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-rw-r--r--gm/pixelxorxfermode.cpp2
-rw-r--r--include/effects/SkPixelXorXfermode.h11
-rw-r--r--src/effects/SkPixelXorXfermode.cpp355
-rw-r--r--src/gpu/GrProcessor.cpp4
-rw-r--r--src/gpu/glsl/GrGLSLXferProcessor.cpp18
-rw-r--r--src/gpu/glsl/GrGLSLXferProcessor.h8
6 files changed, 392 insertions, 6 deletions
diff --git a/gm/pixelxorxfermode.cpp b/gm/pixelxorxfermode.cpp
index 76685706a7..35926a81c6 100644
--- a/gm/pixelxorxfermode.cpp
+++ b/gm/pixelxorxfermode.cpp
@@ -49,7 +49,7 @@ protected:
// the green & blue channels alone
SkPaint p1;
p1.setColor(SK_ColorBLACK); // noop
- p1.setXfermode(SkPixelXorXfermode::Create(SK_ColorRED))->unref();
+ p1.setXfermode(SkPixelXorXfermode::Create(0x7FFF0000))->unref();
canvas->drawRect(r, p1);
diff --git a/include/effects/SkPixelXorXfermode.h b/include/effects/SkPixelXorXfermode.h
index 568c322a5d..b6a160b581 100644
--- a/include/effects/SkPixelXorXfermode.h
+++ b/include/effects/SkPixelXorXfermode.h
@@ -17,7 +17,16 @@
*/
class SK_API SkPixelXorXfermode : public SkXfermode {
public:
- static SkXfermode* Create(SkColor opColor) { return new SkPixelXorXfermode(opColor); }
+ static SkXfermode* Create(SkColor opColor) {
+ return new SkPixelXorXfermode(opColor);
+ }
+
+#if SK_SUPPORT_GPU
+ bool asFragmentProcessor(const GrFragmentProcessor** output,
+ const GrFragmentProcessor* dst) const override;
+
+ bool asXPFactory(GrXPFactory**) const override;
+#endif
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPixelXorXfermode)
diff --git a/src/effects/SkPixelXorXfermode.cpp b/src/effects/SkPixelXorXfermode.cpp
index 8e13b2250c..5ea82e6309 100644
--- a/src/effects/SkPixelXorXfermode.cpp
+++ b/src/effects/SkPixelXorXfermode.cpp
@@ -1,4 +1,3 @@
-
/*
* Copyright 2011 Google Inc.
*
@@ -6,7 +5,6 @@
* found in the LICENSE file.
*/
-
#include "SkPixelXorXfermode.h"
#include "SkColorPriv.h"
#include "SkReadBuffer.h"
@@ -19,6 +17,7 @@
// the alpha-component and still return a valid premultiplied color.
SkPMColor SkPixelXorXfermode::xferColor(SkPMColor src, SkPMColor dst) const {
SkPMColor res = src ^ dst ^ fOpColor;
+
res |= (SK_A32_MASK << SK_A32_SHIFT); // force it to be opaque
return res;
}
@@ -38,6 +37,358 @@ void SkPixelXorXfermode::toString(SkString* str) const {
}
#endif
+#if SK_SUPPORT_GPU
+#include "GrFragmentProcessor.h"
+#include "GrInvariantOutput.h"
+#include "GrXferProcessor.h"
+
+#include "glsl/GrGLSLFragmentProcessor.h"
+#include "glsl/GrGLSLFragmentShaderBuilder.h"
+#include "glsl/GrGLSLProgramDataManager.h"
+#include "glsl/GrGLSLUniformHandler.h"
+#include "glsl/GrGLSLXferProcessor.h"
+
+///////////////////////////////////////////////////////////////////////////////
+// Fragment Processor
+///////////////////////////////////////////////////////////////////////////////
+
+static void add_pixelxor_code(GrGLSLFragmentBuilder* fragBuilder,
+ const char* srcColor,
+ const char* dstColor,
+ const char* outputColor,
+ const char* opColor) {
+ static const GrGLSLShaderVar gXorArgs[] = {
+ GrGLSLShaderVar("f1", kFloat_GrSLType),
+ GrGLSLShaderVar("f2", kFloat_GrSLType),
+ GrGLSLShaderVar("f3", kFloat_GrSLType),
+ GrGLSLShaderVar("fPowerOf2Divisor", kFloat_GrSLType),
+ };
+ SkString xorFuncName;
+
+ // The xor function checks if the three passed in floats (f1, f2, f3) would
+ // have a bit in the log2(fPowerOf2Divisor)-th position if they were
+ // represented by an int. It then performs an xor of the 3 bits (using
+ // the property that serial xors can be treated as a sum of 0s & 1s mod 2).
