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st/mesa: Add NV12 lowering to PIPE_FORMAT_R8_G8B8_420_UNORM

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Some GPUs can sample biplanar formats like NV12 natively, returning
the YUV values. Add a lowering type that uses that for sampling and
relies on existing colorspace conversions.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6693>
This commit is contained in:
Kristian H. Kristensen
2020-09-28 20:11:18 +00:00
committed by Marge Bot
parent e23bcb69c3
commit 826a10255f
9 changed files with 92 additions and 5 deletions
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4
src/mesa/state_tracker/st_atom_sampler.c
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@@ -315,6 +315,10 @@ update_shader_samplers(struct st_context *st,
switch (st_get_view_format(stObj)) {
case PIPE_FORMAT_NV12:
if (stObj->pt->format == PIPE_FORMAT_R8_G8B8_420_UNORM)
/* no additional views needed */
break;
/* fallthrough */
case PIPE_FORMAT_P010:
case PIPE_FORMAT_P012:
case PIPE_FORMAT_P016: