diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/gpu/GrContext.h | 64 |
1 files changed, 37 insertions, 27 deletions
diff --git a/include/gpu/GrContext.h b/include/gpu/GrContext.h index 37160b1709..ae0e5652bd 100644 --- a/include/gpu/GrContext.h +++ b/include/gpu/GrContext.h @@ -16,6 +16,7 @@ // remove. #include "GrRenderTarget.h" +class GrAutoScratchTexture; class GrDrawTarget; class GrFontCache; class GrGpu; @@ -577,33 +578,42 @@ public: void resolveRenderTarget(GrRenderTarget* target); /** - * Applies a 1D convolution kernel in the given direction to a rectangle of - * pixels from a given texture. - * @param texture the texture to read from - * @param rect the destination rectangle - * @param kernel the convolution kernel (kernelWidth elements) - * @param kernelWidth the width of the convolution kernel - * @param direction the direction in which to apply the kernel - */ - void convolve(GrTexture* texture, - const SkRect& rect, - const float* kernel, - int kernelWidth, - GrSamplerState::FilterDirection direction); - /** - * Applies a 1D morphology in the given direction to a rectangle of - * pixels from a given texture. - * @param texture the texture to read from - * @param rect the destination rectangle - * @param radius the radius of the morphological operator - * @param filter the filter kernel (must be kDilate or kErode) - * @param direction the direction in which to apply the morphology - */ - void applyMorphology(GrTexture* texture, - const SkRect& rect, - int radius, - GrSamplerState::Filter filter, - GrSamplerState::FilterDirection direction); + * Applies a 2D Gaussian blur to a given texture. + * @param srcTexture The source texture to be blurred. + * @param temp1 A scratch texture. Must not be NULL. + * @param temp2 A scratch texture. May be NULL, in which case + * srcTexture is overwritten with intermediate + * results. + * @param rect The destination rectangle. + * @param sigmaX The blur's standard deviation in X. + * @param sigmaY The blur's standard deviation in Y. + * @return the blurred texture, which may be temp1, temp2 or srcTexture. + */ + GrTexture* gaussianBlur(GrTexture* srcTexture, + GrAutoScratchTexture* temp1, + GrAutoScratchTexture* temp2, + const SkRect& rect, + float sigmaX, float sigmaY); + + /** + * Applies a 2D morphology to a given texture. + * @param srcTexture The source texture to be blurred. + * @param rect The destination rectangle. + * @param temp1 A scratch texture. Must not be NULL. + * @param temp2 A scratch texture. Must not be NULL. + * @param filter The morphology filter. Must be kDilate_Filter or + * kErode_Filter. + * @param radius The morphology radius in X and Y. The filter is + * applied to a fWidth by fHeight rectangle of + * pixels. + * @return the morphed texture, which may be temp1, temp2 or srcTexture. + */ + GrTexture* applyMorphology(GrTexture* srcTexture, + const GrRect& rect, + GrTexture* temp1, GrTexture* temp2, + GrSamplerState::Filter filter, + SkISize radius); + /////////////////////////////////////////////////////////////////////////// // Helpers |