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194 lines
8.4 KiB
C++
194 lines
8.4 KiB
C++
// Copyright 2008 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "VideoCommon/VertexLoader_Normal.h"
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#include <array>
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#include <type_traits>
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#include "Common/CommonTypes.h"
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#include "Common/EnumMap.h"
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#include "VideoCommon/DataReader.h"
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#include "VideoCommon/VertexLoader.h"
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#include "VideoCommon/VertexLoaderManager.h"
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#include "VideoCommon/VertexLoaderUtils.h"
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// warning: mapping buffer should be disabled to use this
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#define LOG_NORM() // PRIM_LOG("norm: {} {} {}, ", ((float*)g_vertex_manager_write_ptr)[-3],
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// ((float*)g_vertex_manager_write_ptr)[-2],
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// ((float*)g_vertex_manager_write_ptr)[-1]);
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namespace
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{
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template <typename T>
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constexpr float FracAdjust(T val)
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{
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// auto const S8FRAC = 1.f / (1u << 6);
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// auto const U8FRAC = 1.f / (1u << 7);
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// auto const S16FRAC = 1.f / (1u << 14);
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// auto const U16FRAC = 1.f / (1u << 15);
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// TODO: is this right?
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return val / float(1u << (sizeof(T) * 8 - std::is_signed_v<T> - 1));
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}
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template <>
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constexpr float FracAdjust(float val)
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{
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return val;
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}
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template <typename T, u32 N>
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void ReadIndirect(VertexLoader* loader, const T* data)
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{
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static_assert(3 == N || 9 == N, "N is only sane as 3 or 9!");
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DataReader dst(g_vertex_manager_write_ptr, nullptr);
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for (u32 i = 0; i < N; ++i)
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{
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const float value = FracAdjust(Common::FromBigEndian(data[i]));
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if (loader->m_remaining == 0)
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{
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if (i >= 3 && i < 6)
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VertexLoaderManager::tangent_cache[i - 3] = value;
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else if (i >= 6 && i < 9)
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VertexLoaderManager::binormal_cache[i - 6] = value;
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}
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dst.Write(value);
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}
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g_vertex_manager_write_ptr = dst.GetPointer();
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LOG_NORM();
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}
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template <typename T, u32 N>
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void Normal_ReadDirect(VertexLoader* loader)
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{
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const auto source = reinterpret_cast<const T*>(DataGetPosition());
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ReadIndirect<T, N * 3>(loader, source);
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DataSkip<N * 3 * sizeof(T)>();
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}
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template <typename I, typename T, u32 N, u32 Offset>
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void Normal_ReadIndex_Offset(VertexLoader* loader)
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{
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static_assert(std::is_unsigned_v<I>, "Only unsigned I is sane!");
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const auto index = DataRead<I>();
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const auto data = reinterpret_cast<const T*>(
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VertexLoaderManager::cached_arraybases[CPArray::Normal] +
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(index * g_main_cp_state.array_strides[CPArray::Normal]) + sizeof(T) * 3 * Offset);
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ReadIndirect<T, N * 3>(loader, data);
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}
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template <typename I, typename T, u32 N>
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void Normal_ReadIndex(VertexLoader* loader)
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{
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Normal_ReadIndex_Offset<I, T, N, 0>(loader);
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}
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template <typename I, typename T>
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void Normal_ReadIndex_Indices3(VertexLoader* loader)
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{
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Normal_ReadIndex_Offset<I, T, 1, 0>(loader);
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Normal_ReadIndex_Offset<I, T, 1, 1>(loader);
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Normal_ReadIndex_Offset<I, T, 1, 2>(loader);
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}
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using Common::EnumMap;
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using Formats = EnumMap<TPipelineFunction, ComponentFormat::Float>;
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using Elements = EnumMap<Formats, NormalComponentCount::NTB>;
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using Indices = std::array<Elements, 2>;
