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intel/fs: Use fs_regs instead of brw_regs in the unlit centroid workaround 

While we're here, we change to using horiz_offset() instead of abusing
half().

v2 (Jason Ekstrand):
 - Use horiz_offset() instead of half()

Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Francisco Jerez 2017-01-13 15:18:07 -08:00 committed by Jason Ekstrand
parent 38aee1a06d
commit d996e5b812
1 changed files with 12 additions and 12 deletions
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24
src/intel/compiler/brw_fs_visitor.cpp
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@ -268,32 +268,32 @@ fs_visitor::emit_interpolation_setup_gen6()
1 << BRW_BARYCENTRIC_NONPERSPECTIVE_CENTROID);
for (int i = 0; i < BRW_BARYCENTRIC_MODE_COUNT; ++i) {
uint8_t reg = payload.barycentric_coord_reg[i];
this->delta_xy[i] = fs_reg(brw_vec16_grf(reg, 0));
this->delta_xy[i] =
fs_reg(brw_vec8_grf(payload.barycentric_coord_reg[i], 0));
if (devinfo->needs_unlit_centroid_workaround &&
(centroid_modes & (1 << i))) {
const fs_reg &pixel_delta_xy = delta_xy[i - 1];
/* Get the pixel/sample mask into f0 so that we know which
* pixels are lit. Then, for each channel that is unlit,
* replace the centroid data with non-centroid data.
*/
bld.emit(FS_OPCODE_MOV_DISPATCH_TO_FLAGS);
uint8_t pixel_reg = payload.barycentric_coord_reg[i - 1];
set_predicate_inv(BRW_PREDICATE_NORMAL, true,
bld.half(0).MOV(brw_vec8_grf(reg, 0),
brw_vec8_grf(pixel_reg, 0)));
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(brw_vec8_grf(reg + 1, 0),
brw_vec8_grf(pixel_reg + 1, 0)));
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(brw_vec8_grf(reg + 2, 0),
brw_vec8_grf(pixel_reg + 2, 0)));
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(brw_vec8_grf(reg + 3, 0),
brw_vec8_grf(pixel_reg + 3, 0)));
bld.half(1).MOV(horiz_offset(delta_xy[i], 24),
horiz_offset(pixel_delta_xy, 24)));
}
assert(dispatch_width != 32); /* not implemented yet */
}