skia2/include/effects/SkGaussianEdgeShader.h
jvanverth d99858ad46 Update SampleAndroidShadows to use algorithm closer to Android OpenGL
Includes:
* Update light position to be at a similar distance to Android OS
* Scale spot shadows correctly
* Compute stroke shapes and radii correctly
* Allow for larger blur radius for shadows

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2319003003
TBR=reed@google.com
NOTRY=true
NOTREECHECKS=true

Review-Url: https://codereview.chromium.org/2319003003
2016-09-12 07:51:05 -07:00

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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.
*/
#ifndef SkGaussianEdgeShader_DEFINED
#define SkGaussianEdgeShader_DEFINED
#include "SkShader.h"
class SK_API SkGaussianEdgeShader {
public:
/** Returns a shader that applies a Gaussian blur depending on distance to the edge
* Currently this is only useable with Circle and RRect shapes on the GPU backend.
* Raster will draw nothing.
*/
static sk_sp<SkShader> Make(bool largerBlur = false);
SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP()
private:
SkGaussianEdgeShader(); // can't be instantiated
};
#endif