(); 2704 2705 Viewport viewport; 2706 float zNear = clamp01(mState.zNear); 2707 float zFar = clamp01(mState.zFar); 2708 2709 viewport.x0 = mState.viewportX; 2710 viewport.y0 = mState.viewportY; 2711 viewport.width = mState.viewportWidth; 2712 viewport.height = mState.viewportHeight; 2713 viewport.minZ = zNear; 2714 viewport.maxZ = zFar; 2715 2716 device->setViewport(viewport); 2717 2718 applyScissor(width, height); 2719 2720 Program *program = getCurrentProgram(); 2721 2722 if(program) 2723 { 2724 GLfloat nearFarDiff[3] = {zNear, zFar, zFar - zNear}; 2725 program->setUniform1fv(program->getUniformLocation("gl_DepthRange.near"), 1, &nearFarDiff[0]); 2726 program->setUniform1fv(program->getUniformLocation("gl_DepthRange.far"), 1, &nearFarDiff[1]); 2727 program->setUniform1fv(program->getUniformLocation("gl_DepthRange.diff"), 1, &nearFarDiff[2]); 2728 } 2729 2730 return true; 2731 } 2732 2733 // Applies the fixed-function state (culling, depth test, alpha blending, stenciling, etc) 2734 void Context::applyState(GLenum drawMode) 2735 { 2736 Framebuffer *framebuffer = getDrawFramebuffer(); 2737 2738 if(mState.cullFaceEnabled) 2739 { 2740 device->setCullMode(es2sw::ConvertCullMode(mState.cullMode, mState.frontFace)); 2741 } 2742 else 2743 { 2744 device->setCullMode(sw::CULL_NONE); 2745 } 2746 2747 if(mDepthStateDirty) 2748 { 2749 if(mState.depthTestEnabled) 2750 { 2751 device->setDepthBufferEnable(true); 2752 device->setDepthCompare(es2sw::ConvertDepthComparison(mState.depthFunc)); 2753 } 2754 else 2755 { 2756 device->setDepthBufferEnable(false); 2757 } 2758 2759 mDepthStateDirty = false; 2760 } 2761 2762 if(mBlendStateDirty) 2763 { 2764 if(mState.blendEnabled) 2765 { 2766 device->setAlphaBlendEnable(true); 2767 device->setSeparateAlphaBlendEnable(true); 2768 2769 device->setBlendConstant(es2sw::ConvertColor(mState.blendColor)); 2770 2771 device->setSourceBlendFactor(es2sw::ConvertBlendFunc(mState.sourceBlendRGB)); 2772 device->setDestBlendFactor(es2sw::ConvertBlendFunc(mState.destBlendRGB)); 2773 device->setBlendOperation(es2sw::ConvertBlendOp(mState.blendEquationRGB)); 2774 2775 device->setSourceBlendFactorAlpha(es2sw::ConvertBlendFunc(mState.sourceBlendAlpha)); 2776 device->setDestBlendFactorAlpha(es2sw::ConvertBlendFunc(mState.destBlendAlpha)); 2777 device->setBlendOperationAlpha(es2sw::ConvertBlendOp(mState.blendEquationAlpha)); 2778 } 2779 else 2780 { 2781 device->setAlphaBlendEnable(false); 2782 } 2783 2784 mBlendStateDirty = false; 2785 } 2786 2787 if(mStencilStateDirty || mFrontFaceDirty) 2788 { 2789 if(mState.stencilTestEnabled && framebuffer->hasStencil()) 2790 { 2791 device->setStencilEnable(true); 2792 device->setTwoSidedStencil(true); 2793 2794 // get the maximum size of the stencil ref 2795 Renderbuffer *stencilbuffer = framebuffer->getStencilbuffer(); 2796 GLuint maxStencil = (1 << stencilbuffer->getStencilSize()) - 1; 2797 2798 if(mState.frontFace == GL_CCW) 2799 { 2800 device->setStencilWriteMask(mState.stencilWritemask); 2801 device->setStencilCompare(es2sw::ConvertStencilComparison(mState.stencilFunc)); 2802 2803 device->setStencilReference((mState.stencilRef < (GLint)maxStencil) ? mState.stencilRef : maxStencil); 2804 device->setStencilMask(mState.stencilMask); 2805 2806 device->setStencilFailOperation(es2sw::ConvertStencilOp(mState.stencilFail)); 2807 device->setStencilZFailOperation(es2sw::ConvertStencilOp(mState.stencilPassDepthFail)); 2808 device->setStencilPassOperation(es2sw::ConvertStencilOp(mState.stencilPassDepthPass)); 2809 2810 device->setStencilWriteMaskCCW(mState.stencilBackWritemask); 2811 device->setStencilCompareCCW(es2sw::ConvertStencilComparison(mState.stencilBackFunc)); 2812 2813 device->setStencilReferenceCCW((mState.stencilBackRef < (GLint)maxStencil) ? mState.stencilBackRef : maxStencil); 2814 device->setStencilMaskCCW(mState.stencilBackMask); 2815 2816 device->setStencilFailOperationCCW(es2sw::ConvertStencilOp(mState.stencilBackFail)); 2817 device->setStencilZFailOperationCCW(es2sw::ConvertStencilOp(mState.stencilBackPassDepthFail)); 2818 device->setStencilPassOperationCCW(es2sw::ConvertStencilOp(mState.stencilBackPassDepthPass)); 2819 } 2820 else 2821 { 2822 device->setStencilWriteMaskCCW(mState.stencilWritemask); 2823 device->setStencilCompareCCW(es2sw::ConvertStencilComparison(mState.stencilFunc)); 2824 2825 device->setStencilReferenceCCW((mState.stencilRef < (GLint)maxStencil) ? mState.stencilRef : maxStencil); 2826 device->setStencilMaskCCW(mState.stencilMask); 2827 2828 device->setStencilFailOperationCCW(es2sw::ConvertStencilOp(mState.stencilFail)); 2829 device->setStencilZFailOperationCCW(es2sw::ConvertStencilOp(mState.stencilPassDepthFail)); 2830 device->setStencilPassOperationCCW(es2sw::ConvertStencilOp(mState.stencilPassDepthPass)); 2831 2832 device->setStencilWriteMask(mState.stencilBackWritemask); 2833 device->setStencilCompare(es2sw::ConvertStencilComparison(mState.stencilBackFunc)); 2834 2835 device->setStencilReference((mState.stencilBackRef < (GLint)maxStencil) ? mState.stencilBackRef : maxStencil); 2836 device->setStencilMask(mState.stencilBackMask); 2837 2838 device->setStencilFailOperation(es2sw::ConvertStencilOp(mState.stencilBackFail)); 2839 device->setStencilZFailOperation(es2sw::ConvertStencilOp(mState.stencilBackPassDepthFail)); 2840 device->setStencilPassOperation(es2sw::ConvertStencilOp(mState.stencilBackPassDepthPass)); 2841 } 2842 } 2843 else 2844 { 2845 device->setStencilEnable(false); 2846 } 2847 2848 mStencilStateDirty = false; 2849 mFrontFaceDirty = false; 2850 } 2851 2852 if(mMaskStateDirty) 2853 { 2854 for(int i = 0; i < MAX_DRAW_BUFFERS; i++) 2855 { 2856 device->setColorWriteMask(i, es2sw::ConvertColorMask(mState.colorMaskRed, mState.colorMaskGreen, mState.colorMaskBlue, mState.colorMaskAlpha)); 2857 } 2858 2859 device->setDepthWriteEnable(mState.depthMask); 2860 2861 mMaskStateDirty = false; 2862 } 2863 2864 if(mPolygonOffsetStateDirty) 2865 { 2866 if(mState.polygonOffsetFillEnabled) 2867 { 2868 Renderbuffer *depthbuffer = framebuffer->getDepthbuffer(); 2869 if(depthbuffer) 2870 { 2871 device->setSlopeDepthBias(mState.polygonOffsetFactor); 2872 float depthBias = ldexp(mState.polygonOffsetUnits, -(int)(depthbuffer->getDepthSize())); 