Elizabeth Figura : vkd3d-shader/spirv: Respect VKD3D_SHADER_CONDITIONAL_OP_Z when discard has a bool argument.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: c2ce15b62366967da7b4e139930a415dd8896e36
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/c2ce15b62366967da7b4e139930a41...

Author: Elizabeth Figura <zfigura(a)codeweavers.com>
Date:   Thu Jun 13 12:23:50 2024 -0500

vkd3d-shader/spirv: Respect VKD3D_SHADER_CONDITIONAL_OP_Z when discard has a bool argument.

---

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

diff --git a/libs/vkd3d-shader/spirv.c b/libs/vkd3d-shader/spirv.c
index 92130ff3..215a64a9 100644
--- a/libs/vkd3d-shader/spirv.c
+++ b/libs/vkd3d-shader/spirv.c
@@ -8152,6 +8152,8 @@ static void spirv_compiler_emit_discard(struct spirv_compiler *compiler,
     if (src->reg.data_type != VKD3D_DATA_BOOL)
         condition_id = spirv_compiler_emit_int_to_bool(compiler,
                 instruction->flags, src->reg.data_type, 1, condition_id);
+    else if (instruction->flags & VKD3D_SHADER_CONDITIONAL_OP_Z)
+        condition_id = vkd3d_spirv_build_op_logical_not(builder, vkd3d_spirv_get_op_type_bool(builder), condition_id);
     void_id = vkd3d_spirv_get_op_type_void(builder);
     vkd3d_spirv_build_op_function_call(builder, void_id, spirv_compiler_get_discard_function_id(compiler),
             &condition_id, 1);