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| author | Oliver McFadden <z3ro.geek@gmail.com> | 2007-05-28 01:11:54 +0000 |
|---|---|---|
| committer | Oliver McFadden <z3ro.geek@gmail.com> | 2007-05-30 03:19:26 +0000 |
| commit | 97a89227b0edd3ef51d3ef9fd015bff12dc9b97b (patch) | |
| tree | 0bc08b00d20af75983177c2a6668f8c580abd481 /src/mesa/drivers/dri/r300/r300_reg.h | |
| parent | 779a5c160ff45428279e1ef997fd36338226df39 (diff) | |
r300: Document registers 0x2220 to 0x2230.
These registers are per-pixel and per-vertex X and Y clipping planes.
Diffstat (limited to 'src/mesa/drivers/dri/r300/r300_reg.h')
| -rw-r--r-- | src/mesa/drivers/dri/r300/r300_reg.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_reg.h b/src/mesa/drivers/dri/r300/r300_reg.h index 3f14dafc70..6f0ed4d74e 100644 --- a/src/mesa/drivers/dri/r300/r300_reg.h +++ b/src/mesa/drivers/dri/r300/r300_reg.h @@ -299,6 +299,16 @@ USE OR OTHER DEALINGS IN THE SOFTWARE. # define R300_221C_NORMAL 0x00000000 # define R300_221C_CLEAR 0x0001C000 +/* These seem to be per-pixel and per-vertex X and Y clipping planes. The first + * plane is per-pixel and the second plane is per-vertex. + * + * This was determined by experimentation alone but I believe it is correct. + */ +#define R300_VAP_CLIP_X_0 0x2220 +#define R300_VAP_CLIP_X_1 0x2224 +#define R300_VAP_CLIP_Y_0 0x2228 +#define R300_VAP_CLIP_Y_1 0x2230 + /* gap */ /* Sometimes, END_OF_PKT and 0x2284=0 are the only commands sent between |