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buffer_cache: Reduce uniform buffer size from shader usage

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Increases performance significantly on certain titles.
This commit is contained in:
ReinUsesLisp 2021-06-02 02:15:07 -03:00 • committed by ameerj
parent e57ee3b7fd
commit 4a2361a1e2
11 changed files with 78 additions and 38 deletions
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19
src/shader_recompiler/ir_opt/collect_shader_info_pass.cpp
View file

@ -560,32 +560,45 @@ void VisitUsages(Info& info, IR::Inst& inst) {
case IR::Opcode::GetCbufU32:
case IR::Opcode::GetCbufF32:
case IR::Opcode::GetCbufU32x2: {
if (const IR::Value index{inst.Arg(0)}; index.IsImmediate()) {
AddConstantBufferDescriptor(info, index.U32(), 1);
} else {
const IR::Value index{inst.Arg(0)};
const IR::Value offset{inst.Arg(1)};
if (!index.IsImmediate()) {
throw NotImplementedException("Constant buffer with non-immediate index");
}
AddConstantBufferDescriptor(info, index.U32(), 1);
u32 element_size{};
switch (inst.GetOpcode()) {
case IR::Opcode::GetCbufU8:
case IR::Opcode::GetCbufS8:
info.used_constant_buffer_types |= IR::Type::U8;
element_size = 1;
break;
case IR::Opcode::GetCbufU16:
case IR::Opcode::GetCbufS16:
info.used_constant_buffer_types |= IR::Type::U16;
element_size = 2;
break;
case IR::Opcode::GetCbufU32:
info.used_constant_buffer_types |= IR::Type::U32;
element_size = 4;
break;
case IR::Opcode::GetCbufF32:
info.used_constant_buffer_types |= IR::Type::F32;
element_size = 4;
break;
case IR::Opcode::GetCbufU32x2:
info.used_constant_buffer_types |= IR::Type::U32x2;
element_size = 8;
break;
default:
break;
}
u32& size{info.constant_buffer_used_sizes[index.U32()]};
if (offset.IsImmediate()) {
size = std::max(size, offset.U32() + element_size);
} else {
size = 0x10'000;
}
break;
}
case IR::Opcode::BindlessImageSampleImplicitLod:

1
src/shader_recompiler/shader_info.h
View file

@ -197,6 +197,7 @@ struct Info {
IR::Type used_storage_buffer_types{};
u32 constant_buffer_mask{};
std::array<u32, MAX_CBUFS> constant_buffer_used_sizes{};
u32 nvn_buffer_base{};
std::bitset<16> nvn_buffer_used{};