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nir: lower smooth lines conditionally using the new intrinsic

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RADV will enable/disable this based on a dynamic state.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21587>
This commit is contained in:
Samuel Pitoiset 2023-02-28 09:11:19 +01:00 • committed by Marge Bot
parent 759a57d902
commit 3626c23e85
1 changed files with 24 additions and 15 deletions
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39
src/compiler/nir/nir_lower_poly_line_smooth.c
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@ -51,20 +51,31 @@ lower_polylinesmooth(nir_builder *b, nir_instr *instr, void *data)
assert(intr->num_components == 4);
b->cursor = nir_before_instr(&intr->instr);
nir_ssa_def *coverage = nir_load_sample_mask_in(b);
/* coverage = (coverage) / SI_NUM_SMOOTH_AA_SAMPLES */
coverage = nir_bit_count(b, coverage);
coverage = nir_u2f32(b, coverage);
coverage = nir_fmul_imm(b, coverage, 1.0 / *num_smooth_aa_sample);
nir_ssa_def *res1, *res2;
/* Write out the fragment color*vec4(1, 1, 1, alpha) */
nir_ssa_def *one = nir_imm_float(b, 1.0f);
nir_ssa_def *new_val = nir_fmul(b, nir_vec4(b, one, one, one, coverage),
intr->src[0].ssa);
nir_instr_rewrite_src(instr, &intr->src[0], nir_src_for_ssa(new_val));
nir_if *if_enabled = nir_push_if(b, nir_load_poly_line_smooth_enabled(b));
{
nir_ssa_def *coverage = nir_load_sample_mask_in(b);
/* coverage = (coverage) / SI_NUM_SMOOTH_AA_SAMPLES */
coverage = nir_bit_count(b, coverage);
coverage = nir_u2f32(b, coverage);
coverage = nir_fmul_imm(b, coverage, 1.0 / *num_smooth_aa_sample);
/* Write out the fragment color*vec4(1, 1, 1, alpha) */
nir_ssa_def *one = nir_imm_float(b, 1.0f);
res1 = nir_fmul(b, nir_vec4(b, one, one, one, coverage), intr->src[0].ssa);
}
nir_push_else(b, if_enabled);
{
res2 = intr->src[0].ssa;
}
nir_pop_if(b, if_enabled);
nir_ssa_def *new_dest = nir_if_phi(b, res1, res2);
nir_instr_rewrite_src(instr, &intr->src[0], nir_src_for_ssa(new_dest));
return true;
}
@ -72,8 +83,6 @@ bool
nir_lower_poly_line_smooth(nir_shader *shader, unsigned num_smooth_aa_sample)
{
assert(shader->info.stage == MESA_SHADER_FRAGMENT);
return nir_shader_instructions_pass(shader, lower_polylinesmooth,
nir_metadata_loop_analysis |
nir_metadata_block_index |
nir_metadata_dominance, &num_smooth_aa_sample);
return nir_shader_instructions_pass(shader, lower_polylinesmooth, 0,
&num_smooth_aa_sample);
}