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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 "GrProgramStageFactory.h"
#include "effects/GrConfigConversionEffect.h"
#include "GrRandom.h"
#include "Test.h"
namespace {
// GrRandoms nextU() values have patterns in the low bits
// So using nextU() % array_count might never take some values.
int random_int(GrRandom* r, int count) {
return (int)(r->nextF() * count);
}
bool random_bool(GrRandom* r) {
return r->nextF() > .5f;
}
typedef GrGLProgram::StageDesc StageDesc;
// TODO: Effects should be able to register themselves for inclusion in the
// randomly generated shaders. They should be able to configure themselves
// randomly.
const GrEffect* create_random_effect(StageDesc* stageDesc,
GrRandom* random,
GrContext* context,
GrTexture* dummyTextures[]) {
// The new code uses SkRandom not GrRandom.
// TODO: Remove GrRandom.
SkRandom sk_random;
sk_random.setSeed(random->nextU());
GrEffect* stage = GrEffectTestFactory::CreateStage(&sk_random, context, dummyTextures);
GrAssert(stage);
return stage;
}
}
bool GrGpuGL::programUnitTest() {
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));
// GrGLSLGeneration glslGeneration =
GrGetGLSLGeneration(this->glBinding(), this->glInterface());
static const int STAGE_OPTS[] = {
0,
StageDesc::kNoPerspective_OptFlagBit,
};
static const int NUM_TESTS = 512;
GrRandom 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) ?
GrDrawTarget::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 |= GrDrawTarget::kEdge_VertexLayoutBit;
if (this->getCaps().shaderDerivativeSupport()) {
pdesc.fVertexEdgeType = (GrDrawState::VertexEdgeType) random_int(&random, GrDrawState::kVertexEdgeTypeCnt);
} else {
pdesc.fVertexEdgeType = GrDrawState::kHairLine_EdgeType;
}
} else {
}
if (this->getCaps().dualSourceBlendingSupport()) {
pdesc.fDualSrcOutput = random_int(&random, ProgramDesc::kDualSrcOutputCnt);
} else {
pdesc.fDualSrcOutput = ProgramDesc::kNone_DualSrcOutput;
}
SkAutoTUnref<const GrEffect> effects[GrDrawState::kNumStages];
for (int s = 0; s < GrDrawState::kNumStages; ++s) {
StageDesc& stage = pdesc.fStages[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 |= StageTexCoordVertexLayoutBit(s, t);
}
stage.setEnabled(true);
}
// use text-formatted verts?
if (random_bool(&random)) {
pdesc.fVertexLayout |= kTextFormat_VertexLayoutBit;
}
stage.fCustomStageKey = 0;
stage.fOptFlags |= STAGE_OPTS[random_int(&random, GR_ARRAY_COUNT(STAGE_OPTS))];
if (stage.isEnabled()) {
GrTexture* dummyTextures[] = {dummyTexture1.get(), dummyTexture2.get()};
effects[s].reset(create_random_effect(&stage,
&random,
getContext(),
dummyTextures));
if (NULL != effects[s]) {
stage.fCustomStageKey =
effects[s]->getFactory().glStageKey(*effects[s], this->glCaps());
}
}
}
GR_STATIC_ASSERT(sizeof(effects) ==
GrDrawState::kNumStages * sizeof(GrEffect*));
const GrEffect** stages = reinterpret_cast<const GrEffect**>(&effects);
SkAutoTUnref<GrGLProgram> program(GrGLProgram::Create(this->glContextInfo(),
pdesc,
stages));
if (NULL == program.get()) {
return false;
}
}
return true;
}
static void GLProgramsTest(skiatest::Reporter* reporter, GrContext* context) {
GrGpuGL* shadersGpu = static_cast<GrGpuGL*>(context->getGpu());
REPORTER_ASSERT(reporter, shadersGpu->programUnitTest());
}
#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);
SkScalar matrix[20];
SkColorMatrixFilter cmf(matrix);
}
#endif
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