2873 device->setDepthBias(depthBias); 2874 } 2875 } 2876 else 2877 { 2878 device->setSlopeDepthBias(0); 2879 device->setDepthBias(0); 2880 } 2881 2882 mPolygonOffsetStateDirty = false; 2883 } 2884 2885 if(mSampleStateDirty) 2886 { 2887 if(mState.sampleAlphaToCoverageEnabled) 2888 { 2889 device->setTransparencyAntialiasing(sw::TRANSPARENCY_ALPHA_TO_COVERAGE); 2890 } 2891 else 2892 { 2893 device->setTransparencyAntialiasing(sw::TRANSPARENCY_NONE); 2894 } 2895 2896 if(mState.sampleCoverageEnabled) 2897 { 2898 unsigned int mask = 0; 2899 if(mState.sampleCoverageValue != 0) 2900 { 2901 int width, height, samples; 2902 framebuffer->completeness(width, height, samples); 2903 2904 float threshold = 0.5f; 2905 2906 for(int i = 0; i < samples; i++) 2907 { 2908 mask <<= 1; 2909 2910 if((i + 1) * mState.sampleCoverageValue >= threshold) 2911 { 2912 threshold += 1.0f; 2913 mask |= 1; 2914 } 2915 } 2916 } 2917 2918 if(mState.sampleCoverageInvert) 2919 { 2920 mask = ~mask; 2921 } 2922 2923 device->setMultiSampleMask(mask); 2924 } 2925 else 2926 { 2927 device->setMultiSampleMask(0xFFFFFFFF); 2928 } 2929 2930 mSampleStateDirty = false; 2931 } 2932 2933 if(mDitherStateDirty) 2934 { 2935 // UNIMPLEMENTED(); // FIXME 2936 2937 mDitherStateDirty = false; 2938 } 2939 2940 device->setRasterizerDiscard(mState.rasterizerDiscardEnabled); 2941 } 2942 2943 GLenum Context::applyVertexBuffer(GLint base, GLint first, GLsizei count, GLsizei instanceId) 2944 { 2945 TranslatedAttribute attributes[MAX_VERTEX_ATTRIBS]; 2946 2947 GLenum err = mVertexDataManager->prepareVertexData(first, count, attributes, instanceId); 2948 if(err != GL_NO_ERROR) 2949 { 2950 return err; 2951 } 2952 2953 Program *program = getCurrentProgram(); 2954 2955 device->resetInputStreams(false); 2956 2957 for(int i = 0; i < MAX_VERTEX_ATTRIBS; i++) 2958 { 2959 if(program->getAttributeStream(i) == -1) 2960 { 2961 continue; 2962 } 2963 2964 sw::Resource *resource = attributes[i].vertexBuffer; 2965 const void *buffer = (char*)resource->data() + attributes[i].offset; 2966 2967 int stride = attributes[i].stride; 2968 2969 buffer = (char*)buffer + stride * base; 2970 2971 sw::Stream attribute(resource, buffer, stride); 2972 2973 attribute.type = attributes[i].type; 2974 attribute.count = attributes[i].count; 2975 attribute.normalized = attributes[i].normalized; 2976 2977 int stream = program->getAttributeStream(i); 2978 device->setInputStream(stream, attribute); 2979 } 2980 2981 return GL_NO_ERROR; 2982 } 2983 2984 // Applies the indices and element array bindings 2985 GLenum Context::applyIndexBuffer(const void *indices, GLuint start, GLuint end, GLsizei count, GLenum mode, GLenum type, TranslatedIndexData *indexInfo) 2986 { 2987 GLenum err = mIndexDataManager->prepareIndexData(type, start, end, count, getCurrentVertexArray()->getElementArrayBuffer(), indices, indexInfo); 2988 2989 if(err == GL_NO_ERROR) 2990 { 2991 device->setIndexBuffer(indexInfo->indexBuffer); 2992 } 2993 2994 return err; 2995 } 2996 2997 // Applies the shaders and shader constants 2998 void Context::applyShaders() 2999 { 3000 Program *programObject = getCurrentProgram(); 3001 sw::VertexShader *vertexShader = programObject->getVertexShader(); 3002 sw::PixelShader *pixelShader = programObject->getPixelShader(); 3003 3004 device->setVertexShader(vertexShader); 3005 device->setPixelShader(pixelShader); 3006 3007 if(programObject->getSerial() != mAppliedProgramSerial) 3008 { 3009 programObject->dirtyAllUniforms(); 3010 mAppliedProgramSerial = programObject->getSerial(); 3011 } 3012 3013 programObject->applyTransformFeedback(getTransformFeedback()); 3014 programObject->applyUniformBuffers(mState.uniformBuffers); 3015 programObject->applyUniforms(); 3016 } 3017 3018 void Context::applyTextures() 3019 { 3020 applyTextures(sw::SAMPLER_PIXEL); 3021 applyTextures(sw::SAMPLER_VERTEX); 3022 } 3023 3024 void Context::applyTextures(sw::SamplerType samplerType) 3025 { 3026 Program *programObject = getCurrentProgram(); 3027 3028 int samplerCount = (samplerType == sw::SAMPLER_PIXEL) ? MAX_TEXTURE_IMAGE_UNITS : MAX_VERTEX_TEXTURE_IMAGE_UNITS; // Range of samplers of given sampler type 3029 3030 for(int samplerIndex = 0; samplerIndex < samplerCount; samplerIndex++) 3031 { 3032 int textureUnit = programObject->getSamplerMapping(samplerType, samplerIndex); // OpenGL texture image unit index 3033 3034 if(textureUnit != -1) 3035 { 3036 TextureType textureType = programObject->getSamplerTextureType(samplerType, samplerIndex); 3037 3038 Texture *texture = getSamplerTexture(textureUnit, textureType); 3039 3040 if(texture->isSamplerComplete()) 3041 { 3042 GLenum wrapS, wrapT, wrapR, minFilter, magFilter; 3043 3044 Sampler *samplerObject = mState.sampler[textureUnit]; 3045 if(samplerObject) 3046 { 3047 wrapS = samplerObject->getWrapS(); 3048 wrapT = samplerObject->getWrapT(); 3049 wrapR = samplerObject->getWrapR(); 3050 minFilter = samplerObject->getMinFilter(); 3051 magFilter = samplerObject->getMagFilter(); 3052 } 3053 else 3054 { 3055 wrapS = texture->getWrapS(); 3056 wrapT = texture->getWrapT(); 3057 wrapR = texture->getWrapR(); 3058 minFilter = texture->getMinFilter(); 3059 magFilter = texture->getMagFilter(); 3060 } 3061 GLfloat maxAnisotropy = texture->getMaxAnisotropy(); 3062 3063 GLenum swizzleR = texture->getSwizzleR(); 3064 GLenum swizzleG = texture->getSwizzleG(); 3065 GLenum swizzleB = texture->getSwizzleB(); 3066 GLenum swizzleA = texture->getSwizzleA(); 3067 3068 device->setAddressingModeU(samplerType, samplerIndex, es2sw::ConvertTextureWrap(wrapS)); 3069 device->setAddressingModeV(samplerType, samplerIndex, es2sw::ConvertTextureWrap(wrapT)); 3070 device->setAddressingModeW(samplerType, samplerIndex, es2sw::ConvertTextureWrap(wrapR)); 3071 device->setSwizzleR(samplerType, samplerIndex, es2sw::ConvertSwizzleType(swizzleR)); 3072 device->setSwizzleG(samplerType, samplerIndex, es2sw::ConvertSwizzleType(swizzleG)); 3073 device->setSwizzleB(samplerType, samplerIndex, es2sw::ConvertSwizzleType(swizzleB)); 3074 device->setSwizzleA(samplerType, samplerIndex, es2sw::ConvertSwizzleType(swizzleA)); 3075 3076 device->setTextureFilter(samplerType, samplerIndex, es2sw::ConvertTextureFilter(minFilter, magFilter, maxAnisotropy)); 3077 