zink: min/max blit region in coverage functions

these regions might not have the coords in the correct order, which will
cause them to fail intersection tests, resulting in clears that are never
applied

cc: mesa-stable

fixes:
GTF-GL46.gtf30.GL3Tests.framebuffer_blit.framebuffer_blit_functionality_all_buffer_blit
GTF-GL46.gtf30.GL3Tests.framebuffer_blit.framebuffer_blit_functionality_color_and_depth_blit
GTF-GL46.gtf30.GL3Tests.framebuffer_blit.framebuffer_blit_functionality_color_and_stencil_blit
GTF-GL46.gtf30.GL3Tests.framebuffer_blit.framebuffer_blit_functionality_linear_filter_color_blit
GTF-GL46.gtf30.GL3Tests.framebuffer_blit.framebuffer_blit_functionality_magnifying_blit
GTF-GL46.gtf30.GL3Tests.framebuffer_blit.framebuffer_blit_functionality_minifying_blit
GTF-GL46.gtf30.GL3Tests.framebuffer_blit.framebuffer_blit_functionality_missing_buffers_blit
GTF-GL46.gtf30.GL3Tests.framebuffer_blit.framebuffer_blit_functionality_nearest_filter_color_blit
GTF-GL46.gtf30.GL3Tests.framebuffer_blit.framebuffer_blit_functionality_negative_dimensions_blit
GTF-GL46.gtf30.GL3Tests.framebuffer_blit.framebuffer_blit_functionality_negative_height_blit
GTF-GL46.gtf30.GL3Tests.framebuffer_blit.framebuffer_blit_functionality_negative_width_blit
GTF-GL46.gtf30.GL3Tests.framebuffer_blit.framebuffer_blit_functionality_scissor_blit

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14867>

diff --git a/src/gallium/drivers/zink/zink_blit.c b/src/gallium/drivers/zink/zink_blit.c
index 6734b56..4d5d63e 100644 (file)
--- a/src/gallium/drivers/zink/zink_blit.c
+++ b/src/gallium/drivers/zink/zink_blit.c
@@ -363,12 +363,18 @@ bool
 zink_blit_region_fills(struct u_rect region, unsigned width, unsigned height)
 {
    struct u_rect intersect = {0, width, 0, height};
-
-   if (!u_rect_test_intersection(&region, &intersect))
+   struct u_rect r = {
+      MIN2(region.x0, region.x1),
+      MAX2(region.x0, region.x1),
+      MIN2(region.y0, region.y1),
+      MAX2(region.y0, region.y1),
+   };
+
+   if (!u_rect_test_intersection(&r, &intersect))
       /* is this even a thing? */
       return false;
 
-   u_rect_find_intersection(&region, &intersect);
+   u_rect_find_intersection(&r, &intersect);
    if (intersect.x0 != 0 || intersect.y0 != 0 ||
        intersect.x1 != width || intersect.y1 != height)
       return false;
@@ -379,11 +385,23 @@ zink_blit_region_fills(struct u_rect region, unsigned width, unsigned height)
 bool
 zink_blit_region_covers(struct u_rect region, struct u_rect covers)
 {
+   struct u_rect r = {
+      MIN2(region.x0, region.x1),
+      MAX2(region.x0, region.x1),
+      MIN2(region.y0, region.y1),
+      MAX2(region.y0, region.y1),
+   };
+   struct u_rect c = {
+      MIN2(covers.x0, covers.x1),
+      MAX2(covers.x0, covers.x1),
+      MIN2(covers.y0, covers.y1),
+      MAX2(covers.y0, covers.y1),
+   };
    struct u_rect intersect;
-   if (!u_rect_test_intersection(&region, &covers))
+   if (!u_rect_test_intersection(&r, &c))
       return false;
 
-    u_rect_union(&intersect, &region, &covers);
-    return intersect.x0 == covers.x0 && intersect.y0 == covers.y0 &&
-           intersect.x1 == covers.x1 && intersect.y1 == covers.y1;
+    u_rect_union(&intersect, &r, &c);
+    return intersect.x0 == c.x0 && intersect.y0 == c.y0 &&
+           intersect.x1 == c.x1 && intersect.y1 == c.y1;
 }