gallium/util: do not perform n^2 stencil blits

We already loop n times here, no point in doing n instances as well.

Fixes: e8a40715a8b ("gallium/util: add blitter-support for stencil-fallback")
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8301>

diff --git a/src/gallium/auxiliary/util/u_blitter.c b/src/gallium/auxiliary/util/u_blitter.c
index 77d2e34..eefe69b 100644 (file)
--- a/src/gallium/auxiliary/util/u_blitter.c
+++ b/src/gallium/auxiliary/util/u_blitter.c
@@ -2918,7 +2918,7 @@ util_blitter_stencil_fallback(struct blitter_context *blitter,
                               dstbox->x, dstbox->y,
                               dstbox->x + dstbox->width,
                               dstbox->y + dstbox->height,
-                              0, stencil_bits,
+                              0, 1,
                               UTIL_BLITTER_ATTRIB_TEXCOORD_XYZW,
                               &coord);
    }