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Unified Diff: src/gpu/effects/GrCustomXfermode.cpp

Issue 1334293003: Create fragment processor for performing input color blend with child processor (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: fix Created 5 years, 3 months ago
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Index: src/gpu/effects/GrCustomXfermode.cpp
diff --git a/src/gpu/effects/GrCustomXfermode.cpp b/src/gpu/effects/GrCustomXfermode.cpp
index f626e7a2111dea73d7dc424f7a6e58572a1daa7a..0d3103401367e24c2a1510ca070ba8aba74b0148 100644
--- a/src/gpu/effects/GrCustomXfermode.cpp
+++ b/src/gpu/effects/GrCustomXfermode.cpp
@@ -6,7 +6,6 @@
*/
#include "effects/GrCustomXfermode.h"
-#include "effects/GrCustomXfermodePriv.h"
#include "GrCoordTransform.h"
#include "GrContext.h"
@@ -18,6 +17,7 @@
#include "SkXfermode.h"
#include "gl/GrGLCaps.h"
#include "gl/GrGLGpu.h"
+#include "gl/GrGLSLBlend.h"
#include "gl/GrGLFragmentProcessor.h"
#include "gl/GrGLProgramDataManager.h"
#include "gl/builders/GrGLProgramBuilder.h"
@@ -67,452 +67,6 @@ static bool can_use_hw_blend_equation(GrBlendEquation equation,
return true;
}
-static void hard_light(GrGLFragmentBuilder* fsBuilder,
- const char* final,
- const char* src,
- const char* dst) {
- static const char kComponents[] = {'r', 'g', 'b'};
- for (size_t i = 0; i < SK_ARRAY_COUNT(kComponents); ++i) {
- char component = kComponents[i];
- fsBuilder->codeAppendf("if (2.0 * %s.%c <= %s.a) {", src, component, src);
- fsBuilder->codeAppendf("%s.%c = 2.0 * %s.%c * %s.%c;",
- final, component, src, component, dst, component);
- fsBuilder->codeAppend("} else {");
- fsBuilder->codeAppendf("%s.%c = %s.a * %s.a - 2.0 * (%s.a - %s.%c) * (%s.a - %s.%c);",
- final, component, src, dst, dst, dst, component, src, src,
- component);
- fsBuilder->codeAppend("}");
- }
- fsBuilder->codeAppendf("%s.rgb += %s.rgb * (1.0 - %s.a) + %s.rgb * (1.0 - %s.a);",
- final, src, dst, dst, src);
-}
-
-// Does one component of color-dodge
-static void color_dodge_component(GrGLFragmentBuilder* fsBuilder,
- const char* final,
- const char* src,
- const char* dst,
- const char component) {
- fsBuilder->codeAppendf("if (0.0 == %s.%c) {", dst, component);
- fsBuilder->codeAppendf("%s.%c = %s.%c * (1.0 - %s.a);",
- final, component, src, component, dst);
- fsBuilder->codeAppend("} else {");
- fsBuilder->codeAppendf("float d = %s.a - %s.%c;", src, src, component);
- fsBuilder->codeAppend("if (0.0 == d) {");
- fsBuilder->codeAppendf("%s.%c = %s.a * %s.a + %s.%c * (1.0 - %s.a) + %s.%c * (1.0 - %s.a);",
- final, component, src, dst, src, component, dst, dst, component,
- src);
- fsBuilder->codeAppend("} else {");
- fsBuilder->codeAppendf("d = min(%s.a, %s.%c * %s.a / d);",
- dst, dst, component, src);
- fsBuilder->codeAppendf("%s.%c = d * %s.a + %s.%c * (1.0 - %s.a) + %s.%c * (1.0 - %s.a);",
- final, component, src, src, component, dst, dst, component, src);
- fsBuilder->codeAppend("}");
- fsBuilder->codeAppend("}");
-}
-
-// Does one component of color-burn
-static void color_burn_component(GrGLFragmentBuilder* fsBuilder,
