| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrColorProcessor_DEFINED |
| #define GrColorProcessor_DEFINED |
| |
| #include "GrFragmentProcessor.h" |
| |
| class GrInvariantOutput; |
| |
| /** |
| * This is a simple GrFragmentProcessor that outputs a constant color. It may do one of the |
| * following with its input color: ignore it, or multiply it by the constant color, multiply its |
| * alpha by the constant color and ignore the input color's r, g, and b. |
| */ |
| class GrConstColorProcessor : public GrFragmentProcessor { |
| public: |
| enum InputMode { |
| kIgnore_InputMode, |
| kModulateRGBA_InputMode, |
| kModulateA_InputMode, |
| |
| kLastInputMode = kModulateA_InputMode |
| }; |
| static const int kInputModeCnt = kLastInputMode + 1; |
| |
| static GrFragmentProcessor* Create(GrColor color, InputMode mode) { |
| return SkNEW_ARGS(GrConstColorProcessor, (color, mode)); |
| } |
| |
| ~GrConstColorProcessor() override {} |
| |
| const char* name() const override { return "Color"; } |
| |
| void getGLProcessorKey(const GrGLCaps&, GrProcessorKeyBuilder*) const override; |
| |
| GrGLFragmentProcessor* createGLInstance() const override; |
| |
| GrColor color() const { return fColor; } |
| |
| InputMode inputMode() const { return fMode; } |
| |
| private: |
| GrConstColorProcessor(GrColor color, InputMode mode) : fColor(color), fMode(mode) { |
| this->initClassID<GrConstColorProcessor>(); |
| } |
| |
| bool onIsEqual(const GrFragmentProcessor&) const override; |
| |
| void onComputeInvariantOutput(GrInvariantOutput* inout) const override; |
| |
| GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
| |
| GrColor fColor; |
| InputMode fMode; |
| |
| typedef GrFragmentProcessor INHERITED; |
| }; |
| |
| #endif |