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intel/compiler: Convert wm_prog_key::multisample_fbo to a tri-state

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This allows us to communicate to the back-end that we don't actually
know if the framebuffer is multisampled or not.  No drivers set anything
but ALWAYS/NEVER and we still have a few ALWAYS/NEVER assumptions but
those should be asserted.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21094>
This commit is contained in:
Jason Ekstrand
2021-11-19 13:44:35 -06:00
committed by Marge Bot
parent 5644011f06
commit 949b42c4dc
10 changed files with 31 additions and 13 deletions
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src/intel/compiler/brw_nir.c
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@@ -553,7 +553,7 @@ brw_nir_lower_fs_inputs(nir_shader *nir,
if (devinfo->ver >= 11)
nir_lower_interpolation(nir, ~0);
if (!key->multisample_fbo) {
if (key->multisample_fbo == BRW_NEVER) {
nir_lower_single_sampled(nir);
} else if (key->persample_interp == BRW_ALWAYS) {
nir_shader_instructions_pass(nir, lower_barycentric_per_sample,