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vkd3d-shader/hlsl: Make pre/post decrement generate a signed one.

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If a float expression is pre/post decremented and an unsigned one is
used to execute it, the unsigned one is first negated (becoming 2^32-1)
and then casted to float (becoming 2^32), which leads to an incorrect
result.

Signed-off-by: Giovanni Mascellani <gmascellani@codeweavers.com>
Signed-off-by: Zebediah Figura <zfigura@codeweavers.com>
Signed-off-by: Matteo Bruni <mbruni@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Giovanni Mascellani
2021-12-01 17:15:00 +01:00
committed by Alexandre Julliard
parent c64627313f
commit 0e45838370
4 changed files with 15 additions and 2 deletions
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2
libs/vkd3d-shader/hlsl.h
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@@ -701,6 +701,8 @@ struct hlsl_ir_expr *hlsl_new_copy(struct hlsl_ctx *ctx, struct hlsl_ir_node *no
struct hlsl_ir_function_decl *hlsl_new_func_decl(struct hlsl_ctx *ctx, struct hlsl_type *return_type,
struct list *parameters, const struct hlsl_semantic *semantic, struct vkd3d_shader_location loc);
struct hlsl_ir_if *hlsl_new_if(struct hlsl_ctx *ctx, struct hlsl_ir_node *condition, struct vkd3d_shader_location loc);
struct hlsl_ir_constant *hlsl_new_int_constant(struct hlsl_ctx *ctx, int n,
const struct vkd3d_shader_location loc);
struct hlsl_ir_jump *hlsl_new_jump(struct hlsl_ctx *ctx, enum hlsl_ir_jump_type type, struct vkd3d_shader_location loc);
struct hlsl_ir_load *hlsl_new_load(struct hlsl_ctx *ctx, struct hlsl_ir_var *var, struct hlsl_ir_node *offset,
struct hlsl_type *type, struct vkd3d_shader_location loc);