+ fragBuilder->emitFunction(kFloat_GrSLType,
+ "xor",
+ SK_ARRAY_COUNT(gXorArgs),
+ gXorArgs,
+ "float bit1 = floor(f1 / fPowerOf2Divisor);"
+ "float bit2 = floor(f2 / fPowerOf2Divisor);"
+ "float bit3 = floor(f3 / fPowerOf2Divisor);"
+ "return mod(bit1 + bit2 + bit3, 2.0);",
+ &xorFuncName);
+
+ fragBuilder->codeAppend("float red = 0.0, green = 0.0, blue = 0.0;");
+
+ if (srcColor) {
+ fragBuilder->codeAppendf("vec3 src = 255.99 * %s.rgb;", srcColor);
+ } else {
+ fragBuilder->codeAppendf("vec3 src = vec3(255.99);");
+ }
+ fragBuilder->codeAppendf("vec3 dst = 255.99 * %s.rgb;", dstColor);
+ fragBuilder->codeAppendf("vec3 op = 255.99 * %s;", opColor);
+
+ fragBuilder->codeAppend("float modValue = 128.0;");
+
+ fragBuilder->codeAppend("for (int i = 0; i < 8; i++) {");
+
+ fragBuilder->codeAppendf("float bit = %s(src.r, dst.r, op.r, modValue);", xorFuncName.c_str());
+ fragBuilder->codeAppend("red += modValue * bit;");
+ fragBuilder->codeAppend("src.r = mod(src.r, modValue);");
+ fragBuilder->codeAppend("dst.r = mod(dst.r, modValue);");
+ fragBuilder->codeAppend("op.r = mod(op.r, modValue);");
+
+ fragBuilder->codeAppendf("bit = %s(src.g, dst.g, op.g, modValue);", xorFuncName.c_str());
+ fragBuilder->codeAppend("green += modValue * bit;");
+ fragBuilder->codeAppend("src.g = mod(src.g, modValue);");
+ fragBuilder->codeAppend("dst.g = mod(dst.g, modValue);");
+ fragBuilder->codeAppend("op.g = mod(op.g, modValue);");
+
+ fragBuilder->codeAppendf("bit = %s(src.b, dst.b, op.b, modValue);", xorFuncName.c_str());
+ fragBuilder->codeAppend("blue += modValue * bit;");
+ fragBuilder->codeAppend("src.b = mod(src.b, modValue);");
+ fragBuilder->codeAppend("dst.b = mod(dst.b, modValue);");
+ fragBuilder->codeAppend("op.b = mod(op.b, modValue);");
+
+ fragBuilder->codeAppend("modValue /= 2.0;");
+
+ fragBuilder->codeAppend("}");
+
+ fragBuilder->codeAppendf("%s = vec4(red/255.0, green/255.0, blue/255.0, 1.0);", outputColor);
+}
+
+class GLPixelXorFP;
+
+class PixelXorFP : public GrFragmentProcessor {
+public:
+ static const GrFragmentProcessor* Create(SkColor opColor, const GrFragmentProcessor* dst) {
+ return new PixelXorFP(opColor, dst);
+ }
+
+ ~PixelXorFP() override {};
+
+ const char* name() const override { return "PixelXor"; }
+
+ SkString dumpInfo() const override {
+ SkString str;
+ str.appendf("Color: 0x%08x", fOpColor);
+ return str;
+ }
+
+ SkColor opColor() const { return fOpColor; }
+
+private:
+ GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
+
+ void onGetGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const override;
+
+ bool onIsEqual(const GrFragmentProcessor& fpBase) const override {
+ const PixelXorFP& fp = fpBase.cast<PixelXorFP>();
+ return fOpColor == fp.fOpColor;
+ }
+
+ void onComputeInvariantOutput(GrInvariantOutput* inout) const override {
+ inout->setToUnknown(GrInvariantOutput::kWill_ReadInput);
+ }
+
+ PixelXorFP(SkColor opColor, const GrFragmentProcessor* dst)
+ : fOpColor(opColor) {
+ this->initClassID<PixelXorFP>();
+
+ SkASSERT(dst);
+ SkDEBUGCODE(int dstIndex = )this->registerChildProcessor(dst);
+ SkASSERT(0 == dstIndex);
+ }
+
+ SkColor fOpColor;
+
+ GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
+ typedef GrFragmentProcessor INHERITED;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+class GLPixelXorFP : public GrGLSLFragmentProcessor {
+public:
