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Diffstat (limited to 'libs/hwui/utils/Blur.h')
| -rw-r--r-- | libs/hwui/utils/Blur.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libs/hwui/utils/Blur.h b/libs/hwui/utils/Blur.h index 79aff65..b145333 100644 --- a/libs/hwui/utils/Blur.h +++ b/libs/hwui/utils/Blur.h @@ -27,8 +27,12 @@ class Blur { public: // If radius > 0, return the corresponding sigma, else return 0 ANDROID_API static float convertRadiusToSigma(float radius); - // If sigma > 0.6, return the corresponding radius, else return 0 + // If sigma > 0.5, return the corresponding radius, else return 0 ANDROID_API static float convertSigmaToRadius(float sigma); + // If the original radius was on an integer boundary then after the sigma to + // radius conversion a small rounding error may be introduced. This function + // accounts for that error and snaps to the appropriate integer boundary. + static uint32_t convertRadiusToInt(float radius); static void generateGaussianWeights(float* weights, int32_t radius); static void horizontal(float* weights, int32_t radius, const uint8_t* source, |