From e72f8f9a30036d7c1cfc4b81b42765ea3ed328df Mon Sep 17 00:00:00 2001
From: Nikolay Sivov <nsivov@codeweavers.com>
Date: Sat, 11 Nov 2023 01:06:45 +0100
Subject: [PATCH] vkd3d-shader/hlsl: Add passes variables to the techniques.

Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
---
 libs/vkd3d-shader/hlsl.c |  1 +
 libs/vkd3d-shader/hlsl.h |  1 +
 libs/vkd3d-shader/hlsl.y | 27 +++++++++++++++++++++++++++
 3 files changed, 29 insertions(+)

diff --git a/libs/vkd3d-shader/hlsl.c b/libs/vkd3d-shader/hlsl.c
index 6a5a6d0e..a990e021 100644
--- a/libs/vkd3d-shader/hlsl.c
+++ b/libs/vkd3d-shader/hlsl.c
@@ -3366,6 +3366,7 @@ static void declare_predefined_types(struct hlsl_ctx *ctx)
         {"vector",          HLSL_CLASS_VECTOR, HLSL_TYPE_FLOAT,         4, 1},
         {"matrix",          HLSL_CLASS_MATRIX, HLSL_TYPE_FLOAT,         4, 4},
         {"fxgroup",         HLSL_CLASS_OBJECT, HLSL_TYPE_EFFECT_GROUP,  1, 1},
+        {"pass",            HLSL_CLASS_OBJECT, HLSL_TYPE_PASS,          1, 1},
         {"STRING",          HLSL_CLASS_OBJECT, HLSL_TYPE_STRING,        1, 1},
         {"TEXTURE",         HLSL_CLASS_OBJECT, HLSL_TYPE_TEXTURE,       1, 1},
         {"PIXELSHADER",     HLSL_CLASS_OBJECT, HLSL_TYPE_PIXELSHADER,   1, 1},
diff --git a/libs/vkd3d-shader/hlsl.h b/libs/vkd3d-shader/hlsl.h
index bf2f757f..58188ce6 100644
--- a/libs/vkd3d-shader/hlsl.h
+++ b/libs/vkd3d-shader/hlsl.h
@@ -95,6 +95,7 @@ enum hlsl_base_type
     HLSL_TYPE_UAV,
     HLSL_TYPE_PIXELSHADER,
     HLSL_TYPE_VERTEXSHADER,
+    HLSL_TYPE_PASS,
     HLSL_TYPE_TECHNIQUE,
     HLSL_TYPE_EFFECT_GROUP,
     HLSL_TYPE_STRING,
diff --git a/libs/vkd3d-shader/hlsl.y b/libs/vkd3d-shader/hlsl.y
index f33032f5..a132b154 100644
--- a/libs/vkd3d-shader/hlsl.y
+++ b/libs/vkd3d-shader/hlsl.y
@@ -1096,6 +1096,29 @@ static bool add_func_parameter(struct hlsl_ctx *ctx, struct hlsl_func_parameters
     return true;
 }
 
+static bool add_pass(struct hlsl_ctx *ctx, const char *name, const struct vkd3d_shader_location *loc)
+{
+    struct hlsl_ir_var *var;
+    struct hlsl_type *type;
+
+    type = hlsl_get_type(ctx->globals, "pass", false, false);
+    if (!(var = hlsl_new_var(ctx, name, type, loc, NULL, 0, NULL)))
+        return false;
+
+    if (!hlsl_add_var(ctx, var, false))
+    {
+        struct hlsl_ir_var *old = hlsl_get_var(ctx->cur_scope, var->name);
+
+        hlsl_error(ctx, &var->loc, VKD3D_SHADER_ERROR_HLSL_REDEFINED,
+                "Identifier \"%s\" was already declared in this scope.", var->name);
+        hlsl_note(ctx, &old->loc, VKD3D_SHADER_LOG_ERROR, "\"%s\" was previously declared here.", old->name);
+        hlsl_free_var(var);
+        return false;
+    }
+
+    return true;
+}
+
 static bool add_technique(struct hlsl_ctx *ctx, const char *name, struct hlsl_scope *scope,
         const char *typename, const struct vkd3d_shader_location *loc)
 {
@@ -5245,6 +5268,10 @@ name_opt:
 
 pass:
       KW_PASS name_opt '{' '}'
+        {
+            if (!add_pass(ctx, $2, &@1))
+                YYABORT;
+        }
 
 annotations_list:
       variables_def_typed ';'