1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/effects/SkGpuBlurUtils.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,46 @@
1.4 +/*
1.5 + * Copyright 2013 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +#ifndef SkGpuBlurUtils_DEFINED
1.12 +#define SkGpuBlurUtils_DEFINED
1.13 +
1.14 +#if SK_SUPPORT_GPU
1.15 +class GrTexture;
1.16 +class GrContext;
1.17 +#endif
1.18 +
1.19 +struct SkRect;
1.20 +
1.21 +namespace SkGpuBlurUtils {
1.22 +
1.23 +#if SK_SUPPORT_GPU
1.24 + /**
1.25 + * Applies a 2D Gaussian blur to a given texture.
1.26 + * @param context The GPU context
1.27 + * @param srcTexture The source texture to be blurred.
1.28 + * @param canClobberSrc If true, srcTexture may be overwritten, and
1.29 + * may be returned as the result.
1.30 + * @param rect The destination rectangle.
1.31 + * @param cropToRect If true, do not sample any pixels outside the
1.32 + * source rect.
1.33 + * @param sigmaX The blur's standard deviation in X.
1.34 + * @param sigmaY The blur's standard deviation in Y.
1.35 + * @return the blurred texture, which may be srcTexture reffed, or a
1.36 + * new texture. It is the caller's responsibility to unref this texture.
1.37 + */
1.38 + GrTexture* GaussianBlur(GrContext* context,
1.39 + GrTexture* srcTexture,
1.40 + bool canClobberSrc,
1.41 + const SkRect& rect,
1.42 + bool cropToRect,
1.43 + float sigmaX,
1.44 + float sigmaY);
1.45 +#endif
1.46 +
1.47 +};
1.48 +
1.49 +#endif
