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Validate that image rect drawing is inside the image so we don't overflow a buffer

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This commit is contained in:
Jeff Myers 2023-08-25 16:30:58 -07:00
parent b9a10b5db7
commit 145ae839f1
1 changed files with 14 additions and 0 deletions
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14
src/rtextures.c
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@ -3134,6 +3134,20 @@ void ImageDrawRectangleRec(Image *dst, Rectangle rec, Color color)
if (rec.width < 0) rec.width = 0; if (rec.width < 0) rec.width = 0;
if (rec.height < 0) rec.height = 0; if (rec.height < 0) rec.height = 0;
// clamp the size the the image bounds
if (rec.x + rec.width >= dst->width)
rec.width = dst->width - rec.x;
if (rec.y + rec.height >= dst->height)
rec.height = dst->height - rec.y;
// check if the rect is even inside the image
if (rec.x > dst->width || rec.y > dst->height)
return;
if (rec.x + rec.width < 0 || rec.y + rec.height < 0)
return;
int sy = (int)rec.y; int sy = (int)rec.y;
int sx = (int)rec.x; int sx = (int)rec.x;