diff options
Diffstat (limited to 'src/mesa/drivers/dri/r300/r300_reg.h')
| -rw-r--r-- | src/mesa/drivers/dri/r300/r300_reg.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_reg.h b/src/mesa/drivers/dri/r300/r300_reg.h index 2e998bc5fe..6ca4257cbd 100644 --- a/src/mesa/drivers/dri/r300/r300_reg.h +++ b/src/mesa/drivers/dri/r300/r300_reg.h @@ -326,8 +326,13 @@ USE OR OTHER DEALINGS IN THE SOFTWARE. /* I do not know the purpose of this register. However, I do know that * it is set to 221C_CLEAR for clear operations and to 221C_NORMAL * for normal rendering. + * + * 2007-11-05: This register is the user clip plane control register, but there + * also seems to be a rendering mode control; the NORMAL/CLEAR defines. + * + * See bug #9871. http://bugs.freedesktop.org/attachment.cgi?id=10672&action=view */ -#define R300_VAP_UNKNOWN_221C 0x221C +#define R300_VAP_CLIP_CNTL 0x221C # define R300_221C_NORMAL 0x00000000 # define R300_221C_CLEAR 0x0001C000 #define R300_VAP_UCP_ENABLE_0 (1 << 0) |