Index: src/gpu/effects/GrGammaEffect.h |
diff --git a/src/gpu/effects/GrGammaEffect.h b/src/gpu/effects/GrGammaEffect.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..44d6d6707cb1f14a862764b59845b00b416e7200 |
--- /dev/null |
+++ b/src/gpu/effects/GrGammaEffect.h |
@@ -0,0 +1,42 @@ |
+/* |
+ * Copyright 2016 Google Inc. |
+ * |
+ * Use of this source code is governed by a BSD-style license that can be |
+ * found in the LICENSE file. |
+ */ |
+ |
+#ifndef GrGammaEffect_DEFINED |
+#define GrGammaEffect_DEFINED |
+ |
+#include "GrSingleTextureEffect.h" |
+ |
+class GrGammaEffect : public GrSingleTextureEffect { |
+public: |
+ /** |
+ * Creates an effect that applies a gamma curve. The source texture is always |
+ * sampled unfiltered and with clamping. |
+ */ |
+ static const GrFragmentProcessor* Create(GrTexture*, SkScalar gamma); |
+ |
+ const char* name() const override { return "Gamma"; } |
+ |
+ bool gammaIsSRGB() const { return fGammaIsSRGB; } |
+ SkScalar gamma() const { return fGamma; } |
+ |
+private: |
+ GrGammaEffect(GrTexture*, SkScalar gamma); |
+ |
+ GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
+ void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
+ bool onIsEqual(const GrFragmentProcessor&) const override; |
+ void onComputeInvariantOutput(GrInvariantOutput* inout) const override; |
+ |
+ bool fGammaIsSRGB; |
+ SkScalar fGamma; |
+ |
+ GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
+ |
+ typedef GrSingleTextureEffect INHERITED; |
+}; |
+ |
+#endif |