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Optimize window blur calculation.

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This commit is contained in:
Kristian Høgsberg 2008-11-08 23:27:27 -05:00
parent 2f2cfae227
commit 10bdd298b8
4 changed files with 11 additions and 6 deletions
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10
cairo-util.c
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@ -101,13 +101,13 @@ buffer_create_from_cairo_surface(int fd, cairo_surface_t *surface)
}
void
blur_surface(cairo_surface_t *surface)
blur_surface(cairo_surface_t *surface, int margin)
{
cairo_surface_t *tmp;
int32_t width, height, stride, x, y, z, w;
uint8_t *src, *dst;
uint32_t *s, *d, a, p;
int i, j, k, size = 23, half;
int i, j, k, size = 17, half;
uint8_t kernel[100];
double f;
@ -131,6 +131,9 @@ blur_surface(cairo_surface_t *surface)
s = (uint32_t *) (src + i * stride);
d = (uint32_t *) (dst + i * stride);
for (j = 0; j < width; j++) {
if (margin < j && j < width - margin &&
margin < i && i < height - margin)
continue;
x = 0;
y = 0;
z = 0;
@ -153,6 +156,9 @@ blur_surface(cairo_surface_t *surface)
s = (uint32_t *) (dst + i * stride);
d = (uint32_t *) (src + i * stride);
for (j = 0; j < width; j++) {
if (margin <= j && j < width - margin &&
margin <= i && i < height - margin)
continue;
x = 0;
y = 0;
z = 0;