[PATCH vkd3d 2/6] vkd3d-shader/hlsl: Respect the 'nointerpolation' modifier.

[Zebediah Figura]

Signed-off-by: Zebediah Figura <zfigura at codeweavers.com>
---
 Makefile.am                      | 1 -
 libs/vkd3d-shader/hlsl_codegen.c | 9 ++++++---
 libs/vkd3d-shader/hlsl_sm4.c     | 9 ++++++++-
 3 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 64cfe5342..8845be374 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -352,7 +352,6 @@ XFAIL_TESTS = \
 	tests/hlsl-vector-indexing-uniform.shader_test \
 	tests/logic-operations.shader_test \
 	tests/max.shader_test \
-	tests/nointerpolation.shader_test \
 	tests/sampler-offset.shader_test \
 	tests/trigonometry.shader_test
 endif
diff --git a/libs/vkd3d-shader/hlsl_codegen.c b/libs/vkd3d-shader/hlsl_codegen.c
index 98be3aebf..a6a574a70 100644
--- a/libs/vkd3d-shader/hlsl_codegen.c
+++ b/libs/vkd3d-shader/hlsl_codegen.c
@@ -34,7 +34,8 @@ static void prepend_uniform_copy(struct hlsl_ctx *ctx, struct list *instrs, stru
     /* Use the synthetic name for the temp, rather than the uniform, so that we
      * can write the uniform name into the shader reflection data. */
 
-    if (!(uniform = hlsl_new_var(ctx, temp->name, temp->data_type, temp->loc, NULL, 0, &temp->reg_reservation)))
+    if (!(uniform = hlsl_new_var(ctx, temp->name, temp->data_type,
+            temp->loc, NULL, temp->modifiers, &temp->reg_reservation)))
         return;
     list_add_before(&temp->scope_entry, &uniform->scope_entry);
     list_add_tail(&ctx->extern_vars, &uniform->extern_entry);
@@ -76,7 +77,8 @@ static void prepend_input_copy(struct hlsl_ctx *ctx, struct list *instrs, struct
         return;
     }
     new_semantic.index = semantic->index;
-    if (!(input = hlsl_new_var(ctx, hlsl_strdup(ctx, name->buffer), type, var->loc, &new_semantic, 0, NULL)))
+    if (!(input = hlsl_new_var(ctx, hlsl_strdup(ctx, name->buffer),
+            type, var->loc, &new_semantic, var->modifiers, NULL)))
     {
         hlsl_release_string_buffer(ctx, name);
         vkd3d_free((void *)new_semantic.name);
@@ -147,7 +149,8 @@ static void append_output_copy(struct hlsl_ctx *ctx, struct list *instrs, struct
         return;
     }
     new_semantic.index = semantic->index;
-    if (!(output = hlsl_new_var(ctx, hlsl_strdup(ctx, name->buffer), type, var->loc, &new_semantic, 0, NULL)))
+    if (!(output = hlsl_new_var(ctx, hlsl_strdup(ctx, name->buffer),
+            type, var->loc, &new_semantic, var->modifiers, NULL)))
     {
         vkd3d_free((void *)new_semantic.name);
         hlsl_release_string_buffer(ctx, name);
diff --git a/libs/vkd3d-shader/hlsl_sm4.c b/libs/vkd3d-shader/hlsl_sm4.c
index ed1f5519d..95ea299cf 100644
--- a/libs/vkd3d-shader/hlsl_sm4.c
+++ b/libs/vkd3d-shader/hlsl_sm4.c
@@ -1203,7 +1203,14 @@ static void write_sm4_dcl_semantic(struct hlsl_ctx *ctx, struct vkd3d_bytecode_b
         }
 
         if (profile->type == VKD3D_SHADER_TYPE_PIXEL)
-            instr.opcode |= VKD3DSIM_LINEAR << VKD3D_SM4_INTERPOLATION_MODE_SHIFT;
+        {
+            enum vkd3d_shader_interpolation_mode mode = VKD3DSIM_LINEAR;
+
+            if (var->modifiers & HLSL_STORAGE_NOINTERPOLATION)
+                mode = VKD3DSIM_CONSTANT;
+
+            instr.opcode |= mode << VKD3D_SM4_INTERPOLATION_MODE_SHIFT;
+        }
     }
     else
     {
-- 
2.35.1