tests/GLProgramsTest.cpp - skia - Git at Google


 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */

 // This is a GPU-backend specific test. It relies on static intializers to work

 #include "SkTypes.h"

 #if SK_SUPPORT_GPU && SK_ALLOW_STATIC_GLOBAL_INITIALIZERS

 #include "GrBackendEffectFactory.h"
 #include "GrContextFactory.h"
 #include "GrDrawEffect.h"
 #include "effects/GrConfigConversionEffect.h"
 #include "gl/GrGpuGL.h"

 #include "SkChecksum.h"
 #include "SkRandom.h"
 #include "Test.h"

 void GrGLProgramDesc::setRandom(SkRandom* random,
                                 const GrGpuGL* gpu,
                                 const GrRenderTarget* dstRenderTarget,
                                 const GrTexture* dstCopyTexture,
                                 const GrEffectStage* stages[],
                                 int numColorStages,
                                 int numCoverageStages,
                                 int currAttribIndex) {
     int numEffects = numColorStages + numCoverageStages;
     size_t keyLength = KeyLength(numEffects);
     fKey.reset(keyLength);
     *this->atOffset<uint32_t, kLengthOffset>() = static_cast<uint32_t>(keyLength);
     memset(this->header(), 0, kHeaderSize);

     KeyHeader* header = this->header();
     header->fEmitsPointSize = random->nextBool();

     header->fPositionAttributeIndex = 0;

     // if the effects have used up all off the available attributes,
     // don't try to use color or coverage attributes as input
     do {
         header->fColorInput = static_cast<GrGLProgramDesc::ColorInput>(
                                   random->nextULessThan(kColorInputCnt));
     } while (GrDrawState::kMaxVertexAttribCnt <= currAttribIndex &&
              kAttribute_ColorInput == header->fColorInput);
     header->fColorAttributeIndex = (header->fColorInput == kAttribute_ColorInput) ?
                                         currAttribIndex++ :
                                         -1;

     do {
         header->fCoverageInput = static_cast<GrGLProgramDesc::ColorInput>(
                                      random->nextULessThan(kColorInputCnt));
     } while (GrDrawState::kMaxVertexAttribCnt <= currAttribIndex  &&
              kAttribute_ColorInput == header->fCoverageInput);
     header->fCoverageAttributeIndex = (header->fCoverageInput == kAttribute_ColorInput) ?
                                         currAttribIndex++ :
                                         -1;

 #if GR_GL_EXPERIMENTAL_GS
     header->fExperimentalGS = gpu->caps()->geometryShaderSupport() && random->nextBool();
 #endif

     bool useLocalCoords = random->nextBool() && currAttribIndex < GrDrawState::kMaxVertexAttribCnt;
     header->fLocalCoordAttributeIndex = useLocalCoords ? currAttribIndex++ : -1;

     header->fColorEffectCnt = numColorStages;
     header->fCoverageEffectCnt = numCoverageStages;

     bool dstRead = false;
     bool fragPos = false;
     bool vertexCode = false;
     int numStages = numColorStages + numCoverageStages;
     for (int s = 0; s < numStages; ++s) {
         const GrBackendEffectFactory& factory = (*stages[s]->getEffect())->getFactory();
         GrDrawEffect drawEffect(*stages[s], useLocalCoords);
         this->effectKeys()[s] = factory.glEffectKey(drawEffect, gpu->glCaps());
         if ((*stages[s]->getEffect())->willReadDstColor()) {
             dstRead = true;
         }
         if ((*stages[s]->getEffect())->willReadFragmentPosition()) {
             fragPos = true;
         }
         if ((*stages[s]->getEffect())->hasVertexCode()) {
             vertexCode = true;
         }
     }

     if (dstRead) {
         header->fDstReadKey = GrGLShaderBuilder::KeyForDstRead(dstCopyTexture, gpu->glCaps());
     } else {
         header->fDstReadKey = 0;
     }
     if (fragPos) {
         header->fFragPosKey = GrGLShaderBuilder::KeyForFragmentPosition(dstRenderTarget,
                                                                          gpu->glCaps());
     } else {
         header->fFragPosKey = 0;
     }

     header->fHasVertexCode = vertexCode ||
                              useLocalCoords ||
                              kAttribute_ColorInput == header->fColorInput ||
                              kAttribute_ColorInput == header->fCoverageInput;

