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-rw-r--r--src/gallium/drivers/llvmpipe/lp_setup_context.h11
-rw-r--r--src/gallium/drivers/llvmpipe/lp_setup_line.c20
-rw-r--r--src/gallium/drivers/llvmpipe/lp_setup_point.c2
-rw-r--r--src/gallium/drivers/llvmpipe/lp_setup_tri.c41
4 files changed, 43 insertions, 31 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_setup_context.h b/src/gallium/drivers/llvmpipe/lp_setup_context.h
index 97146912704..4b55fd922c8 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup_context.h
+++ b/src/gallium/drivers/llvmpipe/lp_setup_context.h
@@ -215,10 +215,11 @@ lp_setup_alloc_triangle(struct lp_scene *scene,
unsigned *tri_size);
boolean
-lp_setup_bin_triangle( struct lp_setup_context *setup,
- struct lp_rast_triangle *tri,
- const struct u_rect *bbox,
- int nr_planes,
- unsigned scissor_index );
+lp_setup_bin_triangle(struct lp_setup_context *setup,
+ struct lp_rast_triangle *tri,
+ const struct u_rect *bboxorig,
+ const struct u_rect *bbox,
+ int nr_planes,
+ unsigned scissor_index);
#endif
diff --git a/src/gallium/drivers/llvmpipe/lp_setup_line.c b/src/gallium/drivers/llvmpipe/lp_setup_line.c
index 018130c3192..d0bac5efb99 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup_line.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup_line.c
@@ -288,7 +288,9 @@ try_setup_line( struct lp_setup_context *setup,
struct lp_rast_plane *plane;
struct lp_line_info info;
float width = MAX2(1.0, setup->line_width);
- struct u_rect bbox;
+ const struct u_rect *scissor;
+ struct u_rect bbox, bboxpos;
+ boolean s_planes[4];
unsigned tri_bytes;
int x[4];
int y[4];
@@ -579,10 +581,12 @@ try_setup_line( struct lp_setup_context *setup,
return TRUE;
}
+ bboxpos = bbox;
+
/* Can safely discard negative regions:
*/
- bbox.x0 = MAX2(bbox.x0, 0);
- bbox.y0 = MAX2(bbox.y0, 0);
+ bboxpos.x0 = MAX2(bboxpos.x0, 0);
+ bboxpos.y0 = MAX2(bboxpos.y0, 0);
nr_planes = 4;
/*
@@ -591,8 +595,8 @@ try_setup_line( struct lp_setup_context *setup,
*/
if (setup->scissor_test) {
/* why not just use draw_regions */
- boolean s_planes[4];
- scissor_planes_needed(s_planes, &bbox, &setup->scissors[viewport_index]);
+ scissor = &setup->scissors[viewport_index];
+ scissor_planes_needed(s_planes, &bboxpos, scissor);
nr_planes += s_planes[0] + s_planes[1] + s_planes[2] + s_planes[3];
}
@@ -718,11 +722,7 @@ try_setup_line( struct lp_setup_context *setup,
* (easier to evaluate) to ordinary planes.)
*/
if (nr_planes > 4) {
- /* why not just use draw_regions */
- const struct u_rect *scissor = &setup->scissors[viewport_index];
struct lp_rast_plane *plane_s = &plane[4];
- boolean s_planes[4];
- scissor_planes_needed(s_planes, &bbox, scissor);
if (s_planes[0]) {
plane_s->dcdx = -1 << 8;
@@ -755,7 +755,7 @@ try_setup_line( struct lp_setup_context *setup,
assert(plane_s == &plane[nr_planes]);
}
- return lp_setup_bin_triangle(setup, line, &bbox, nr_planes, viewport_index);
+ return lp_setup_bin_triangle(setup, line, &bbox, &bboxpos, nr_planes, viewport_index);
}
diff --git a/src/gallium/drivers/llvmpipe/lp_setup_point.c b/src/gallium/drivers/llvmpipe/lp_setup_point.c
index ddb6f0e73b0..8cb6b83f916 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup_point.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup_point.c
@@ -513,7 +513,7 @@ try_setup_point( struct lp_setup_context *setup,
plane[3].eo = 0;
}
- return lp_setup_bin_triangle(setup, point, &bbox, nr_planes, viewport_index);
+ return lp_setup_bin_triangle(setup, point, &bbox, &bbox, nr_planes, viewport_index);
}
diff --git a/src/gallium/drivers/llvmpipe/lp_setup_tri.c b/src/gallium/drivers/llvmpipe/lp_setup_tri.c
index 324e93841f7..39755d6b581 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup_tri.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup_tri.c
@@ -273,7 +273,9 @@ do_triangle_ccw(struct lp_setup_context *setup,
const struct lp_setup_variant_key *key = &setup->setup.variant->key;
struct lp_rast_triangle *tri;
struct lp_rast_plane *plane;
- struct u_rect bbox;
+ const struct u_rect *scissor;
+ struct u_rect bbox, bboxpos;
+ boolean s_planes[4];
unsigned tri_bytes;
int nr_planes = 3;
unsigned viewport_index = 0;
@@ -332,12 +334,14 @@ do_triangle_ccw(struct lp_setup_context *setup,
return TRUE;
}
+ bboxpos = bbox;
+
/* Can safely discard negative regions, but need to keep hold of
* information about when the triangle extends past screen
* boundaries. See trimmed_box in lp_setup_bin_triangle().