- const char* final,
- const char* src,
- const char* dst,
- const char component) {
- fsBuilder->codeAppendf("if (%s.a == %s.%c) {", dst, dst, component);
- fsBuilder->codeAppendf("%s.%c = %s.a * %s.a + %s.%c * (1.0 - %s.a) + %s.%c * (1.0 - %s.a);",
- final, component, src, dst, src, component, dst, dst, component,
- src);
- fsBuilder->codeAppendf("} else if (0.0 == %s.%c) {", src, component);
- fsBuilder->codeAppendf("%s.%c = %s.%c * (1.0 - %s.a);",
- final, component, dst, component, src);
- fsBuilder->codeAppend("} else {");
- fsBuilder->codeAppendf("float d = max(0.0, %s.a - (%s.a - %s.%c) * %s.a / %s.%c);",
- dst, dst, dst, component, src, src, component);
- fsBuilder->codeAppendf("%s.%c = %s.a * d + %s.%c * (1.0 - %s.a) + %s.%c * (1.0 - %s.a);",
- final, component, src, src, component, dst, dst, component, src);
- fsBuilder->codeAppend("}");
-}
-
-// Does one component of soft-light. Caller should have already checked that dst alpha > 0.
-static void soft_light_component_pos_dst_alpha(GrGLFragmentBuilder* fsBuilder,
- const char* final,
- const char* src,
- const char* dst,
- const char component) {
- // if (2S < Sa)
- fsBuilder->codeAppendf("if (2.0 * %s.%c <= %s.a) {", src, component, src);
- // (D^2 (Sa-2 S))/Da+(1-Da) S+D (-Sa+2 S+1)
- fsBuilder->codeAppendf("%s.%c = (%s.%c*%s.%c*(%s.a - 2.0*%s.%c)) / %s.a +"
- "(1.0 - %s.a) * %s.%c + %s.%c*(-%s.a + 2.0*%s.%c + 1.0);",
- final, component, dst, component, dst, component, src, src,
- component, dst, dst, src, component, dst, component, src, src,
- component);
- // else if (4D < Da)
- fsBuilder->codeAppendf("} else if (4.0 * %s.%c <= %s.a) {",
- dst, component, dst);
- fsBuilder->codeAppendf("float DSqd = %s.%c * %s.%c;",
- dst, component, dst, component);
- fsBuilder->codeAppendf("float DCub = DSqd * %s.%c;", dst, component);
- fsBuilder->codeAppendf("float DaSqd = %s.a * %s.a;", dst, dst);
- fsBuilder->codeAppendf("float DaCub = DaSqd * %s.a;", dst);
- // (Da^3 (-S)+Da^2 (S-D (3 Sa-6 S-1))+12 Da D^2 (Sa-2 S)-16 D^3 (Sa-2 S))/Da^2
- fsBuilder->codeAppendf("%s.%c ="
- "(DaSqd*(%s.%c - %s.%c * (3.0*%s.a - 6.0*%s.%c - 1.0)) +"
- " 12.0*%s.a*DSqd*(%s.a - 2.0*%s.%c) - 16.0*DCub * (%s.a - 2.0*%s.%c) -"
- " DaCub*%s.%c) / DaSqd;",
- final, component, src, component, dst, component,
- src, src, component, dst, src, src, component, src, src,
- component, src, component);
- fsBuilder->codeAppendf("} else {");
- // -sqrt(Da * D) (Sa-2 S)-Da S+D (Sa-2 S+1)+S
- fsBuilder->codeAppendf("%s.%c = %s.%c*(%s.a - 2.0*%s.%c + 1.0) + %s.%c -"
- " sqrt(%s.a*%s.%c)*(%s.a - 2.0*%s.%c) - %s.a*%s.%c;",
- final, component, dst, component, src, src, component, src, component,
- dst, dst, component, src, src, component, dst, src, component);
- fsBuilder->codeAppendf("}");
-}
-
-// Adds a function that takes two colors and an alpha as input. It produces a color with the
-// hue and saturation of the first color, the luminosity of the second color, and the input
-// alpha. It has this signature:
-// vec3 set_luminance(vec3 hueSatColor, float alpha, vec3 lumColor).
