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Merge pull request #2441 from ReinUsesLisp/al2p

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shader: Implement AL2P and ALD.PHYS
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bunnei 2019-05-19 14:02:58 -04:00 • committed by GitHub
commit d49efbfb4a
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10 changed files with 311 additions and 158 deletions
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30
src/video_core/shader/decode/memory.cpp
View file

@ -12,6 +12,8 @@
#include "video_core/engines/shader_bytecode.h"
#include "video_core/shader/shader_ir.h"
#pragma optimize("", off)
namespace VideoCommon::Shader {
using Tegra::Shader::Attribute;
@ -47,17 +49,20 @@ u32 ShaderIR::DecodeMemory(NodeBlock& bb, u32 pc) {
"Indirect attribute loads are not supported");
UNIMPLEMENTED_IF_MSG((instr.attribute.fmt20.immediate.Value() % sizeof(u32)) != 0,
"Unaligned attribute loads are not supported");
UNIMPLEMENTED_IF_MSG(instr.attribute.fmt20.IsPhysical() &&
instr.attribute.fmt20.size != Tegra::Shader::AttributeSize::Word,
"Non-32 bits PHYS reads are not implemented");
Tegra::Shader::IpaMode input_mode{Tegra::Shader::IpaInterpMode::Pass,
Tegra::Shader::IpaSampleMode::Default};
const Node buffer{GetRegister(instr.gpr39)};
u64 next_element = instr.attribute.fmt20.element;
auto next_index = static_cast<u64>(instr.attribute.fmt20.index.Value());
const auto LoadNextElement = [&](u32 reg_offset) {
const Node buffer = GetRegister(instr.gpr39);
const Node attribute = GetInputAttribute(static_cast<Attribute::Index>(next_index),
next_element, input_mode, buffer);
const Node attribute{instr.attribute.fmt20.IsPhysical()
? GetPhysicalInputAttribute(instr.gpr8, buffer)
: GetInputAttribute(static_cast<Attribute::Index>(next_index),
next_element, buffer)};
SetRegister(bb, instr.gpr0.Value() + reg_offset, attribute);
@ -239,6 +244,21 @@ u32 ShaderIR::DecodeMemory(NodeBlock& bb, u32 pc) {
}
break;
}
case OpCode::Id::AL2P: {
// Ignore al2p.direction since we don't care about it.
// Calculate emulation fake physical address.
const Node fixed_address{Immediate(static_cast<u32>(instr.al2p.address))};
const Node reg{GetRegister(instr.gpr8)};
const Node fake_address{Operation(OperationCode::IAdd, NO_PRECISE, reg, fixed_address)};
// Set the fake address to target register.
SetRegister(bb, instr.gpr0, fake_address);
// Signal the shader IR to declare all possible attributes and varyings
uses_physical_attributes = true;
break;
}
default:
UNIMPLEMENTED_MSG("Unhandled memory instruction: {}", opcode->get().GetName());
}

13
src/video_core/shader/decode/other.cpp
View file

@ -130,15 +130,18 @@ u32 ShaderIR::DecodeOther(NodeBlock& bb, u32 pc) {
break;
}
case OpCode::Id::IPA: {
const auto& attribute = instr.attribute.fmt28;
const bool is_physical = instr.ipa.idx && instr.gpr8.Value() != 0xff;
const auto attribute = instr.attribute.fmt28;
const Tegra::Shader::IpaMode input_mode{instr.ipa.interp_mode.Value(),
instr.ipa.sample_mode.Value()};
const Node attr = GetInputAttribute(attribute.index, attribute.element, input_mode);
Node value = attr;
Node value = is_physical ? GetPhysicalInputAttribute(instr.gpr8)
: GetInputAttribute(attribute.index, attribute.element);
const Tegra::Shader::Attribute::Index index = attribute.index.Value();
if (index >= Tegra::Shader::Attribute::Index::Attribute_0 &&
index <= Tegra::Shader::Attribute::Index::Attribute_31) {
const bool is_generic = index >= Tegra::Shader::Attribute::Index::Attribute_0 &&
index <= Tegra::Shader::Attribute::Index::Attribute_31;
if (is_generic || is_physical) {
// TODO(Blinkhawk): There are cases where a perspective attribute use PASS.
// In theory by setting them as perspective, OpenGL does the perspective correction.
// A way must figured to reverse the last step of it.

