Zebediah Figura : vkd3d-shader/spirv: Retrieve input sysvals from the signature for geometry shaders as well.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: df0a031ad8621d2bfbdebcfe7266bd56abfe73e6
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/df0a031ad8621d2bfbdebcfe7266bd...

Author: Zebediah Figura <zfigura(a)codeweavers.com>
Date:   Fri Jun  9 19:59:11 2023 -0500

vkd3d-shader/spirv: Retrieve input sysvals from the signature for geometry shaders as well.

This only affects clip and cull distances. The HLSL compiler emits these using
dcl_input, but the previous shader (vertex or TES) will write them as a SPIRV
builtin, and hence we want to read this as a SPIRV builtin as well.

This fixes validation errors in Wine's test_clip_distance().

---

 libs/vkd3d-shader/spirv.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libs/vkd3d-shader/spirv.c b/libs/vkd3d-shader/spirv.c
index cc0b63e8..a6700e66 100644
--- a/libs/vkd3d-shader/spirv.c
+++ b/libs/vkd3d-shader/spirv.c
@@ -4479,7 +4479,8 @@ static uint32_t spirv_compiler_emit_input(struct spirv_compiler *compiler,
     element_idx = shader_register_get_io_indices(reg, array_sizes);
     signature_element = &shader_signature->elements[element_idx];
 
-    if (compiler->shader_type == VKD3D_SHADER_TYPE_HULL && !sysval && signature_element->sysval_semantic)
+    if ((compiler->shader_type == VKD3D_SHADER_TYPE_HULL || compiler->shader_type == VKD3D_SHADER_TYPE_GEOMETRY)
+            && !sysval && signature_element->sysval_semantic)
         sysval = vkd3d_siv_from_sysval(signature_element->sysval_semantic);
 
     builtin = get_spirv_builtin_for_sysval(compiler, sysval);