Module: Mesa
Branch: main
Commit: 2132f95de0b0f291b116a67149793eaac2e2b5bf
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=2132f95de0b0f291b116a67149793eaac2e2b5bf

Author: Rob Clark <[email protected]>
Date:   Fri Dec  8 11:30:44 2023 -0800

freedreno/a6xx: Fix NV12+UBWC import

Treat R8_G8B8_420_UNORM and NV12 the same, because dri2 frontend doesn't
understand or care about the difference from the sampler PoV.

Fixes: 1e820ac12850 ("freedreno: Rework supported-modifiers handling")
Signed-off-by: Rob Clark <[email protected]>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26601>

---

 src/gallium/drivers/freedreno/a6xx/fd6_resource.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/gallium/drivers/freedreno/a6xx/fd6_resource.cc 
b/src/gallium/drivers/freedreno/a6xx/fd6_resource.cc
index 539aa707321..b0a8b40a1b7 100644
--- a/src/gallium/drivers/freedreno/a6xx/fd6_resource.cc
+++ b/src/gallium/drivers/freedreno/a6xx/fd6_resource.cc
@@ -55,6 +55,13 @@ ok_ubwc_format(struct pipe_screen *pscreen, enum pipe_format 
pfmt)
       return info->a6xx.has_z24uint_s8uint;
 
    case PIPE_FORMAT_R8_G8B8_420_UNORM:
+      /* The difference between NV12 and R8_G8B8_420_UNORM is only where the
+       * conversion to RGB happens, with the latter it happens _after_ the
+       * texture samp instruction.  But dri2_get_mapping_by_fourcc() doesn't
+       * know this, so it asks for NV12 when it really meant to ask for
+       * R8_G8B8_420_UNORM.  Just treat them the same here to work around it:
+       */
+   case PIPE_FORMAT_NV12:
       return true;
 
    default:

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