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intel/fs: Handle non-perspective-correct interpolation on gen4-5 

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11125>
This commit is contained in:
Jason Ekstrand 2020-04-24 17:45:08 -05:00 committed by Marge Bot
parent 1956ff08ad
commit f5e58838c2
1 changed files with 7 additions and 0 deletions
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7
src/intel/compiler/brw_fs_visitor.cpp
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@ -191,6 +191,13 @@ fs_visitor::emit_interpolation_setup_gfx4()
this->pixel_z = fetch_payload_reg(bld, payload.source_depth_reg);
/* The SF program automatically handles doing the perspective correction or
* not based on wm_prog_data::interp_mode[] so we can use the same pixel
* offsets for both perspective and non-perspective.
*/
this->delta_xy[BRW_BARYCENTRIC_NONPERSPECTIVE_PIXEL] =
this->delta_xy[BRW_BARYCENTRIC_PERSPECTIVE_PIXEL];
abld = bld.annotate("compute pos.w and 1/pos.w");
/* Compute wpos.w. It's always in our setup, since it's needed to
* interpolate the other attributes.