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Converted GrConvexPolyEffect to SkSL DSL

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Change-Id: I3df21c585ae399d5a78d8b8dd9f4b3253f5f1fa2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/370877
Reviewed-by: John Stiles <johnstiles@google.com>
This commit is contained in:
Ethan Nicholas 2021-02-17 14:47:52 -05:00
parent 0fdcaa5757
commit 9f8e9ece8a
1 changed files with 16 additions and 19 deletions
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35
src/gpu/effects/GrConvexPolyEffect.cpp
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@ -12,6 +12,7 @@
#include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h"
#include "src/gpu/glsl/GrGLSLProgramDataManager.h"
#include "src/gpu/glsl/GrGLSLUniformHandler.h"
#include "src/sksl/dsl/priv/DSLFPs.h"
//////////////////////////////////////////////////////////////////////////////
@ -39,34 +40,30 @@ private:
void GrGLConvexPolyEffect::emitCode(EmitArgs& args) {
const GrConvexPolyEffect& cpe = args.fFp.cast<GrConvexPolyEffect>();
const char *edgeArrayName;
fEdgeUniform = args.fUniformHandler->addUniformArray(&cpe,
kFragment_GrShaderFlag,
kHalf3_GrSLType,
"edges",
cpe.getEdgeCount(),
&edgeArrayName);
GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
fragBuilder->codeAppend("half alpha = 1.0;\n");
fragBuilder->codeAppend("half edge;\n");
using namespace SkSL::dsl;
StartFragmentProcessor(this, &args);
Var edgeArray(kUniform_Modifier, Array(kHalf3, cpe.getEdgeCount()));
fEdgeUniform = VarUniformHandle(edgeArray);
Var alpha(kHalf, "alpha");
Declare(alpha, 1);
Var edge(kHalf, "edge");
Declare(edge);
for (int i = 0; i < cpe.getEdgeCount(); ++i) {
fragBuilder->codeAppendf("edge = dot(%s[%d], half3(sk_FragCoord.xy1));\n",
edgeArrayName, i);
edge = Dot(edgeArray[i], Half3(Swizzle(sk_FragCoord(), X, Y, ONE)));
if (GrProcessorEdgeTypeIsAA(cpe.getEdgeType())) {
fragBuilder->codeAppend("edge = saturate(edge);\n");
edge = Saturate(edge);
} else {
fragBuilder->codeAppend("edge = edge >= 0.5 ? 1.0 : 0.0;\n");
edge = Select(edge >= 0.5, 1.0, 0.0);
}
fragBuilder->codeAppend("alpha *= edge;\n");
alpha *= edge;
}
if (GrProcessorEdgeTypeIsInverseFill(cpe.getEdgeType())) {
fragBuilder->codeAppend("alpha = 1.0 - alpha;\n");
alpha = 1.0 - alpha;
}
SkString inputSample = this->invokeChild(/*childIndex=*/0, args);
fragBuilder->codeAppendf("return %s * alpha;\n", inputSample.c_str());
Return(SampleChild(0) * alpha);
EndFragmentProcessor();
}
void GrGLConvexPolyEffect::onSetData(const GrGLSLProgramDataManager& pdman,