diff options
Diffstat (limited to 'tools/debugger/SkOverdrawMode.cpp')
| -rw-r--r-- | tools/debugger/SkOverdrawMode.cpp | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/tools/debugger/SkOverdrawMode.cpp b/tools/debugger/SkOverdrawMode.cpp new file mode 100644 index 0000000000..3b695eca26 --- /dev/null +++ b/tools/debugger/SkOverdrawMode.cpp @@ -0,0 +1,324 @@ +/* + * Copyright 2016 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "SkColorPriv.h" +#include "SkOverdrawMode.h" +#include "SkString.h" +#include "SkXfermode.h" + +#if SK_SUPPORT_GPU +#include "GrFragmentProcessor.h" +#include "GrInvariantOutput.h" +#include "GrXferProcessor.h" +#include "glsl/GrGLSLFragmentProcessor.h" +#include "glsl/GrGLSLFragmentShaderBuilder.h" +#include "glsl/GrGLSLXferProcessor.h" + + /////////////////////////////////////////////////////////////////////////////// + // Fragment Processor + /////////////////////////////////////////////////////////////////////////////// + +class GLOverdrawFP; + +class GrOverdrawFP : public GrFragmentProcessor { +public: + static const GrFragmentProcessor* Create(const GrFragmentProcessor* dst) { + return new GrOverdrawFP(dst); + } + + ~GrOverdrawFP() override { } + + const char* name() const override { return "Overdraw"; } + + SkString dumpInfo() const override { + SkString str; + return str; + } + +private: + GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; + + void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder* b) const override; + + bool onIsEqual(const GrFragmentProcessor&) const override { return true; } + + void onComputeInvariantOutput(GrInvariantOutput* inout) const override { + inout->setToUnknown(GrInvariantOutput::kWill_ReadInput); + } + + GrOverdrawFP(const GrFragmentProcessor* dst) { + this->initClassID<GrOverdrawFP>(); + + SkASSERT(dst); + SkDEBUGCODE(int dstIndex = )this->registerChildProcessor(dst); + SkASSERT(0 == dstIndex); + } + + GR_DECLARE_FRAGMENT_PROCESSOR_TEST; + typedef GrFragmentProcessor INHERITED; +}; + +/////////////////////////////////////////////////////////////////////////////// + +static void add_overdraw_code(GrGLSLFragmentBuilder* fragBuilder, + const char* dstColor, + const char* outputColor) { + + static const GrGLSLShaderVar gColorTableArgs[] = { + // TODO: once kInt_GrSLType lands - switch this over + GrGLSLShaderVar("index", kFloat_GrSLType), + }; + SkString colorTableFuncName; + + // The 'colorTable' function exists to work around older GLSL's prohibition + // of initialized arrays. It takes an integer index and just returns the + // corresponding color. + fragBuilder->emitFunction(kVec4f_GrSLType, + "colorTable", + SK_ARRAY_COUNT(gColorTableArgs), + gColorTableArgs, + "if (index < 1.5) { return vec4(0.5, 0.617, 1.0, 1.0); }" + "if (index < 2.5) { return vec4(0.664, 0.723, 0.83, 1.0); }" + "if (index < 3.5) { return vec4(0.832, 0.762, 0.664, 1.0); }" + "if (index < 4.5) { return vec4(1, 0.75, 0.496, 1.0); }" + "if (index < 5.5) { return vec4(1, 0.723, 0.332, 1.0); }" + "if (index < 6.5) { return vec4(1, 0.645, 0.164, 1.0); }" + "if (index < 7.5) { return vec4(1, 0.527, 0, 1.0); }" + "if (index < 8.5) { return vec4(1, 0.371, 0, 1.0); }" + "if (index < 9.5) { return vec4(1, 0.195, 0, 1.0); }" + "return vec4(1, 0, 0, 1.0);", + &colorTableFuncName); + + fragBuilder->codeAppend("int nextIdx;"); + fragBuilder->codeAppendf("vec4 dst = %s;", dstColor); + fragBuilder->codeAppend("if (dst.r < 0.25) { nextIdx = 1; }"); + // cap 'idx' at 10 + fragBuilder->codeAppend("else if (dst.g < 0.0977) { nextIdx = 10; }"); + fragBuilder->codeAppend("else