-static void add_lum_function(GrGLFragmentBuilder* fsBuilder, SkString* setLumFunction) {
- // Emit a helper that gets the luminance of a color.
- SkString getFunction;
- GrGLShaderVar getLumArgs[] = {
- GrGLShaderVar("color", kVec3f_GrSLType),
- };
- SkString getLumBody("return dot(vec3(0.3, 0.59, 0.11), color);");
- fsBuilder->emitFunction(kFloat_GrSLType,
- "luminance",
- SK_ARRAY_COUNT(getLumArgs), getLumArgs,
- getLumBody.c_str(),
- &getFunction);
-
- // Emit the set luminance function.
- GrGLShaderVar setLumArgs[] = {
- GrGLShaderVar("hueSat", kVec3f_GrSLType),
- GrGLShaderVar("alpha", kFloat_GrSLType),
- GrGLShaderVar("lumColor", kVec3f_GrSLType),
- };
- SkString setLumBody;
- setLumBody.printf("float diff = %s(lumColor - hueSat);", getFunction.c_str());
- setLumBody.append("vec3 outColor = hueSat + diff;");
- setLumBody.appendf("float outLum = %s(outColor);", getFunction.c_str());
- setLumBody.append("float minComp = min(min(outColor.r, outColor.g), outColor.b);"
- "float maxComp = max(max(outColor.r, outColor.g), outColor.b);"
- "if (minComp < 0.0 && outLum != minComp) {"
- "outColor = outLum + ((outColor - vec3(outLum, outLum, outLum)) * outLum) /"
- "(outLum - minComp);"
- "}"
- "if (maxComp > alpha && maxComp != outLum) {"
- "outColor = outLum +"
- "((outColor - vec3(outLum, outLum, outLum)) * (alpha - outLum)) /"
- "(maxComp - outLum);"
- "}"
- "return outColor;");
- fsBuilder->emitFunction(kVec3f_GrSLType,
- "set_luminance",
- SK_ARRAY_COUNT(setLumArgs), setLumArgs,
- setLumBody.c_str(),
- setLumFunction);
-}
-
-// Adds a function that creates a color with the hue and luminosity of one input color and
-// the saturation of another color. It will have this signature:
-// float set_saturation(vec3 hueLumColor, vec3 satColor)
-static void add_sat_function(GrGLFragmentBuilder* fsBuilder, SkString* setSatFunction) {
- // Emit a helper that gets the saturation of a color
- SkString getFunction;
- GrGLShaderVar getSatArgs[] = { GrGLShaderVar("color", kVec3f_GrSLType) };
- SkString getSatBody;
- getSatBody.printf("return max(max(color.r, color.g), color.b) - "
- "min(min(color.r, color.g), color.b);");
- fsBuilder->emitFunction(kFloat_GrSLType,
- "saturation",
- SK_ARRAY_COUNT(getSatArgs), getSatArgs,
- getSatBody.c_str(),
- &getFunction);
-
- // Emit a helper that sets the saturation given sorted input channels. This used
- // to use inout params for min, mid, and max components but that seems to cause
- // problems on PowerVR drivers. So instead it returns a vec3 where r, g ,b are the
- // adjusted min, mid, and max inputs, respectively.
