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etnaviv: add missing vs_needs_z_div handling to NIR backend

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Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
This commit is contained in:
Jonathan Marek
2019-12-08 18:16:34 -05:00
parent 64c7cdcae5
commit 440cd835de
1 changed files with 21 additions and 1 deletions
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22
src/gallium/drivers/etnaviv/etnaviv_compiler_nir.c
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@@ -96,10 +96,30 @@ etna_lower_io(nir_shader *shader, struct etna_shader_variant *v)
ssa->parent_instr);
} break;
case nir_intrinsic_store_deref: {
nir_deref_instr *deref = nir_src_as_deref(intr->src[0]);
if (shader->info.stage == MESA_SHADER_VERTEX &&
v->shader->specs->vs_need_z_div &&
deref->var->data.location == VARYING_SLOT_POS) {
assert(deref->deref_type == nir_deref_type_var);
b.cursor = nir_before_instr(instr);
nir_ssa_def *out[4];
out[0] = nir_channel(&b, intr->src[1].ssa, 0);
out[1] = nir_channel(&b, intr->src[1].ssa, 1);
out[2] = nir_fmul_imm(&b, nir_fadd(&b, nir_channel(&b, intr->src[1].ssa, 2),
nir_channel(&b, intr->src[1].ssa, 3)),
0.5f);
out[3] = nir_channel(&b, intr->src[1].ssa, 3);
nir_instr_rewrite_src(instr, &intr->src[1],
nir_src_for_ssa(nir_vec(&b, out, 4)));
}
if (shader->info.stage != MESA_SHADER_FRAGMENT || !v->key.frag_rb_swap)
break;
nir_deref_instr *deref = nir_src_as_deref(intr->src[0]);
assert(deref->deref_type == nir_deref_type_var);
if (deref->var->data.location != FRAG_RESULT_COLOR &&