device->setMipmapFilter(samplerType, samplerIndex, es2sw::ConvertMipMapFilter(minFilter)); 3078 device->setMaxAnisotropy(samplerType, samplerIndex, maxAnisotropy); 3079 3080 applyTexture(samplerType, samplerIndex, texture); 3081 } 3082 else 3083 { 3084 applyTexture(samplerType, samplerIndex, nullptr); 3085 } 3086 } 3087 else 3088 { 3089 applyTexture(samplerType, samplerIndex, nullptr); 3090 } 3091 } 3092 } 3093 3094 void Context::applyTexture(sw::SamplerType type, int index, Texture *baseTexture) 3095 { 3096 Program *program = getCurrentProgram(); 3097 int sampler = (type == sw::SAMPLER_PIXEL) ? index : 16 + index; 3098 bool textureUsed = false; 3099 3100 if(type == sw::SAMPLER_PIXEL) 3101 { 3102 textureUsed = program->getPixelShader()->usesSampler(index); 3103 } 3104 else if(type == sw::SAMPLER_VERTEX) 3105 { 3106 textureUsed = program->getVertexShader()->usesSampler(index); 3107 } 3108 else UNREACHABLE(type); 3109 3110 sw::Resource *resource = 0; 3111 3112 if(baseTexture && textureUsed) 3113 { 3114 resource = baseTexture->getResource(); 3115 } 3116 3117 device->setTextureResource(sampler, resource); 3118 3119 if(baseTexture && textureUsed) 3120 { 3121 int levelCount = baseTexture->getLevelCount(); 3122 3123 if(baseTexture->getTarget() == GL_TEXTURE_2D || baseTexture->getTarget() == GL_TEXTURE_EXTERNAL_OES) 3124 { 3125 Texture2D *texture = static_cast<Texture2D*>(baseTexture); 3126 3127 for(int mipmapLevel = 0; mipmapLevel < sw::MIPMAP_LEVELS; mipmapLevel++) 3128 { 3129 int surfaceLevel = mipmapLevel; 3130 3131 if(surfaceLevel < 0) 3132 { 3133 surfaceLevel = 0; 3134 } 3135 else if(surfaceLevel >= levelCount) 3136 { 3137 surfaceLevel = levelCount - 1; 3138 } 3139 3140 egl::Image *surface = texture->getImage(surfaceLevel); 3141 device->setTextureLevel(sampler, 0, mipmapLevel, surface, sw::TEXTURE_2D); 3142 } 3143 } 3144 else if(baseTexture->getTarget() == GL_TEXTURE_3D_OES) 3145 { 3146 Texture3D *texture = static_cast<Texture3D*>(baseTexture); 3147 3148 for(int mipmapLevel = 0; mipmapLevel < sw::MIPMAP_LEVELS; mipmapLevel++) 3149 { 3150 int surfaceLevel = mipmapLevel; 3151 3152 if(surfaceLevel < 0) 3153 { 3154 surfaceLevel = 0; 3155 } 3156 else if(surfaceLevel >= levelCount) 3157 { 3158 surfaceLevel = levelCount - 1; 3159 } 3160 3161 egl::Image *surface = texture->getImage(surfaceLevel); 3162 device->setTextureLevel(sampler, 0, mipmapLevel, surface, sw::TEXTURE_3D); 3163 } 3164 } 3165 else if(baseTexture->getTarget() == GL_TEXTURE_2D_ARRAY) 3166 { 3167 Texture2DArray *texture = static_cast<Texture2DArray*>(baseTexture); 3168 3169 for(int mipmapLevel = 0; mipmapLevel < sw::MIPMAP_LEVELS; mipmapLevel++) 3170 { 3171 int surfaceLevel = mipmapLevel; 3172 3173 if(surfaceLevel < 0) 3174 { 3175 surfaceLevel = 0; 3176 } 3177 else if(surfaceLevel >= levelCount) 3178 { 3179 surfaceLevel = levelCount - 1; 3180 } 3181 3182 egl::Image *surface = texture->getImage(surfaceLevel); 3183 device->setTextureLevel(sampler, 0, mipmapLevel, surface, sw::TEXTURE_2D_ARRAY); 3184 } 3185 } 3186 else if(baseTexture->getTarget() == GL_TEXTURE_CUBE_MAP) 3187 { 3188 for(int face = 0; face < 6; face++) 3189 { 3190 TextureCubeMap *cubeTexture = static_cast<TextureCubeMap*>(baseTexture); 3191 3192 for(int mipmapLevel = 0; mipmapLevel < sw::MIPMAP_LEVELS; mipmapLevel++) 3193 { 3194 int surfaceLevel = mipmapLevel; 3195 3196 if(surfaceLevel < 0) 3197 { 3198 surfaceLevel = 0; 3199 } 3200 else if(surfaceLevel >= levelCount) 3201 { 3202 surfaceLevel = levelCount - 1; 3203 } 3204 3205 egl::Image *surface = cubeTexture->getImage(face, surfaceLevel); 3206 device->setTextureLevel(sampler, face, mipmapLevel, surface, sw::TEXTURE_CUBE); 3207 } 3208 } 3209 } 3210 else UNIMPLEMENTED(); 3211 } 3212 else 3213 { 3214 device->setTextureLevel(sampler, 0, 0, 0, sw::TEXTURE_NULL); 3215 } 3216 } 3217 3218 void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLsizei *bufSize, void* pixels) 3219 { 3220 Framebuffer *framebuffer = getReadFramebuffer(); 3221 int framebufferWidth, framebufferHeight, framebufferSamples; 3222 3223 if(framebuffer->completeness(framebufferWidth, framebufferHeight, framebufferSamples) != GL_FRAMEBUFFER_COMPLETE) 3224 { 3225 return error(GL_INVALID_FRAMEBUFFER_OPERATION); 3226 } 3227 3228 if(getReadFramebufferName() != 0 && framebufferSamples != 0) 3229 { 3230 return error(GL_INVALID_OPERATION); 3231 } 3232 3233 GLenum readFormat = GL_NONE; 3234 GLenum readType = GL_NONE; 3235 switch(format) 3236 { 3237 case GL_DEPTH_COMPONENT: 3238 readFormat = framebuffer->getDepthReadFormat(); 3239 readType = framebuffer->getDepthReadType(); 3240 break; 3241 default: 3242 readFormat = framebuffer->getImplementationColorReadFormat(); 3243 readType = framebuffer->getImplementationColorReadType(); 3244 break; 3245 } 3246 3247 if(!(readFormat == format && readType == type) && !ValidReadPixelsFormatType(readFormat, readType, format, type, clientVersion)) 3248 { 3249 return error(GL_INVALID_OPERATION); 3250 } 3251 3252 GLsizei outputWidth = (mState.packRowLength > 0) ? mState.packRowLength : width; 3253 GLsizei outputPitch = egl::ComputePitch(outputWidth, format, type, mState.packAlignment); 3254 GLsizei outputHeight = (mState.packImageHeight == 0) ? height : mState.packImageHeight; 3255 pixels = getPixelPackBuffer() ? (unsigned char*)getPixelPackBuffer()->data() + (ptrdiff_t)pixels : (unsigned char*)pixels; 3256 pixels = ((char*)pixels) + egl::ComputePackingOffset(format, type, outputWidth, outputHeight, mState.packAlignment, mState.packSkipImages, mState.packSkipRows, mState.packSkipPixels); 3257 3258 // Sized query sanity check 3259 if(bufSize) 3260 { 3261 int requiredSize = outputPitch * height; 3262 if(requiredSize > *bufSize) 3263 { 3264 return error(GL_INVALID_OPERATION); 3265 } 3266 } 3267 3268 egl::Image *renderTarget = nullptr; 3269 switch(format) 3270 { 3271 case GL_DEPTH_COMPONENT: 3272 renderTarget = framebuffer->getDepthBuffer(); 3273 break; 3274 default: 3275 renderTarget = framebuffer->getReadRenderTarget(); 3276 break; 3277 } 3278 3279 if(!renderTarget) 3280 { 3281 return error(GL_INVALID_OPERATION); 3282 } 3283 3284 sw::Rect rect = {x, y, x + width, y + height}; 3285 sw::Rect dstRect = { 0, 0, width, height }; 3286 rect.clip(0, 