- SkString helperFunction;
- GrGLShaderVar helperArgs[] = {
- GrGLShaderVar("minComp", kFloat_GrSLType),
- GrGLShaderVar("midComp", kFloat_GrSLType),
- GrGLShaderVar("maxComp", kFloat_GrSLType),
- GrGLShaderVar("sat", kFloat_GrSLType),
- };
- static const char kHelperBody[] = "if (minComp < maxComp) {"
- "vec3 result;"
- "result.r = 0.0;"
- "result.g = sat * (midComp - minComp) / (maxComp - minComp);"
- "result.b = sat;"
- "return result;"
- "} else {"
- "return vec3(0, 0, 0);"
- "}";
- fsBuilder->emitFunction(kVec3f_GrSLType,
- "set_saturation_helper",
- SK_ARRAY_COUNT(helperArgs), helperArgs,
- kHelperBody,
- &helperFunction);
-
- GrGLShaderVar setSatArgs[] = {
- GrGLShaderVar("hueLumColor", kVec3f_GrSLType),
- GrGLShaderVar("satColor", kVec3f_GrSLType),
- };
- const char* helpFunc = helperFunction.c_str();
- SkString setSatBody;
- setSatBody.appendf("float sat = %s(satColor);"
- "if (hueLumColor.r <= hueLumColor.g) {"
- "if (hueLumColor.g <= hueLumColor.b) {"
- "hueLumColor.rgb = %s(hueLumColor.r, hueLumColor.g, hueLumColor.b, sat);"
- "} else if (hueLumColor.r <= hueLumColor.b) {"
- "hueLumColor.rbg = %s(hueLumColor.r, hueLumColor.b, hueLumColor.g, sat);"
- "} else {"
- "hueLumColor.brg = %s(hueLumColor.b, hueLumColor.r, hueLumColor.g, sat);"
- "}"
- "} else if (hueLumColor.r <= hueLumColor.b) {"
- "hueLumColor.grb = %s(hueLumColor.g, hueLumColor.r, hueLumColor.b, sat);"
- "} else if (hueLumColor.g <= hueLumColor.b) {"
- "hueLumColor.gbr = %s(hueLumColor.g, hueLumColor.b, hueLumColor.r, sat);"
- "} else {"
- "hueLumColor.bgr = %s(hueLumColor.b, hueLumColor.g, hueLumColor.r, sat);"
- "}"
- "return hueLumColor;",
- getFunction.c_str(), helpFunc, helpFunc, helpFunc, helpFunc,
- helpFunc, helpFunc);
- fsBuilder->emitFunction(kVec3f_GrSLType,
- "set_saturation",
- SK_ARRAY_COUNT(setSatArgs), setSatArgs,
- setSatBody.c_str(),
- setSatFunction);
-
-}
-
-static void emit_custom_xfermode_code(SkXfermode::Mode mode,
- GrGLFragmentBuilder* fsBuilder,
- const char* outputColor,
- const char* inputColor,
- const char* dstColor) {
- // We don't try to optimize for this case at all
- if (nullptr == inputColor) {
- fsBuilder->codeAppendf("const vec4 ones = vec4(1);");
- inputColor = "ones";
- }
- fsBuilder->codeAppendf("// SkXfermode::Mode: %s\n", SkXfermode::ModeName(mode));
-
- // These all perform src-over on the alpha channel.
