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shader: Partial implementation of LDC

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This commit is contained in:
ReinUsesLisp 2021-03-09 17:14:57 -03:00 • committed by ameerj
parent ab46371247
commit 3a63fa0477
16 changed files with 405 additions and 50 deletions
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63
src/shader_recompiler/backend/spirv/emit_context.cpp
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@ -104,15 +104,23 @@ void EmitContext::DefineCommonTypes(const Info& info) {
U1 = Name(TypeBool(), "u1");
// TODO: Conditionally define these
AddCapability(spv::Capability::Int16);
AddCapability(spv::Capability::Int64);
U16 = Name(TypeInt(16, false), "u16");
U64 = Name(TypeInt(64, false), "u64");
F32.Define(*this, TypeFloat(32), "f32");
U32.Define(*this, TypeInt(32, false), "u32");
if (info.uses_int8) {
AddCapability(spv::Capability::Int8);
U8 = Name(TypeInt(8, false), "u8");
S8 = Name(TypeInt(8, true), "s8");
}
if (info.uses_int16) {
AddCapability(spv::Capability::Int16);
U16 = Name(TypeInt(16, false), "u16");
S16 = Name(TypeInt(16, true), "s16");
}
if (info.uses_int64) {
AddCapability(spv::Capability::Int64);
U64 = Name(TypeInt(64, false), "u64");
}
if (info.uses_fp16) {
AddCapability(spv::Capability::Float16);
F16.Define(*this, TypeFloat(16), "f16");
@ -151,26 +159,51 @@ void EmitContext::DefineConstantBuffers(const Info& info, u32& binding) {
if (info.constant_buffer_descriptors.empty()) {
return;
}
const Id array_type{TypeArray(U32[1], Constant(U32[1], 4096))};
Decorate(array_type, spv::Decoration::ArrayStride, 4U);
if (True(info.used_constant_buffer_types & IR::Type::U8)) {
DefineConstantBuffers(info, &UniformDefinitions::U8, binding, U8, 'u', sizeof(u8));
DefineConstantBuffers(info, &UniformDefinitions::S8, binding, S8, 's', sizeof(s8));
}
if (True(info.used_constant_buffer_types & IR::Type::U16)) {
DefineConstantBuffers(info, &UniformDefinitions::U16, binding, U16, 'u', sizeof(u16));
DefineConstantBuffers(info, &UniformDefinitions::S16, binding, S16, 's', sizeof(s16));
}
if (True(info.used_constant_buffer_types & IR::Type::U32)) {
DefineConstantBuffers(info, &UniformDefinitions::U32, binding, U32[1], 'u', sizeof(u32));
}
if (True(info.used_constant_buffer_types & IR::Type::F32)) {
DefineConstantBuffers(info, &UniformDefinitions::F32, binding, F32[1], 'f', sizeof(f32));
}
if (True(info.used_constant_buffer_types & IR::Type::U64)) {
DefineConstantBuffers(info, &UniformDefinitions::U64, binding, U64, 'u', sizeof(u64));
}
for (const ConstantBufferDescriptor& desc : info.constant_buffer_descriptors) {
binding += desc.count;
}
}
void EmitContext::DefineConstantBuffers(const Info& info, Id UniformDefinitions::*member_type,
u32 binding, Id type, char type_char, u32 element_size) {
const Id array_type{TypeArray(type, Constant(U32[1], 65536U / element_size))};
Decorate(array_type, spv::Decoration::ArrayStride, element_size);
const Id struct_type{TypeStruct(array_type)};
Name(struct_type, "cbuf_block");
Name(struct_type, fmt::format("cbuf_block_{}{}", type_char, element_size * CHAR_BIT));
Decorate(struct_type, spv::Decoration::Block);
MemberName(struct_type, 0, "data");
MemberDecorate(struct_type, 0, spv::Decoration::Offset, 0U);
const Id uniform_type{TypePointer(spv::StorageClass::Uniform, struct_type)};
uniform_u32 = TypePointer(spv::StorageClass::Uniform, U32[1]);
const Id struct_pointer_type{TypePointer(spv::StorageClass::Uniform, struct_type)};
const Id uniform_type{TypePointer(spv::StorageClass::Uniform, type)};
uniform_types.*member_type = uniform_type;
u32 index{};
for (const ConstantBufferDescriptor& desc : info.constant_buffer_descriptors) {
const Id id{AddGlobalVariable(uniform_type, spv::StorageClass::Uniform)};
const Id id{AddGlobalVariable(struct_pointer_type, spv::StorageClass::Uniform)};
Decorate(id, spv::Decoration::Binding, binding);
Decorate(id, spv::Decoration::DescriptorSet, 0U);
Name(id, fmt::format("c{}", desc.index));
std::fill_n(cbufs.data() + desc.index, desc.count, id);
index += desc.count;
for (size_t i = 0; i < desc.count; ++i) {
cbufs[desc.index + i].*member_type = id;
}
binding += desc.count;
}
}