Zebediah Figura : vkd3d-shader/hlsl: Allow VPOS and VFACE to be specified in sm3 pixel shaders.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: 0654d88edd53b0721e071084004eb42619cbd6fa
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/0654d88edd53b0721e071084004eb4...

Author: Zebediah Figura 
Date:   Fri Feb 24 13:11:06 2023 -0600

vkd3d-shader/hlsl: Allow VPOS and VFACE to be specified in sm3 pixel shaders.

We were previously (accidentally) rejecting them because they didn't have a
usage.

---

libs/vkd3d-shader/hlsl_codegen.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/libs/vkd3d-shader/hlsl_codegen.c b/libs/vkd3d-shader/hlsl_codegen.c
index c8130a3f..adaf8201 100644
--- a/libs/vkd3d-shader/hlsl_codegen.c
+++ b/libs/vkd3d-shader/hlsl_codegen.c
@@ -2921,7 +2921,8 @@ static void allocate_semantic_register(struct hlsl_ctx *ctx, struct hlsl_ir_var
         D3DDECLUSAGE usage;
         uint32_t usage_idx;

-        if (!hlsl_sm1_usage_from_semantic(&var->semantic, &usage, &usage_idx))
+        builtin = hlsl_sm1_register_from_semantic(ctx, &var->semantic, output, &type, &reg);
+        if (!builtin && !hlsl_sm1_usage_from_semantic(&var->semantic, &usage, &usage_idx))
         {
             hlsl_error(ctx, &var->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_SEMANTIC,
                     "Invalid semantic '%s'.", var->semantic.name);
@@ -2930,8 +2931,6 @@ static void allocate_semantic_register(struct hlsl_ctx *ctx, struct hlsl_ir_var

if ((!output && !var->last_read) || (output && !var->first_write))
             return;
-
-        builtin = hlsl_sm1_register_from_semantic(ctx, &var->semantic, output, &type, &reg);
     }
     else
     {