13
src/video_core/shader/shader_ir.cpp
View file

@ -96,13 +96,14 @@ Node ShaderIR::GetPredicate(bool immediate) {
return GetPredicate(static_cast<u64>(immediate ? Pred::UnusedIndex : Pred::NeverExecute));
}
Node ShaderIR::GetInputAttribute(Attribute::Index index, u64 element,
const Tegra::Shader::IpaMode& input_mode, Node buffer) {
const auto [entry, is_new] =
used_input_attributes.emplace(std::make_pair(index, std::set<Tegra::Shader::IpaMode>{}));
entry->second.insert(input_mode);
Node ShaderIR::GetInputAttribute(Attribute::Index index, u64 element, Node buffer) {
used_input_attributes.emplace(index);
return StoreNode(AbufNode(index, static_cast<u32>(element), buffer));
}
return StoreNode(AbufNode(index, static_cast<u32>(element), input_mode, buffer));
Node ShaderIR::GetPhysicalInputAttribute(Tegra::Shader::Register physical_address, Node buffer) {
uses_physical_attributes = true;
return StoreNode(AbufNode(GetRegister(physical_address), buffer));
}
Node ShaderIR::GetOutputAttribute(Attribute::Index index, u64 element, Node buffer) {

45
src/video_core/shader/shader_ir.h
View file

@ -456,17 +456,14 @@ private:
/// Attribute buffer memory (known as attributes or varyings in GLSL terms)
class AbufNode final {
public:
explicit constexpr AbufNode(Tegra::Shader::Attribute::Index index, u32 element,
const Tegra::Shader::IpaMode& input_mode, Node buffer = {})
: input_mode{input_mode}, buffer{buffer}, index{index}, element{element} {}
// Initialize for standard attributes (index is explicit).
explicit constexpr AbufNode(Tegra::Shader::Attribute::Index index, u32 element,
Node buffer = {})
: input_mode{}, buffer{buffer}, index{index}, element{element} {}
: buffer{buffer}, index{index}, element{element} {}
Tegra::Shader::IpaMode GetInputMode() const {
return input_mode;
}
// Initialize for physical attributes (index is a variable value).
explicit constexpr AbufNode(Node physical_address, Node buffer = {})
: physical_address{physical_address}, buffer{buffer} {}
Tegra::Shader::Attribute::Index GetIndex() const {
return index;
@ -480,11 +477,19 @@ public:
return buffer;
}
bool IsPhysicalBuffer() const {
return physical_address != nullptr;
}
Node GetPhysicalAddress() const {
return physical_address;
}
private:
const Tegra::Shader::IpaMode input_mode;
const Node buffer;
const Tegra::Shader::Attribute::Index index;
const u32 element;
Node physical_address{};
Node buffer{};
Tegra::Shader::Attribute::Index index{};
u32 element{};
};
/// Constant buffer node, usually mapped to uniform buffers in GLSL
@ -573,8 +578,7 @@ public:
return used_predicates;
}
const std::map<Tegra::Shader::Attribute::Index, std::set<Tegra::Shader::IpaMode>>&
GetInputAttributes() const {
const std::set<Tegra::Shader::Attribute::Index>& GetInputAttributes() const {
return used_input_attributes;
}
@ -603,6 +607,10 @@ public:
return static_cast<std::size_t>(coverage_end * sizeof(u64));
}
bool HasPhysicalAttributes() const {
return uses_physical_attributes;
}
const Tegra::Shader::Header& GetHeader() const {
return header;
}
@ -684,8 +692,9 @@ private:
/// Generates a predicate node for an immediate true or false value
Node GetPredicate(bool immediate);
/// Generates a node representing an input attribute. Keeps track of used attributes.
Node GetInputAttribute(Tegra::Shader::Attribute::Index index, u64 element,
const Tegra::Shader::IpaMode& input_mode, Node buffer = {});
Node GetInputAttribute(Tegra::Shader::Attribute::Index index, u64 element, Node buffer = {});
/// Generates a node representing a physical input attribute.
Node GetPhysicalInputAttribute(Tegra::Shader::Register physical_address, Node buffer = {});
/// Generates a node representing an output attribute. Keeps track of used attributes.
Node GetOutputAttribute(Tegra::Shader::Attribute::Index index, u64 element, Node buffer);
/// Generates a node representing an internal flag
@ -859,13 +868,13 @@ private:
std::set<u32> used_registers;
std::set<Tegra::Shader::Pred> used_predicates;
std::map<Tegra::Shader::Attribute::Index, std::set<Tegra::Shader::IpaMode>>
used_input_attributes;
std::set<Tegra::Shader::Attribute::Index> used_input_attributes;
std::set<Tegra::Shader::Attribute::Index> used_output_attributes;
std::map<u32, ConstBuffer> used_cbufs;
std::set<Sampler> used_samplers;
std::array<bool, Tegra::Engines::Maxwell3D::Regs::NumClipDistances> used_clip_distances{};
std::map<GlobalMemoryBase, GlobalMemoryUsage> used_global_memory;
bool uses_physical_attributes{}; // Shader uses AL2P or physical attribute read/writes
Tegra::Shader::Header header;
};