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nir: gather info whether a shader uses demote_to_helper

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Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4047>
This commit is contained in:
Daniel Schürmann
2020-03-04 16:43:15 +01:00
committed by Marge Bot
parent 66bb314cb4
commit 5adcfa68a9
2 changed files with 4 additions and 0 deletions
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3
src/compiler/nir/nir_gather_info.c
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@@ -200,6 +200,8 @@ gather_intrinsic_info(nir_intrinsic_instr *instr, nir_shader *shader,
switch (instr->intrinsic) { switch (instr->intrinsic) {
case nir_intrinsic_demote: case nir_intrinsic_demote:
case nir_intrinsic_demote_if: case nir_intrinsic_demote_if:
shader->info.fs.uses_demote = true;
/* fallthrough: quads with helper lanes only might be discarded entirely */
case nir_intrinsic_discard: case nir_intrinsic_discard:
case nir_intrinsic_discard_if: case nir_intrinsic_discard_if:
assert(shader->info.stage == MESA_SHADER_FRAGMENT); assert(shader->info.stage == MESA_SHADER_FRAGMENT);
@@ -389,6 +391,7 @@ nir_shader_gather_info(nir_shader *shader, nir_function_impl *entrypoint)
if (shader->info.stage == MESA_SHADER_FRAGMENT) { if (shader->info.stage == MESA_SHADER_FRAGMENT) {
shader->info.fs.uses_sample_qualifier = false; shader->info.fs.uses_sample_qualifier = false;
shader->info.fs.uses_discard = false; shader->info.fs.uses_discard = false;
shader->info.fs.uses_demote = false;
shader->info.fs.needs_helper_invocations = false; shader->info.fs.needs_helper_invocations = false;
} }

1
src/compiler/shader_info.h
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@@ -217,6 +217,7 @@ typedef struct shader_info {
struct { struct {
bool uses_discard:1; bool uses_discard:1;
bool uses_demote:1;
/** /**
* True if this fragment shader requires helper invocations. This * True if this fragment shader requires helper invocations. This