+ GLPixelXorFP(const PixelXorFP&) {}
+
+ ~GLPixelXorFP() override {}
+
+ void emitCode(EmitArgs& args) override {
+ GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
+ SkString dstColor("dstColor");
+ this->emitChild(0, nullptr, &dstColor, args);
+
+ fOpColorUni = args.fUniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+ kVec3f_GrSLType, kHigh_GrSLPrecision,
+ "opColor");
+ const char* kOpColorUni = args.fUniformHandler->getUniformCStr(fOpColorUni);
+
+ add_pixelxor_code(fragBuilder, args.fInputColor, dstColor.c_str(),
+ args.fOutputColor, kOpColorUni);
+ }
+
+ static void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuilder*) { }
+
+protected:
+ void onSetData(const GrGLSLProgramDataManager& pdman, const GrProcessor& proc) override {
+ const PixelXorFP& pixXor = proc.cast<PixelXorFP>();
+ pdman.set3f(fOpColorUni,
+ SkColorGetR(pixXor.opColor())/255.0f,
+ SkColorGetG(pixXor.opColor())/255.0f,
+ SkColorGetB(pixXor.opColor())/255.0f);
+ }
+
+private:
+ GrGLSLProgramDataManager::UniformHandle fOpColorUni;
+
+ typedef GrGLSLFragmentProcessor INHERITED;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+GrGLSLFragmentProcessor* PixelXorFP::onCreateGLSLInstance() const {
+ return new GLPixelXorFP(*this);
+}
+
+void PixelXorFP::onGetGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const {
+ GLPixelXorFP::GenKey(*this, caps, b);
+}
+
+const GrFragmentProcessor* PixelXorFP::TestCreate(GrProcessorTestData* d) {
+ SkColor color = d->fRandom->nextU();
+
+ SkAutoTUnref<const GrFragmentProcessor> dst(GrProcessorUnitTest::CreateChildFP(d));
+ return new PixelXorFP(color, dst);
+}
+
+GR_DEFINE_FRAGMENT_PROCESSOR_TEST(PixelXorFP);
+
+///////////////////////////////////////////////////////////////////////////////
+// Xfer Processor
+///////////////////////////////////////////////////////////////////////////////
+
+class PixelXorXP : public GrXferProcessor {
+public:
+ PixelXorXP(const DstTexture* dstTexture, bool hasMixedSamples, SkColor opColor)
+ : INHERITED(dstTexture, true, hasMixedSamples)
+ , fOpColor(opColor) {
+ this->initClassID<PixelXorXP>();
+ }
+
+ const char* name() const override { return "PixelXor"; }
+
+ GrGLSLXferProcessor* createGLSLInstance() const override;
+
+ SkColor opColor() const { return fOpColor; }
+
+private:
+ GrXferProcessor::OptFlags onGetOptimizations(const GrPipelineOptimizations& optimizations,
+ bool doesStencilWrite,
+ GrColor* overrideColor,
+ const GrCaps& caps) const override {
+ return GrXferProcessor::kNone_OptFlags;
+ }
+
+ void onGetGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const override;
+
+ bool onIsEqual(const GrXferProcessor& xpBase) const override {
+ const PixelXorXP& xp = xpBase.cast<PixelXorXP>();
+
+ return fOpColor == xp.fOpColor;
+ }
+
+ SkColor fOpColor;
+
+ typedef GrXferProcessor INHERITED;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+class GLPixelXorXP : public GrGLSLXferProcessor {
+public:
+ GLPixelXorXP(const PixelXorXP& pixelXorXP) { }
+
+ ~GLPixelXorXP() 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 {
+ fOpColorUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+ kVec3f_GrSLType, kHigh_GrSLPrecision,
+ "opColor");
+ const char* kOpColorUni = uniformHandler->getUniformCStr(fOpColorUni);
+
+ add_pixelxor_code(fragBuilder, srcColor, dstColor, outColor, kOpColorUni);
+
+ // Apply coverage.
