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asahi: make GS flatshade_first more dynamic

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baby step

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27616>
This commit is contained in:
Alyssa Rosenzweig 2024-01-29 15:57:36 -04:00 • committed by Marge Bot
parent 4036c710bd
commit bfaa3691e1
1 changed files with 2 additions and 14 deletions
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16
src/asahi/lib/agx_nir_lower_gs.c
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@ -47,9 +47,6 @@ struct lower_gs_state {
*/
int count_index[MAX_VERTEX_STREAMS][GS_NUM_COUNTERS];
/* Provoking vertex mode, required for transform feedback calculations */
nir_def *flatshade_first;
bool rasterizer_discard;
};
@ -662,7 +659,8 @@ write_xfb(nir_builder *b, struct lower_gs_state *state, unsigned stream,
* because only the parity matters.
*/
rotated_vert = libagx_map_vertex_in_tri_strip(
b, index_in_strip, rotated_vert, state->flatshade_first);
b, index_in_strip, rotated_vert,
nir_inot(b, nir_i2b(b, nir_load_provoking_last(b))));
}
nir_def *addr = libagx_xfb_vertex_address(
@ -1223,16 +1221,6 @@ agx_nir_lower_gs(nir_shader *gs, nir_shader *vs, const nir_shader *libagx,
NIR_PASS(_, gs, nir_shader_instructions_pass, agx_lower_output_to_var,
nir_metadata_block_index | nir_metadata_dominance, &state);
/* Set flatshade_first. For now this is always a constant, but in the future
* we will want this to be dynamic.
*/
{
nir_builder b =
nir_builder_at(nir_before_impl(nir_shader_get_entrypoint(gs)));
gs_state.flatshade_first = nir_imm_bool(&b, ia->flatshade_first);
}
NIR_PASS(_, gs, nir_shader_intrinsics_pass, lower_gs_instr,
nir_metadata_none, &gs_state);