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Merge pull request #2565 from ReinUsesLisp/track-indirect

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shader/track: Track indirect buffers
This commit is contained in:
Fernando Sahmkow 2019-07-16 14:58:35 -04:00 committed by GitHub
commit b56e7f870a
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 34 additions and 33 deletions
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6
src/video_core/shader/decode/image.cpp
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@ -95,12 +95,8 @@ const Image& ShaderIR::GetImage(Tegra::Shader::Image image, Tegra::Shader::Image
const Image& ShaderIR::GetBindlessImage(Tegra::Shader::Register reg,
Tegra::Shader::ImageType type) {
const Node image_register{GetRegister(reg)};
const Node base_image{
const auto [base_image, cbuf_index, cbuf_offset]{
TrackCbuf(image_register, global_code, static_cast<s64>(global_code.size()))};
const auto cbuf{std::get_if<CbufNode>(&*base_image)};
const auto cbuf_offset_imm{std::get_if<ImmediateNode>(&*cbuf->GetOffset())};
const auto cbuf_offset{cbuf_offset_imm->GetValue()};
const auto cbuf_index{cbuf->GetIndex()};
const auto cbuf_key{(static_cast<u64>(cbuf_index) << 32) | static_cast<u64>(cbuf_offset)};
// If this image has already been used, return the existing mapping.

15
src/video_core/shader/decode/memory.cpp
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@ -297,18 +297,13 @@ std::tuple<Node, Node, GlobalMemoryBase> ShaderIR::TrackAndGetGlobalMemory(NodeB
const auto addr_register{GetRegister(instr.gmem.gpr)};
const auto immediate_offset{static_cast<u32>(instr.gmem.offset)};
const Node base_address{
TrackCbuf(addr_register, global_code, static_cast<s64>(global_code.size()))};
const auto cbuf = std::get_if<CbufNode>(&*base_address);
ASSERT(cbuf != nullptr);
const auto cbuf_offset_imm = std::get_if<ImmediateNode>(&*cbuf->GetOffset());
ASSERT(cbuf_offset_imm != nullptr);
const auto cbuf_offset = cbuf_offset_imm->GetValue();
const auto [base_address, index, offset] =
TrackCbuf(addr_register, global_code, static_cast<s64>(global_code.size()));
ASSERT(base_address != nullptr);
bb.push_back(
Comment(fmt::format("Base address is c[0x{:x}][0x{:x}]", cbuf->GetIndex(), cbuf_offset)));
bb.push_back(Comment(fmt::format("Base address is c[0x{:x}][0x{:x}]", index, offset)));
const GlobalMemoryBase descriptor{cbuf->GetIndex(), cbuf_offset};
const GlobalMemoryBase descriptor{index, offset};
const auto& [entry, is_new] = used_global_memory.try_emplace(descriptor);
auto& usage = entry->second;
if (is_write) {

8
src/video_core/shader/decode/texture.cpp
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@ -308,13 +308,9 @@ const Sampler& ShaderIR::GetSampler(const Tegra::Shader::Sampler& sampler, Textu
const Sampler& ShaderIR::GetBindlessSampler(const Tegra::Shader::Register& reg, TextureType type,
bool is_array, bool is_shadow) {
const Node sampler_register = GetRegister(reg);
const Node base_sampler =
const auto [base_sampler, cbuf_index, cbuf_offset] =
TrackCbuf(sampler_register, global_code, static_cast<s64>(global_code.size()));
const auto cbuf = std::get_if<CbufNode>(&*base_sampler);
const auto cbuf_offset_imm = std::get_if<ImmediateNode>(&*cbuf->GetOffset());
ASSERT(cbuf_offset_imm != nullptr);
const auto cbuf_offset = cbuf_offset_imm->GetValue();
const auto cbuf_index = cbuf->GetIndex();
ASSERT(base_sampler != nullptr);
const auto cbuf_key = (static_cast<u64>(cbuf_index) << 32) | static_cast<u64>(cbuf_offset);
// If this sampler has already been used, return the existing mapping.