0, renderTarget->getWidth(), renderTarget->getHeight()); 3287 3288 sw::Surface externalSurface(width, height, 1, egl::ConvertFormatType(format, type), pixels, outputPitch, outputPitch * outputHeight); 3289 sw::SliceRect sliceRect(rect); 3290 sw::SliceRect dstSliceRect(dstRect); 3291 device->blit(renderTarget, sliceRect, &externalSurface, dstSliceRect, false); 3292 3293 renderTarget->release(); 3294 } 3295 3296 void Context::clear(GLbitfield mask) 3297 { 3298 if(mState.rasterizerDiscardEnabled) 3299 { 3300 return; 3301 } 3302 3303 Framebuffer *framebuffer = getDrawFramebuffer(); 3304 3305 if(!framebuffer || framebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE) 3306 { 3307 return error(GL_INVALID_FRAMEBUFFER_OPERATION); 3308 } 3309 3310 if(!applyRenderTarget()) 3311 { 3312 return; 3313 } 3314 3315 if(mask & GL_COLOR_BUFFER_BIT) 3316 { 3317 unsigned int rgbaMask = getColorMask(); 3318 3319 if(rgbaMask != 0) 3320 { 3321 device->clearColor(mState.colorClearValue.red, mState.colorClearValue.green, mState.colorClearValue.blue, mState.colorClearValue.alpha, rgbaMask); 3322 } 3323 } 3324 3325 if(mask & GL_DEPTH_BUFFER_BIT) 3326 { 3327 if(mState.depthMask != 0) 3328 { 3329 float depth = clamp01(mState.depthClearValue); 3330 device->clearDepth(depth); 3331 } 3332 } 3333 3334 if(mask & GL_STENCIL_BUFFER_BIT) 3335 { 3336 if(mState.stencilWritemask != 0) 3337 { 3338 int stencil = mState.stencilClearValue & 0x000000FF; 3339 device->clearStencil(stencil, mState.stencilWritemask); 3340 } 3341 } 3342 } 3343 3344 void Context::clearColorBuffer(GLint drawbuffer, void *value, sw::Format format) 3345 { 3346 unsigned int rgbaMask = getColorMask(); 3347 if(rgbaMask && !mState.rasterizerDiscardEnabled) 3348 { 3349 Framebuffer *framebuffer = getDrawFramebuffer(); 3350 egl::Image *colorbuffer = framebuffer->getRenderTarget(drawbuffer); 3351 3352 if(colorbuffer) 3353 { 3354 sw::SliceRect clearRect = colorbuffer->getRect(); 3355 3356 if(mState.scissorTestEnabled) 3357 { 3358 clearRect.clip(mState.scissorX, mState.scissorY, mState.scissorX + mState.scissorWidth, mState.scissorY + mState.scissorHeight); 3359 } 3360 3361 device->clear(value, format, colorbuffer, clearRect, rgbaMask); 3362 3363 colorbuffer->release(); 3364 } 3365 } 3366 } 3367 3368 void Context::clearColorBuffer(GLint drawbuffer, const GLint *value) 3369 { 3370 clearColorBuffer(drawbuffer, (void*)value, sw::FORMAT_A32B32G32R32I); 3371 } 3372 3373 void Context::clearColorBuffer(GLint drawbuffer, const GLuint *value) 3374 { 3375 clearColorBuffer(drawbuffer, (void*)value, sw::FORMAT_A32B32G32R32UI); 3376 } 3377 3378 void Context::clearColorBuffer(GLint drawbuffer, const GLfloat *value) 3379 { 3380 clearColorBuffer(drawbuffer, (void*)value, sw::FORMAT_A32B32G32R32F); 3381 } 3382 3383 void Context::clearDepthBuffer(const GLfloat value) 3384 { 3385 if(mState.depthMask && !mState.rasterizerDiscardEnabled) 3386 { 3387 Framebuffer *framebuffer = getDrawFramebuffer(); 3388 egl::Image *depthbuffer = framebuffer->getDepthBuffer(); 3389 3390 if(depthbuffer) 3391 { 3392 float depth = clamp01(value); 3393 sw::SliceRect clearRect = depthbuffer->getRect(); 3394 3395 if(mState.scissorTestEnabled) 3396 { 3397 clearRect.clip(mState.scissorX, mState.scissorY, mState.scissorX + mState.scissorWidth, mState.scissorY + mState.scissorHeight); 3398 } 3399 3400 depthbuffer->clearDepth(depth, clearRect.x0, clearRect.y0, clearRect.width(), clearRect.height()); 3401 3402 depthbuffer->release(); 3403 } 3404 } 3405 } 3406 3407 void Context::clearStencilBuffer(const GLint value) 3408 { 3409 if(mState.stencilWritemask && !mState.rasterizerDiscardEnabled) 3410 { 3411 Framebuffer *framebuffer = getDrawFramebuffer(); 3412 egl::Image *stencilbuffer = framebuffer->getStencilBuffer(); 3413 3414 if(stencilbuffer) 3415 { 3416 unsigned char stencil = value < 0 ? 0 : static_cast<unsigned char>(value & 0x000000FF); 3417 sw::SliceRect clearRect = stencilbuffer->getRect(); 3418 3419 if(mState.scissorTestEnabled) 3420 { 3421 clearRect.clip(mState.scissorX, mState.scissorY, mState.scissorX + mState.scissorWidth, mState.scissorY + mState.scissorHeight); 3422 } 3423 3424 stencilbuffer->clearStencil(stencil, static_cast<unsigned char>(mState.stencilWritemask), clearRect.x0, clearRect.y0, clearRect.width(), clearRect.height()); 3425 3426 stencilbuffer->release(); 3427 } 3428 } 3429 } 3430 3431 void Context::drawArrays(GLenum mode, GLint first, GLsizei count, GLsizei instanceCount) 3432 { 3433 if(!mState.currentProgram) 3434 { 3435 return error(GL_INVALID_OPERATION); 3436 } 3437 3438 sw::DrawType primitiveType; 3439 int primitiveCount; 3440 int verticesPerPrimitive; 3441 3442 if(!es2sw::ConvertPrimitiveType(mode, count, GL_NONE, primitiveType, primitiveCount, verticesPerPrimitive)) 3443 return error(GL_INVALID_ENUM); 3444 3445 if(primitiveCount <= 0) 3446 { 3447 return; 3448 } 3449 3450 if(!applyRenderTarget()) 3451 { 3452 return; 3453 } 3454 3455 applyState(mode); 3456 3457 for(int i = 0; i < instanceCount; ++i) 3458 { 3459 device->setInstanceID(i); 3460 3461 GLenum err = applyVertexBuffer(0, first, count, i); 3462 if(err != GL_NO_ERROR) 3463 { 3464 return error(err); 3465 } 3466 3467 applyShaders(); 3468 applyTextures(); 3469 3470 if(!getCurrentProgram()->validateSamplers(false)) 3471 { 3472 return error(GL_INVALID_OPERATION); 3473 } 3474 3475 TransformFeedback* transformFeedback = getTransformFeedback(); 3476 if(!cullSkipsDraw(mode) || (transformFeedback->isActive() && !transformFeedback->isPaused())) 3477 { 3478 device->drawPrimitive(primitiveType, primitiveCount); 3479 } 3480 if(transformFeedback) 3481 { 3482 transformFeedback->addVertexOffset(primitiveCount * verticesPerPrimitive); 3483 } 3484 } 3485 } 3486 3487 void Context::drawElements(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const void *indices, GLsizei instanceCount) 3488 { 3489 if(!mState.currentProgram) 3490 { 3491 return error(GL_INVALID_OPERATION); 3492 } 3493 3494 if(!indices && !getCurrentVertexArray()->getElementArrayBuffer()) 3495 { 3496 return error(GL_INVALID_OPERATION); 3497 } 3498 3499 sw::DrawType primitiveType; 3500 int primitiveCount; 3501 int verticesPerPrimitive; 3502 3503 if(!es2sw::ConvertPrimitiveType(mode, count, type, primitiveType, primitiveCount, verticesPerPrimitive)) 