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#include "GrGpuGL.h"
#include "effects/GrConvolutionEffect.h"
#include "effects/GrGradientEffects.h"
#include "effects/GrMorphologyEffect.h"
#include "GrProgramStageFactory.h"
#include "GrRandom.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);
}
// min is inclusive, max is exclusive
int random_int(GrRandom* r, int min, int max) {
return (int)(r->nextF() * (max-min)) + min;
}
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.
GrCustomStage* create_random_effect(StageDesc* stageDesc,
GrRandom* random) {
enum EffectType {
kConvolution_EffectType,
kErode_EffectType,
kDilate_EffectType,
kRadialGradient_EffectType,
kRadial2Gradient_EffectType,
kSweepGradient_EffectType,
kEffectCount
};
// TODO: Remove this when generator doesn't apply this non-custom-stage
// notion to custom stages automatically.
static const uint32_t kMulByAlphaMask =
StageDesc::kMulRGBByAlpha_RoundUp_InConfigFlag |
StageDesc::kMulRGBByAlpha_RoundDown_InConfigFlag;
static const Gr1DKernelEffect::Direction gKernelDirections[] = {
Gr1DKernelEffect::kX_Direction,
Gr1DKernelEffect::kY_Direction
};
// TODO: When matrices are property of the custom-stage then remove the
// no-persp flag code below.
int effect = random_int(random, kEffectCount);
switch (effect) {
case kConvolution_EffectType: {
int direction = random_int(random, 2);
int kernelRadius = random_int(random, 1, 4);
float kernel[GrConvolutionEffect::kMaxKernelWidth];
for (int i = 0; i < GrConvolutionEffect::kMaxKernelWidth; i++) {
kernel[i] = random->nextF();
}
// does not work with perspective or mul-by-alpha-mask
stageDesc->fOptFlags |= StageDesc::kNoPerspective_OptFlagBit;
stageDesc->fInConfigFlags &= ~kMulByAlphaMask;
return new GrConvolutionEffect(gKernelDirections[direction],
kernelRadius,
kernel);
}
case kErode_EffectType: {
int direction = random_int(random, 2);
int kernelRadius = random_int(random, 1, 4);
// does not work with perspective or mul-by-alpha-mask
stageDesc->fOptFlags |= StageDesc::kNoPerspective_OptFlagBit;
stageDesc->fInConfigFlags &= ~kMulByAlphaMask;
return new GrMorphologyEffect(gKernelDirections[direction],
kernelRadius,
GrContext::kErode_MorphologyType);
}
case kDilate_EffectType: {
int direction = random_int(random, 2);
int kernelRadius = random_int(random, 1, 4);
// does not work with perspective or mul-by-alpha-mask
stageDesc->fOptFlags |= StageDesc::kNoPerspective_OptFlagBit;
stageDesc->fInConfigFlags &= ~kMulByAlphaMask;
return new GrMorphologyEffect(gKernelDirections[direction],
kernelRadius,
GrContext::kDilate_MorphologyType);
}
case kRadialGradient_EffectType: {
return new GrRadialGradient();
}
case kRadial2Gradient_EffectType: {
float center;
do {
center = random->nextF();
} while (GR_Scalar1 == center);
float radius = random->nextF();
bool root = random_bool(random);
return new GrRadial2Gradient(center, radius, root);
}
case kSweepGradient_EffectType: {
return new GrSweepGradient();
}
default:
GrCrash("Unexpected custom effect type");
}
return NULL;
}
}
bool GrGpuGL::programUnitTest() {
GrGLSLGeneration glslGeneration =
GrGetGLSLGeneration(this->glBinding(), this->glInterface());
static const int STAGE_OPTS[] = {
0,
StageDesc::kNoPerspective_OptFlagBit,
};
static const int IN_CONFIG_FLAGS[] = {
StageDesc::kNone_InConfigFlag,
StageDesc::kSwapRAndB_InConfigFlag,
StageDesc::kSwapRAndB_InConfigFlag |
StageDesc::kMulRGBByAlpha_RoundUp_InConfigFlag,
StageDesc::kMulRGBByAlpha_RoundDown_InConfigFlag,
StageDesc::kSmearAlpha_InConfigFlag,
StageDesc::kSmearRed_InConfigFlag,
};
GrGLProgram program;
ProgramDesc& pdesc = program.fProgramDesc;
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
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().fGeometryShaderSupport &&
random_bool(&random);
#endif
pdesc.fOutputConfig = random_int(&random, ProgramDesc::kOutputConfigCnt);
bool edgeAA = random_bool(&random);
if (edgeAA) {
pdesc.fVertexLayout |= GrDrawTarget::kEdge_VertexLayoutBit;
if (this->getCaps().fShaderDerivativeSupport) {
pdesc.fVertexEdgeType = (GrDrawState::VertexEdgeType) random_int(&random, GrDrawState::kVertexEdgeTypeCnt);
} else {
pdesc.fVertexEdgeType = GrDrawState::kHairLine_EdgeType;
}
} else {
}
pdesc.fColorMatrixEnabled = random_bool(&random);
if (this->getCaps().fDualSourceBlendingSupport) {
pdesc.fDualSrcOutput = random_int(&random, ProgramDesc::kDualSrcOutputCnt);
} else {
pdesc.fDualSrcOutput = ProgramDesc::kNone_DualSrcOutput;
}
SkAutoTUnref<GrCustomStage> customStages[GrDrawState::kNumStages];
for (int s = 0; s < GrDrawState::kNumStages; ++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);
} else {
pdesc.fVertexLayout |= StagePosAsTexCoordVertexLayoutBit(s);
}
}
// use text-formatted verts?
if (random_bool(&random)) {
pdesc.fVertexLayout |= kTextFormat_VertexLayoutBit;
}
StageDesc& stage = pdesc.fStages[s];
stage.fCustomStageKey = 0;
stage.fOptFlags = STAGE_OPTS[random_int(&random, GR_ARRAY_COUNT(STAGE_OPTS))];
stage.fInConfigFlags = IN_CONFIG_FLAGS[random_int(&random, GR_ARRAY_COUNT(IN_CONFIG_FLAGS))];
stage.setEnabled(VertexUsesStage(s, pdesc.fVertexLayout));
static const uint32_t kMulByAlphaMask =
StageDesc::kMulRGBByAlpha_RoundUp_InConfigFlag |
StageDesc::kMulRGBByAlpha_RoundDown_InConfigFlag;
bool useCustomEffect = random_bool(&random);
if (useCustomEffect) {
customStages[s].reset(create_random_effect(&stage, &random));
if (NULL != customStages[s]) {
stage.fCustomStageKey =
customStages[s]->getFactory().glStageKey(*customStages[s]);
}
}
}
CachedData cachedData;
GR_STATIC_ASSERT(sizeof(customStages) ==
GrDrawState::kNumStages * sizeof(GrCustomStage*));
GrCustomStage** stages = reinterpret_cast<GrCustomStage**>(&customStages);
if (!program.genProgram(this->glContextInfo(), stages, &cachedData)) {
return false;
}
DeleteProgram(this->glInterface(), &cachedData);
}
return true;
}
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