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| author | ReinUsesLisp <reinuseslisp@airmail.cc> | 2021-01-09 03:30:07 -0300 |
|---|---|---|
| committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-07-22 21:51:21 -0400 |
| commit | 2d48a7b4d0666ad16d03a22d85712617a0849046 (patch) | |
| tree | dd1069afca86f66e77e3438da77421a43adf5091 /src/shader_recompiler/frontend/maxwell/location.h | |
| parent | 75059c46d645e42e8da31fb97d003047c67b004b (diff) | |
shader: Initial recompiler work
Diffstat (limited to 'src/shader_recompiler/frontend/maxwell/location.h')
| -rw-r--r-- | src/shader_recompiler/frontend/maxwell/location.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/location.h b/src/shader_recompiler/frontend/maxwell/location.h new file mode 100644 index 0000000000..66b51a19e6 --- /dev/null +++ b/src/shader_recompiler/frontend/maxwell/location.h @@ -0,0 +1,106 @@ +// Copyright 2021 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include <compare> +#include <iterator> + +#include <fmt/format.h> + +#include "common/common_types.h" +#include "shader_recompiler/exception.h" + +namespace Shader::Maxwell { + +class Location { + static constexpr u32 VIRTUAL_OFFSET{std::numeric_limits<u32>::max()}; + +public: + constexpr Location() = default; + + constexpr Location(u32 initial_offset) : offset{initial_offset} { + if (initial_offset % 8 != 0) { + throw InvalidArgument("initial_offset={} is not a multiple of 8", initial_offset); + } + Align(); + } + + [[nodiscard]] constexpr u32 Offset() const noexcept { + return offset; + } + + [[nodiscard]] constexpr bool IsVirtual() const { + return offset == VIRTUAL_OFFSET; + } + + constexpr auto operator<=>(const Location&) const noexcept = default; + + constexpr Location operator++() noexcept { + const Location copy{*this}; + Step(); + return copy; + } + + constexpr Location operator++(int) noexcept { + Step(); + return *this; + } + + constexpr Location operator--() noexcept { + const Location copy{*this}; + Back(); + return copy; + } + + constexpr Location operator--(int) noexcept { + Back(); + return *this; + } + + constexpr Location operator+(int number) const { + Location new_pc{*this}; + while (number > 0) { + --number; + ++new_pc; + } + while (number < 0) { + ++number; + --new_pc; + } + return new_pc; + } + + constexpr Location operator-(int number) const { + return operator+(-number); + } + +private: + constexpr void Align() { + offset += offset % 32 == 0 ? 8 : 0; + } + + constexpr void Step() { + offset += 8 + (offset % 32 == 24 ? 8 : 0); + } + + constexpr void Back() { + offset -= 8 + (offset % 32 == 8 ? 8 : 0); + } + + u32 offset{VIRTUAL_OFFSET}; +}; + +} // namespace Shader::Maxwell + +template <> +struct fmt::formatter<Shader::Maxwell::Location> { + constexpr auto parse(format_parse_context& ctx) { + return ctx.begin(); + } + template <typename FormatContext> + auto format(const Shader::Maxwell::Location& location, FormatContext& ctx) { + return fmt::format_to(ctx.out(), "{:04x}", location.Offset()); + } +}; |