3504 return error(GL_INVALID_ENUM); 3505 3506 if(primitiveCount <= 0) 3507 { 3508 return; 3509 } 3510 3511 if(!applyRenderTarget()) 3512 { 3513 return; 3514 } 3515 3516 applyState(mode); 3517 3518 for(int i = 0; i < instanceCount; ++i) 3519 { 3520 device->setInstanceID(i); 3521 3522 TranslatedIndexData indexInfo; 3523 GLenum err = applyIndexBuffer(indices, start, end, count, mode, type, &indexInfo); 3524 if(err != GL_NO_ERROR) 3525 { 3526 return error(err); 3527 } 3528 3529 GLsizei vertexCount = indexInfo.maxIndex - indexInfo.minIndex + 1; 3530 err = applyVertexBuffer(-(int)indexInfo.minIndex, indexInfo.minIndex, vertexCount, i); 3531 if(err != GL_NO_ERROR) 3532 { 3533 return error(err); 3534 } 3535 3536 applyShaders(); 3537 applyTextures(); 3538 3539 if(!getCurrentProgram()->validateSamplers(false)) 3540 { 3541 return error(GL_INVALID_OPERATION); 3542 } 3543 3544 TransformFeedback* transformFeedback = getTransformFeedback(); 3545 if(!cullSkipsDraw(mode) || (transformFeedback->isActive() && !transformFeedback->isPaused())) 3546 { 3547 device->drawIndexedPrimitive(primitiveType, indexInfo.indexOffset, primitiveCount); 3548 } 3549 if(transformFeedback) 3550 { 3551 transformFeedback->addVertexOffset(primitiveCount * verticesPerPrimitive); 3552 } 3553 } 3554 } 3555 3556 void Context::finish() 3557 { 3558 device->finish(); 3559 } 3560 3561 void Context::flush() 3562 { 3563 // We don't queue anything without processing it as fast as possible 3564 } 3565 3566 void Context::recordInvalidEnum() 3567 { 3568 mInvalidEnum = true; 3569 } 3570 3571 void Context::recordInvalidValue() 3572 { 3573 mInvalidValue = true; 3574 } 3575 3576 void Context::recordInvalidOperation() 3577 { 3578 mInvalidOperation = true; 3579 } 3580 3581 void Context::recordOutOfMemory() 3582 { 3583 mOutOfMemory = true; 3584 } 3585 3586 void Context::recordInvalidFramebufferOperation() 3587 { 3588 mInvalidFramebufferOperation = true; 3589 } 3590 3591 // Get one of the recorded errors and clear its flag, if any. 3592 // [OpenGL ES 2.0.24] section 2.5 page 13. 3593 GLenum Context::getError() 3594 { 3595 if(mInvalidEnum) 3596 { 3597 mInvalidEnum = false; 3598 3599 return GL_INVALID_ENUM; 3600 } 3601 3602 if(mInvalidValue) 3603 { 3604 mInvalidValue = false; 3605 3606 return GL_INVALID_VALUE; 3607 } 3608 3609 if(mInvalidOperation) 3610 { 3611 mInvalidOperation = false; 3612 3613 return GL_INVALID_OPERATION; 3614 } 3615 3616 if(mOutOfMemory) 3617 { 3618 mOutOfMemory = false; 3619 3620 return GL_OUT_OF_MEMORY; 3621 } 3622 3623 if(mInvalidFramebufferOperation) 3624 { 3625 mInvalidFramebufferOperation = false; 3626 3627 return GL_INVALID_FRAMEBUFFER_OPERATION; 3628 } 3629 3630 return GL_NO_ERROR; 3631 } 3632 3633 int Context::getSupportedMultisampleCount(int requested) 3634 { 3635 int supported = 0; 3636 3637 for(int i = NUM_MULTISAMPLE_COUNTS - 1; i >= 0; i--) 3638 { 3639 if(supported >= requested) 3640 { 3641 return supported; 3642 } 3643 3644 supported = multisampleCount[i]; 3645 } 3646 3647 return supported; 3648 } 3649 3650 void Context::detachBuffer(GLuint buffer) 3651 { 3652 // [OpenGL ES 2.0.24] section 2.9 page 22: 3653 // If a buffer object is deleted while it is bound, all bindings to that object in the current context 3654 // (i.e. in the thread that called Delete-Buffers) are reset to zero. 3655 3656 if(mState.copyReadBuffer.name() == buffer) 3657 { 3658 mState.copyReadBuffer = nullptr; 3659 } 3660 3661 if(mState.copyWriteBuffer.name() == buffer) 3662 { 3663 mState.copyWriteBuffer = nullptr; 3664 } 3665 3666 if(mState.pixelPackBuffer.name() == buffer) 3667 { 3668 mState.pixelPackBuffer = nullptr; 3669 } 3670 3671 if(mState.pixelUnpackBuffer.name() == buffer) 3672 { 3673 mState.pixelUnpackBuffer = nullptr; 3674 } 3675 3676 if(mState.genericUniformBuffer.name() == buffer) 3677 { 3678 mState.genericUniformBuffer = nullptr; 3679 } 3680 3681 if(getArrayBufferName() == buffer) 3682 { 3683 mState.arrayBuffer = nullptr; 3684 } 3685 3686 // Only detach from the current transform feedback 3687 TransformFeedback* currentTransformFeedback = getTransformFeedback(); 3688 if(currentTransformFeedback) 3689 { 3690 currentTransformFeedback->detachBuffer(buffer); 3691 } 3692 3693 // Only detach from the current vertex array 3694 VertexArray* currentVertexArray = getCurrentVertexArray(); 3695 if(currentVertexArray) 3696 { 3697 currentVertexArray->detachBuffer(buffer); 3698 } 3699 3700 for(int attribute = 0; attribute < MAX_VERTEX_ATTRIBS; attribute++) 3701 { 3702 if(mState.vertexAttribute[attribute].mBoundBuffer.name() == buffer) 3703 { 3704 mState.vertexAttribute[attribute].mBoundBuffer = nullptr; 3705 } 3706 } 3707 } 3708 3709 void Context::detachTexture(GLuint texture) 3710 { 3711 // [OpenGL ES 2.0.24] section 3.8 page 84: 3712 // If a texture object is deleted, it is as if all texture units which are bound to that texture object are 3713 // rebound to texture object zero 3714 3715 for(int type = 0; type < TEXTURE_TYPE_COUNT; type++) 3716 { 3717 for(int sampler = 0; sampler < MAX_COMBINED_TEXTURE_IMAGE_UNITS; sampler++) 3718 { 3719 if(mState.samplerTexture[type][sampler].name() == texture) 3720 { 3721 mState.samplerTexture[type][sampler] = nullptr; 3722 } 3723 } 3724 } 3725 3726 // [OpenGL ES 2.0.24] section 4.4 page 112: 3727 // If a texture object is deleted while its image is attached to the currently bound framebuffer, then it is 3728 // as if FramebufferTexture2D had been called, with a texture of 0, for each attachment point to which this 3729 // image was attached in the currently bound framebuffer. 