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vkd3d-shader: Check more accurately if swizzle is required.

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Eliminates redundant OpVectorShuffle instructions.

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
2018-10-31 15:26:46 +01:00
committed by Alexandre Julliard
parent f97b745ae7
commit 11a65da62a
2 changed files with 21 additions and 3 deletions
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16
libs/vkd3d-shader/vkd3d_shader_private.h
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@@ -882,6 +882,22 @@ static inline unsigned int vkd3d_swizzle_get_component(DWORD swizzle,
return (swizzle >> VKD3D_SWIZZLE_SHIFT(idx)) & VKD3D_SWIZZLE_MASK;
}
static inline unsigned int vkd3d_compact_swizzle(unsigned int swizzle, unsigned int write_mask)
{
unsigned int i, compacted_swizzle = 0;
for (i = 0; i < VKD3D_VEC4_SIZE; ++i)
{
if (write_mask & (VKD3DSP_WRITEMASK_0 << i))
{
compacted_swizzle <<= VKD3D_SWIZZLE_SHIFT(1);
compacted_swizzle |= vkd3d_swizzle_get_component(swizzle, i);
}
}
return compacted_swizzle;
}
#define VKD3D_DXBC_MAX_SOURCE_COUNT 6
#define VKD3D_DXBC_HEADER_SIZE (8 * sizeof(uint32_t))