     CoverageOutput coverageOutput;
     bool illegalCoverageOutput;
     do {
         coverageOutput = static_cast<CoverageOutput>(random->nextULessThan(kCoverageOutputCnt));
         illegalCoverageOutput = (!gpu->caps()->dualSourceBlendingSupport() &&
                                  CoverageOutputUsesSecondaryOutput(coverageOutput)) ||
                                 (!dstRead && kCombineWithDst_CoverageOutput == coverageOutput);
     } while (illegalCoverageOutput);

     header->fCoverageOutput = coverageOutput;

     *this->checksum() = 0;
     *this->checksum() = SkChecksum::Compute(reinterpret_cast<uint32_t*>(fKey.get()), keyLength);
     fInitialized = true;
 }

 bool GrGpuGL::programUnitTest(int maxStages) {

     GrTextureDesc dummyDesc;
     dummyDesc.fFlags = kRenderTarget_GrTextureFlagBit;
     dummyDesc.fConfig = kSkia8888_GrPixelConfig;
     dummyDesc.fWidth = 34;
     dummyDesc.fHeight = 18;
     SkAutoTUnref<GrTexture> dummyTexture1(this->createTexture(dummyDesc, NULL, 0));
     dummyDesc.fFlags = kNone_GrTextureFlags;
     dummyDesc.fConfig = kAlpha_8_GrPixelConfig;
     dummyDesc.fWidth = 16;
     dummyDesc.fHeight = 22;
     SkAutoTUnref<GrTexture> dummyTexture2(this->createTexture(dummyDesc, NULL, 0));

     static const int NUM_TESTS = 512;

     SkRandom random;
     for (int t = 0; t < NUM_TESTS; ++t) {

 #if 0
         GrPrintf("\nTest Program %d\n-------------\n", t);
         static const int stop = -1;
         if (t == stop) {
             int breakpointhere = 9;
         }
 #endif

         GrGLProgramDesc pdesc;

         int currAttribIndex = 1;  // we need to always leave room for position
         int currTextureCoordSet = 0;
         int attribIndices[2] = { 0, 0 };
         GrTexture* dummyTextures[] = {dummyTexture1.get(), dummyTexture2.get()};

         int numStages = random.nextULessThan(maxStages + 1);
         int numColorStages = random.nextULessThan(numStages + 1);
         int numCoverageStages = numStages - numColorStages;

         SkAutoSTMalloc<8, const GrEffectStage*> stages(numStages);

         bool useFixedFunctionTexturing = this->shouldUseFixedFunctionTexturing();

         for (int s = 0; s < numStages;) {
             SkAutoTUnref<const GrEffectRef> effect(GrEffectTestFactory::CreateStage(
                                                                             &random,
                                                                             this->getContext(),
                                                                             *this->caps(),
                                                                             dummyTextures));
             SkASSERT(effect);
             int numAttribs = (*effect)->numVertexAttribs();

             // If adding this effect would exceed the max attrib count then generate a
             // new random effect.
             if (currAttribIndex + numAttribs > GrDrawState::kMaxVertexAttribCnt) {
                 continue;
             }


             // If adding this effect would exceed the max texture coord set count then generate a
             // new random effect.
             if (useFixedFunctionTexturing && !(*effect)->hasVertexCode()) {
                 int numTransforms = (*effect)->numTransforms();
                 if (currTextureCoordSet + numTransforms > this->glCaps().maxFixedFunctionTextureCoords()) {
                     continue;
                 }
                 currTextureCoordSet += numTransforms;
             }

             useFixedFunctionTexturing = useFixedFunctionTexturing && !(*effect)->hasVertexCode();

             for (int i = 0; i < numAttribs; ++i) {
                 attribIndices[i] = currAttribIndex++;
             }
             GrEffectStage* stage = SkNEW_ARGS(GrEffectStage,
                                               (effect.get(), attribIndices[0], attribIndices[1]));
             stages[s] = stage;
             ++s;
         }
         const GrTexture* dstTexture = random.nextBool() ? dummyTextures[0] : dummyTextures[1];
         pdesc.setRandom(&random,
                         this,
                         dummyTextures[0]->asRenderTarget(),
                         dstTexture,
                         stages.get(),
                         numColorStages,
                         numCoverageStages,
                         currAttribIndex);