3730 3731 Framebuffer *readFramebuffer = getReadFramebuffer(); 3732 Framebuffer *drawFramebuffer = getDrawFramebuffer(); 3733 3734 if(readFramebuffer) 3735 { 3736 readFramebuffer->detachTexture(texture); 3737 } 3738 3739 if(drawFramebuffer && drawFramebuffer != readFramebuffer) 3740 { 3741 drawFramebuffer->detachTexture(texture); 3742 } 3743 } 3744 3745 void Context::detachFramebuffer(GLuint framebuffer) 3746 { 3747 // [OpenGL ES 2.0.24] section 4.4 page 107: 3748 // If a framebuffer that is currently bound to the target FRAMEBUFFER is deleted, it is as though 3749 // BindFramebuffer had been executed with the target of FRAMEBUFFER and framebuffer of zero. 3750 3751 if(mState.readFramebuffer == framebuffer) 3752 { 3753 bindReadFramebuffer(0); 3754 } 3755 3756 if(mState.drawFramebuffer == framebuffer) 3757 { 3758 bindDrawFramebuffer(0); 3759 } 3760 } 3761 3762 void Context::detachRenderbuffer(GLuint renderbuffer) 3763 { 3764 // [OpenGL ES 2.0.24] section 4.4 page 109: 3765 // If a renderbuffer that is currently bound to RENDERBUFFER is deleted, it is as though BindRenderbuffer 3766 // had been executed with the target RENDERBUFFER and name of zero. 3767 3768 if(mState.renderbuffer.name() == renderbuffer) 3769 { 3770 bindRenderbuffer(0); 3771 } 3772 3773 // [OpenGL ES 2.0.24] section 4.4 page 111: 3774 // If a renderbuffer object is deleted while its image is attached to the currently bound framebuffer, 3775 // then it is as if FramebufferRenderbuffer had been called, with a renderbuffer of 0, for each attachment 3776 // point to which this image was attached in the currently bound framebuffer. 3777 3778 Framebuffer *readFramebuffer = getReadFramebuffer(); 3779 Framebuffer *drawFramebuffer = getDrawFramebuffer(); 3780 3781 if(readFramebuffer) 3782 { 3783 readFramebuffer->detachRenderbuffer(renderbuffer); 3784 } 3785 3786 if(drawFramebuffer && drawFramebuffer != readFramebuffer) 3787 { 3788 drawFramebuffer->detachRenderbuffer(renderbuffer); 3789 } 3790 } 3791 3792 void Context::detachSampler(GLuint sampler) 3793 { 3794 // [OpenGL ES 3.0.2] section 3.8.2 pages 123-124: 3795 // If a sampler object that is currently bound to one or more texture units is 3796 // deleted, it is as though BindSampler is called once for each texture unit to 3797 // which the sampler is bound, with unit set to the texture unit and sampler set to zero. 3798 for(size_t textureUnit = 0; textureUnit < MAX_COMBINED_TEXTURE_IMAGE_UNITS; ++textureUnit) 3799 { 3800 gl::BindingPointer<Sampler> &samplerBinding = mState.sampler[textureUnit]; 3801 if(samplerBinding.name() == sampler) 3802 { 3803 samplerBinding = nullptr; 3804 } 3805 } 3806 } 3807 3808 bool Context::cullSkipsDraw(GLenum drawMode) 3809 { 3810 return mState.cullFaceEnabled && mState.cullMode == GL_FRONT_AND_BACK && isTriangleMode(drawMode); 3811 } 3812 3813 bool Context::isTriangleMode(GLenum drawMode) 3814 { 3815 switch(drawMode) 3816 { 3817 case GL_TRIANGLES: 3818 case GL_TRIANGLE_FAN: 3819 case GL_TRIANGLE_STRIP: 3820 return true; 3821 case GL_POINTS: 3822 case GL_LINES: 3823 case GL_LINE_LOOP: 3824 case GL_LINE_STRIP: 3825 return false; 3826 default: UNREACHABLE(drawMode); 3827 } 3828 3829 return false; 3830 } 3831 3832 void Context::setVertexAttrib(GLuint index, const GLfloat *values) 3833 { 3834 ASSERT(index < MAX_VERTEX_ATTRIBS); 3835 3836 mState.vertexAttribute[index].setCurrentValue(values); 3837 3838 mVertexDataManager->dirtyCurrentValue(index); 3839 } 3840 3841 void Context::setVertexAttrib(GLuint index, const GLint *values) 3842 { 3843 ASSERT(index < MAX_VERTEX_ATTRIBS); 3844 3845 mState.vertexAttribute[index].setCurrentValue(values); 3846 3847 mVertexDataManager->dirtyCurrentValue(index); 3848 } 3849 3850 void Context::setVertexAttrib(GLuint index, const GLuint *values) 3851 { 3852 ASSERT(index < MAX_VERTEX_ATTRIBS); 3853 3854 mState.vertexAttribute[index].setCurrentValue(values); 3855 3856 mVertexDataManager->dirtyCurrentValue(index); 3857 } 3858 3859 void Context::blitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, 3860 GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, 3861 GLbitfield mask) 3862 { 3863 Framebuffer *readFramebuffer = getReadFramebuffer(); 3864 Framebuffer *drawFramebuffer = getDrawFramebuffer(); 3865 3866 int readBufferWidth, readBufferHeight, readBufferSamples; 3867 int drawBufferWidth, drawBufferHeight, drawBufferSamples; 3868 3869 if(!readFramebuffer || readFramebuffer->completeness(readBufferWidth, readBufferHeight, readBufferSamples) != GL_FRAMEBUFFER_COMPLETE || 3870 !drawFramebuffer || drawFramebuffer->completeness(drawBufferWidth, drawBufferHeight, drawBufferSamples) != GL_FRAMEBUFFER_COMPLETE) 3871 { 3872 return error(GL_INVALID_FRAMEBUFFER_OPERATION); 3873 } 3874 3875 if(drawBufferSamples > 1) 3876 { 3877 return error(GL_INVALID_OPERATION); 3878 } 3879 3880 sw::SliceRect sourceRect; 3881 sw::SliceRect destRect; 3882 bool flipX = (srcX0 < srcX1) ^ (dstX0 < dstX1); 3883 bool flipy = (srcY0 < srcY1) ^ (dstY0 < dstY1); 3884 3885 if(srcX0 < srcX1) 3886 { 3887 sourceRect.x0 = srcX0; 3888 sourceRect.x1 = srcX1; 3889 } 3890 else 3891 { 3892 sourceRect.x0 = srcX1; 3893 sourceRect.x1 = srcX0; 3894 } 3895 3896 if(dstX0 < dstX1) 3897 { 3898 destRect.x0 = dstX0; 3899 destRect.x1 = dstX1; 3900 } 3901 else 3902 { 3903 destRect.x0 = dstX1; 3904 destRect.x1 = dstX0; 3905 } 3906 3907 if(srcY0 < srcY1) 3908 { 3909 sourceRect.y0 = srcY0; 3910 sourceRect.y1 = srcY1; 3911 } 3912 else 3913 { 3914 sourceRect.y0 = srcY1; 3915 sourceRect.y1 = srcY0; 3916 } 3917 3918 if(dstY0 < dstY1) 3919 { 3920 destRect.y0 = dstY0; 3921 destRect.y1 = dstY1; 3922 } 3923 else 3924 { 3925 destRect.y0 = dstY1; 3926 destRect.y1 = dstY0; 3927 } 3928 3929 sw::Rect sourceScissoredRect = sourceRect; 3930 sw::Rect destScissoredRect = destRect; 3931 3932 if(mState.scissorTestEnabled) // Only write to parts of the destination framebuffer which pass the scissor test 3933 { 3934 if(destRect.x0 < mState.scissorX) 3935 { 3936 int xDiff = mState.scissorX - destRect.x0; 3937 destScissoredRect.x0 = mState.scissorX; 3938 sourceScissoredRect.x0 += xDiff; 3939 } 3940 3941 if(destRect.x1 > mState.scissorX + mState.scissorWidth) 3942 { 3943 int xDiff = destRect.x1 - (mState.scissorX + mState.scissorWidth); 3944 destScissoredRect.x1 = mState.scissorX + mState.scissorWidth; 3945 sourceScissoredRect.x1 -= xDiff; 3946 } 3947 3948 if(destRect.y0 < mState.scissorY) 3949 { 3950 int yDiff = mState.scissorY - destRect.y0; 3951 destScissoredRect.y0 = mState.scissorY; 3952 sourceScissoredRect.y0 += yDiff; 3953 } 3954 3955 if(destRect.y1 > mState.scissorY + mState.scissorHeight) 3956 { 3957 int yDiff = destRect.y1 - (mState.scissorY + mState.scissorHeight); 3958 destScissoredRect.y1 = mState.scissorY + mState.scissorHeight; 3959 sourceScissoredRect.y1 -= yDiff; 3960 } 3961 } 3962 3963 sw::Rect sourceTrimmedRect = sourceScissoredRect; 3964 sw::Rect destTrimmedRect = destScissoredRect; 3965 3966 // The source & destination rectangles also may need to be trimmed if they fall out of the bounds of 3967 // the actual draw and read surfaces. 