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Added better safety in vertex/weight paint, so it survives painting outside

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the window edge. Also did a paranoia larger memory allocation... weird
reports I got.
This commit is contained in:
Ton Roosendaal
2006-02-02 21:52:35 +00:00
parent 4249bce1bf
commit b43ddb4dec
1 changed files with 8 additions and 5 deletions
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13
source/blender/src/vpaint.c
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@@ -606,16 +606,19 @@ static int sample_backbuf_area(int x, int y, float size)
x1= x-size;
x2= x+size;
CLAMP(x1, 0, curarea->winx);
CLAMP(x2, 0, curarea->winx);
CLAMP(x1, 0, curarea->winx-1);
CLAMP(x2, 0, curarea->winx-1);
y1= y-size;
y2= y+size;
CLAMP(y1, 0, curarea->winy);
CLAMP(y2, 0, curarea->winy);
CLAMP(y1, 0, curarea->winy-1);
CLAMP(y2, 0, curarea->winy-1);
#ifdef __APPLE__
glReadBuffer(GL_AUX0);
#endif
ibuf = IMB_allocImBuf(2*size + 1, 2*size + 1, 32, IB_rect, 0);
if(x1>=x2 || y1>=y2) return 0;
ibuf = IMB_allocImBuf(2*size + 4, 2*size + 4, 32, IB_rect, 0);
glReadPixels(x1+curarea->winrct.xmin, y1+curarea->winrct.ymin, x2-x1+1, y2-y1+1, GL_RGBA, GL_UNSIGNED_BYTE, ibuf->rect);
glReadBuffer(GL_BACK);