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Unified Diff: src/gpu/glsl/GrGLSLCaps.h

Issue 1576023002: Make readback of alpha channel work for RGBA. (Closed) Base URL: https://skia.googlesource.com/skia.git@swiz
Patch Set: more Created 4 years, 11 months ago
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Index: src/gpu/glsl/GrGLSLCaps.h
diff --git a/src/gpu/glsl/GrGLSLCaps.h b/src/gpu/glsl/GrGLSLCaps.h
index eba9602e5ac270cd65f68d156d5ae96d632f5e8d..136bef466c0642b3cd07547b611b5bb1c4a6cf88 100755
--- a/src/gpu/glsl/GrGLSLCaps.h
+++ b/src/gpu/glsl/GrGLSLCaps.h
@@ -108,12 +108,17 @@ public:
/**
* Given a texture's config, this determines what swizzle must be appended to accesses to the
* texture in generated shader code. Swizzling may be implemented in texture parameters or a
- * sampler rather than in the shader. In this case the shader swizzle will always be "rgba".
+ * sampler rather than in the shader. In this case the returned swizzle will always be "rgba".
*/
const GrSwizzle& configTextureSwizzle(GrPixelConfig config) const {
return fConfigTextureSwizzle[config];
}
+ /** Swizzle that should occur on the fragment shader outputs for a given config. */
+ const GrSwizzle& configOutputSwizzle(GrPixelConfig config) const {
+ return fConfigOutputSwizzle[config];
+ }
+
GrGLSLGeneration generation() const { return fGLSLGeneration; }
/**
@@ -150,6 +155,7 @@ private:
AdvBlendEqInteraction fAdvBlendEqInteraction;
GrSwizzle fConfigTextureSwizzle[kGrPixelConfigCnt];
+ GrSwizzle fConfigOutputSwizzle[kGrPixelConfigCnt];
friend class GrGLCaps; // For initialization.
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