3968 if(sourceTrimmedRect.x0 < 0) 3969 { 3970 int xDiff = 0 - sourceTrimmedRect.x0; 3971 sourceTrimmedRect.x0 = 0; 3972 destTrimmedRect.x0 += xDiff; 3973 } 3974 3975 if(sourceTrimmedRect.x1 > readBufferWidth) 3976 { 3977 int xDiff = sourceTrimmedRect.x1 - readBufferWidth; 3978 sourceTrimmedRect.x1 = readBufferWidth; 3979 destTrimmedRect.x1 -= xDiff; 3980 } 3981 3982 if(sourceTrimmedRect.y0 < 0) 3983 { 3984 int yDiff = 0 - sourceTrimmedRect.y0; 3985 sourceTrimmedRect.y0 = 0; 3986 destTrimmedRect.y0 += yDiff; 3987 } 3988 3989 if(sourceTrimmedRect.y1 > readBufferHeight) 3990 { 3991 int yDiff = sourceTrimmedRect.y1 - readBufferHeight; 3992 sourceTrimmedRect.y1 = readBufferHeight; 3993 destTrimmedRect.y1 -= yDiff; 3994 } 3995 3996 if(destTrimmedRect.x0 < 0) 3997 { 3998 int xDiff = 0 - destTrimmedRect.x0; 3999 destTrimmedRect.x0 = 0; 4000 sourceTrimmedRect.x0 += xDiff; 4001 } 4002 4003 if(destTrimmedRect.x1 > drawBufferWidth) 4004 { 4005 int xDiff = destTrimmedRect.x1 - drawBufferWidth; 4006 destTrimmedRect.x1 = drawBufferWidth; 4007 sourceTrimmedRect.x1 -= xDiff; 4008 } 4009 4010 if(destTrimmedRect.y0 < 0) 4011 { 4012 int yDiff = 0 - destTrimmedRect.y0; 4013 destTrimmedRect.y0 = 0; 4014 sourceTrimmedRect.y0 += yDiff; 4015 } 4016 4017 if(destTrimmedRect.y1 > drawBufferHeight) 4018 { 4019 int yDiff = destTrimmedRect.y1 - drawBufferHeight; 4020 destTrimmedRect.y1 = drawBufferHeight; 4021 sourceTrimmedRect.y1 -= yDiff; 4022 } 4023 4024 bool partialBufferCopy = false; 4025 4026 if(sourceTrimmedRect.y1 - sourceTrimmedRect.y0 < readBufferHeight || 4027 sourceTrimmedRect.x1 - sourceTrimmedRect.x0 < readBufferWidth || 4028 destTrimmedRect.y1 - destTrimmedRect.y0 < drawBufferHeight || 4029 destTrimmedRect.x1 - destTrimmedRect.x0 < drawBufferWidth || 4030 sourceTrimmedRect.y0 != 0 || destTrimmedRect.y0 != 0 || sourceTrimmedRect.x0 != 0 || destTrimmedRect.x0 != 0) 4031 { 4032 partialBufferCopy = true; 4033 } 4034 4035 bool blitRenderTarget = false; 4036 bool blitDepthStencil = false; 4037 4038 if(mask & GL_COLOR_BUFFER_BIT) 4039 { 4040 GLenum readColorbufferType = readFramebuffer->getColorbufferType(getReadFramebufferColorIndex()); 4041 GLenum drawColorbufferType = drawFramebuffer->getColorbufferType(0); 4042 const bool validReadType = readColorbufferType == GL_TEXTURE_2D || Framebuffer::IsRenderbuffer(readColorbufferType); 4043 const bool validDrawType = drawColorbufferType == GL_TEXTURE_2D || Framebuffer::IsRenderbuffer(drawColorbufferType); 4044 if(!validReadType || !validDrawType) 4045 { 4046 return error(GL_INVALID_OPERATION); 4047 } 4048 4049 if(partialBufferCopy && readBufferSamples > 1) 4050 { 4051 return error(GL_INVALID_OPERATION); 4052 } 4053 4054 blitRenderTarget = true; 4055 } 4056 4057 if(mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT)) 4058 { 4059 Renderbuffer *readDSBuffer = nullptr; 4060 Renderbuffer *drawDSBuffer = nullptr; 4061 4062 if(mask & GL_DEPTH_BUFFER_BIT) 4063 { 4064 if(readFramebuffer->getDepthbuffer() && drawFramebuffer->getDepthbuffer()) 4065 { 4066 if(readFramebuffer->getDepthbufferType() != drawFramebuffer->getDepthbufferType()) 4067 { 4068 return error(GL_INVALID_OPERATION); 4069 } 4070 4071 blitDepthStencil = true; 4072 readDSBuffer = readFramebuffer->getDepthbuffer(); 4073 drawDSBuffer = drawFramebuffer->getDepthbuffer(); 4074 } 4075 } 4076 4077 if(mask & GL_STENCIL_BUFFER_BIT) 4078 { 4079 if(readFramebuffer->getStencilbuffer() && drawFramebuffer->getStencilbuffer()) 4080 { 4081 if(readFramebuffer->getStencilbufferType() != drawFramebuffer->getStencilbufferType()) 4082 { 4083 return error(GL_INVALID_OPERATION); 4084 } 4085 4086 blitDepthStencil = true; 4087 readDSBuffer = readFramebuffer->getStencilbuffer(); 4088 drawDSBuffer = drawFramebuffer->getStencilbuffer(); 4089 } 4090 } 4091 4092 if(partialBufferCopy) 4093 { 4094 ERR("Only whole-buffer depth and stencil blits are supported by this implementation."); 4095 return error(GL_INVALID_OPERATION); // Only whole-buffer copies are permitted 4096 } 4097 4098 if((drawDSBuffer && drawDSBuffer->getSamples() > 1) || 4099 (readDSBuffer && readDSBuffer->getSamples() > 1)) 4100 { 4101 return error(GL_INVALID_OPERATION); 4102 } 4103 } 4104 4105 if(blitRenderTarget || blitDepthStencil) 4106 { 4107 if(blitRenderTarget) 4108 { 4109 egl::Image *readRenderTarget = readFramebuffer->getReadRenderTarget(); 4110 egl::Image *drawRenderTarget = drawFramebuffer->getRenderTarget(0); 4111 4112 if(flipX) 4113 { 4114 swap(destRect.x0, destRect.x1); 4115 } 4116 if(flipy) 4117 { 4118 swap(destRect.y0, destRect.y1); 4119 } 4120 4121 bool success = device->stretchRect(readRenderTarget, &sourceRect, drawRenderTarget, &destRect, false); 4122 4123 readRenderTarget->release(); 4124 drawRenderTarget->release(); 4125 4126 if(!success) 4127 { 4128 ERR("BlitFramebuffer failed."); 4129 return; 4130 } 4131 } 4132 4133 if(blitDepthStencil) 4134 { 4135 bool success = device->stretchRect(readFramebuffer->getDepthBuffer(), nullptr, drawFramebuffer->getDepthBuffer(), nullptr, false); 4136 4137 if(!success) 4138 { 4139 ERR("BlitFramebuffer failed."); 4140 return; 4141 } 4142 } 4143 } 4144 } 4145 4146 void Context::bindTexImage(egl::Surface *surface) 4147 { 4148 es2::Texture2D *textureObject = getTexture2D(); 4149 4150 if(textureObject) 4151 { 4152 textureObject->bindTexImage(surface); 4153 } 4154 } 4155 4156 EGLenum Context::validateSharedImage(EGLenum target, GLuint name, GLuint textureLevel) 4157 { 4158 GLenum textureTarget = GL_NONE; 4159 4160 switch(target) 4161 { 4162 case EGL_GL_TEXTURE_2D_KHR: 4163 textureTarget = GL_TEXTURE_2D; 4164 break; 4165 case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR: 4166 case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR: 4167 case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR: 4168 case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR: 4169 case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR: 4170 case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR: 4171 textureTarget = GL_TEXTURE_CUBE_MAP; 4172 break; 4173 case EGL_GL_RENDERBUFFER_KHR: 4174 break; 4175 default: 4176 return EGL_BAD_PARAMETER; 4177 } 4178 4179 if(textureLevel >= es2::IMPLEMENTATION_MAX_TEXTURE_LEVELS) 4180 { 4181 return EGL_BAD_MATCH; 4182 } 4183 4184 if(textureTarget != GL_NONE) 4185 { 4186 es2::Texture *texture = getTexture(name); 4187 4188 if(!texture || texture->getTarget() != textureTarget) 4189 { 4190 return EGL_BAD_PARAMETER; 4191 } 4192 4193 if(texture->isShared(textureTarget, textureLevel)) // Bound to an EGLSurface or already an EGLImage sibling 4194 { 4195 return EGL_BAD_ACCESS; 4196 } 4197 4198 if(textureLevel != 0 && !texture->isSamplerComplete()) 4199 { 4200 return EGL_BAD_PARAMETER; 4201 } 4202 4203 if(textureLevel == 0 && !