blender
/
blender
136
406
Fork 587
Code Issues 6.2k Pull Requests 755 Projects 19 Wiki Activity

Fix Cycles light tree render errors on Windows 

Due to mistake in popcount implementation. Thanks to Weizhen for help
figuring this out.
This commit is contained in:
Brecht Van Lommel 2022-12-06 16:50:26 +01:00
parent 8f213e7436
commit 16b6116b9d
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
intern/cycles/util/math.h
View File

@ -796,11 +796,11 @@ ccl_device float bits_to_01(uint bits)
ccl_device_inline uint popcount(uint x)
{
/* TODO(Stefan): pop-count intrinsic for Windows with fallback for older CPUs. */
uint i = x & 0xaaaaaaaa;
uint i = x;
i = i - ((i >> 1) & 0x55555555);
i = (i & 0x33333333) + ((i >> 2) & 0x33333333);
i = (((i + (i >> 4)) & 0xF0F0F0F) * 0x1010101) >> 24;
return i & 1;
return i;
}
# endif
#elif defined(__KERNEL_ONEAPI__)