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i965: Align the start of attribute interp coefficients in FS to use PLN.

This commit is contained in:
Eric Anholt 2010-09-03 17:21:49 -07:00
parent 3dbc9ea0a3
commit 3fb5377ba5
1 changed files with 8 additions and 0 deletions
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8
src/mesa/drivers/dri/i965/brw_fs.cpp
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@ -1514,6 +1514,14 @@ fs_visitor::assign_curb_setup()
c->prog_data.first_curbe_grf = c->key.nr_payload_regs;
c->prog_data.curb_read_length = ALIGN(c->prog_data.nr_params, 8) / 8;
if (intel->gen == 5 && (c->prog_data.first_curbe_grf +
c->prog_data.curb_read_length) & 1) {
/* Align the start of the interpolation coefficients so that we can use
* the PLN instruction.
*/
c->prog_data.first_curbe_grf++;
}
/* Map the offsets in the UNIFORM file to fixed HW regs. */
foreach_iter(exec_list_iterator, iter, this->instructions) {
fs_inst *inst = (fs_inst *)iter.get();