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Unified Diff: src/gpu/gl/builders/GrGLFragmentOnlyProgramBuilder.cpp

Issue 635533005: Revert of Cleanup of shader building system (Closed) Base URL: https://skia.googlesource.com/skia.git@solo_gp
Patch Set: Created 6 years, 2 months ago
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Index: src/gpu/gl/builders/GrGLFragmentOnlyProgramBuilder.cpp
diff --git a/src/gpu/gl/builders/GrGLFragmentOnlyProgramBuilder.cpp b/src/gpu/gl/builders/GrGLFragmentOnlyProgramBuilder.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..d5bccd7025a5ab0f4aa662437656eb209c773124
--- /dev/null
+++ b/src/gpu/gl/builders/GrGLFragmentOnlyProgramBuilder.cpp
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrGLFragmentOnlyProgramBuilder.h"
+#include "../GrGpuGL.h"
+
+GrGLFragmentOnlyProgramBuilder::GrGLFragmentOnlyProgramBuilder(GrGpuGL* gpu,
+ const GrOptDrawState& optState,
+ const GrGLProgramDesc& desc)
+ : INHERITED(gpu, optState, desc) {
+ SkASSERT(desc.getHeader().fUseFragShaderOnly);
+ SkASSERT(gpu->glCaps().pathRenderingSupport());
+ SkASSERT(GrGLProgramDesc::kAttribute_ColorInput != desc.getHeader().fColorInput);
+ SkASSERT(GrGLProgramDesc::kAttribute_ColorInput != desc.getHeader().fCoverageInput);
+}
+
+int GrGLFragmentOnlyProgramBuilder::addTexCoordSets(int count) {
+ int firstFreeCoordSet = fTexCoordSetCnt;
+ fTexCoordSetCnt += count;
+ SkASSERT(gpu()->glCaps().maxFixedFunctionTextureCoords() >= fTexCoordSetCnt);
+ return firstFreeCoordSet;
+}
+
+void
+GrGLFragmentOnlyProgramBuilder::createAndEmitEffects(const GrGeometryStage* geometryProcessor,
+ const GrFragmentStage* colorStages[],
+ const GrFragmentStage* coverageStages[],
+ GrGLSLExpr4* inputColor,
+ GrGLSLExpr4* inputCoverage) {
+ ///////////////////////////////////////////////////////////////////////////
+ // emit the per-effect code for both color and coverage effects
+
+ EffectKeyProvider colorKeyProvider(&this->desc(), EffectKeyProvider::kColor_EffectType);
+ fColorEffects.reset(this->onCreateAndEmitEffects(colorStages,
+ this->desc().numColorEffects(),
+ colorKeyProvider,
+ inputColor));
+
+ EffectKeyProvider coverageKeyProvider(&this->desc(), EffectKeyProvider::kCoverage_EffectType);
+ fCoverageEffects.reset(this->onCreateAndEmitEffects(coverageStages,
+ this->desc().numCoverageEffects(),
+ coverageKeyProvider,
+ inputCoverage));
+}
+
+GrGLProgramEffects* GrGLFragmentOnlyProgramBuilder::onCreateAndEmitEffects(
+ const GrFragmentStage* effectStages[], int effectCnt,
+ const GrGLProgramDesc::EffectKeyProvider& keyProvider, GrGLSLExpr4* inOutFSColor) {
+ fProgramEffects.reset(SkNEW_ARGS(GrGLPathTexGenProgramEffects, (effectCnt)));
+ this->INHERITED::createAndEmitEffects(effectStages,
+ effectCnt,
+ keyProvider,
+ inOutFSColor);
+ return fProgramEffects.detach();
+}
+
+void GrGLFragmentOnlyProgramBuilder::emitEffect(const GrProcessorStage& stage,
+ const GrProcessorKey& key,
+ const char* outColor,
+ const char* inColor,
+ int stageIndex) {
+ SkASSERT(fProgramEffects.get());
+ const GrProcessor& effect = *stage.getProcessor();
+
+ SkSTArray<2, GrGLProcessor::TransformedCoords> coords(effect.numTransforms());
+ SkSTArray<4, GrGLProcessor::TextureSampler> samplers(effect.numTextures());
+
+ this->setupPathTexGen(stage, &coords);
+ this->emitSamplers(effect, &samplers);
+
+ SkASSERT(fEffectEmitter);
+ GrGLProcessor* glEffect = fEffectEmitter->createGLInstance();
+ fProgramEffects->addEffect(glEffect);
+
+ GrGLFragmentShaderBuilder* fsBuilder = this->getFragmentShaderBuilder();
+ // Enclose custom code in a block to avoid namespace conflicts
+ SkString openBrace;
+ openBrace.printf("\t{ // Stage %d: %s\n", stageIndex, glEffect->name());
+ fsBuilder->codeAppend(openBrace.c_str());
+
+ fEffectEmitter->emit(key, outColor, inColor, coords, samplers);
+
+ fsBuilder->codeAppend("\t}\n");
+}
+
+void GrGLFragmentOnlyProgramBuilder::setupPathTexGen(
+ const GrProcessorStage& effectStage, GrGLProcessor::TransformedCoordsArray* outCoords) {
+ int numTransforms = effectStage.getProcessor()->numTransforms();
+ int texCoordIndex = this->addTexCoordSets(numTransforms);
+
+ fProgramEffects->addTransforms(texCoordIndex);
+
+ SkString name;
+ for (int t = 0; t < numTransforms; ++t) {
+ GrSLType type =
+ effectStage.isPerspectiveCoordTransform(t, false) ?
+ kVec3f_GrSLType :
+ kVec2f_GrSLType;
+
+ name.printf("%s(gl_TexCoord[%i])", GrGLSLTypeString(type), texCoordIndex++);
+ SkNEW_APPEND_TO_TARRAY(outCoords, GrGLProcessor::TransformedCoords, (name, type));
+ }
+}
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