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| author | Ian Romanick <idr@us.ibm.com> | 2007-07-12 15:28:17 -0700 |
|---|---|---|
| committer | Ian Romanick <idr@us.ibm.com> | 2007-07-12 15:28:17 -0700 |
| commit | 5522136b7f01402ae02cbe35180e3d80f850a6b3 (patch) | |
| tree | 275da77af4df8b332f17cb503a4b58b608de8620 /shared-core/r300_reg.h | |
| parent | 76ca1e858fb8e1a65ea49c0c62350d7ca91044a2 (diff) | |
| parent | 851c950d988e5a47fa6add71427e5ef8d4dcf231 (diff) | |
Merge branch 'master' into xgi-0-0-2
Diffstat (limited to 'shared-core/r300_reg.h')
| -rw-r--r-- | shared-core/r300_reg.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/shared-core/r300_reg.h b/shared-core/r300_reg.h index 3ce09c16..e59919be 100644 --- a/shared-core/r300_reg.h +++ b/shared-core/r300_reg.h @@ -336,13 +336,15 @@ USE OR OTHER DEALINGS IN THE SOFTWARE. * The meaning of the two UNKNOWN fields is obviously not known. However, * experiments so far have shown that both *must* point to an instruction * inside the vertex program, otherwise the GPU locks up. + * * fglrx usually sets CNTL_3_UNKNOWN to the end of the program and - * CNTL_1_UNKNOWN points to instruction where last write to position takes - * place. + * R300_PVS_CNTL_1_POS_END_SHIFT points to instruction where last write to + * position takes place. + * * Most likely this is used to ignore rest of the program in cases * where group of verts arent visible. For some reason this "section" * is sometimes accepted other instruction that have no relationship with - *position calculations. + * position calculations. */ #define R300_VAP_PVS_CNTL_1 0x22D0 # define R300_PVS_CNTL_1_PROGRAM_START_SHIFT 0 |