(texture->isSamplerComplete() && texture->getLevelCount() == 1)) 4204 { 4205 return EGL_BAD_PARAMETER; 4206 } 4207 } 4208 else if(target == EGL_GL_RENDERBUFFER_KHR) 4209 { 4210 es2::Renderbuffer *renderbuffer = getRenderbuffer(name); 4211 4212 if(!renderbuffer) 4213 { 4214 return EGL_BAD_PARAMETER; 4215 } 4216 4217 if(renderbuffer->isShared()) // Already an EGLImage sibling 4218 { 4219 return EGL_BAD_ACCESS; 4220 } 4221 } 4222 else UNREACHABLE(target); 4223 4224 return EGL_SUCCESS; 4225 } 4226 4227 egl::Image *Context::createSharedImage(EGLenum target, GLuint name, GLuint textureLevel) 4228 { 4229 GLenum textureTarget = GL_NONE; 4230 4231 switch(target) 4232 { 4233 case EGL_GL_TEXTURE_2D_KHR: textureTarget = GL_TEXTURE_2D; break; 4234 case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR: textureTarget = GL_TEXTURE_CUBE_MAP_POSITIVE_X; break; 4235 case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR: textureTarget = GL_TEXTURE_CUBE_MAP_NEGATIVE_X; break; 4236 case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR: textureTarget = GL_TEXTURE_CUBE_MAP_POSITIVE_Y; break; 4237 case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR: textureTarget = GL_TEXTURE_CUBE_MAP_NEGATIVE_Y; break; 4238 case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR: textureTarget = GL_TEXTURE_CUBE_MAP_POSITIVE_Z; break; 4239 case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR: textureTarget = GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; break; 4240 } 4241 4242 if(textureTarget != GL_NONE) 4243 { 4244 es2::Texture *texture = getTexture(name); 4245 4246 return texture->createSharedImage(textureTarget, textureLevel); 4247 } 4248 else if(target == EGL_GL_RENDERBUFFER_KHR) 4249 { 4250 es2::Renderbuffer *renderbuffer = getRenderbuffer(name); 4251 4252 return renderbuffer->createSharedImage(); 4253 } 4254 else UNREACHABLE(target); 4255 4256 return 0; 4257 } 4258 4259 Device *Context::getDevice() 4260 { 4261 return device; 4262 } 4263 4264 const GLubyte* Context::getExtensions(GLuint index, GLuint* numExt) const 4265 { 4266 // Keep list sorted in following order: 4267 // OES extensions 4268 // EXT extensions 4269 // Vendor extensions 4270 static const GLubyte* extensions[] = { 4271 (const GLubyte*)"GL_OES_compressed_ETC1_RGB8_texture", 4272 (const GLubyte*)"GL_OES_depth24", 4273 (const GLubyte*)"GL_OES_depth32", 4274 (const GLubyte*)"GL_OES_depth_texture", 4275 (const GLubyte*)"GL_OES_depth_texture_cube_map", 4276 (const GLubyte*)"GL_OES_EGL_image", 4277 (const GLubyte*)"GL_OES_EGL_image_external", 4278 (const GLubyte*)"GL_OES_EGL_sync", 4279 (const GLubyte*)"GL_OES_element_index_uint", 4280 (const GLubyte*)"GL_OES_framebuffer_object", 4281 (const GLubyte*)"GL_OES_packed_depth_stencil", 4282 (const GLubyte*)"GL_OES_rgb8_rgba8", 4283 (const GLubyte*)"GL_OES_standard_derivatives", 4284 (const GLubyte*)"GL_OES_texture_float", 4285 (const GLubyte*)"GL_OES_texture_float_linear", 4286 (const GLubyte*)"GL_OES_texture_half_float", 4287 (const GLubyte*)"GL_OES_texture_half_float_linear", 4288 (const GLubyte*)"GL_OES_texture_npot", 4289 (const GLubyte*)"GL_OES_texture_3D", 4290 (const GLubyte*)"GL_EXT_blend_minmax", 4291 (const GLubyte*)"GL_EXT_color_buffer_half_float", 4292 (const GLubyte*)"GL_EXT_draw_buffers", 4293 (const GLubyte*)"GL_EXT_occlusion_query_boolean", 4294 (const GLubyte*)"GL_EXT_read_format_bgra", 4295 #if (S3TC_SUPPORT) 4296 (const GLubyte*)"GL_EXT_texture_compression_dxt1", 4297 #endif 4298 (const GLubyte*)"GL_EXT_texture_filter_anisotropic", 4299 (const GLubyte*)"GL_EXT_texture_format_BGRA8888", 4300 (const GLubyte*)"GL_ANGLE_framebuffer_blit", 4301 (const GLubyte*)"GL_NV_framebuffer_blit", 4302 (const GLubyte*)"GL_ANGLE_framebuffer_multisample", 4303 #if (S3TC_SUPPORT) 4304 (const GLubyte*)"GL_ANGLE_texture_compression_dxt3", 4305 (const GLubyte*)"GL_ANGLE_texture_compression_dxt5", 4306 #endif 4307 (const GLubyte*)"GL_NV_fence", 4308 (const GLubyte*)"GL_NV_read_depth", 4309 (const GLubyte*)"GL_EXT_instanced_arrays", 4310 (const GLubyte*)"GL_ANGLE_instanced_arrays", 4311 }; 4312 static const GLuint numExtensions = sizeof(extensions) / sizeof(*extensions); 4313 4314 if(numExt) 4315 { 4316 *numExt = numExtensions; 4317 return nullptr; 4318 } 4319 4320 if(index == GL_INVALID_INDEX) 4321 { 4322 static GLubyte* extensionsCat = nullptr; 4323 if(!extensionsCat && (numExtensions > 0)) 4324 { 4325 size_t totalLength = numExtensions; // 1 space between each extension name + terminating null 4326 for(unsigned int i = 0; i < numExtensions; i++) 4327 { 4328 totalLength += strlen(reinterpret_cast<const char*>(extensions[i])); 4329 } 4330 extensionsCat = new GLubyte[totalLength]; 4331 extensionsCat[0] = '\0'; 4332 for(unsigned int i = 0; i < numExtensions; i++) 4333 { 4334 if(i != 0) 4335 { 4336 strcat(reinterpret_cast<char*>(extensionsCat), " "); 4337 } 4338 strcat(reinterpret_cast<char*>(extensionsCat), reinterpret_cast<const char*>(extensions[i])); 4339 } 4340 } 4341 return extensionsCat; 4342 } 4343 4344 if(index >= numExtensions) 4345 { 4346 return nullptr; 4347 } 4348 4349 return extensions[index]; 4350 } 4351 4352 } 4353 4354 egl::Context *es2CreateContext(const egl::Config *config, const egl::Context *shareContext, int clientVersion) 4355 { 4356 ASSERT(!shareContext || shareContext->getClientVersion() == clientVersion); // Should be checked by eglCreateContext 4357 return new es2::Context(config, static_cast<const es2::Context*>(shareContext), clientVersion); 4358 } 4359
