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-rw-r--r--src/til_fb.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/src/til_fb.h b/src/til_fb.h
index d346bd7..9daef63 100644
--- a/src/til_fb.h
+++ b/src/til_fb.h
@@ -137,10 +137,10 @@ static inline int til_fb_fragment_put_pixel_checked(til_fb_fragment_t *fragment,
/* copy a fragment, x,y,width,height are absolute coordinates within the frames, and will be clipped to the overlapping fragment areas */
static inline void til_fb_fragment_copy(til_fb_fragment_t *dest, uint32_t flags, int x, int y, int width, int height, til_fb_fragment_t *src)
{
- int X = MAX(dest->x, src->x);
- int Y = MAX(dest->y, src->y);
- int W = MIN(dest->x + dest->width, src->x + src->width) - X;
- int H = MIN(dest->y + dest->height, src->y + src->height) - Y;
+ int X = MAX(MAX(dest->x, src->x), x);
+ int Y = MAX(MAX(dest->y, src->y), y);
+ int W = MIN(MIN(dest->x + dest->width, src->x + src->width), x + width) - X;
+ int H = MIN(MIN(dest->y + dest->height, src->y + src->height), y + height) - Y;
assert(W >= 0 && H >= 0);
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