st/mesa: run st_nir_lower_tex_src_plane for lowered xyuv/ayuv

Has the effect of removing the nir_tex_src_plane for these formats too.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
22 jobs for !1896 with yuyv in 20 minutes and 3 seconds (queued for 4 minutes)
latest detached
Status Job ID Name Coverage
  Containers Build
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debian

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  Build+Test
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meson-arm64

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meson-armhf

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meson-clang

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meson-clover

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meson-i386

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meson-main

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meson-swr-glvnd

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meson-vulkan

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scons-llvm

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scons-nollvm

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scons-swr

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scons-win64

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  Test
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test-llvmpipe-gles2 1/4

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test-llvmpipe-gles2 2/4

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test-llvmpipe-gles2 3/4

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test-llvmpipe-gles2 4/4

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test-softpipe-gles2 1/4

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test-softpipe-gles2 2/4

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test-softpipe-gles2 3/4

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test-softpipe-gles2 4/4

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test-softpipe-gles3-limited

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