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Honor explicit gather LOD with shared image mip selection

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Co-authored-by: YuhiAida <21134775+YuhiAida@users.noreply.github.com>
Co-authored-by: BlackCAT <52720489+psnwd@users.noreply.github.com>
Co-authored-by: shadowbeat070 <70843316+shadowbeat070@users.noreply.github.com>
Co-authored-by: Senaxx <michelbeld@gmail.com>
Co-authored-by: Mac <me@itsmemac.com>
Co-authored-by: Ali Almohaya <AliAlmohaya@gmail.com>
This commit is contained in:
frans
2026-10-03 11:21:42 +04:00
committed by nmzik
parent 0bb2bdad17
commit bd611bfe15
15 changed files with 517 additions and 171 deletions
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src/graphics/shader/recompiler/ir/passes/ResourceMaterialization.cpp
+14 -4
View File
@@ -124,8 +124,8 @@ bool DescriptorIsCube(const DescriptorValue& descriptor) {
Prospero::ImageType::kCube;
}
uint32_t StorageMipCount(const ImageResource& image, const DescriptorValue& descriptor) {
if (image.mip_mode != ImageMipMode::DynamicStorage || NullImageDescriptor(descriptor)) {
uint32_t ImageMipCount(const ImageResource& image, const DescriptorValue& descriptor) {
if (image.mip_mode != ImageMipMode::Dynamic || NullImageDescriptor(descriptor)) {
return 1;
}
const auto base = (descriptor.dwords[3] >> 12u) & 0xfu;
@@ -435,10 +435,10 @@ static bool BuildResourceSpecialization(const ResourcePlan& program, ResourceSna
(base.atomic && base.resource_class != ImageResourceClass::Storage)) {
return SpecializationFail(fmt::format("image resource {} has an invalid class", i));
}
image.mip_count = StorageMipCount(base, descriptor);
image.mip_count = ImageMipCount(base, descriptor);
if (image.mip_count == 0u) {
return SpecializationFail(
fmt::format("storage image descriptor {} has an invalid mip range", i));
fmt::format("image descriptor {} has an invalid mip range", i));
}
if (NullImageDescriptor(descriptor)) {
image.numeric_class = base.atomic ? Prospero::TextureNumericClass::Uint
@@ -1077,6 +1077,16 @@ bool MaterializeResources(const ResourcePlan& program, const SrtRuntime& runtime
if (!evaluate(program.info.samplers[i].source, snapshot.samplers[i])) {
return false;
}
if (program.info.samplers[i].gather_lod) {
const auto control = snapshot.samplers[i].dwords[2];
const auto filter = (control >> 26u) & 3u;
// MipNone always selects the base level. Explicit point gathers currently require
// encoded-zero primary and secondary bias; linear primary-mip selection is unsupported.
if (filter > 1u || (filter == 1u && (control & 0xfffffu) != 0u)) {
return SpecializationFail(
"explicit-LOD gather requires mip filtering None or Point with zero LOD biases");
}
}
}
snapshot.user_data.assign(runtime.user_data.begin(), runtime.user_data.end());
return BuildResourceSpecialization(program, snapshot, specialization);