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Merge pull request #3287 from ReinUsesLisp/ldg-stg-16

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shader_ir/memory: Implement u16 and u8 for STG and LDG
This commit is contained in:
bunnei 2020-01-14 09:57:08 -05:00 committed by GitHub
commit 55f95e7f26
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 52 additions and 34 deletions
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84
src/video_core/shader/decode/memory.cpp
View file

@ -6,6 +6,7 @@
#include <vector>
#include <fmt/format.h>
#include "common/alignment.h"
#include "common/assert.h"
#include "common/common_types.h"
#include "common/logging/log.h"
@ -22,34 +23,39 @@ using Tegra::Shader::Register;
namespace {
u32 GetLdgMemorySize(Tegra::Shader::UniformType uniform_type) {
bool IsUnaligned(Tegra::Shader::UniformType uniform_type) {
return uniform_type == Tegra::Shader::UniformType::UnsignedByte ||
uniform_type == Tegra::Shader::UniformType::UnsignedShort;
}
u32 GetUnalignedMask(Tegra::Shader::UniformType uniform_type) {
switch (uniform_type) {
case Tegra::Shader::UniformType::UnsignedByte:
case Tegra::Shader::UniformType::Single:
return 1;
case Tegra::Shader::UniformType::Double:
return 2;
case Tegra::Shader::UniformType::Quad:
case Tegra::Shader::UniformType::UnsignedQuad:
return 4;
return 0b11;
case Tegra::Shader::UniformType::UnsignedShort:
return 0b10;
default:
UNIMPLEMENTED_MSG("Unimplemented size={}!", static_cast<u32>(uniform_type));
return 1;
UNREACHABLE();
return 0;
}
}
u32 GetStgMemorySize(Tegra::Shader::UniformType uniform_type) {
u32 GetMemorySize(Tegra::Shader::UniformType uniform_type) {
switch (uniform_type) {
case Tegra::Shader::UniformType::UnsignedByte:
return 8;
case Tegra::Shader::UniformType::UnsignedShort:
return 16;
case Tegra::Shader::UniformType::Single:
return 1;
return 32;
case Tegra::Shader::UniformType::Double:
return 2;
return 64;
case Tegra::Shader::UniformType::Quad:
case Tegra::Shader::UniformType::UnsignedQuad:
return 4;
return 128;
default:
UNIMPLEMENTED_MSG("Unimplemented size={}!", static_cast<u32>(uniform_type));
return 1;
return 32;
}
}
@ -184,9 +190,10 @@ u32 ShaderIR::DecodeMemory(NodeBlock& bb, u32 pc) {
}();
const auto [real_address_base, base_address, descriptor] =
TrackGlobalMemory(bb, instr, false);
TrackGlobalMemory(bb, instr, true, false);
const u32 count = GetLdgMemorySize(type);
const u32 size = GetMemorySize(type);
const u32 count = Common::AlignUp(size, 32) / 32;
if (!real_address_base || !base_address) {
// Tracking failed, load zeroes.
for (u32 i = 0; i < count; ++i) {
@ -200,14 +207,15 @@ u32 ShaderIR::DecodeMemory(NodeBlock& bb, u32 pc) {
const Node real_address = Operation(OperationCode::UAdd, real_address_base, it_offset);
Node gmem = MakeNode<GmemNode>(real_address, base_address, descriptor);
if (type == Tegra::Shader::UniformType::UnsignedByte) {
// To handle unaligned loads get the byte used to dereferenced global memory
// and extract that byte from the loaded uint32.
Node byte = Operation(OperationCode::UBitwiseAnd, real_address, Immediate(3));
byte = Operation(OperationCode::ULogicalShiftLeft, std::move(byte), Immediate(3));
// To handle unaligned loads get the bytes used to dereference global memory and extract
// those bytes from the loaded u32.
if (IsUnaligned(type)) {
Node mask = Immediate(GetUnalignedMask(type));
Node offset = Operation(OperationCode::UBitwiseAnd, real_address, std::move(mask));
offset = Operation(OperationCode::ULogicalShiftLeft, offset, Immediate(3));
gmem = Operation(OperationCode::UBitfieldExtract, std::move(gmem), std::move(byte),
Immediate(8));
gmem = Operation(OperationCode::UBitfieldExtract, std::move(gmem),
std::move(offset), Immediate(size));
}
SetTemporary(bb, i, gmem);
@ -295,19 +303,32 @@ u32 ShaderIR::DecodeMemory(NodeBlock& bb, u32 pc) {
}
}();
// For unaligned reads we have to read memory too.
const bool is_read = IsUnaligned(type);
const auto [real_address_base, base_address, descriptor] =
TrackGlobalMemory(bb, instr, true);
TrackGlobalMemory(bb, instr, is_read, true);
if (!real_address_base || !base_address) {
// Tracking failed, skip the store.
break;
}
const u32 count = GetStgMemorySize(type);
const u32 size = GetMemorySize(type);
const u32 count = Common::AlignUp(size, 32) / 32;
for (u32 i = 0; i < count; ++i) {
const Node it_offset = Immediate(i * 4);
const Node real_address = Operation(OperationCode::UAdd, real_address_base, it_offset);
const Node gmem = MakeNode<GmemNode>(real_address, base_address, descriptor);
const Node value = GetRegister(instr.gpr0.Value() + i);
Node value = GetRegister(instr.gpr0.Value() + i);
if (IsUnaligned(type)) {
Node mask = Immediate(GetUnalignedMask(type));
Node offset = Operation(OperationCode::UBitwiseAnd, real_address, std::move(mask));
offset = Operation(OperationCode::ULogicalShiftLeft, offset, Immediate(3));
value = Operation(OperationCode::UBitfieldInsert, gmem, std::move(value), offset,
Immediate(size));
}
bb.push_back(Operation(OperationCode::Assign, gmem, value));
}
break;
@ -336,7 +357,7 @@ u32 ShaderIR::DecodeMemory(NodeBlock& bb, u32 pc) {
std::tuple<Node, Node, GlobalMemoryBase> ShaderIR::TrackGlobalMemory(NodeBlock& bb,
Instruction instr,
bool is_write) {
bool is_read, bool is_write) {
const auto addr_register{GetRegister(instr.gmem.gpr)};
const auto immediate_offset{static_cast<u32>(instr.gmem.offset)};
@ -351,11 +372,8 @@ std::tuple<Node, Node, GlobalMemoryBase> ShaderIR::TrackGlobalMemory(NodeBlock&
const GlobalMemoryBase descriptor{index, offset};
const auto& [entry, is_new] = used_global_memory.try_emplace(descriptor);
auto& usage = entry->second;
if (is_write) {
usage.is_written = true;
} else {
usage.is_read = true;
}
usage.is_written |= is_write;
usage.is_read |= is_read;
const auto real_address =
Operation(OperationCode::UAdd, NO_PRECISE, Immediate(immediate_offset), addr_register);

2
src/video_core/shader/shader_ir.h
View file

@ -394,7 +394,7 @@ private:
std::tuple<Node, Node, GlobalMemoryBase> TrackGlobalMemory(NodeBlock& bb,
Tegra::Shader::Instruction instr,
bool is_write);
bool is_read, bool is_write);
/// Register new amending code and obtain the reference id.
std::size_t DeclareAmend(Node new_amend);