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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>
This commit is contained in:
Marek Olšák 2015-07-30 17:38:44 +02:00
parent 64d3130994
commit 3050978864
1 changed files with 3 additions and 1 deletions
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4
src/gallium/drivers/radeonsi/si_blit.c
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@ -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;