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Share sampler descriptor snapshots across native variants

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This commit is contained in:
nmzik
2026-10-03 15:09:20 +04:00
parent 8b0cc79acf
commit 7f158c656e
6 changed files with 57 additions and 40 deletions
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src/graphics/shader/recompiler/ir/ShaderIR.h
+2
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@@ -148,6 +148,8 @@ struct ImageResource {
struct SamplerResource {
uint32_t source = 0;
uint32_t first_use_pc = 0;
// Native filtering/border variants share the original sampler's runtime descriptor.
uint32_t snapshot_index = 0;
bool force_point_filtering = false;
bool depth_compare = false;
bool integer_border = false;
src/graphics/shader/recompiler/ir/passes/ResourceMaterialization.cpp
+6 -18
View File
@@ -109,8 +109,7 @@ Prospero::BufferFormat ImageConversionFormat(Prospero::BufferFormat format) {
enum class SamplerClass : uint8_t { Float, Integer, PointInteger };
template <typename Image>
SamplerClass ClassifySampler(const Image& image) {
SamplerClass ClassifySampler(const ImageResource& image) {
if (image.numeric_class == Prospero::TextureNumericClass::Sint ||
image.conversion_format != Prospero::BufferFormat::kInvalid) {
return SamplerClass::PointInteger;
@@ -418,9 +417,6 @@ private:
uint32_t count = 0;
};
template <typename Images>
bool BuildSamplerPlan(const ShaderInfo& base, const Images& images, SamplerPlan& plan);
static bool BuildResourceSpecialization(const ResourcePlan& program, ResourceSnapshot& snapshot,
ResourceSpecialization& specialization) {
for (uint32_t i = 0; i < specialization.images.size(); i++) {
@@ -563,30 +559,21 @@ static bool BuildResourceSpecialization(const ResourcePlan& program, ResourceSna
}
}
}
SamplerPlan sampler_plan;
if (!BuildSamplerPlan(program.info, specialization.images, sampler_plan)) {
return SpecializationFail("specialized sampler layout exceeds its resource limit");
}
for (uint32_t index = static_cast<uint32_t>(program.info.samplers.size());
index < sampler_plan.sampler_count; index++) {
snapshot.samplers.push_back(snapshot.samplers[sampler_plan.bindings[index].source]);
}
ImageRemap(specialization).Apply(snapshot.images);
return true;
}
template <typename Images>
bool BuildSamplerPlan(const ShaderInfo& base, const Images& images, SamplerPlan& plan) {
bool BuildSamplerPlan(const ShaderInfo& base, SamplerPlan& plan) {
if (base.samplers.size() > plan.mapping.size()) {
return false;
}
std::array<uint8_t, ShaderInfo::MaxSamplers> usage {};
plan.sampler_count = static_cast<uint32_t>(base.samplers.size());
for (const auto& pair: base.sampled_pairs) {
if (pair.image >= images.size() || pair.sampler >= base.samplers.size()) {
if (pair.image >= base.images.size() || pair.sampler >= base.samplers.size()) {
return false;
}
usage[pair.sampler] |= 1u << static_cast<uint32_t>(ClassifySampler(images[pair.image]));
usage[pair.sampler] |= 1u << static_cast<uint32_t>(ClassifySampler(base.images[pair.image]));
}
for (uint32_t index = 0; index < base.samplers.size(); index++) {
auto& mapping = plan.mapping[index];
@@ -1134,7 +1121,7 @@ void ApplyResourceSpecialization(Program& program, const ResourceSpecialization&
}
SamplerPlan sampler_plan;
EXIT_IF(!BuildSamplerPlan(program.info, images, sampler_plan));
EXIT_IF(!BuildSamplerPlan(program.info, sampler_plan));
auto& samplers = program.info.samplers;
auto& sampled_pairs = program.info.sampled_pairs;
const auto original_sampler_count = samplers.size();
@@ -1144,6 +1131,7 @@ void ApplyResourceSpecialization(Program& program, const ResourceSpecialization&
if (index >= original_sampler_count) {
samplers.push_back(samplers[binding.source]);
}
samplers[index].snapshot_index = binding.source;
samplers[index].force_point_filtering = binding.type == SamplerClass::PointInteger;
samplers[index].integer_border = binding.type != SamplerClass::Float;
}