- fsBuilder->codeAppendf("%s.a = %s.a + (1.0 - %s.a) * %s.a;",
- outputColor, inputColor, inputColor, dstColor);
-
- switch (mode) {
- case SkXfermode::kOverlay_Mode:
- // Overlay is Hard-Light with the src and dst reversed
- hard_light(fsBuilder, outputColor, dstColor, inputColor);
- break;
- case SkXfermode::kDarken_Mode:
- fsBuilder->codeAppendf("%s.rgb = min((1.0 - %s.a) * %s.rgb + %s.rgb, "
- "(1.0 - %s.a) * %s.rgb + %s.rgb);",
- outputColor,
- inputColor, dstColor, inputColor,
- dstColor, inputColor, dstColor);
- break;
- case SkXfermode::kLighten_Mode:
- fsBuilder->codeAppendf("%s.rgb = max((1.0 - %s.a) * %s.rgb + %s.rgb, "
- "(1.0 - %s.a) * %s.rgb + %s.rgb);",
- outputColor,
- inputColor, dstColor, inputColor,
- dstColor, inputColor, dstColor);
- break;
- case SkXfermode::kColorDodge_Mode:
- color_dodge_component(fsBuilder, outputColor, inputColor, dstColor, 'r');
- color_dodge_component(fsBuilder, outputColor, inputColor, dstColor, 'g');
- color_dodge_component(fsBuilder, outputColor, inputColor, dstColor, 'b');
- break;
- case SkXfermode::kColorBurn_Mode:
- color_burn_component(fsBuilder, outputColor, inputColor, dstColor, 'r');
- color_burn_component(fsBuilder, outputColor, inputColor, dstColor, 'g');
- color_burn_component(fsBuilder, outputColor, inputColor, dstColor, 'b');
- break;
- case SkXfermode::kHardLight_Mode:
- hard_light(fsBuilder, outputColor, inputColor, dstColor);
- break;
- case SkXfermode::kSoftLight_Mode:
- fsBuilder->codeAppendf("if (0.0 == %s.a) {", dstColor);
- fsBuilder->codeAppendf("%s.rgba = %s;", outputColor, inputColor);
- fsBuilder->codeAppendf("} else {");
- soft_light_component_pos_dst_alpha(fsBuilder, outputColor, inputColor, dstColor, 'r');
- soft_light_component_pos_dst_alpha(fsBuilder, outputColor, inputColor, dstColor, 'g');
- soft_light_component_pos_dst_alpha(fsBuilder, outputColor, inputColor, dstColor, 'b');
- fsBuilder->codeAppendf("}");
- break;
- case SkXfermode::kDifference_Mode:
- fsBuilder->codeAppendf("%s.rgb = %s.rgb + %s.rgb -"
- "2.0 * min(%s.rgb * %s.a, %s.rgb * %s.a);",
- outputColor, inputColor, dstColor, inputColor, dstColor,
- dstColor, inputColor);
- break;
- case SkXfermode::kExclusion_Mode:
- fsBuilder->codeAppendf("%s.rgb = %s.rgb + %s.rgb - "
- "2.0 * %s.rgb * %s.rgb;",
- outputColor, dstColor, inputColor, dstColor, inputColor);
- break;
- case SkXfermode::kMultiply_Mode:
- fsBuilder->codeAppendf("%s.rgb = (1.0 - %s.a) * %s.rgb + "
- "(1.0 - %s.a) * %s.rgb + "
- "%s.rgb * %s.rgb;",
- outputColor, inputColor, dstColor, dstColor, inputColor,
- inputColor, dstColor);
- break;
- case SkXfermode::kHue_Mode: {
- // SetLum(SetSat(S * Da, Sat(D * Sa)), Sa*Da, D*Sa) + (1 - Sa) * D + (1 - Da) * S
- SkString setSat, setLum;
- add_sat_function(fsBuilder, &setSat);
- add_lum_function(fsBuilder, &setLum);
- fsBuilder->codeAppendf("vec4 dstSrcAlpha = %s * %s.a;",
- dstColor, inputColor);
- fsBuilder->codeAppendf("%s.rgb = %s(%s(%s.rgb * %s.a, dstSrcAlpha.rgb),"
- "dstSrcAlpha.a, dstSrcAlpha.rgb);",
- outputColor, setLum.c_str(), setSat.c_str(), inputColor,
- dstColor);
- fsBuilder->codeAppendf("%s.rgb += (1.0 - %s.a) * %s.rgb + (1.0 - %s.a) * %s.rgb;",
