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vkd3d-shader: Improve asserts for write mask component count.

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Helps Clang Static Analyzer.

Signed-off-by: Józef Kucia <jkucia@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Józef Kucia 2019-04-30 14:33:47 +02:00 committed by Alexandre Julliard
parent 2faae71f5a
commit de3423e98e
1 changed files with 4 additions and 3 deletions
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7
libs/vkd3d-shader/vkd3d_shader_private.h
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@ -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;
}