From 742ba084068b6856e94283a9c5fe3b39d48f64cb Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Tue, 16 Jun 2009 15:41:49 -0600 Subject: softpipe: fix out of bounds quad rasterization bug For some triangles we can generate quads which lie just outside the surface bounds. Just check the quad's mask before trying to emit/process the quad. Fixes failed assertion in Lightsmark. --- src/gallium/drivers/softpipe/sp_setup.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'src') diff --git a/src/gallium/drivers/softpipe/sp_setup.c b/src/gallium/drivers/softpipe/sp_setup.c index accc692b66f..e5be65242d6 100644 --- a/src/gallium/drivers/softpipe/sp_setup.c +++ b/src/gallium/drivers/softpipe/sp_setup.c @@ -444,7 +444,8 @@ static void flush_spans( struct setup_context *setup ) mask |= MASK_TOP_RIGHT; if (x+1 >= xleft1 && x+1 < xright1) mask |= MASK_BOTTOM_RIGHT; - EMIT_QUAD( setup, x, setup->span.y, mask ); + if (mask) + EMIT_QUAD( setup, x, setup->span.y, mask ); } break; @@ -458,7 +459,8 @@ static void flush_spans( struct setup_context *setup ) mask |= MASK_TOP_LEFT; if (x+1 >= xleft0 && x+1 < xright0) mask |= MASK_TOP_RIGHT; - EMIT_QUAD( setup, x, setup->span.y, mask ); + if (mask) + EMIT_QUAD( setup, x, setup->span.y, mask ); } break; @@ -472,7 +474,8 @@ static void flush_spans( struct setup_context *setup ) mask |= MASK_BOTTOM_LEFT; if (x+1 >= xleft1 && x+1 < xright1) mask |= MASK_BOTTOM_RIGHT; - EMIT_QUAD( setup, x, setup->span.y, mask ); + if (mask) + EMIT_QUAD( setup, x, setup->span.y, mask ); } break; -- cgit v1.2.3