+ INHERITED::DefaultCoverageModulation(fragBuilder, srcCoverage, dstColor, outColor,
+ outColorSecondary, proc);
+ }
+
+ void onSetData(const GrGLSLProgramDataManager& pdman,
+ const GrXferProcessor& processor) override {
+ const PixelXorXP& pixelXor = processor.cast<PixelXorXP>();
+ pdman.set3f(fOpColorUni,
+ SkColorGetR(pixelXor.opColor())/255.0f,
+ SkColorGetG(pixelXor.opColor())/255.0f,
+ SkColorGetB(pixelXor.opColor())/255.0f);
+ };
+
+ GrGLSLProgramDataManager::UniformHandle fOpColorUni;
+
+ typedef GrGLSLXferProcessor INHERITED;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+void PixelXorXP::onGetGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const {
+ GLPixelXorXP::GenKey(*this, caps, b);
+}
+
+GrGLSLXferProcessor* PixelXorXP::createGLSLInstance() const { return new GLPixelXorXP(*this); }
+
+///////////////////////////////////////////////////////////////////////////////
+
+class GrPixelXorXPFactory : public GrXPFactory {
+public:
+ static GrXPFactory* Create(SkColor opColor) {
+ return new GrPixelXorXPFactory(opColor);
+ }
+
+ void getInvariantBlendedColor(const GrProcOptInfo& colorPOI,
+ GrXPFactory::InvariantBlendedColor* blendedColor) const override {
+ blendedColor->fWillBlendWithDst = true;
+ blendedColor->fKnownColorFlags = kNone_GrColorComponentFlags;
+ }
+
+private:
+ GrPixelXorXPFactory(SkColor opColor)
+ : fOpColor(opColor) {
+ this->initClassID<GrPixelXorXPFactory>();
+ }
+
+ GrXferProcessor* onCreateXferProcessor(const GrCaps& caps,
+ const GrPipelineOptimizations& optimizations,
+ bool hasMixedSamples,
+ const DstTexture* dstTexture) const override {
+ return new PixelXorXP(dstTexture, hasMixedSamples, fOpColor);
+ }
+
+ bool willReadDstColor(const GrCaps& caps,
+ const GrPipelineOptimizations& optimizations,
+ bool hasMixedSamples) const override {
+ return true;
+ }
+
+ bool onIsEqual(const GrXPFactory& xpfBase) const override {
+ const GrPixelXorXPFactory& xpf = xpfBase.cast<GrPixelXorXPFactory>();
+ return fOpColor == xpf.fOpColor;
+ }
+
+ GR_DECLARE_XP_FACTORY_TEST;
+
+ SkColor fOpColor;
+
+ typedef GrXPFactory INHERITED;
+};
+
+GR_DEFINE_XP_FACTORY_TEST(GrPixelXorXPFactory);
+
+const GrXPFactory* GrPixelXorXPFactory::TestCreate(GrProcessorTestData* d) {
+ SkColor color = d->fRandom->nextU();
+
+ return GrPixelXorXPFactory::Create(color);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+bool SkPixelXorXfermode::asFragmentProcessor(const GrFragmentProcessor** output,
+ const GrFragmentProcessor* dst) const {
+ if (output) {
+ *output = PixelXorFP::Create(fOpColor, dst);
+ }
+ return true;
+}
+
+bool SkPixelXorXfermode::asXPFactory(GrXPFactory** xpf) const {
