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llvmpipe: avoid left-shifting a negative number. 

Reviewed-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Maya Rashish <coypu@sdf.org>
This commit is contained in:
Maya Rashish 2019-09-03 13:04:15 +03:00 committed by Matt Turner
parent 962aca1910
commit e0d89b90d4
3 changed files with 6 additions and 6 deletions
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4
src/gallium/drivers/llvmpipe/lp_setup_line.c
View File

@ -724,7 +724,7 @@ try_setup_line( struct lp_setup_context *setup,
struct lp_rast_plane *plane_s = &plane[4];
if (s_planes[0]) {
plane_s->dcdx = -1 << 8;
plane_s->dcdx = ~0U << 8;
plane_s->dcdy = 0;
plane_s->c = (1-scissor->x0) << 8;
plane_s->eo = 1 << 8;
@ -746,7 +746,7 @@ try_setup_line( struct lp_setup_context *setup,
}
if (s_planes[3]) {
plane_s->dcdx = 0;
plane_s->dcdy = -1 << 8;
plane_s->dcdy = ~0U << 8;
plane_s->c = (scissor->y1+1) << 8;
plane_s->eo = 0;
plane_s++;

4
src/gallium/drivers/llvmpipe/lp_setup_point.c
View File

@ -491,7 +491,7 @@ try_setup_point( struct lp_setup_context *setup,
{
struct lp_rast_plane *plane = GET_PLANES(point);
plane[0].dcdx = -1 << 8;
plane[0].dcdx = ~0U << 8;
plane[0].dcdy = 0;
plane[0].c = (1-bbox.x0) << 8;
plane[0].eo = 1 << 8;
@ -507,7 +507,7 @@ try_setup_point( struct lp_setup_context *setup,
plane[2].eo = 1 << 8;
plane[3].dcdx = 0;
plane[3].dcdy = -1 << 8;
plane[3].dcdy = ~0U << 8;
plane[3].c = (bbox.y1+1) << 8;
plane[3].eo = 0;
}

4
src/gallium/drivers/llvmpipe/lp_setup_tri.c
View File

@ -687,7 +687,7 @@ do_triangle_ccw(struct lp_setup_context *setup,
struct lp_rast_plane *plane_s = &plane[3];
if (s_planes[0]) {
plane_s->dcdx = -1 << 8;
plane_s->dcdx = ~0U << 8;
plane_s->dcdy = 0;
plane_s->c = (1-scissor->x0) << 8;
plane_s->eo = 1 << 8;
@ -709,7 +709,7 @@ do_triangle_ccw(struct lp_setup_context *setup,
}
if (s_planes[3]) {
plane_s->dcdx = 0;
plane_s->dcdy = -1 << 8;
plane_s->dcdy = ~0U << 8;
plane_s->c = (scissor->y1+1) << 8;
plane_s->eo = 0;
plane_s++;