Mesa (master): nir: allow passing alpha-ref state to lowering-code
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Thu Oct 17 09:26:21 UTC 2019
Module: Mesa
Branch: master
Commit: 6d7e02e37da5335d2be11ca1d4bfa002e73c5770
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=6d7e02e37da5335d2be11ca1d4bfa002e73c5770
Author: Erik Faye-Lund <erik.faye-lund at collabora.com>
Date: Thu Oct 3 16:22:58 2019 -0400
nir: allow passing alpha-ref state to lowering-code
Reviewed-by: Marek Olšák <marek.olsak at amd.com>
---
src/broadcom/compiler/vir.c | 2 +-
src/compiler/nir/nir.h | 3 ++-
src/compiler/nir/nir_lower_alpha_test.c | 21 ++++++++++++++++++---
src/gallium/drivers/panfrost/pan_assemble.c | 3 ++-
src/gallium/drivers/vc4/vc4_program.c | 3 ++-
5 files changed, 25 insertions(+), 7 deletions(-)
diff --git a/src/broadcom/compiler/vir.c b/src/broadcom/compiler/vir.c
index 802448b1e03..5d929c2412a 100644
--- a/src/broadcom/compiler/vir.c
+++ b/src/broadcom/compiler/vir.c
@@ -846,7 +846,7 @@ v3d_nir_lower_fs_late(struct v3d_compile *c)
if (c->fs_key->alpha_test) {
NIR_PASS_V(c->s, nir_lower_alpha_test,
c->fs_key->alpha_test_func,
- false);
+ false, NULL);
}
if (c->key->ucp_enables)
diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index fd7f3635cbe..3732b038630 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -3683,7 +3683,8 @@ bool nir_lower_constant_initializers(nir_shader *shader,
bool nir_move_vec_src_uses_to_dest(nir_shader *shader);
bool nir_lower_vec_to_movs(nir_shader *shader);
void nir_lower_alpha_test(nir_shader *shader, enum compare_func func,
- bool alpha_to_one);
+ bool alpha_to_one,
+ const gl_state_index16 *alpha_ref_state_tokens);
bool nir_lower_alu(nir_shader *shader);
bool nir_lower_flrp(nir_shader *shader, unsigned lowering_mask,
diff --git a/src/compiler/nir/nir_lower_alpha_test.c b/src/compiler/nir/nir_lower_alpha_test.c
index ddd815765bd..b652fb796be 100644
--- a/src/compiler/nir/nir_lower_alpha_test.c
+++ b/src/compiler/nir/nir_lower_alpha_test.c
@@ -37,7 +37,8 @@
void
nir_lower_alpha_test(nir_shader *shader, enum compare_func func,
- bool alpha_to_one)
+ bool alpha_to_one,
+ const gl_state_index16 *alpha_ref_state_tokens)
{
assert(shader->info.stage == MESA_SHADER_FRAGMENT);
@@ -93,9 +94,23 @@ nir_lower_alpha_test(nir_shader *shader, enum compare_func func,
3);
}
+ nir_ssa_def *alpha_ref;
+ if (alpha_ref_state_tokens) {
+ nir_variable *var = nir_variable_create(shader,
+ nir_var_uniform,
+ glsl_float_type(),
+ "gl_AlphaRefMESA");
+ var->num_state_slots = 1;
+ var->state_slots = ralloc_array(var, nir_state_slot, 1);
+ memcpy(var->state_slots[0].tokens,
+ alpha_ref_state_tokens,
+ sizeof(var->state_slots[0].tokens));
+ alpha_ref = nir_load_var(&b, var);
+ } else
+ alpha_ref = nir_load_alpha_ref_float(&b);
+
nir_ssa_def *condition =
- nir_compare_func(&b, func,
- alpha, nir_load_alpha_ref_float(&b));
+ nir_compare_func(&b, func, alpha, alpha_ref);
nir_intrinsic_instr *discard =
nir_intrinsic_instr_create(b.shader,
diff --git a/src/gallium/drivers/panfrost/pan_assemble.c b/src/gallium/drivers/panfrost/pan_assemble.c
index afd16abb2d2..8c3690c8e8c 100644
--- a/src/gallium/drivers/panfrost/pan_assemble.c
+++ b/src/gallium/drivers/panfrost/pan_assemble.c
@@ -63,7 +63,8 @@ panfrost_shader_compile(
/* Inject the alpha test now if we need to */
if (state->alpha_state.enabled) {
- NIR_PASS_V(s, nir_lower_alpha_test, state->alpha_state.func, false);
+ NIR_PASS_V(s, nir_lower_alpha_test,
+ state->alpha_state.func, false, NULL);
}
}
diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c
index 79edc6b1c2f..08487bea3a6 100644
--- a/src/gallium/drivers/vc4/vc4_program.c
+++ b/src/gallium/drivers/vc4/vc4_program.c
@@ -2258,7 +2258,8 @@ vc4_shader_ntq(struct vc4_context *vc4, enum qstage stage,
NIR_PASS_V(c->s, nir_lower_alpha_test,
c->fs_key->alpha_test_func,
c->fs_key->sample_alpha_to_one &&
- c->fs_key->msaa);
+ c->fs_key->msaa,
+ NULL);
}
NIR_PASS_V(c->s, vc4_nir_lower_blend, c);
}
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