- outputColor, inputColor, dstColor, dstColor, inputColor);
- break;
- }
- case SkXfermode::kSaturation_Mode: {
- // SetLum(SetSat(D * Sa, Sat(S * Da)), Sa*Da, D*Sa)) + (1 - Sa) * D + (1 - Da) * S
- SkString setSat, setLum;
- add_sat_function(fsBuilder, &setSat);
- add_lum_function(fsBuilder, &setLum);
- fsBuilder->codeAppendf("vec4 dstSrcAlpha = %s * %s.a;",
- dstColor, inputColor);
- fsBuilder->codeAppendf("%s.rgb = %s(%s(dstSrcAlpha.rgb, %s.rgb * %s.a),"
- "dstSrcAlpha.a, dstSrcAlpha.rgb);",
- outputColor, setLum.c_str(), setSat.c_str(), inputColor,
- dstColor);
- fsBuilder->codeAppendf("%s.rgb += (1.0 - %s.a) * %s.rgb + (1.0 - %s.a) * %s.rgb;",
- outputColor, inputColor, dstColor, dstColor, inputColor);
- break;
- }
- case SkXfermode::kColor_Mode: {
- // SetLum(S * Da, Sa* Da, D * Sa) + (1 - Sa) * D + (1 - Da) * S
- SkString setLum;
- add_lum_function(fsBuilder, &setLum);
- fsBuilder->codeAppendf("vec4 srcDstAlpha = %s * %s.a;",
- inputColor, dstColor);
- fsBuilder->codeAppendf("%s.rgb = %s(srcDstAlpha.rgb, srcDstAlpha.a, %s.rgb * %s.a);",
- outputColor, setLum.c_str(), dstColor, inputColor);
- fsBuilder->codeAppendf("%s.rgb += (1.0 - %s.a) * %s.rgb + (1.0 - %s.a) * %s.rgb;",
- outputColor, inputColor, dstColor, dstColor, inputColor);
- break;
- }
- case SkXfermode::kLuminosity_Mode: {
- // SetLum(D * Sa, Sa* Da, S * Da) + (1 - Sa) * D + (1 - Da) * S
- SkString setLum;
- add_lum_function(fsBuilder, &setLum);
- fsBuilder->codeAppendf("vec4 srcDstAlpha = %s * %s.a;",
- inputColor, dstColor);
- fsBuilder->codeAppendf("%s.rgb = %s(%s.rgb * %s.a, srcDstAlpha.a, srcDstAlpha.rgb);",
- outputColor, setLum.c_str(), dstColor, inputColor);
- fsBuilder->codeAppendf("%s.rgb += (1.0 - %s.a) * %s.rgb + (1.0 - %s.a) * %s.rgb;",
- outputColor, inputColor, dstColor, dstColor, inputColor);
- break;
- }
- default:
- SkFAIL("Unknown Custom Xfer mode.");
- break;
- }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// Fragment Processor
-///////////////////////////////////////////////////////////////////////////////
-
-GrFragmentProcessor* GrCustomXfermode::CreateFP(GrProcessorDataManager* procDataManager,
- SkXfermode::Mode mode, GrTexture* background) {
- if (!GrCustomXfermode::IsSupportedMode(mode)) {
- return nullptr;
- } else {
- return new GrCustomXferFP(procDataManager, mode, background);
- }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-class GLCustomXferFP : public GrGLFragmentProcessor {
-public:
- GLCustomXferFP(const GrFragmentProcessor&) {}
- ~GLCustomXferFP() override {};
-
- void emitCode(EmitArgs& args) override {
- SkXfermode::Mode mode = args.fFp.cast<GrCustomXferFP>().mode();
- GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder();
- const char* dstColor = "bgColor";
- fsBuilder->codeAppendf("vec4 %s = ", dstColor);
- fsBuilder->appendTextureLookup(args.fSamplers[0], args.fCoords[0].c_str(),
- args.fCoords[0].getType());
- fsBuilder->codeAppendf(";");
-
- emit_custom_xfermode_code(mode, fsBuilder, args.fOutputColor, args.fInputColor, dstColor);
- }
-
- static void GenKey(const GrFragmentProcessor& proc, const GrGLSLCaps&, GrProcessorKeyBuilder* b) {
- // The background may come from the dst or from a texture.
