Zebediah Figura : vkd3d-shader: Fold constant casts from uint to float.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: 56bf11d813d97e09bd241bf1055df6dd3096db70
URL:    https://source.winehq.org/git/vkd3d.git/?a=commit;h=56bf11d813d97e09bd241bf1055df6dd3096db70

Author: Zebediah Figura <zfigura at codeweavers.com>
Date:   Mon May 31 21:41:11 2021 -0500

vkd3d-shader: Fold constant casts from uint to float.

Signed-off-by: Zebediah Figura <zfigura at codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet at codeweavers.com>
Signed-off-by: Matteo Bruni <mbruni at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 libs/vkd3d-shader/hlsl_codegen.c | 42 +++++++++++++++++++++++++++++++++++++---
 1 file changed, 39 insertions(+), 3 deletions(-)

diff --git a/libs/vkd3d-shader/hlsl_codegen.c b/libs/vkd3d-shader/hlsl_codegen.c
index 7395772..aa1b8d5 100644
--- a/libs/vkd3d-shader/hlsl_codegen.c
+++ b/libs/vkd3d-shader/hlsl_codegen.c
@@ -332,7 +332,7 @@ static bool fold_constants(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, voi
 {
     struct hlsl_ir_constant *arg1, *arg2 = NULL, *res;
     struct hlsl_ir_expr *expr;
-    unsigned int i;
+    unsigned int i, dimx;
 
     if (instr->type != HLSL_IR_EXPR)
         return false;
@@ -346,6 +346,7 @@ static bool fold_constants(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, voi
     arg1 = hlsl_ir_constant(expr->operands[0].node);
     if (expr->operands[1].node)
         arg2 = hlsl_ir_constant(expr->operands[1].node);
+    dimx = instr->data_type->dimx;
 
     if (!(res = hlsl_alloc(ctx, sizeof(*res))))
         return false;
@@ -353,10 +354,45 @@ static bool fold_constants(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, voi
 
     switch (instr->data_type->base_type)
     {
-        case HLSL_TYPE_UINT:
+        case HLSL_TYPE_FLOAT:
         {
-            unsigned int i;
+            switch (expr->op)
+            {
+                case HLSL_IR_UNOP_CAST:
+                    if (instr->data_type->dimx != arg1->node.data_type->dimx
+                            || instr->data_type->dimy != arg1->node.data_type->dimy)
+                    {
+                        FIXME("Cast from %s to %s.\n", debug_hlsl_type(ctx, arg1->node.data_type),
+                                debug_hlsl_type(ctx, instr->data_type));
+                        vkd3d_free(res);
+                        return false;
+                    }
 
+                    switch (arg1->node.data_type->base_type)
+                    {
+                        case HLSL_TYPE_UINT:
+                            for (i = 0; i < dimx; ++i)
+                                res->value.f[i] = arg1->value.u[i];
+                            break;
+
+                        default:
+                            FIXME("Cast from %s to %s.\n", debug_hlsl_type(ctx, arg1->node.data_type),
+                                    debug_hlsl_type(ctx, instr->data_type));
+                            vkd3d_free(res);
+                            return false;
+                    }
+                    break;
+
+                default:
+                    FIXME("Fold float op %#x.\n", expr->op);
+                    vkd3d_free(res);
+                    return false;
+            }
+            break;
+        }
+
+        case HLSL_TYPE_UINT:
+        {
             switch (expr->op)
             {
                 case HLSL_IR_BINOP_ADD: