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15% of the time in this function was spent dereferencing dst. Go gcc.

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This commit is contained in:
Steve Checkoway
2008-08-11 06:17:35 +00:00
parent 17341f0d16
commit 1e5b8dbd76
1 changed files with 4 additions and 2 deletions
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stepmania/src/RageSurfaceUtils_Zoom.cpp
+4 -2
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@@ -95,7 +95,9 @@ static void ZoomSurface( const RageSurface * src, RageSurface * dst )
/* This is where all of the real work is done. */
const uint8_t *sp = (uint8_t *) src->pixels;
for( int y = 0; y < dst->h; y++ )
const int height = dst->h;
const int width = dst->w;
for( int y = 0; y < height; y++ )
{
uint32_t *dp = (uint32_t *) (dst->pixels + dst->pitch*y);
/* current source pointer and next source pointer (first and second
@@ -103,7 +105,7 @@ static void ZoomSurface( const RageSurface * src, RageSurface * dst )
const uint8_t *csp = sp + esy0[y] * src->pitch;
const uint8_t *ncsp = sp + esy1[y] * src->pitch;
for( int x = 0; x < dst->w; x++ )
for( int x = 0; x < width; x++ )
{
/* Grab pointers to the sampled pixels: */
const uint8_t *c00 = csp + esx0[x]*4;