- uint32_t key = proc.numTextures();
- SkASSERT(key <= 1);
- key |= proc.cast<GrCustomXferFP>().mode() << 1;
- b->add32(key);
- }
-
-protected:
- void onSetData(const GrGLProgramDataManager&, const GrProcessor&) override {}
-
-private:
- typedef GrGLFragmentProcessor INHERITED;
-};
-
-///////////////////////////////////////////////////////////////////////////////
-
-GrCustomXferFP::GrCustomXferFP(GrProcessorDataManager*, SkXfermode::Mode mode, GrTexture* background)
- : fMode(mode) {
- this->initClassID<GrCustomXferFP>();
-
- SkASSERT(background);
- fBackgroundTransform.reset(kLocal_GrCoordSet, background,
- GrTextureParams::kNone_FilterMode);
- this->addCoordTransform(&fBackgroundTransform);
- fBackgroundAccess.reset(background);
- this->addTextureAccess(&fBackgroundAccess);
-}
-
-void GrCustomXferFP::onGetGLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const {
- GLCustomXferFP::GenKey(*this, caps, b);
-}
-
-GrGLFragmentProcessor* GrCustomXferFP::onCreateGLInstance() const {
- return new GLCustomXferFP(*this);
-}
-
-bool GrCustomXferFP::onIsEqual(const GrFragmentProcessor& other) const {
- const GrCustomXferFP& s = other.cast<GrCustomXferFP>();
- return fMode == s.fMode;
-}
-
-void GrCustomXferFP::onComputeInvariantOutput(GrInvariantOutput* inout) const {
- inout->setToUnknown(GrInvariantOutput::kWill_ReadInput);
-}
-
-GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrCustomXferFP);
-const GrFragmentProcessor* GrCustomXferFP::TestCreate(GrProcessorTestData* d) {
- int mode = d->fRandom->nextRangeU(SkXfermode::kLastCoeffMode + 1, SkXfermode::kLastSeparableMode);
-
- return new GrCustomXferFP(d->fProcDataManager, static_cast<SkXfermode::Mode>(mode),
- d->fTextures[0]);
-}
-
///////////////////////////////////////////////////////////////////////////////
// Xfer Processor
///////////////////////////////////////////////////////////////////////////////
@@ -567,16 +121,6 @@ private:
///////////////////////////////////////////////////////////////////////////////
-GrXPFactory* GrCustomXfermode::CreateXPFactory(SkXfermode::Mode mode) {
- if (!GrCustomXfermode::IsSupportedMode(mode)) {
- return nullptr;
- } else {
- return new GrCustomXPFactory(mode);
- }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
class GLCustomXP : public GrGLXferProcessor {
public:
GLCustomXP(const GrXferProcessor&) {}
@@ -621,7 +165,7 @@ private:
SkASSERT(!xp.hasHWBlendEquation());
GrGLXPFragmentBuilder* fsBuilder = pb->getFragmentShaderBuilder();
- emit_custom_xfermode_code(xp.mode(), fsBuilder, outColor, srcColor, dstColor);
+ GrGLSLBlend::AppendMode(fsBuilder, srcColor, dstColor, outColor, xp.mode());
}
void onSetData(const GrGLProgramDataManager&, const GrXferProcessor&) override {}
@@ -770,20 +314,54 @@ void CustomXP::onGetBlendInfo(BlendInfo* blendInfo) const {
}
///////////////////////////////////////////////////////////////////////////////
+class CustomXPFactory : public GrXPFactory {
+public:
+ CustomXPFactory(SkXfermode::Mode mode);
+
+ bool supportsRGBCoverage(GrColor knownColor, uint32_t knownColorFlags) const override {
+ return true;
+ }
+
+ void getInvariantBlendedColor(const GrProcOptInfo& colorPOI,
+ GrXPFactory::InvariantBlendedColor*) const override;
+
+private:
