/*
* 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 "GrBackendProcessorFactory.h"
#include "GrContextFactory.h"
#include "GrOptDrawState.h"
#include "effects/GrConfigConversionEffect.h"
#include "gl/GrGLPathRendering.h"
#include "gl/GrGpuGL.h"
#include "SkChecksum.h"
#include "SkRandom.h"
#include "Test.h"
static void get_stage_stats(const GrFragmentStage stage, bool* readsDst,
bool* readsFragPosition, bool* requiresVertexShader) {
if (stage.getFragmentProcessor()->willReadDstColor()) {
*readsDst = true;
}
if (stage.getProcessor()->willReadFragmentPosition()) {
*readsFragPosition = true;
}
}
bool GrGLProgramDesc::setRandom(SkRandom* random,
GrGpuGL* gpu,
const GrRenderTarget* dstRenderTarget,
const GrTexture* dstCopyTexture,
const GrGeometryStage* geometryProcessor,
const GrFragmentStage* stages[],
int numColorStages,
int numCoverageStages,
int currAttribIndex,
GrGpu::DrawType drawType) {
bool isPathRendering = GrGpu::IsPathRenderingDrawType(drawType);
bool useLocalCoords = !isPathRendering &&
random->nextBool() &&
currAttribIndex < GrDrawState::kMaxVertexAttribCnt;
int numStages = numColorStages + numCoverageStages;
fKey.reset();
GR_STATIC_ASSERT(0 == kEffectKeyOffsetsAndLengthOffset % sizeof(uint32_t));
// Make room for everything up to and including the array of offsets to effect keys.
fKey.push_back_n(kEffectKeyOffsetsAndLengthOffset + 2 * sizeof(uint16_t) * (numStages +
(geometryProcessor ? 1 : 0)));
bool dstRead = false;
bool fragPos = false;
bool vertexShader = SkToBool(geometryProcessor);
int offset = 0;
if (geometryProcessor) {
const GrGeometryStage* stage = geometryProcessor;
uint16_t* offsetAndSize = reinterpret_cast<uint16_t*>(fKey.begin() +
kEffectKeyOffsetsAndLengthOffset +
offset * 2 * sizeof(uint16_t));
uint32_t effectKeyOffset = fKey.count();
if (effectKeyOffset > SK_MaxU16) {
fKey.reset();
return false;
}
GrProcessorKeyBuilder b(&fKey);
uint16_t effectKeySize;
if (!GetProcessorKey(*stage, gpu->glCaps(), useLocalCoords, &b, &effectKeySize)) {
fKey.reset();
return false;
}
vertexShader = true;
fragPos = stage->getProcessor()->willReadFragmentPosition();
offsetAndSize[0] = effectKeyOffset;
offsetAndSize[1] = effectKeySize;
offset++;
}
for (int s = 0; s < numStages; ++s, ++offset) {
const GrFragmentStage* stage = stages[s];
uint16_t* offsetAndSize = reinterpret_cast<uint16_t*>(fKey.begin() +
kEffectKeyOffsetsAndLengthOffset +
offset * 2 * sizeof(uint16_t));
uint32_t effectKeyOffset = fKey.count();
if (effectKeyOffset > SK_MaxU16) {
fKey.reset();
return false;
}
GrProcessorKeyBuilder b(&fKey);
uint16_t effectKeySize;
if (!GetProcessorKey(*stages[s], gpu->glCaps(), useLocalCoords, &b, &effectKeySize)) {
fKey.reset();
return false;
}
get_stage_stats(*stage, &dstRead, &fragPos, &vertexShader);
offsetAndSize[0] = effectKeyOffset;
offsetAndSize[1] = effectKeySize;
}
KeyHeader* header = this->header();
memset(header, 0, kHeaderSize);
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 || isPathRendering) &&
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 || isPathRendering) &&
kAttribute_ColorInput == header->fCoverageInput);
header->fCoverageAttributeIndex = (header->fCoverageInput == kAttribute_ColorInput) ?
currAttribIndex++ :
-1;
bool useGS = random->nextBool();
#if GR_GL_EXPERIMENTAL_GS
header->fExperimentalGS = gpu->caps()->geometryShaderSupport() && useGS;
#else
(void) useGS;
#endif
header->fLocalCoordAttributeIndex = useLocalCoords ? currAttribIndex++ : -1;
header->fColorEffectCnt = numColorStages;
header->fCoverageEffectCnt = numCoverageStages;
if (dstRead) {
header->fDstReadKey = SkToU8(GrGLFragmentShaderBuilder::KeyForDstRead(dstCopyTexture,
gpu->glCaps()));
} else {
header->fDstReadKey = 0;
}
if (fragPos) {
header->fFragPosKey = SkToU8(GrGLFragmentShaderBuilder::KeyForFragmentPosition(dstRenderTarget,
gpu->glCaps()));
} else {
header->fFragPosKey = 0;
}
header->fUseFragShaderOnly = isPathRendering && gpu->glPathRendering()->texturingMode() ==
GrGLPathRendering::FixedFunction_TexturingMode;
header->fHasGeometryProcessor = vertexShader;
GrOptDrawState::PrimaryOutputType primaryOutput;
GrOptDrawState::SecondaryOutputType secondaryOutput;
if (!dstRead) {
primaryOutput = GrOptDrawState::kModulate_PrimaryOutputType;
} else {
primaryOutput = static_cast<GrOptDrawState::PrimaryOutputType>(
random->nextULessThan(GrOptDrawState::kPrimaryOutputTypeCnt));
}
if (GrOptDrawState::kCombineWithDst_PrimaryOutputType == primaryOutput ||
!gpu->caps()->dualSourceBlendingSupport()) {
secondaryOutput = GrOptDrawState::kNone_SecondaryOutputType;
} else {
secondaryOutput = static_cast<GrOptDrawState::SecondaryOutputType>(
random->nextULessThan(GrOptDrawState::kSecondaryOutputTypeCnt));
}
header->fPrimaryOutputType = primaryOutput;
header->fSecondaryOutputType = secondaryOutput;
this->finalize();
return true;
}
// TODO clean this up, we have to do this to test geometry processors but there has got to be
// a better way. In the mean time, we actually fill out these generic vertex attribs below with
// the correct vertex attribs from the GP. We have to ensure, however, we don't try to add more
// than two attributes.
