=?UTF-8?Q?J=C3=B3zef=20Kucia=20?=: vkd3d-shader: Improve asserts for write mask component count.
Alexandre Julliard
julliard at winehq.org
Wed May 1 15:58:16 CDT 2019
Module: vkd3d
Branch: master
Commit: de3423e98e82fb39ea4860bbb42a1e21d1b7fb9c
URL: https://source.winehq.org/git/vkd3d.git/?a=commit;h=de3423e98e82fb39ea4860bbb42a1e21d1b7fb9c
Author: Józef Kucia <jkucia at codeweavers.com>
Date: Tue Apr 30 14:33:47 2019 +0200
vkd3d-shader: Improve asserts for write mask component count.
Helps Clang Static Analyzer.
Signed-off-by: Józef Kucia <jkucia at codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
---
libs/vkd3d-shader/vkd3d_shader_private.h | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/libs/vkd3d-shader/vkd3d_shader_private.h b/libs/vkd3d-shader/vkd3d_shader_private.h
index 73ba93f..54d0705 100644
--- a/libs/vkd3d-shader/vkd3d_shader_private.h
+++ b/libs/vkd3d-shader/vkd3d_shader_private.h
@@ -883,13 +883,14 @@ static inline unsigned int vkd3d_write_mask_get_component_idx(DWORD write_mask)
static inline unsigned int vkd3d_write_mask_component_count(DWORD write_mask)
{
- assert(write_mask);
- return vkd3d_popcount(write_mask & VKD3DSP_WRITEMASK_ALL);
+ unsigned int count = vkd3d_popcount(write_mask & VKD3DSP_WRITEMASK_ALL);
+ assert(1 <= count && count <= VKD3D_VEC4_SIZE);
+ return count;
}
static inline unsigned int vkd3d_write_mask_from_component_count(unsigned int component_count)
{
- assert(component_count <= 4);
+ assert(component_count <= VKD3D_VEC4_SIZE);
return (VKD3DSP_WRITEMASK_0 << component_count) - 1;
}
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