[WINESYNC] d3dx9: Use BitScanReverse in make_pow2.

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Matteo Bruni <mbruni@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

wine commit id 22970932d014f024fcf7f0f98b1a5384b1b1eb99 by Jacek Caban <jacek@codeweavers.com>
This commit is contained in:
winesync 2020-09-21 23:07:38 +02:00 committed by Jérôme Gardou
parent 48f365863f
commit bbb79195a5
2 changed files with 5 additions and 12 deletions

View file

@ -229,19 +229,12 @@ static inline BOOL is_param_type_sampler(D3DXPARAMETER_TYPE type)
/* Returns the smallest power of 2 which is greater than or equal to num */
static inline uint32_t make_pow2(uint32_t num)
{
#if defined(__GNUC__) && ((__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)))
return num == 1 ? 1 : 1u << ((__builtin_clz(num - 1) ^ 0x1f) + 1);
#ifndef __REACTOS__
uint32_t index;
#else
num--;
num |= num >> 1;
num |= num >> 2;
num |= num >> 4;
num |= num >> 8;
num |= num >> 16;
num++;
return num;
unsigned long index;
#endif
return BitScanReverse(&index, num - 1) ? 1u << (index + 1) : 1;
}
struct d3dx_parameter;

View file

@ -15,4 +15,4 @@ files: {include/d3dx9.h: sdk/include/dxsdk/d3dx9.h, include/d3dx9anim.h: sdk/inc
include/d3dx9mesh.h: sdk/include/dxsdk/d3dx9mesh.h, include/d3dx9of.h: sdk/include/dxsdk/d3dx9of.h,
include/d3dx9shader.h: sdk/include/dxsdk/d3dx9shader.h, include/d3dx9shape.h: sdk/include/dxsdk/d3dx9shape.h,
include/d3dx9tex.h: sdk/include/dxsdk/d3dx9tex.h, include/d3dx9xof.h: sdk/include/dxsdk/d3dx9xof.h}
tags: {wine: c1cf13a7512387885616684130b605a7640f5187}
tags: {wine: 22970932d014f024fcf7f0f98b1a5384b1b1eb99}