speedup for fast gauss blue (approx 10% - 15%)

- get the image width and height once rather then calculating on every access (was doing min/max subtract).
- use unsigned int's - faster for looping.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/compositor/operations/COM_FastGaussianBlurOperation.h b/source/blender/compositor/operations/COM_FastGaussianBlurOperation.h
index f92e3dc68a5..0f3929f052c 100644
--- a/source/blender/compositor/operations/COM_FastGaussianBlurOperation.h
+++ b/source/blender/compositor/operations/COM_FastGaussianBlurOperation.h
@@ -36,7 +36,7 @@ public:
 	bool determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output);
 	void executePixel(float *color, int x, int y, MemoryBuffer * inputBuffers[], void *data);
 	
-	static void IIR_gauss(MemoryBuffer *src, float sigma, int channel, int xy);
+	static void IIR_gauss(MemoryBuffer *src, float sigma, unsigned int channel, unsigned int xy);
 	void *initializeTileData(rcti *rect, MemoryBuffer **memoryBuffers);
 	void deinitExecution();
 	void initExecution();