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-rw-r--r--src/compiler/nir/nir.h2
-rw-r--r--src/compiler/nir/nir_lower_clamp_color_outputs.c30
2 files changed, 22 insertions, 10 deletions
diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index 8c74af0dff7..e03c0560c0e 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -2503,7 +2503,7 @@ bool nir_lower_clip_cull_distance_arrays(nir_shader *nir);
void nir_lower_two_sided_color(nir_shader *shader);
-void nir_lower_clamp_color_outputs(nir_shader *shader);
+bool nir_lower_clamp_color_outputs(nir_shader *shader);
void nir_lower_passthrough_edgeflags(nir_shader *shader);
void nir_lower_tes_patch_vertices(nir_shader *tes, unsigned patch_vertices);
diff --git a/src/compiler/nir/nir_lower_clamp_color_outputs.c b/src/compiler/nir/nir_lower_clamp_color_outputs.c
index ab211a4296c..cc497351eee 100644
--- a/src/compiler/nir/nir_lower_clamp_color_outputs.c
+++ b/src/compiler/nir/nir_lower_clamp_color_outputs.c
@@ -59,7 +59,7 @@ is_color_output(lower_state *state, nir_variable *out)
}
}
-static void
+static bool
lower_intrinsic(lower_state *state, nir_intrinsic_instr *intr)
{
nir_variable *out = NULL;
@@ -82,11 +82,11 @@ lower_intrinsic(lower_state *state, nir_intrinsic_instr *intr)
assume(out);
break;
default:
- return;
+ return false;
}
if (out->data.mode != nir_var_shader_out)
- return;
+ return false;
if (is_color_output(state, out)) {
b->cursor = nir_before_instr(&intr->instr);
@@ -94,38 +94,50 @@ lower_intrinsic(lower_state *state, nir_intrinsic_instr *intr)
s = nir_fsat(b, s);
nir_instr_rewrite_src(&intr->instr, &intr->src[0], nir_src_for_ssa(s));
}
+
+ return true;
}
static bool
lower_block(lower_state *state, nir_block *block)
{
+ bool progress = false;
+
nir_foreach_instr_safe(instr, block) {
if (instr->type == nir_instr_type_intrinsic)
- lower_intrinsic(state, nir_instr_as_intrinsic(instr));
+ progress |= lower_intrinsic(state, nir_instr_as_intrinsic(instr));
}
- return true;
+ return progress;
}
-static void
+
+static bool
lower_impl(lower_state *state, nir_function_impl *impl)
{
nir_builder_init(&state->b, impl);
+ bool progress = false;
nir_foreach_block(block, impl) {
- lower_block(state, block);
+ progress |= lower_block(state, block);
}
nir_metadata_preserve(impl, nir_metadata_block_index |
nir_metadata_dominance);
+
+ return progress;
}
-void nir_lower_clamp_color_outputs(nir_shader *shader)
+bool
+nir_lower_clamp_color_outputs(nir_shader *shader)
{
+ bool progress = false;
lower_state state = {
.shader = shader,
};
nir_foreach_function(function, shader) {
if (function->impl)
- lower_impl(&state, function->impl);
+ progress |= lower_impl(&state, function->impl);
}
+
+ return progress;
}