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shader_recompiler: Implement linear interpolation support (#3055)
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This commit is contained in:
TheTurtle 2025-06-08 22:46:34 +03:00 • committed by GitHub
parent 5004e41100
commit 8ffcfc87bd
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GPG key ID: B5690EEEBB952194
14 changed files with 425 additions and 375 deletions
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23
src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
View file

@ -307,7 +307,9 @@ void EmitContext::DefineInterpolatedAttribs() {
const Id p2{OpCompositeExtract(F32[4], p_array, 2U)};
const Id p10{OpFSub(F32[4], p1, p0)};
const Id p20{OpFSub(F32[4], p2, p0)};
const Id bary_coord{OpLoad(F32[3], gl_bary_coord_id)};
const Id bary_coord{OpLoad(F32[3], IsLinear(info.interp_qualifiers[i])
? bary_coord_linear_id
: bary_coord_persp_id)};
const Id bary_coord_y{OpCompositeExtract(F32[1], bary_coord, 1)};
const Id bary_coord_z{OpCompositeExtract(F32[1], bary_coord, 2)};
const Id p10_y{OpVectorTimesScalar(F32[4], p10, bary_coord_y)};
@ -411,8 +413,14 @@ void EmitContext::DefineInputs() {
DefineVariable(U1[1], spv::BuiltIn::FrontFacing, spv::StorageClass::Input);
}
if (profile.needs_manual_interpolation) {
gl_bary_coord_id =
DefineVariable(F32[3], spv::BuiltIn::BaryCoordKHR, spv::StorageClass::Input);
if (info.has_perspective_interp) {
bary_coord_persp_id =
DefineVariable(F32[3], spv::BuiltIn::BaryCoordKHR, spv::StorageClass::Input);
}
if (info.has_linear_interp) {
bary_coord_linear_id = DefineVariable(F32[3], spv::BuiltIn::BaryCoordNoPerspKHR,
spv::StorageClass::Input);
}
}
for (s32 i = 0; i < runtime_info.fs_info.num_inputs; i++) {
const auto& input = runtime_info.fs_info.inputs[i];
@ -435,9 +443,12 @@ void EmitContext::DefineInputs() {
} else {
attr_id = DefineInput(type, semantic);
Name(attr_id, fmt::format("fs_in_attr{}", semantic));
}
if (input.is_flat) {
Decorate(attr_id, spv::Decoration::Flat);
if (input.is_flat) {
Decorate(attr_id, spv::Decoration::Flat);
} else if (IsLinear(info.interp_qualifiers[i])) {
Decorate(attr_id, spv::Decoration::NoPerspective);
}
}
input_params[semantic] =
GetAttributeInfo(AmdGpu::NumberFormat::Float, attr_id, num_components, false);

4
src/shader_recompiler/backend/spirv/spirv_emit_context.h
View file

@ -293,8 +293,8 @@ public:
Id shared_memory_u32_type{};
Id interpolate_func{};
Id gl_bary_coord_id{};
Id bary_coord_persp_id{};
Id bary_coord_linear_id{};
struct TextureDefinition {
const VectorIds* data_types;