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Optimize blur a bit more.

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This commit is contained in:
Kristian Høgsberg 2008-11-17 22:23:55 -05:00
parent 8c304f6d9a
commit 873302649a
2 changed files with 15 additions and 9 deletions
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19
cairo-util.c
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@ -100,6 +100,8 @@ buffer_create_from_cairo_surface(int fd, cairo_surface_t *surface)
return buffer;
}
#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
void
blur_surface(cairo_surface_t *surface, int margin)
{
@ -107,10 +109,11 @@ blur_surface(cairo_surface_t *surface, int margin)
int32_t width, height, stride, x, y, z, w;
uint8_t *src, *dst;
uint32_t *s, *d, a, p;
int i, j, k, size = 17, half;
uint8_t kernel[100];
int i, j, k, size, half;
uint8_t kernel[10];
double f;
size = ARRAY_LENGTH(kernel);
width = cairo_image_surface_get_width(surface);
height = cairo_image_surface_get_height(surface);
stride = cairo_image_surface_get_stride(surface);
@ -131,9 +134,11 @@ blur_surface(cairo_surface_t *surface, int margin)
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)
if (margin < j && j < width - margin) {
d[j] = s[j];
continue;
}
x = 0;
y = 0;
z = 0;
@ -156,9 +161,11 @@ blur_surface(cairo_surface_t *surface, int margin)
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)
if (margin <= i && i < height - margin) {
d[j] = s[j];
continue;
}
x = 0;
y = 0;
z = 0;