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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 "effects/GrConfigConversionEffect.h"
#include "SkRandom.h"
#include "Test.h"
namespace {
// SkRandoms nextU() values have patterns in the low bits
// So using nextU() % array_count might never take some values.
int random_int(SkRandom* r, int count) {
return (int)(r->nextF() * count);
}
bool random_bool(SkRandom* r) {
return r->nextF() > .5f;
}
const GrEffectRef* create_random_effect(SkRandom* random,
GrContext* context,
GrTexture* dummyTextures[]) {
SkRandom sk_random;
sk_random.setSeed(random->nextU());
GrEffectRef* effect = GrEffectTestFactory::CreateStage(&sk_random, context, dummyTextures);
GrAssert(effect);
return effect;
}
}
bool GrGpuGL::programUnitTest(int maxStages) {
maxStages = GrMin(maxStages, (int)GrDrawState::kNumStages);
GrTextureDesc dummyDesc;
dummyDesc.fConfig = kSkia8888_PM_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;
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
ProgramDesc pdesc;
pdesc.fVertexLayout = 0;
pdesc.fEmitsPointSize = random.nextF() > .5f;
pdesc.fColorInput = random_int(&random, ProgramDesc::kColorInputCnt);
pdesc.fCoverageInput = random_int(&random, ProgramDesc::kColorInputCnt);
pdesc.fColorFilterXfermode = random_int(&random, SkXfermode::kCoeffModesCnt);
pdesc.fFirstCoverageStage = random_int(&random, GrDrawState::kNumStages);
pdesc.fVertexLayout |= random_bool(&random) ?
GrDrawState::kCoverage_VertexLayoutBit :
0;
#if GR_GL_EXPERIMENTAL_GS
pdesc.fExperimentalGS = this->getCaps().geometryShaderSupport() &&
random_bool(&random);
#endif
bool edgeAA = random_bool(&random);
if (edgeAA) {
pdesc.fVertexLayout |= GrDrawState::kEdge_VertexLayoutBit;
if (this->getCaps().shaderDerivativeSupport()) {
pdesc.fVertexEdgeType = (GrDrawState::VertexEdgeType) random_int(&random, GrDrawState::kVertexEdgeTypeCnt);
pdesc.fDiscardIfOutsideEdge = random.nextBool();
} else {
pdesc.fVertexEdgeType = GrDrawState::kHairLine_EdgeType;
pdesc.fDiscardIfOutsideEdge = false;
}
} else {
}
if (this->getCaps().dualSourceBlendingSupport()) {
pdesc.fDualSrcOutput = random_int(&random, ProgramDesc::kDualSrcOutputCnt);
} else {
pdesc.fDualSrcOutput = ProgramDesc::kNone_DualSrcOutput;
}
GrEffectStage stages[GrDrawState::kNumStages];
for (int s = 0; s < maxStages; ++s) {
// enable the stage?
if (random_bool(&random)) {
// use separate tex coords?
if (random_bool(&random)) {
int t = random_int(&random, GrDrawState::kMaxTexCoords);
pdesc.fVertexLayout |= GrDrawState::StageTexCoordVertexLayoutBit(s, t);
}
// use text-formatted verts?
if (random_bool(&random)) {
pdesc.fVertexLayout |= GrDrawState::kTextFormat_VertexLayoutBit;
}
GrTexture* dummyTextures[] = {dummyTexture1.get(), dummyTexture2.get()};
SkAutoTUnref<const GrEffectRef> effect(create_random_effect(&random,
getContext(),
dummyTextures));
stages[s].setEffect(effect.get());
if (NULL != stages[s].getEffect()) {
pdesc.fEffectKeys[s] =
(*stages[s].getEffect())->getFactory().glEffectKey(stages[s],
this->glCaps());
}
}
}
const GrEffectStage* stagePtrs[GrDrawState::kNumStages];
for (int s = 0; s < GrDrawState::kNumStages; ++s) {
stagePtrs[s] = &stages[s];
}
SkAutoTUnref<GrGLProgram> program(GrGLProgram::Create(this->glContextInfo(),
pdesc,
stagePtrs));
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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