if (dst.b > 0.08) { nextIdx = 8 - int(6.0 * dst.b + 0.5); }"); + fragBuilder->codeAppend("else { nextIdx = 11 - int(5.7 * dst.g + 0.5); }"); + fragBuilder->codeAppendf("%s = %s(float(nextIdx));", outputColor, colorTableFuncName.c_str()); +} + +class GLOverdrawFP : public GrGLSLFragmentProcessor { +public: + void emitCode(EmitArgs& args) override { + GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder; + SkString dstColor("dstColor"); + this->emitChild(0, nullptr, &dstColor, args); + + add_overdraw_code(fragBuilder, dstColor.c_str(), args.fOutputColor); + } + + static void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuilder*) { } + +private: + typedef GrGLSLFragmentProcessor INHERITED; +}; + +/////////////////////////////////////////////////////////////////////////////// + +GrGLSLFragmentProcessor* GrOverdrawFP::onCreateGLSLInstance() const { + return new GLOverdrawFP; +} + +void GrOverdrawFP::onGetGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const { + GLOverdrawFP::GenKey(*this, caps, b); +} + +const GrFragmentProcessor* GrOverdrawFP::TestCreate(GrProcessorTestData* d) { + SkAutoTUnref<const GrFragmentProcessor> dst(GrProcessorUnitTest::CreateChildFP(d)); + return new GrOverdrawFP(dst); +} + +GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrOverdrawFP); + +/////////////////////////////////////////////////////////////////////////////// +// Xfer Processor +/////////////////////////////////////////////////////////////////////////////// + +class OverdrawXP : public GrXferProcessor { +public: + OverdrawXP(const DstTexture* dstTexture, bool hasMixedSamples) + : INHERITED(dstTexture, true, hasMixedSamples) { + this->initClassID<OverdrawXP>(); + } + + const char* name() const override { return "Overdraw"; } + + GrGLSLXferProcessor* createGLSLInstance() const override; + +private: + GrXferProcessor::OptFlags onGetOptimizations(const GrPipelineOptimizations& optimizations, + bool doesStencilWrite, + GrColor* overrideColor, + const GrCaps& caps) const override { + // We never look at the color input + return GrXferProcessor::kIgnoreColor_OptFlag; + } + + void onGetGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const override; + + bool onIsEqual(const GrXferProcessor&) const override { return true; } + + typedef GrXferProcessor INHERITED; +}; + +/////////////////////////////////////////////////////////////////////////////// + +class GLOverdrawXP : public GrGLSLXferProcessor { +public: + GLOverdrawXP(const OverdrawXP&) { } + + ~GLOverdrawXP() override {} + + static void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuilder*) { } + +private: + void emitBlendCodeForDstRead(GrGLSLXPFragmentBuilder* fragBuilder, + GrGLSLUniformHandler* uniformHandler, + const char* srcColor, + const char* srcCoverage, + const char* dstColor, + const char* outColor, + const char* outColorSecondary, + const GrXferProcessor& proc) override { + add_overdraw_code(fragBuilder, dstColor, outColor); + + // Apply coverage. + INHERITED::DefaultCoverageModulation(fragBuilder, srcCoverage, dstColor, outColor, + outColorSecondary, proc); + } + + void onSetData(const GrGLSLProgramDataManager&, const GrXferProcessor&) override { }; + + typedef GrGLSLXferProcessor INHERITED; +}; + +/////////////////////////////////////////////////////////////////////////////// + +void OverdrawXP::onGetGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const { + GLOverdrawXP::GenKey(*this, caps, b); +} + +GrGLSLXferProcessor* OverdrawXP::createGLSLInstance() const { return new