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suyu/src/video_core/shader/control_flow.h

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#pragma once
#include <cstring>
#include <list>
#include <optional>
#include <vector>
#include "video_core/engines/shader_bytecode.h"
#include "video_core/shader/shader_ir.h"
namespace VideoCommon::Shader {
using Tegra::Shader::ConditionCode;
using Tegra::Shader::Pred;
constexpr s32 exit_branch = -1;
struct Condition {
Pred predicate{Pred::UnusedIndex};
ConditionCode cc{ConditionCode::T};
bool IsUnconditional() const {
return (predicate == Pred::UnusedIndex) && (cc == ConditionCode::T);
}
};
struct ShaderBlock {
ShaderBlock() {}
ShaderBlock(const ShaderBlock& sb) = default;
u32 start{};
u32 end{};
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bool ignore_branch{};
struct Branch {
Condition cond{};
bool kills{};
s32 address{};
bool operator==(const Branch& b) const {
return std::memcmp(this, &b, sizeof(Branch)) == 0;
}
} branch;
bool operator==(const ShaderBlock& sb) const {
return std::memcmp(this, &sb, sizeof(ShaderBlock)) == 0;
}
};
struct ShaderCharacteristics {
std::list<ShaderBlock> blocks;
bool decompilable{};
u32 start;
u32 end;
};
bool ScanFlow(const ProgramCode& program_code, u32 program_size, u32 start_address,
ShaderCharacteristics& result_out);
} // namespace VideoCommon::Shader