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authorAndre Maasikas <[email protected]>2010-09-14 18:56:39 +0300
committerAndre Maasikas <[email protected]>2010-09-14 19:00:35 +0300
commitb0bc026c12042405357ae65585812ca11786837f (patch)
tree1687bd4171d6003e77267b65e015c95e0acaf6f2 /src/mesa/drivers
parent79ab394cd2ca3f88ad854503b95e886a6c5d47d5 (diff)
r600c: fix setting negative values to bitfields7.9-branchpoint
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
Diffstat (limited to 'src/mesa/drivers')
-rw-r--r--src/mesa/drivers/dri/r600/r700_chip.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/r600/r700_chip.h b/src/mesa/drivers/dri/r600/r700_chip.h
index ebf1840a795..0ca237b1fe0 100644
--- a/src/mesa/drivers/dri/r600/r700_chip.h
+++ b/src/mesa/drivers/dri/r600/r700_chip.h
@@ -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) )