GLOverdrawXP(*this); } + +/////////////////////////////////////////////////////////////////////////////// +class GrOverdrawXPFactory : public GrXPFactory { +public: + static GrXPFactory* Create() { return new GrOverdrawXPFactory(); } + + void getInvariantBlendedColor(const GrProcOptInfo& colorPOI, + GrXPFactory::InvariantBlendedColor* blendedColor) const override { + blendedColor->fWillBlendWithDst = true; + blendedColor->fKnownColorFlags = kNone_GrColorComponentFlags; + } + +private: + GrOverdrawXPFactory() { + this->initClassID<GrOverdrawXPFactory>(); + } + + GrXferProcessor* onCreateXferProcessor(const GrCaps& caps, + const GrPipelineOptimizations& optimizations, + bool hasMixedSamples, + const DstTexture* dstTexture) const override { + return new OverdrawXP(dstTexture, hasMixedSamples); + } + + bool onWillReadDstColor(const GrCaps& caps, + const GrPipelineOptimizations& optimizations, + bool hasMixedSamples) const override { + return true; + } + + bool onIsEqual(const GrXPFactory& xpfBase) const override { return true; } + + GR_DECLARE_XP_FACTORY_TEST; + + typedef GrXPFactory INHERITED; +}; + +GR_DEFINE_XP_FACTORY_TEST(GrOverdrawXPFactory); + +const GrXPFactory* GrOverdrawXPFactory::TestCreate(GrProcessorTestData* d) { + return GrOverdrawXPFactory::Create(); +} +#endif + +/////////////////////////////////////////////////////////////////////////////// +class SkOverdrawXfermode : public SkXfermode { +public: + static SkXfermode* Create() { + return new SkOverdrawXfermode; + } + + SkPMColor xferColor(SkPMColor src, SkPMColor dst) const override { + // This table encodes the color progression of the overdraw visualization + static const SkPMColor gTable[] = { + SkPackARGB32(0x00, 0x00, 0x00, 0x00), + SkPackARGB32(0xFF, 128, 158, 255), + SkPackARGB32(0xFF, 170, 185, 212), + SkPackARGB32(0xFF, 213, 195, 170), + SkPackARGB32(0xFF, 255, 192, 127), + SkPackARGB32(0xFF, 255, 185, 85), + SkPackARGB32(0xFF, 255, 165, 42), + SkPackARGB32(0xFF, 255, 135, 0), + SkPackARGB32(0xFF, 255, 95, 0), + SkPackARGB32(0xFF, 255, 50, 0), + SkPackARGB32(0xFF, 255, 0, 0) + }; + + + int nextIdx; + if (SkColorGetR(dst) < 64) { // dst color is the 0th color so the next color is 1 + nextIdx = 1; + } else if (SkColorGetG(dst) < 25) { // dst color is the 10th color so cap there + nextIdx = 10; + } else if ((SkColorGetB(dst)+21)/42 > 0) { // dst color is one of 1-6 + nextIdx = 8 - (SkColorGetB(dst)+21)/42; + } else { // dst color is between 7 and 9 + nextIdx = 11 - (SkColorGetG(dst)+22)/45; + } + SkASSERT(nextIdx < (int)SK_ARRAY_COUNT(gTable)); + + return gTable[nextIdx]; + } + + SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkOverdrawXfermode) + +#if SK_SUPPORT_GPU + const GrFragmentProcessor* getFragmentProcessorForImageFilter( + const GrFragmentProcessor* dst) const override { + return GrOverdrawFP::Create(dst); + } + + GrXPFactory* asXPFactory() const override { + return GrOverdrawXPFactory::Create(); + } +#endif + +#ifndef SK_IGNORE_TO_STRING + void toString(SkString* str) const override { str->set("SkOverdrawXfermode"); } +#endif + +private: + friend class SkOverdrawMode; + + void flatten(SkWriteBuffer& buffer) const override { } + + typedef SkXfermode INHERITED; +}; + +SkFlattenable* SkOverdrawXfermode::CreateProc(SkReadBuffer& buffer) { + return Create(); +} + +SkXfermode* SkOverdrawMode::Create() { return new SkOverdrawXfermode; } + +SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkOverdrawMode) + SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkOverdrawXfermode) +SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |