Module: Mesa
Branch: master
Commit: 30509788641a413742098f21a4ee0087b1f86e18
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=30509788641a413742098f21a4ee0087b1f86e18

Author: Marek Olšák <[email protected]>
Date:   Thu Jul 30 17:38:44 2015 +0200

radeonsi: copy *8_SNORM bits exactly in resource_copy_region

Disabling the FP16 mode didn't help.

If needed, we can use this trick for blits too, but not for scaled blits.

+ 4 piglits

Reviewed-by: Michel Dänzer <[email protected]>

---

 src/gallium/drivers/radeonsi/si_blit.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/radeonsi/si_blit.c 
b/src/gallium/drivers/radeonsi/si_blit.c
index c892623..61ca2a8 100644
--- a/src/gallium/drivers/radeonsi/si_blit.c
+++ b/src/gallium/drivers/radeonsi/si_blit.c
@@ -522,7 +522,9 @@ void si_resource_copy_region(struct pipe_context *ctx,
                src_box = &sbox;
 
                src_force_level = src_level;
-       } else if (!util_blitter_is_copy_supported(sctx->blitter, dst, src)) {
+       } else if (!util_blitter_is_copy_supported(sctx->blitter, dst, src) ||
+                  /* also *8_SNORM has precision issues, use UNORM instead */
+                  util_format_is_snorm(src->format)) {
                if (util_format_is_subsampled_422(src->format)) {
                        src_templ.format = PIPE_FORMAT_R8G8B8A8_UINT;
                        dst_templ.format = PIPE_FORMAT_R8G8B8A8_UINT;

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