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radv/llvm: fix exporting the viewport index if the fragment shader needs it

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It's like the layer, it has to be exported via the pos and also
as a varying if the fragment shader reads it.

Fixes dEQP-VK.draw.shader_viewport_index.fragment_shader_*

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4564>
This commit is contained in:
Samuel Pitoiset 2020-04-15 08:37:40 +02:00 • committed by Marge Bot
parent 19aa68ae31
commit b424d49ac0
1 changed files with 1 additions and 0 deletions
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src/amd/vulkan/radv_nir_to_llvm.c
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@ -1772,6 +1772,7 @@ radv_build_param_exports(struct radv_shader_context *ctx,
if (slot_name != VARYING_SLOT_LAYER &&
slot_name != VARYING_SLOT_PRIMITIVE_ID &&
slot_name != VARYING_SLOT_VIEWPORT &&
slot_name != VARYING_SLOT_CLIP_DIST0 &&
slot_name != VARYING_SLOT_CLIP_DIST1 &&
slot_name < VARYING_SLOT_VAR0)