*/
- bbox.x0 = MAX2(bbox.x0, 0);
- bbox.y0 = MAX2(bbox.y0, 0);
+ bboxpos.x0 = MAX2(bboxpos.x0, 0);
+ bboxpos.y0 = MAX2(bboxpos.y0, 0);
nr_planes = 3;
/*
@@ -346,8 +350,8 @@ do_triangle_ccw(struct lp_setup_context *setup,
*/
if (setup->scissor_test) {
/* why not just use draw_regions */
- boolean s_planes[4];
- scissor_planes_needed(s_planes, &bbox, &setup->scissors[viewport_index]);
+ scissor = &setup->scissors[viewport_index];
+ scissor_planes_needed(s_planes, &bboxpos, scissor);
nr_planes += s_planes[0] + s_planes[1] + s_planes[2] + s_planes[3];
}
@@ -680,10 +684,7 @@ do_triangle_ccw(struct lp_setup_context *setup,
*/
if (nr_planes > 3) {
/* why not just use draw_regions */
- const struct u_rect *scissor = &setup->scissors[viewport_index];
struct lp_rast_plane *plane_s = &plane[3];
- boolean s_planes[4];
- scissor_planes_needed(s_planes, &bbox, scissor);
if (s_planes[0]) {
plane_s->dcdx = -1 << 8;
@@ -716,7 +717,7 @@ do_triangle_ccw(struct lp_setup_context *setup,
assert(plane_s == &plane[nr_planes]);
}
- return lp_setup_bin_triangle(setup, tri, &bbox, nr_planes, viewport_index);
+ return lp_setup_bin_triangle(setup, tri, &bbox, &bboxpos, nr_planes, viewport_index);
}
/*
@@ -747,11 +748,12 @@ floor_pot(uint32_t n)
boolean
-lp_setup_bin_triangle( struct lp_setup_context *setup,
- struct lp_rast_triangle *tri,
- const struct u_rect *bbox,
- int nr_planes,
- unsigned viewport_index )
+lp_setup_bin_triangle(struct lp_setup_context *setup,
+ struct lp_rast_triangle *tri,
+ const struct u_rect *bboxorig,
+ const struct u_rect *bbox,
+ int nr_planes,
+ unsigned viewport_index)
{
struct lp_scene *scene = setup->scene;
struct u_rect trimmed_box = *bbox;
@@ -767,7 +769,16 @@ lp_setup_bin_triangle( struct lp_setup_context *setup,
int max_sz = ((bbox->x1 - (bbox->x0 & ~3)) |
(bbox->y1 - (bbox->y0 & ~3)));
int sz = floor_pot(max_sz);
- boolean use_32bits = max_sz <= MAX_FIXED_LENGTH32;
+
+ /*
+ * NOTE: It is important to use the original bounding box
+ * which might contain negative values here, because if the
+ * plane math may overflow or not with the 32bit rasterization
+ * functions depends on the original extent of the triangle.
+ */
+ int max_szorig = ((bboxorig->x1 - (bboxorig->x0 & ~3)) |
+ (bboxorig->y1 - (bboxorig->y0 & ~3)));
+ boolean use_32bits = max_szorig <= MAX_FIXED_LENGTH32;
/* Now apply scissor, etc to the bounding box. Could do this
* earlier, but it confuses the logic for tri-16 and would force
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-03 08:44:15 +0000