dolphin/Source/Core/VideoCommon/VertexLoader_Normal.cpp

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// Copyright 2008 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "VideoCommon/VertexLoader_Normal.h"
#include <array>
#include <type_traits>
#include "Common/CommonTypes.h"
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#include "Common/EnumMap.h"
#include "VideoCommon/DataReader.h"
#include "VideoCommon/VertexLoader.h"
#include "VideoCommon/VertexLoaderManager.h"
#include "VideoCommon/VertexLoaderUtils.h"
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// warning: mapping buffer should be disabled to use this
#define LOG_NORM() // PRIM_LOG("norm: {} {} {}, ", ((float*)g_vertex_manager_write_ptr)[-3],
// ((float*)g_vertex_manager_write_ptr)[-2],
// ((float*)g_vertex_manager_write_ptr)[-1]);
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namespace
{
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template <typename T>
constexpr float FracAdjust(T val)
{
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// auto const S8FRAC = 1.f / (1u << 6);
// auto const U8FRAC = 1.f / (1u << 7);
// auto const S16FRAC = 1.f / (1u << 14);
// auto const U16FRAC = 1.f / (1u << 15);
// TODO: is this right?
return val / float(1u << (sizeof(T) * 8 - std::is_signed_v<T> - 1));
}
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template <>
constexpr float FracAdjust(float val)
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{
return val;
}
template <typename T, u32 N>
void ReadIndirect(const T* data)
{
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static_assert(3 == N || 9 == N, "N is only sane as 3 or 9!");
DataReader dst(g_vertex_manager_write_ptr, nullptr);
for (u32 i = 0; i < N; ++i)
{
dst.Write(FracAdjust(Common::FromBigEndian(data[i])));
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}
g_vertex_manager_write_ptr = dst.GetPointer();
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LOG_NORM();
}
template <typename T, u32 N>
struct Normal_Direct
{
static void function([[maybe_unused]] VertexLoader* loader)
{
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const auto source = reinterpret_cast<const T*>(DataGetPosition());
ReadIndirect<T, N * 3>(source);
DataSkip<N * 3 * sizeof(T)>();
}
static constexpr u32 size = sizeof(T) * N * 3;
};
template <typename I, typename T, u32 N, u32 Offset>
void Normal_Index_Offset()
{
static_assert(std::is_unsigned_v<I>, "Only unsigned I is sane!");
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const auto index = DataRead<I>();
const auto data = reinterpret_cast<const T*>(
VertexLoaderManager::cached_arraybases[CPArray::Normal] +
(index * g_main_cp_state.array_strides[CPArray::Normal]) + sizeof(T) * 3 * Offset);
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ReadIndirect<T, N * 3>(data);
}
template <typename I, typename T, u32 N>
struct Normal_Index
{
static void function([[maybe_unused]] VertexLoader* loader) { Normal_Index_Offset<I, T, N, 0>(); }
static constexpr u32 size = sizeof(I);
};
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template <typename I, typename T>
struct Normal_Index_Indices3
{
static void function([[maybe_unused]] VertexLoader* loader)
{
Normal_Index_Offset<I, T, 1, 0>();
Normal_Index_Offset<I, T, 1, 1>();
Normal_Index_Offset<I, T, 1, 2>();
}
static constexpr u32 size = sizeof(I) * 3;
};
struct Set
{
template <typename T>
constexpr Set& operator=(const T&)
{
gc_size = T::size;
function = T::function;
return *this;
}
u32 gc_size;
TPipelineFunction function;
};
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using Common::EnumMap;
using Formats = EnumMap<Set, ComponentFormat::Float>;
using Elements = EnumMap<Formats, NormalComponentCount::NBT>;
using Indices = std::array<Elements, 2>;
using Types = EnumMap<Indices, VertexComponentFormat::Index16>;
constexpr Types InitializeTable()
{
Types table{};
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using VCF = VertexComponentFormat;
using NCC = NormalComponentCount;
using FMT = ComponentFormat;
table[VCF::Direct][false][NCC::N][FMT::UByte] = Normal_Direct<u8, 1>();
table[VCF::Direct][false][NCC::N][FMT::Byte] = Normal_Direct<s8, 1>();
table[VCF::Direct][false][NCC::N][FMT::UShort] = Normal_Direct<u16, 1>();
table[VCF::Direct][false][NCC::N][FMT::Short] = Normal_Direct<s16, 1>();
table[VCF::Direct][false][NCC::N][FMT::Float] = Normal_Direct<float, 1>();
table[VCF::Direct][false][NCC::NBT][FMT::UByte] = Normal_Direct<u8, 3>();
table[VCF::Direct][false][NCC::NBT][FMT::Byte] = Normal_Direct<s8, 3>();
table[VCF::Direct][false][NCC::NBT][FMT::UShort] = Normal_Direct<u16, 3>();
table[VCF::Direct][false][NCC::NBT][FMT::Short] = Normal_Direct<s16, 3>();
table[VCF::Direct][false][NCC::NBT][FMT::Float] = Normal_Direct<float, 3>();