         SkAutoTUnref<GrGLProgram> program(GrGLProgram::Create(this,
                                                               pdesc,
                                                               stages,
                                                               stages + numColorStages));
         for (int s = 0; s < numStages; ++s) {
             SkDELETE(stages[s]);
         }
         if (NULL == program.get()) {
             return false;
         }
     }
     return true;
 }

 DEF_GPUTEST(GLPrograms, reporter, factory) {
     for (int type = 0; type < GrContextFactory::kLastGLContextType; ++type) {
         GrContext* context = factory->get(static_cast<GrContextFactory::GLContextType>(type));
         if (NULL != context) {
             GrGpuGL* gpu = static_cast<GrGpuGL*>(context->getGpu());
             int maxStages = 6;
 #if SK_ANGLE
             // Some long shaders run out of temporary registers in the D3D compiler on ANGLE.
             if (type == GrContextFactory::kANGLE_GLContextType) {
                 maxStages = 3;
             }
 #endif
             REPORTER_ASSERT(reporter, gpu->programUnitTest(maxStages));
         }
     }
 }

 // This is evil evil evil. The linker may throw away whole translation units as dead code if it
 // thinks none of the functions are called. It will do this even if there are static initializers
 // in the unit that could pass pointers to functions from the unit out to other translation units!
 // We force some of the effects that would otherwise be discarded to link here.

 #include "SkAlphaThresholdFilter.h"
 #include "SkColorMatrixFilter.h"
 #include "SkLightingImageFilter.h"
 #include "SkMagnifierImageFilter.h"

 void forceLinking();

 void forceLinking() {
     SkLightingImageFilter::CreateDistantLitDiffuse(SkPoint3(0,0,0), 0, 0, 0);
     SkAlphaThresholdFilter::Create(SkRegion(), .5f, .5f);
     SkAutoTUnref<SkMagnifierImageFilter> mag(SkMagnifierImageFilter::Create(
         SkRect::MakeWH(SK_Scalar1, SK_Scalar1), SK_Scalar1));
     GrConfigConversionEffect::Create(NULL,
                                      false,
                                      GrConfigConversionEffect::kNone_PMConversion,
                                      SkMatrix::I());
     SkScalar matrix[20];
     SkAutoTUnref<SkColorMatrixFilter> cmf(SkColorMatrixFilter::Create(matrix));
 }

 #endif

	/*
	* Copyright 2011 Google Inc.
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file.
	*/

	// This is a GPU-backend specific test. It relies on static intializers to work

	#include "SkTypes.h"

	#if SK_SUPPORT_GPU && SK_ALLOW_STATIC_GLOBAL_INITIALIZERS

	#include "GrBackendEffectFactory.h"
	#include "GrContextFactory.h"
	#include "GrDrawEffect.h"
	#include "effects/GrConfigConversionEffect.h"
	#include "gl/GrGpuGL.h"

	#include "SkChecksum.h"
	#include "SkRandom.h"
	#include "Test.h"

	void GrGLProgramDesc::setRandom(SkRandom* random,
	const GrGpuGL* gpu,
	const GrRenderTarget* dstRenderTarget,
	const GrTexture* dstCopyTexture,
	const GrEffectStage* stages[],
	int numColorStages,
	int numCoverageStages,
	int currAttribIndex) {
	int numEffects = numColorStages + numCoverageStages;
	size_t keyLength = KeyLength(numEffects);
	fKey.reset(keyLength);
	*this->atOffset<uint32_t, kLengthOffset>() = static_cast<uint32_t>(keyLength);
	memset(this->header(), 0, kHeaderSize);

	KeyHeader* header = this->header();
	header->fEmitsPointSize = random->nextBool();

	header->fPositionAttributeIndex = 0;

	// if the effects have used up all off the available attributes,
	// don't try to use color or coverage attributes as input
	do {
	header->fColorInput = static_cast<GrGLProgramDesc::ColorInput>(
	random->nextULessThan(kColorInputCnt));
	} while (GrDrawState::kMaxVertexAttribCnt <= currAttribIndex &&
	kAttribute_ColorInput == header->fColorInput);
	header->fColorAttributeIndex = (header->fColorInput == kAttribute_ColorInput) ?
	currAttribIndex++ :
	-1;

	do {
	header->fCoverageInput = static_cast<GrGLProgramDesc::ColorInput>(
	random->nextULessThan(kColorInputCnt));
	} while (GrDrawState::kMaxVertexAttribCnt <= currAttribIndex &&
	kAttribute_ColorInput == header->fCoverageInput);
	header->fCoverageAttributeIndex = (header->fCoverageInput == kAttribute_ColorInput) ?
	currAttribIndex++ :
	-1;