11
src/video_core/shader/shader_ir.cpp
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@ -61,7 +61,16 @@ Node ShaderIR::GetConstBufferIndirect(u64 index_, u64 offset_, Node node) {
const auto [entry, is_new] = used_cbufs.try_emplace(index);
entry->second.MarkAsUsedIndirect();
const Node final_offset = Operation(OperationCode::UAdd, NO_PRECISE, node, Immediate(offset));
const Node final_offset = [&]() {
// Attempt to inline constant buffer without a variable offset. This is done to allow
// tracking LDC calls.
if (const auto gpr = std::get_if<GprNode>(&*node)) {
if (gpr->GetIndex() == Register::ZeroIndex) {
return Immediate(offset);
}
}
return Operation(OperationCode::UAdd, NO_PRECISE, node, Immediate(offset));
}();
return MakeNode<CbufNode>(index, final_offset);
}

2
src/video_core/shader/shader_ir.h
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@ -328,7 +328,7 @@ private:
void WriteLop3Instruction(NodeBlock& bb, Tegra::Shader::Register dest, Node op_a, Node op_b,
Node op_c, Node imm_lut, bool sets_cc);
Node TrackCbuf(Node tracked, const NodeBlock& code, s64 cursor) const;
std::tuple<Node, u32, u32> TrackCbuf(Node tracked, const NodeBlock& code, s64 cursor) const;
std::optional<u32> TrackImmediate(Node tracked, const NodeBlock& code, s64 cursor) const;

25
src/video_core/shader/track.cpp
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@ -32,39 +32,44 @@ std::pair<Node, s64> FindOperation(const NodeBlock& code, s64 cursor,
}
return {};
}
} // namespace
} // Anonymous namespace
Node ShaderIR::TrackCbuf(Node tracked, const NodeBlock& code, s64 cursor) const {
std::tuple<Node, u32, u32> ShaderIR::TrackCbuf(Node tracked, const NodeBlock& code,
s64 cursor) const {
if (const auto cbuf = std::get_if<CbufNode>(&*tracked)) {
// Cbuf found, but it has to be immediate
return std::holds_alternative<ImmediateNode>(*cbuf->GetOffset()) ? tracked : nullptr;
// Constant buffer found, test if it's an immediate
const auto offset = cbuf->GetOffset();
if (const auto immediate = std::get_if<ImmediateNode>(&*offset)) {
return {tracked, cbuf->GetIndex(), immediate->GetValue()};
}
return {};
}
if (const auto gpr = std::get_if<GprNode>(&*tracked)) {
if (gpr->GetIndex() == Tegra::Shader::Register::ZeroIndex) {
return nullptr;
return {};
}
// Reduce the cursor in one to avoid infinite loops when the instruction sets the same
// register that it uses as operand
const auto [source, new_cursor] = TrackRegister(gpr, code, cursor - 1);
if (!source) {
return nullptr;
return {};
}
return TrackCbuf(source, code, new_cursor);
}
if (const auto operation = std::get_if<OperationNode>(&*tracked)) {
for (std::size_t i = 0; i < operation->GetOperandsCount(); ++i) {
if (const auto found = TrackCbuf((*operation)[i], code, cursor)) {
// Cbuf found in operand
if (auto found = TrackCbuf((*operation)[i], code, cursor); std::get<0>(found)) {
// Cbuf found in operand.
return found;
}
}
return nullptr;
return {};
}
if (const auto conditional = std::get_if<ConditionalNode>(&*tracked)) {
const auto& conditional_code = conditional->GetCode();
return TrackCbuf(tracked, conditional_code, static_cast<s64>(conditional_code.size()));
}
return nullptr;
return {};
}
std::optional<u32> ShaderIR::TrackImmediate(Node tracked, const NodeBlock& code, s64 cursor) const {