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fix naive blur

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This commit is contained in:
Chris Guillott 2017-12-06 14:20:04 -05:00
parent 2040285ce9
commit 29251d61cd
1 changed files with 8 additions and 3 deletions
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11
blur.c
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@ -96,9 +96,10 @@ blur_image_surface (cairo_surface_t *surface, int sigma)
}
void blur_impl_horizontal_pass_generic(uint32_t *src, uint32_t *dst, int width, int height) {
uint32_t *o_src = src;
for (int row = 0; row < height; row++) {
for (int column = 0; column < width; column++, src++) {
uint32_t rgbaIn[KERNEL_SIZE];
uint32_t rgbaIn[KERNEL_SIZE + 1];
// handle borders
int leftBorder = column < HALF_KERNEL;
@ -119,8 +120,12 @@ void blur_impl_horizontal_pass_generic(uint32_t *src, uint32_t *dst, int width,
for (int k = 0; i < KERNEL_SIZE; i++, k++)
rgbaIn[i] = *(src - k);
} else {
for (; i < KERNEL_SIZE; i++)
rgbaIn[i] = *(src + i - HALF_KERNEL);
for (; i < KERNEL_SIZE; i++) {
if ((long long) ((src + 4*i - HALF_KERNEL) + 1)
> (long long) (o_src + (height * width)))
break;
rgbaIn[i] = *(src + i - HALF_KERNEL);
}
}
uint32_t acc[4] = {0};