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src/gpu/effects/GrConvolutionEffect.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrConvolutionEffect_DEFINED
 #define GrConvolutionEffect_DEFINED
 
 #include "Gr1DKernelEffect.h"
 #include "GrInvariantOutput.h"
 
 /**
  * A convolution effect. The kernel is specified as an array of 2 * half-width
  * + 1 weights. Each texel is multiplied by it's weight and summed to determine
  * the output color. The output color is modulated by the input color.
  */
 class GrConvolutionEffect : public Gr1DKernelEffect {
 
 public:
 
     /// Convolve with an arbitrary user-specified kernel
     static GrFragmentProcessor* Create(GrTexture* tex,
                                        Direction dir,
                                        int halfWidth,
                                        const float* kernel,
                                        bool useBounds,
-                                       float bounds[2]) {
-        return new GrConvolutionEffect(tex, dir, halfWidth, kernel, useBounds, bounds);
+                                       float bounds[2], GrRenderTarget* dst) {
+        return new GrConvolutionEffect(tex, dir, halfWidth, kernel, useBounds, bounds, dst);
     }
 
     /// Convolve with a Gaussian kernel
     static GrFragmentProcessor* CreateGaussian(GrTexture* tex,
                                                Direction dir,
                                                int halfWidth,
                                                float gaussianSigma,
                                                bool useBounds,
-                                               float bounds[2]) {
-        return new GrConvolutionEffect(tex, dir, halfWidth, gaussianSigma, useBounds, bounds);
+                                               float bounds[2], GrRenderTarget* dst) {
+        return new GrConvolutionEffect(tex, dir, halfWidth, gaussianSigma,
+                                       useBounds, bounds, dst);
     }
 
     virtual ~GrConvolutionEffect();
 
     const float* kernel() const { return fKernel; }
 
     const float* bounds() const { return fBounds; }
     bool useBounds() const { return fUseBounds; }
 
     const char* name() const override { return "Convolution"; }
@@ skipping 13 matching lines @@
 
     float fKernel[kMaxKernelWidth];
     bool fUseBounds;
     float fBounds[2];
 
 private:
     GrConvolutionEffect(GrTexture*, Direction,
                         int halfWidth,
                         const float* kernel,
                         bool useBounds,
-                        float bounds[2]);
+                        float bounds[2], GrRenderTarget* dst);
 
     /// Convolve with a Gaussian kernel
     GrConvolutionEffect(GrTexture*, Direction,
                         int halfWidth,
                         float gaussianSigma,
                         bool useBounds,
-                        float bounds[2]);
+                        float bounds[2], GrRenderTarget* dst);
 
     GrGLFragmentProcessor* onCreateGLInstance() const override;
 
     void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
 
     bool onIsEqual(const GrFragmentProcessor&) const override;
 
     void onComputeInvariantOutput(GrInvariantOutput* inout) const override {
         // If the texture was opaque we could know that the output color if we knew the sum of the
         // kernel values.
         inout->mulByUnknownFourComponents();
     }
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     typedef Gr1DKernelEffect INHERITED;
 };
 
 #endif