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- /*
- * 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 "src/core/SkNormalFlatSource.h"
- #include "include/core/SkPoint3.h"
- #include "src/core/SkArenaAlloc.h"
- #include "src/core/SkNormalSource.h"
- #include "src/core/SkReadBuffer.h"
- #include "src/core/SkWriteBuffer.h"
- #if SK_SUPPORT_GPU
- #include "src/gpu/glsl/GrGLSLFragmentProcessor.h"
- #include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h"
- class NormalFlatFP : public GrFragmentProcessor {
- public:
- static std::unique_ptr<GrFragmentProcessor> Make() {
- return std::unique_ptr<GrFragmentProcessor>(new NormalFlatFP());
- }
- const char* name() const override { return "NormalFlatFP"; }
- std::unique_ptr<GrFragmentProcessor> clone() const override { return Make(); }
- private:
- class GLSLNormalFlatFP : public GrGLSLFragmentProcessor {
- public:
- GLSLNormalFlatFP() {}
- void emitCode(EmitArgs& args) override {
- GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
- fragBuilder->codeAppendf("%s = half4(0, 0, 1, 0);", args.fOutputColor);
- }
- private:
- void onSetData(const GrGLSLProgramDataManager&, const GrFragmentProcessor&) override {}
- };
- NormalFlatFP()
- : INHERITED(kFlatNormalsFP_ClassID, kConstantOutputForConstantInput_OptimizationFlag) {
- }
- void onGetGLSLProcessorKey(const GrShaderCaps& caps, GrProcessorKeyBuilder* b) const override {}
- SkPMColor4f constantOutputForConstantInput(const SkPMColor4f&) const override {
- return { 0, 0, 1, 0 };
- }
- GrGLSLFragmentProcessor* onCreateGLSLInstance() const override { return new GLSLNormalFlatFP; }
- bool onIsEqual(const GrFragmentProcessor&) const override { return true; }
- typedef GrFragmentProcessor INHERITED;
- };
- std::unique_ptr<GrFragmentProcessor> SkNormalFlatSourceImpl::asFragmentProcessor(
- const GrFPArgs&) const {
- return NormalFlatFP::Make();
- }
- #endif // SK_SUPPORT_GPU
- ////////////////////////////////////////////////////////////////////////////
- SkNormalFlatSourceImpl::Provider::Provider() {}
- SkNormalFlatSourceImpl::Provider::~Provider() {}
- SkNormalSource::Provider* SkNormalFlatSourceImpl::asProvider(const SkShaderBase::ContextRec &rec,
- SkArenaAlloc *alloc) const {
- return alloc->make<Provider>();
- }
- void SkNormalFlatSourceImpl::Provider::fillScanLine(int x, int y, SkPoint3 output[],
- int count) const {
- for (int i = 0; i < count; i++) {
- output[i] = {0.0f, 0.0f, 1.0f};
- }
- }
- ////////////////////////////////////////////////////////////////////////////////
- sk_sp<SkFlattenable> SkNormalFlatSourceImpl::CreateProc(SkReadBuffer& buf) {
- return sk_make_sp<SkNormalFlatSourceImpl>();
- }
- void SkNormalFlatSourceImpl::flatten(SkWriteBuffer& buf) const {
- this->INHERITED::flatten(buf);
- }
- ////////////////////////////////////////////////////////////////////////////
- sk_sp<SkNormalSource> SkNormalSource::MakeFlat() {
- return sk_make_sp<SkNormalFlatSourceImpl>();
- }
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