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intel/fs: Generalize the unlit centroid workaround 

This generalizes the unlit centroid workaround so it's less code and now
supports SIMD32.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Francisco Jerez 2017-01-13 15:33:45 -08:00 committed by Jason Ekstrand
parent 1d381731e0
commit 40fe108e2b
1 changed files with 8 additions and 14 deletions
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22
src/intel/compiler/brw_fs_visitor.cpp
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@ -281,21 +281,15 @@ fs_visitor::emit_interpolation_setup_gen6()
*/
bld.emit(FS_OPCODE_MOV_DISPATCH_TO_FLAGS);
set_predicate_inv(BRW_PREDICATE_NORMAL, true,
bld.half(0).MOV(horiz_offset(delta_xy[i], 0),
horiz_offset(pixel_delta_xy, 0)));
set_predicate_inv(BRW_PREDICATE_NORMAL, true,
bld.half(0).MOV(horiz_offset(delta_xy[i], 8),
horiz_offset(pixel_delta_xy, 8)));
if (dispatch_width == 16) {
set_predicate_inv(BRW_PREDICATE_NORMAL, true,
bld.half(1).MOV(horiz_offset(delta_xy[i], 16),
horiz_offset(pixel_delta_xy, 16)));
set_predicate_inv(BRW_PREDICATE_NORMAL, true,
bld.half(1).MOV(horiz_offset(delta_xy[i], 24),
horiz_offset(pixel_delta_xy, 24)));
for (unsigned q = 0; q < dispatch_width / 8; q++) {
for (unsigned c = 0; c < 2; c++) {
const unsigned idx = c + (q & 2) + (q & 1) * dispatch_width / 8;
set_predicate_inv(
BRW_PREDICATE_NORMAL, true,
bld.half(q).MOV(horiz_offset(delta_xy[i], idx * 8),
horiz_offset(pixel_delta_xy, idx * 8)));
}
}
assert(dispatch_width != 32); /* not implemented yet */
}
}
}