GrVertexAttrib genericVertexAttribs[] = {
{ kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBinding },
{ kVec2f_GrVertexAttribType, 0, kGeometryProcessor_GrVertexAttribBinding },
{ kVec2f_GrVertexAttribType, 0, kGeometryProcessor_GrVertexAttribBinding }
};
/*
* convert sl type to vertexattrib type, not a complete implementation, only use for debugging
*/
GrVertexAttribType convert_sltype_to_attribtype(GrSLType type) {
switch (type) {
case kFloat_GrSLType:
return kFloat_GrVertexAttribType;
case kVec2f_GrSLType:
return kVec2f_GrVertexAttribType;
case kVec3f_GrSLType:
return kVec3f_GrVertexAttribType;
case kVec4f_GrSLType:
return kVec4f_GrVertexAttribType;
default:
SkFAIL("Type isn't convertible");
return kFloat_GrVertexAttribType;
}
}
// TODO end test hack
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));
if (!dummyTexture1 || ! dummyTexture2) {
return false;
}
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;
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 GrFragmentStage*> stages(numStages);
bool usePathRendering = this->glCaps().pathRenderingSupport() && random.nextBool();
GrGpu::DrawType drawType = usePathRendering ? GrGpu::kDrawPath_DrawType :
GrGpu::kDrawPoints_DrawType;
SkAutoTDelete<GrGeometryStage> geometryProcessor;
bool hasGeometryProcessor = usePathRendering ? false : random.nextBool();
if (hasGeometryProcessor) {
while (true) {
SkAutoTUnref<const GrGeometryProcessor> effect(
GrProcessorTestFactory<GrGeometryProcessor>::CreateStage(&random, this->getContext(), *this->caps(),
dummyTextures));
SkASSERT(effect);
// Only geometryProcessor can use vertex shader
GrGeometryStage* stage = SkNEW_ARGS(GrGeometryStage, (effect.get()));
geometryProcessor.reset(stage);
// we have to set dummy vertex attribs
const GrGeometryProcessor::VertexAttribArray& v = effect->getVertexAttribs();
int numVertexAttribs = v.count();
SkASSERT(GrGeometryProcessor::kMaxVertexAttribs == 2 &&
GrGeometryProcessor::kMaxVertexAttribs >= numVertexAttribs);
size_t runningStride = GrVertexAttribTypeSize(genericVertexAttribs[0].fType);
for (int i = 0; i < numVertexAttribs; i++) {
genericVertexAttribs[i + 1].fOffset = runningStride;
genericVertexAttribs[i + 1].fType =
convert_sltype_to_attribtype(v[i].getType());
runningStride += GrVertexAttribTypeSize(genericVertexAttribs[i + 1].fType);
}
// update the vertex attributes with the ds
GrDrawState* ds = this->drawState();
ds->setVertexAttribs<genericVertexAttribs>(numVertexAttribs + 1, runningStride);
currAttribIndex = numVertexAttribs + 1;
break;
}
}
for (int s = 0; s < numStages;) {
SkAutoTUnref<const GrFragmentProcessor> effect(
GrProcessorTestFactory<GrFragmentProcessor>::CreateStage(
&random,
this->getContext(),
*this->caps(),
dummyTextures));
SkASSERT(effect);
// If adding this effect would exceed the max texture coord set count then generate a
// new random effect.
if (usePathRendering && this->glPathRendering()->texturingMode() ==
GrGLPathRendering::FixedFunction_TexturingMode) {;
int numTransforms = effect->numTransforms();
if (currTextureCoordSet + numTransforms > this->glCaps().maxFixedFunctionTextureCoords()) {
continue;
}
currTextureCoordSet += numTransforms;
}
GrFragmentStage* stage = SkNEW_ARGS(GrFragmentStage, (effect.get()));
stages[s] = stage;
++s;
}
const GrTexture* dstTexture = random.nextBool() ? dummyTextures[0] : dummyTextures[1];
if (!pdesc.setRandom(&random,
this,
dummyTextures[0]->asRenderTarget(),
dstTexture,
geometryProcessor.get(),
stages.get(),
numColorStages,
numCoverageStages,
currAttribIndex,
drawType)) {
return false;
}
SkAutoTUnref<GrGLProgram> program(GrGLProgram::Create(this,
pdesc,
geometryProcessor.get(),
stages,
stages + numColorStages));
for (int s = 0; s < numStages; ++s) {
SkDELETE(stages[s]);
}
if (NULL == program.get()) {
return false;
}
// We have to reset the drawstate because we might have added a gp
this->drawState()->reset();
}
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 (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<SkImageFilter> 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