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-rw-r--r--gfx.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/gfx.c b/gfx.c
index 4a877328f..aa208b7fc 100644
--- a/gfx.c
+++ b/gfx.c
@@ -115,6 +115,8 @@ void GfxScroll(int left, int top, int width, int height, int xo, int yo) {
void GfxFillRect(int left, int top, int right, int bottom, int color) {
DrawPixelInfo *dpi = _cur_dpi;
byte *dst,*ctab;
+ const int otop = top;
+ const int oleft = left;
if (dpi->zoom != 0)
return;
@@ -159,15 +161,13 @@ void GfxFillRect(int left, int top, int right, int bottom, int color) {
} while (--bottom);
}
} else {
- byte bo = 0;
+ byte bo = (oleft - left + dpi->left + otop - top + dpi->top) & 1;
do {
int i;
- byte b = (bo^=1);
- for(i=0; i!=right;i++)
- if ((b^=1) != 0)
- dst[i] = (byte)color;
+ for (i = (bo ^= 1); i < right; i += 2)
+ dst[i] = (byte)color;
dst += dpi->pitch;
- } while (--bottom);
+ } while (--bottom > 0);
}
}