From: Marek Olšák <marek.olsak@amd.com>
Date: Thu, 30 Jul 2015 15:38:44 +0000 (+0200)
Subject: radeonsi: copy *8_SNORM bits exactly in resource_copy_region
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=30509788641a413742098f21a4ee0087b1f86e18;p=mesa.git

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 <michel.daenzer@amd.com>
---

diff --git a/src/gallium/drivers/radeonsi/si_blit.c b/src/gallium/drivers/radeonsi/si_blit.c
index c8926238940..61ca2a82195 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;