+ if (xpf) {
+ *xpf = GrPixelXorXPFactory::Create(fOpColor);
+ }
+ return true;
+}
+
+#endif
+
SkValue SkPixelXorXfermode::asValue() const {
auto value = SkValue::Object(SkValue::PixelXorXfermode);
value.set(SkValueKeys::PixelXorXfermode::kOpColor,
diff --git a/src/gpu/GrProcessor.cpp b/src/gpu/GrProcessor.cpp
index 1db9d76fda..20f7d7205b 100644
--- a/src/gpu/GrProcessor.cpp
+++ b/src/gpu/GrProcessor.cpp
@@ -48,9 +48,9 @@ GrProcessorTestFactory<GrGeometryProcessor>::GetFactories() {
* we verify the count is as expected. If a new factory is added, then these numbers must be
* manually adjusted.
*/
-static const int kFPFactoryCount = 38;
+static const int kFPFactoryCount = 39;
static const int kGPFactoryCount = 14;
-static const int kXPFactoryCount = 5;
+static const int kXPFactoryCount = 6;
template<>
void GrProcessorTestFactory<GrFragmentProcessor>::VerifyFactoryCount() {
diff --git a/src/gpu/glsl/GrGLSLXferProcessor.cpp b/src/gpu/glsl/GrGLSLXferProcessor.cpp
index 81bd015718..9d2538f081 100644
--- a/src/gpu/glsl/GrGLSLXferProcessor.cpp
+++ b/src/gpu/glsl/GrGLSLXferProcessor.cpp
@@ -88,3 +88,21 @@ void GrGLSLXferProcessor::setData(const GrGLSLProgramDataManager& pdm, const GrX
this->onSetData(pdm, xp);
}
+void GrGLSLXferProcessor::DefaultCoverageModulation(GrGLSLXPFragmentBuilder* fragBuilder,
+ const char* srcCoverage,
+ const char* dstColor,
+ const char* outColor,
+ const char* outColorSecondary,
+ const GrXferProcessor& proc) {
+ if (proc.dstReadUsesMixedSamples()) {
+ if (srcCoverage) {
+ fragBuilder->codeAppendf("%s *= %s;", outColor, srcCoverage);
+ fragBuilder->codeAppendf("%s = %s;", outColorSecondary, srcCoverage);
+ } else {
+ fragBuilder->codeAppendf("%s = vec4(1.0);", outColorSecondary);
+ }
+ } else if (srcCoverage) {
+ fragBuilder->codeAppendf("%s = %s * %s + (vec4(1.0) - %s) * %s;",
+ outColor, srcCoverage, outColor, srcCoverage, dstColor);
+ }
+}
diff --git a/src/gpu/glsl/GrGLSLXferProcessor.h b/src/gpu/glsl/GrGLSLXferProcessor.h
index ed8099b6f3..6886740584 100644
--- a/src/gpu/glsl/GrGLSLXferProcessor.h
+++ b/src/gpu/glsl/GrGLSLXferProcessor.h
@@ -68,6 +68,14 @@ public:
*/
void setData(const GrGLSLProgramDataManager& pdm, const GrXferProcessor& xp);
+protected:
+ static void DefaultCoverageModulation(GrGLSLXPFragmentBuilder* fragBuilder,
+ const char* srcCoverage,
+ const char* dstColor,
+ const char* outColor,
+ const char* outColorSecondary,
+ const GrXferProcessor& proc);
+
private:
/**
* Called by emitCode() when the XP will not be performing a dst read. This method is
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-28 08:56:28 +0000