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/*
* 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 "gl/GrGpuGL.h"
#include "GrBackendEffectFactory.h"
#include "GrContextFactory.h"
#include "GrDrawEffect.h"
#include "effects/GrConfigConversionEffect.h"
#include "SkRandom.h"
#include "Test.h"
void GrGLProgramDesc::setRandom(SkMWCRandom* random,
const GrGpuGL* gpu,
const GrTexture* dstTexture,
const GrEffectStage* stages[GrDrawState::kNumStages],
int currAttribIndex) {
fEmitsPointSize = random->nextBool();
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 {
fColorInput = random->nextULessThan(kColorInputCnt);
} while (GrDrawState::kMaxVertexAttribCnt <= currAttribIndex &&
kAttribute_ColorInput == fColorInput);
fColorAttributeIndex = (fColorInput == kAttribute_ColorInput) ? currAttribIndex++ : -1;
do {
fCoverageInput = random->nextULessThan(kColorInputCnt);
} while (GrDrawState::kMaxVertexAttribCnt <= currAttribIndex &&
kAttribute_ColorInput == fCoverageInput);
fCoverageAttributeIndex = (fCoverageInput == kAttribute_ColorInput) ? currAttribIndex++ : -1;
fColorFilterXfermode = random->nextULessThan(SkXfermode::kLastCoeffMode + 1);
fFirstCoverageStage = random->nextULessThan(GrDrawState::kNumStages);
#if GR_GL_EXPERIMENTAL_GS
fExperimentalGS = gpu->caps()->geometryShaderSupport() && random->nextBool();
#endif
fDiscardIfZeroCoverage = random->nextBool();
bool useLocalCoords = random->nextBool() && currAttribIndex < GrDrawState::kMaxVertexAttribCnt;
fLocalCoordAttributeIndex = useLocalCoords ? currAttribIndex++ : -1;
bool dstRead = false;
for (int s = 0; s < GrDrawState::kNumStages; ++s) {
if (NULL != stages[s]) {
const GrBackendEffectFactory& factory = (*stages[s]->getEffect())->getFactory();
GrDrawEffect drawEffect(*stages[s], useLocalCoords);
fEffectKeys[s] = factory.glEffectKey(drawEffect, gpu->glCaps());
if ((*stages[s]->getEffect())->willReadDst()) {
dstRead = true;
}
}
}
if (dstRead) {
this->fDstRead = GrGLShaderBuilder::KeyForDstRead(dstTexture, gpu->glCaps());
}
CoverageOutput coverageOutput;
bool illegalCoverageOutput;
do {
coverageOutput = static_cast<CoverageOutput>(random->nextULessThan(kCoverageOutputCnt));
illegalCoverageOutput = (!gpu->caps()->dualSourceBlendingSupport() &&
CoverageOutputUsesSecondaryOutput(coverageOutput)) ||
(!dstRead && kCombineWithDst_CoverageOutput == coverageOutput);
} while (illegalCoverageOutput);
fCoverageOutput = coverageOutput;
}
bool GrGpuGL::programUnitTest(int maxStages) {
maxStages = GrMin(maxStages, (int)GrDrawState::kNumStages);
GrTextureDesc dummyDesc;
dummyDesc.fConfig = kSkia8888_GrPixelConfig;
dummyDesc.fWidth = 34;
dummyDesc.fHeight = 18;
SkAutoTUnref<GrTexture> dummyTexture1(this->createTexture(dummyDesc, NULL, 0));
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;
SkMWCRandom 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;
const GrEffectStage* stages[GrDrawState::kNumStages];
memset(stages, 0, sizeof(stages));
int currAttribIndex = 1; // we need to always leave room for position
int attribIndices[2];
GrTexture* dummyTextures[] = {dummyTexture1.get(), dummyTexture2.get()};
for (int s = 0; s < maxStages; ++s) {
// enable the stage?
if (random.nextBool()) {
SkAutoTUnref<const GrEffectRef> effect(GrEffectTestFactory::CreateStage(
&random,
this->getContext(),
*this->caps(),
dummyTextures));
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) {
--s;
continue;
}
for (int i = 0; i < numAttribs; ++i) {
attribIndices[i] = currAttribIndex++;
}
GrEffectStage* stage = SkNEW(GrEffectStage);
stage->setEffect(effect.get(), attribIndices[0], attribIndices[1]);
stages[s] = stage;
}
}
const GrTexture* dstTexture = random.nextBool() ? dummyTextures[0] : dummyTextures[1];
pdesc.setRandom(&random, this, dstTexture, stages, currAttribIndex);
SkAutoTUnref<GrGLProgram> program(GrGLProgram::Create(this->glContext(),
pdesc,
stages));
for (int s = 0; s < maxStages; ++s) {
SkDELETE(stages[s]);
}
if (NULL == program.get()) {
return false;
}
}
return true;
}
static void GLProgramsTest(skiatest::Reporter* reporter, GrContextFactory* 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 = GrDrawState::kNumStages;
#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));
}
}
}
#include "TestClassDef.h"
DEFINE_GPUTESTCLASS("GLPrograms", GLProgramsTestClass, GLProgramsTest)
// 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 "SkLightingImageFilter.h"
#include "SkMagnifierImageFilter.h"
#include "SkColorMatrixFilter.h"
void forceLinking();
void forceLinking() {
SkLightingImageFilter::CreateDistantLitDiffuse(SkPoint3(0,0,0), 0, 0, 0);
SkMagnifierImageFilter mag(SkRect::MakeWH(SK_Scalar1, SK_Scalar1), SK_Scalar1);
GrConfigConversionEffect::Create(NULL,
false,
GrConfigConversionEffect::kNone_PMConversion,
SkMatrix::I());
SkScalar matrix[20];
SkColorMatrixFilter cmf(matrix);
}
#endif
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