Commit | Line | Data |
---|---|---|
7217e0ca ML |
1 | diff --git a/exa/exa_render.c b/exa/exa_render.c |
2 | index 172e2b5..807eeba 100644 | |
3 | --- a/exa/exa_render.c | |
4 | +++ b/exa/exa_render.c | |
5 | @@ -1141,7 +1141,8 @@ exaTrapezoids(CARD8 op, PicturePtr pSrc, PicturePtr pDst, | |
6 | ||
7 | exaPrepareAccess(pPicture->pDrawable, EXA_PREPARE_DEST); | |
8 | for (; ntrap; ntrap--, traps++) | |
9 | - (*ps->RasterizeTrapezoid) (pPicture, traps, -bounds.x1, -bounds.y1); | |
10 | + if (xTrapezoidValid(traps)) | |
11 | + (*ps->RasterizeTrapezoid) (pPicture, traps, -bounds.x1, -bounds.y1); | |
12 | exaFinishAccess(pPicture->pDrawable, EXA_PREPARE_DEST); | |
13 | ||
14 | xRel = bounds.x1 + xSrc - xDst; | |
15 | diff --git a/render/picture.h b/render/picture.h | |
16 | index c85353a..49eb263 100644 | |
17 | --- a/render/picture.h | |
18 | +++ b/render/picture.h | |
19 | @@ -211,7 +211,7 @@ typedef pixman_fixed_t xFixed; | |
20 | /* whether 't' is a well defined not obviously empty trapezoid */ | |
21 | #define xTrapezoidValid(t) ((t)->left.p1.y != (t)->left.p2.y && \ | |
22 | (t)->right.p1.y != (t)->right.p2.y && \ | |
23 | - (int) ((t)->bottom - (t)->top) > 0) | |
24 | + (t)->bottom > 0 && (int) ((t)->bottom - (t)->top) > 0) | |
25 | ||
26 | /* | |
27 | * Standard NTSC luminance conversions: |