// Same as above, since there are no indices
table[VCF::Direct][true][NCC::N][FMT::UByte] = Normal_Direct<u8, 1>();
table[VCF::Direct][true][NCC::N][FMT::Byte] = Normal_Direct<s8, 1>();
table[VCF::Direct][true][NCC::N][FMT::UShort] = Normal_Direct<u16, 1>();
table[VCF::Direct][true][NCC::N][FMT::Short] = Normal_Direct<s16, 1>();
table[VCF::Direct][true][NCC::N][FMT::Float] = Normal_Direct<float, 1>();
table[VCF::Direct][true][NCC::NBT][FMT::UByte] = Normal_Direct<u8, 3>();
table[VCF::Direct][true][NCC::NBT][FMT::Byte] = Normal_Direct<s8, 3>();
table[VCF::Direct][true][NCC::NBT][FMT::UShort] = Normal_Direct<u16, 3>();
table[VCF::Direct][true][NCC::NBT][FMT::Short] = Normal_Direct<s16, 3>();
table[VCF::Direct][true][NCC::NBT][FMT::Float] = Normal_Direct<float, 3>();
table[VCF::Index8][false][NCC::N][FMT::UByte] = Normal_Index<u8, u8, 1>();
table[VCF::Index8][false][NCC::N][FMT::Byte] = Normal_Index<u8, s8, 1>();
table[VCF::Index8][false][NCC::N][FMT::UShort] = Normal_Index<u8, u16, 1>();
table[VCF::Index8][false][NCC::N][FMT::Short] = Normal_Index<u8, s16, 1>();
table[VCF::Index8][false][NCC::N][FMT::Float] = Normal_Index<u8, float, 1>();
table[VCF::Index8][false][NCC::NBT][FMT::UByte] = Normal_Index<u8, u8, 3>();
table[VCF::Index8][false][NCC::NBT][FMT::Byte] = Normal_Index<u8, s8, 3>();
table[VCF::Index8][false][NCC::NBT][FMT::UShort] = Normal_Index<u8, u16, 3>();
table[VCF::Index8][false][NCC::NBT][FMT::Short] = Normal_Index<u8, s16, 3>();
table[VCF::Index8][false][NCC::NBT][FMT::Float] = Normal_Index<u8, float, 3>();
// Same for NormalComponentCount::N; differs for NBT
table[VCF::Index8][true][NCC::N][FMT::UByte] = Normal_Index<u8, u8, 1>();
table[VCF::Index8][true][NCC::N][FMT::Byte] = Normal_Index<u8, s8, 1>();
table[VCF::Index8][true][NCC::N][FMT::UShort] = Normal_Index<u8, u16, 1>();
table[VCF::Index8][true][NCC::N][FMT::Short] = Normal_Index<u8, s16, 1>();
table[VCF::Index8][true][NCC::N][FMT::Float] = Normal_Index<u8, float, 1>();
table[VCF::Index8][true][NCC::NBT][FMT::UByte] = Normal_Index_Indices3<u8, u8>();
table[VCF::Index8][true][NCC::NBT][FMT::Byte] = Normal_Index_Indices3<u8, s8>();
table[VCF::Index8][true][NCC::NBT][FMT::UShort] = Normal_Index_Indices3<u8, u16>();
table[VCF::Index8][true][NCC::NBT][FMT::Short] = Normal_Index_Indices3<u8, s16>();
table[VCF::Index8][true][NCC::NBT][FMT::Float] = Normal_Index_Indices3<u8, float>();
table[VCF::Index16][false][NCC::N][FMT::UByte] = Normal_Index<u16, u8, 1>();
table[VCF::Index16][false][NCC::N][FMT::Byte] = Normal_Index<u16, s8, 1>();
table[VCF::Index16][false][NCC::N][FMT::UShort] = Normal_Index<u16, u16, 1>();
table[VCF::Index16][false][NCC::N][FMT::Short] = Normal_Index<u16, s16, 1>();
table[VCF::Index16][false][NCC::N][FMT::Float] = Normal_Index<u16, float, 1>();
table[VCF::Index16][false][NCC::NBT][FMT::UByte] = Normal_Index<u16, u8, 3>();
table[VCF::Index16][false][NCC::NBT][FMT::Byte] = Normal_Index<u16, s8, 3>();
table[VCF::Index16][false][NCC::NBT][FMT::UShort] = Normal_Index<u16, u16, 3>();
table[VCF::Index16][false][NCC::NBT][FMT::Short] = Normal_Index<u16, s16, 3>();
table[VCF::Index16][false][NCC::NBT][FMT::Float] = Normal_Index<u16, float, 3>();
// Same for NormalComponentCount::N; differs for NBT
table[VCF::Index16][true][NCC::N][FMT::UByte] = Normal_Index<u16, u8, 1>();
table[VCF::Index16][true][NCC::N][FMT::Byte] = Normal_Index<u16, s8, 1>();
table[VCF::Index16][true][NCC::N][FMT::UShort] = Normal_Index<u16, u16, 1>();
table[VCF::Index16][true][NCC::N][FMT::Short] = Normal_Index<u16, s16, 1>();
table[VCF::Index16][true][NCC::N][FMT::Float] = Normal_Index<u16, float, 1>();
table[VCF::Index16][true][NCC::NBT][FMT::UByte] = Normal_Index_Indices3<u16, u8>();
table[VCF::Index16][true][NCC::NBT][FMT::Byte] = Normal_Index_Indices3<u16, s8>();
table[VCF::Index16][true][NCC::NBT][FMT::UShort] = Normal_Index_Indices3<u16, u16>();
table[VCF::Index16][true][NCC::NBT][FMT::Short] = Normal_Index_Indices3<u16, s16>();
table[VCF::Index16][true][NCC::NBT][FMT::Float] = Normal_Index_Indices3<u16, float>();
return table;
}
constexpr Types s_table = InitializeTable();
} // Anonymous namespace
u32 VertexLoader_Normal::GetSize(VertexComponentFormat type, ComponentFormat format,
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NormalComponentCount elements, bool index3)
{
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return s_table[type][index3][elements][format].gc_size;
}
TPipelineFunction VertexLoader_Normal::GetFunction(VertexComponentFormat type,
ComponentFormat format,
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NormalComponentCount elements, bool index3)
{
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return s_table[type][index3][elements][format].function;
}