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r600c: fix setting negative values to bitfields

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when setting negative integers to bitfields we could overwrite
other parts of it. So mask the value to be written correctly.
This is used quite often in the driver - hope it doesnt affect
performace or uncover behaviour relied before...

fixes strange effects when setting negative lodbias on evergreen
This commit is contained in:
Andre Maasikas 2010-09-14 18:56:39 +03:00
parent 79ab394cd2
commit b0bc026c12
1 changed files with 1 additions and 1 deletions
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2
src/mesa/drivers/dri/r600/r700_chip.h
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@ -38,7 +38,7 @@
#include "r700_chipoffset.h"
#define SETfield(x, val, shift, mask) ( (x) = ((x) & ~(mask)) | ((val) << (shift)) ) /* u32All */
#define SETfield(x, val, shift, mask) ( (x) = ((x) & ~(mask)) | (((val) << (shift)) & (mask)) )/* u32All */
#define CLEARfield(x, mask) ( (x) &= ~(mask) )
#define SETbit(x, bit) ( (x) |= (bit) )
#define CLEARbit(x, bit) ( (x) &= ~(bit) )