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Prevent clearrect wrapping round at the edge of the screen

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jacksonmj
2014-04-05 18:20:30 +01:00
parent 11997cf3ad
commit afacecffd9
1 changed files with 24 additions and 2 deletions
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26
src/graphics/RasterDrawMethods.inl
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@@ -418,8 +418,30 @@ void PIXELMETHODS_CLASS::gradientrect(int x, int y, int width, int height, int r
void PIXELMETHODS_CLASS::clearrect(int x, int y, int w, int h) void PIXELMETHODS_CLASS::clearrect(int x, int y, int w, int h)
{ {
int i; int i;
for (i=1; i<h; i++)
memset(vid+(x+1+(VIDXRES)*(y+i)), 0, PIXELSIZE*(w-1)); // TODO: change calls to clearrect to use sensible meanings of x, y, w, h then remove these 4 lines
x += 1;
y += 1;
w -= 1;
h -= 1;
if (x+w > VIDXRES) w = VIDXRES-x;
if (y+h > VIDYRES) h = VIDYRES-y;
if (x<0)
{
w += x;
x = 0;
}
if (y<0)
{
h += y;
y = 0;
}
if (w<0 || h<0)
return;
for (i=0; i<h; i++)
memset(vid+(x+(VIDXRES)*(y+i)), 0, PIXELSIZE*w);
} }
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)