diff options
| -rw-r--r-- | src/gallium/drivers/llvmpipe/lp_setup_line.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_setup_line.c b/src/gallium/drivers/llvmpipe/lp_setup_line.c index 9f090d1992e..829eb8a5a04 100644 --- a/src/gallium/drivers/llvmpipe/lp_setup_line.c +++ b/src/gallium/drivers/llvmpipe/lp_setup_line.c @@ -292,6 +292,7 @@ try_setup_line( struct lp_setup_context *setup, float x2diff; float y2diff; float dx, dy; + float area; boolean draw_start; boolean draw_end; @@ -311,6 +312,18 @@ try_setup_line( struct lp_setup_context *setup, dx = v1[0][0] - v2[0][0]; dy = v1[0][1] - v2[0][1]; + area = (dx * dx + dy * dy); + if (area == 0) { + LP_COUNT(nr_culled_tris); + return TRUE; + } + + info.oneoverarea = 1.0f / area; + info.dx = dx; + info.dy = dy; + info.v1 = v1; + info.v2 = v2; + /* X-MAJOR LINE */ if (fabsf(dx) >= fabsf(dy)) { @@ -573,12 +586,6 @@ try_setup_line( struct lp_setup_context *setup, line->plane[3].dcdx = y[3] - y[0]; - info.oneoverarea = 1.0f / (dx * dx + dy * dy); - info.dx = dx; - info.dy = dy; - info.v1 = v1; - info.v2 = v2; - /* Setup parameter interpolants: */ setup_line_coefficients( setup, line, &info); |