	#if GR_GL_EXPERIMENTAL_GS
	header->fExperimentalGS = gpu->caps()->geometryShaderSupport() && random->nextBool();
	#endif

	bool useLocalCoords = random->nextBool() && currAttribIndex < GrDrawState::kMaxVertexAttribCnt;
	header->fLocalCoordAttributeIndex = useLocalCoords ? currAttribIndex++ : -1;

	header->fColorEffectCnt = numColorStages;
	header->fCoverageEffectCnt = numCoverageStages;

	bool dstRead = false;
	bool fragPos = false;
	bool vertexCode = false;
	int numStages = numColorStages + numCoverageStages;
	for (int s = 0; s < numStages; ++s) {
	const GrBackendEffectFactory& factory = (*stages[s]->getEffect())->getFactory();
	GrDrawEffect drawEffect(*stages[s], useLocalCoords);
	this->effectKeys()[s] = factory.glEffectKey(drawEffect, gpu->glCaps());
	if ((*stages[s]->getEffect())->willReadDstColor()) {
	dstRead = true;
	}
	if ((*stages[s]->getEffect())->willReadFragmentPosition()) {
	fragPos = true;
	}
	if ((*stages[s]->getEffect())->hasVertexCode()) {
	vertexCode = true;
	}
	}

	if (dstRead) {
	header->fDstReadKey = GrGLShaderBuilder::KeyForDstRead(dstCopyTexture, gpu->glCaps());
	} else {
	header->fDstReadKey = 0;
	}
	if (fragPos) {
	header->fFragPosKey = GrGLShaderBuilder::KeyForFragmentPosition(dstRenderTarget,
	gpu->glCaps());
	} else {
	header->fFragPosKey = 0;
	}

	header->fHasVertexCode = vertexCode \|\|
	useLocalCoords \|\|
	kAttribute_ColorInput == header->fColorInput \|\|
	kAttribute_ColorInput == header->fCoverageInput;

	CoverageOutput coverageOutput;
	bool illegalCoverageOutput;
	do {
	coverageOutput = static_cast<CoverageOutput>(random->nextULessThan(kCoverageOutputCnt));
	illegalCoverageOutput = (!gpu->caps()->dualSourceBlendingSupport() &&
	CoverageOutputUsesSecondaryOutput(coverageOutput)) \|\|
	(!dstRead && kCombineWithDst_CoverageOutput == coverageOutput);
	} while (illegalCoverageOutput);

	header->fCoverageOutput = coverageOutput;

	*this->checksum() = 0;
	this->checksum() = SkChecksum::Compute(reinterpret_cast<uint32_t>(fKey.get()), keyLength);
	fInitialized = true;
	}

	bool GrGpuGL::programUnitTest(int maxStages) {

	GrTextureDesc dummyDesc;
	dummyDesc.fFlags = kRenderTarget_GrTextureFlagBit;
	dummyDesc.fConfig = kSkia8888_GrPixelConfig;
	dummyDesc.fWidth = 34;
	dummyDesc.fHeight = 18;
	SkAutoTUnref<GrTexture> dummyTexture1(this->createTexture(dummyDesc, NULL, 0));
	dummyDesc.fFlags = kNone_GrTextureFlags;
	dummyDesc.fConfig = kAlpha_8_GrPixelConfig;
	dummyDesc.fWidth = 16;
	dummyDesc.fHeight = 22;
	SkAutoTUnref<GrTexture> dummyTexture2(this->createTexture(dummyDesc, NULL, 0));

	static const int NUM_TESTS = 512;

	SkRandom random;
	for (int t = 0; t < NUM_TESTS; ++t) {

	#if 0
	GrPrintf("\nTest Program %d\n-------------\n", t);
	static const int stop = -1;
	if (t == stop) {
	int breakpointhere = 9;
	}
	#endif

	GrGLProgramDesc pdesc;

	int currAttribIndex = 1; // we need to always leave room for position
	int currTextureCoordSet = 0;
	int attribIndices[2] = { 0, 0 };
	GrTexture* dummyTextures[] = {dummyTexture1.get(), dummyTexture2.get()};

	int numStages = random.nextULessThan(maxStages + 1);
	int numColorStages = random.nextULessThan(numStages + 1);
	int numCoverageStages = numStages - numColorStages;