+ GrXferProcessor* onCreateXferProcessor(const GrCaps& caps,
+ const GrProcOptInfo& colorPOI,
+ const GrProcOptInfo& coveragePOI,
+ bool hasMixedSamples,
+ const DstTexture*) const override;
+
+ bool willReadDstColor(const GrCaps& caps,
+ const GrProcOptInfo& colorPOI,
+ const GrProcOptInfo& coveragePOI,
+ bool hasMixedSamples) const override;
+
+ bool onIsEqual(const GrXPFactory& xpfBase) const override {
+ const CustomXPFactory& xpf = xpfBase.cast<CustomXPFactory>();
+ return fMode == xpf.fMode;
+ }
+
+ GR_DECLARE_XP_FACTORY_TEST;
+
+ SkXfermode::Mode fMode;
+ GrBlendEquation fHWBlendEquation;
-GrCustomXPFactory::GrCustomXPFactory(SkXfermode::Mode mode)
+ typedef GrXPFactory INHERITED;
+};
+
+CustomXPFactory::CustomXPFactory(SkXfermode::Mode mode)
: fMode(mode),
fHWBlendEquation(hw_blend_equation(mode)) {
SkASSERT(GrCustomXfermode::IsSupportedMode(fMode));
- this->initClassID<GrCustomXPFactory>();
+ this->initClassID<CustomXPFactory>();
}
-GrXferProcessor*
-GrCustomXPFactory::onCreateXferProcessor(const GrCaps& caps,
- const GrProcOptInfo& colorPOI,
- const GrProcOptInfo& coveragePOI,
- bool hasMixedSamples,
- const DstTexture* dstTexture) const {
+GrXferProcessor* CustomXPFactory::onCreateXferProcessor(const GrCaps& caps,
+ const GrProcOptInfo& colorPOI,
+ const GrProcOptInfo& coveragePOI,
+ bool hasMixedSamples,
+ const DstTexture* dstTexture) const {
if (can_use_hw_blend_equation(fHWBlendEquation, coveragePOI, caps)) {
SkASSERT(!dstTexture || !dstTexture->texture());
return new CustomXP(fMode, fHWBlendEquation);
@@ -791,24 +369,33 @@ GrCustomXPFactory::onCreateXferProcessor(const GrCaps& caps,
return new CustomXP(dstTexture, hasMixedSamples, fMode);
}
-bool GrCustomXPFactory::willReadDstColor(const GrCaps& caps,
- const GrProcOptInfo& colorPOI,
- const GrProcOptInfo& coveragePOI,
- bool hasMixedSamples) const {
+bool CustomXPFactory::willReadDstColor(const GrCaps& caps,
+ const GrProcOptInfo& colorPOI,
+ const GrProcOptInfo& coveragePOI,
+ bool hasMixedSamples) const {
return !can_use_hw_blend_equation(fHWBlendEquation, coveragePOI, caps);
}
-void GrCustomXPFactory::getInvariantBlendedColor(const GrProcOptInfo& colorPOI,
- InvariantBlendedColor* blendedColor) const {
+void CustomXPFactory::getInvariantBlendedColor(const GrProcOptInfo& colorPOI,
+ InvariantBlendedColor* blendedColor) const {
blendedColor->fWillBlendWithDst = true;
blendedColor->fKnownColorFlags = kNone_GrColorComponentFlags;
}
-GR_DEFINE_XP_FACTORY_TEST(GrCustomXPFactory);
-const GrXPFactory* GrCustomXPFactory::TestCreate(GrProcessorTestData* d) {
+GR_DEFINE_XP_FACTORY_TEST(CustomXPFactory);
+const GrXPFactory* CustomXPFactory::TestCreate(GrProcessorTestData* d) {
int mode = d->fRandom->nextRangeU(SkXfermode::kLastCoeffMode + 1,
SkXfermode::kLastSeparableMode);
- return new GrCustomXPFactory(static_cast<SkXfermode::Mode>(mode));
+ return new CustomXPFactory(static_cast<SkXfermode::Mode>(mode));
}
+///////////////////////////////////////////////////////////////////////////////
+
+GrXPFactory* GrCustomXfermode::CreateXPFactory(SkXfermode::Mode mode) {
+ if (!GrCustomXfermode::IsSupportedMode(mode)) {
+ return nullptr;
+ } else {
+ return new CustomXPFactory(mode);
+ }
+}
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