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Prevent crash when drawing an image out of mounts on a pixel grid

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This commit is contained in:
Simon Robertshaw 2012-07-27 20:53:09 +01:00
parent 5befe5c25f
commit b612c076eb
1 changed files with 3 additions and 2 deletions
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5
src/graphics/RasterDrawMethods.inl
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@ -329,8 +329,9 @@ void PIXELMETHODS_CLASS::clearrect(int x, int y, int w, int h)
void PIXELMETHODS_CLASS::draw_image(pixel *img, int x, int y, int w, int h, int a) void PIXELMETHODS_CLASS::draw_image(pixel *img, int x, int y, int w, int h, int a)
{ {
int i, j, r, g, b; int i, j, r, g, b;
if (!img || y >= VIDYRES) return; if (!img) return;
if(y + h > VIDYRES) h = (VIDYRES)-y; //Adjust height to prevent drawing off the bottom if(y + h > VIDYRES) h = ((VIDYRES)-y)-1; //Adjust height to prevent drawing off the bottom
if(!h || y < 0) return;
if(a >= 255) if(a >= 255)
for (j=0; j<h; j++) for (j=0; j<h; j++)
for (i=0; i<w; i++) for (i=0; i<w; i++)