	SkAutoSTMalloc<8, const GrEffectStage*> stages(numStages);

	bool useFixedFunctionTexturing = this->shouldUseFixedFunctionTexturing();

	for (int s = 0; s < numStages;) {
	SkAutoTUnref<const GrEffectRef> effect(GrEffectTestFactory::CreateStage(
	&random,
	this->getContext(),
	*this->caps(),
	dummyTextures));
	SkASSERT(effect);
	int numAttribs = (*effect)->numVertexAttribs();

	// If adding this effect would exceed the max attrib count then generate a
	// new random effect.
	if (currAttribIndex + numAttribs > GrDrawState::kMaxVertexAttribCnt) {
	continue;
	}


	// If adding this effect would exceed the max texture coord set count then generate a
	// new random effect.
	if (useFixedFunctionTexturing && !(*effect)->hasVertexCode()) {
	int numTransforms = (*effect)->numTransforms();
	if (currTextureCoordSet + numTransforms > this->glCaps().maxFixedFunctionTextureCoords()) {
	continue;
	}
	currTextureCoordSet += numTransforms;
	}

	useFixedFunctionTexturing = useFixedFunctionTexturing && !(*effect)->hasVertexCode();

	for (int i = 0; i < numAttribs; ++i) {
	attribIndices[i] = currAttribIndex++;
	}
	GrEffectStage* stage = SkNEW_ARGS(GrEffectStage,
	(effect.get(), attribIndices[0], attribIndices[1]));
	stages[s] = stage;
	++s;
	}
	const GrTexture* dstTexture = random.nextBool() ? dummyTextures[0] : dummyTextures[1];
	pdesc.setRandom(&random,
	this,
	dummyTextures[0]->asRenderTarget(),
	dstTexture,
	stages.get(),
	numColorStages,
	numCoverageStages,
	currAttribIndex);

	SkAutoTUnref<GrGLProgram> program(GrGLProgram::Create(this,
	pdesc,
	stages,
	stages + numColorStages));
	for (int s = 0; s < numStages; ++s) {
	SkDELETE(stages[s]);
	}
	if (NULL == program.get()) {
	return false;
	}
	}
	return true;
	}

	DEF_GPUTEST(GLPrograms, reporter, factory) {
	for (int type = 0; type < GrContextFactory::kLastGLContextType; ++type) {
	GrContext* context = factory->get(static_cast<GrContextFactory::GLContextType>(type));
	if (NULL != context) {
	GrGpuGL* gpu = static_cast<GrGpuGL*>(context->getGpu());
	int maxStages = 6;
	#if SK_ANGLE
	// Some long shaders run out of temporary registers in the D3D compiler on ANGLE.
	if (type == GrContextFactory::kANGLE_GLContextType) {
	maxStages = 3;
	}
	#endif
	REPORTER_ASSERT(reporter, gpu->programUnitTest(maxStages));
	}
	}
	}

	// This is evil evil evil. The linker may throw away whole translation units as dead code if it
	// thinks none of the functions are called. It will do this even if there are static initializers
	// in the unit that could pass pointers to functions from the unit out to other translation units!
	// We force some of the effects that would otherwise be discarded to link here.

	#include "SkAlphaThresholdFilter.h"
	#include "SkColorMatrixFilter.h"
	#include "SkLightingImageFilter.h"
	#include "SkMagnifierImageFilter.h"

	void forceLinking();

	void forceLinking() {
	SkLightingImageFilter::CreateDistantLitDiffuse(SkPoint3(0,0,0), 0, 0, 0);
	SkAlphaThresholdFilter::Create(SkRegion(), .5f, .5f);
	SkAutoTUnref<SkMagnifierImageFilter> mag(SkMagnifierImageFilter::Create(
	SkRect::MakeWH(SK_Scalar1, SK_Scalar1), SK_Scalar1));
	GrConfigConversionEffect::Create(NULL,
	false,
	GrConfigConversionEffect::kNone_PMConversion,
	SkMatrix::I());
	SkScalar matrix[20];
	SkAutoTUnref<SkColorMatrixFilter> cmf(SkColorMatrixFilter::Create(matrix));
	}

	#endif