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using Types = EnumMap<Indices, VertexComponentFormat::Index16>;
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consteval Types InitializeTable()
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{
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Types table{};
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using VCF = VertexComponentFormat;
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using NCC = NormalComponentCount;
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using FMT = ComponentFormat;
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table[VCF::Direct][false][NCC::N][FMT::UByte] = Normal_ReadDirect<u8, 1>;
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table[VCF::Direct][false][NCC::N][FMT::Byte] = Normal_ReadDirect<s8, 1>;
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table[VCF::Direct][false][NCC::N][FMT::UShort] = Normal_ReadDirect<u16, 1>;
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table[VCF::Direct][false][NCC::N][FMT::Short] = Normal_ReadDirect<s16, 1>;
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table[VCF::Direct][false][NCC::N][FMT::Float] = Normal_ReadDirect<float, 1>;
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table[VCF::Direct][false][NCC::NTB][FMT::UByte] = Normal_ReadDirect<u8, 3>;
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table[VCF::Direct][false][NCC::NTB][FMT::Byte] = Normal_ReadDirect<s8, 3>;
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table[VCF::Direct][false][NCC::NTB][FMT::UShort] = Normal_ReadDirect<u16, 3>;
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table[VCF::Direct][false][NCC::NTB][FMT::Short] = Normal_ReadDirect<s16, 3>;
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table[VCF::Direct][false][NCC::NTB][FMT::Float] = Normal_ReadDirect<float, 3>;
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// Same as above, since there are no indices
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table[VCF::Direct][true][NCC::N][FMT::UByte] = Normal_ReadDirect<u8, 1>;
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table[VCF::Direct][true][NCC::N][FMT::Byte] = Normal_ReadDirect<s8, 1>;
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table[VCF::Direct][true][NCC::N][FMT::UShort] = Normal_ReadDirect<u16, 1>;
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table[VCF::Direct][true][NCC::N][FMT::Short] = Normal_ReadDirect<s16, 1>;
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table[VCF::Direct][true][NCC::N][FMT::Float] = Normal_ReadDirect<float, 1>;
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table[VCF::Direct][true][NCC::NTB][FMT::UByte] = Normal_ReadDirect<u8, 3>;
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table[VCF::Direct][true][NCC::NTB][FMT::Byte] = Normal_ReadDirect<s8, 3>;
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table[VCF::Direct][true][NCC::NTB][FMT::UShort] = Normal_ReadDirect<u16, 3>;
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table[VCF::Direct][true][NCC::NTB][FMT::Short] = Normal_ReadDirect<s16, 3>;
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table[VCF::Direct][true][NCC::NTB][FMT::Float] = Normal_ReadDirect<float, 3>;
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table[VCF::Index8][false][NCC::N][FMT::UByte] = Normal_ReadIndex<u8, u8, 1>;
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table[VCF::Index8][false][NCC::N][FMT::Byte] = Normal_ReadIndex<u8, s8, 1>;
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table[VCF::Index8][false][NCC::N][FMT::UShort] = Normal_ReadIndex<u8, u16, 1>;
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table[VCF::Index8][false][NCC::N][FMT::Short] = Normal_ReadIndex<u8, s16, 1>;
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table[VCF::Index8][false][NCC::N][FMT::Float] = Normal_ReadIndex<u8, float, 1>;
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table[VCF::Index8][false][NCC::NTB][FMT::UByte] = Normal_ReadIndex<u8, u8, 3>;
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table[VCF::Index8][false][NCC::NTB][FMT::Byte] = Normal_ReadIndex<u8, s8, 3>;
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table[VCF::Index8][false][NCC::NTB][FMT::UShort] = Normal_ReadIndex<u8, u16, 3>;
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table[VCF::Index8][false][NCC::NTB][FMT::Short] = Normal_ReadIndex<u8, s16, 3>;
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table[VCF::Index8][false][NCC::NTB][FMT::Float] = Normal_ReadIndex<u8, float, 3>;
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// Same for NormalComponentCount::N; differs for NTB
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table[VCF::Index8][true][NCC::N][FMT::UByte] = Normal_ReadIndex<u8, u8, 1>;
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table[VCF::Index8][true][NCC::N][FMT::Byte] = Normal_ReadIndex<u8, s8, 1>;
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table[VCF::Index8][true][NCC::N][FMT::UShort] = Normal_ReadIndex<u8, u16, 1>;
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table[VCF::Index8][true][NCC::N][FMT::Short] = Normal_ReadIndex<u8, s16, 1>;
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table[VCF::Index8][true][NCC::N][FMT::Float] = Normal_ReadIndex<u8, float, 1>;
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table[VCF::Index8][true][NCC::NTB][FMT::UByte] = Normal_ReadIndex_Indices3<u8, u8>;
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table[VCF::Index8][true][NCC::NTB][FMT::Byte] = Normal_ReadIndex_Indices3<u8, s8>;
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table[VCF::Index8][true][NCC::NTB][FMT::UShort] = Normal_ReadIndex_Indices3<u8, u16>;
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table[VCF::Index8][true][NCC::NTB][FMT::Short] = Normal_ReadIndex_Indices3<u8, s16>;
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table[VCF::Index8][true][NCC::NTB][FMT::Float] = Normal_ReadIndex_Indices3<u8, float>;
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table[VCF::Index16][false][NCC::N][FMT::UByte] = Normal_ReadIndex<u16, u8, 1>;
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table[VCF::Index16][false][NCC::N][FMT::Byte] = Normal_ReadIndex<u16, s8, 1>;
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table[VCF::Index16][false][NCC::N][FMT::UShort] = Normal_ReadIndex<u16, u16, 1>;
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table[VCF::Index16][false][NCC::N][FMT::Short] = Normal_ReadIndex<u16, s16, 1>;
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table[VCF::Index16][false][NCC::N][FMT::Float] = Normal_ReadIndex<u16, float, 1>;
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table[VCF::Index16][false][NCC::NTB][FMT::UByte] = Normal_ReadIndex<u16, u8, 3>;
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table[VCF::Index16][false][NCC::NTB][FMT::Byte] = Normal_ReadIndex<u16, s8, 3>;
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table[VCF::Index16][false][NCC::NTB][FMT::UShort] = Normal_ReadIndex<u16, u16, 3>;
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table[VCF::Index16][false][NCC::NTB][FMT::Short] = Normal_ReadIndex<u16, s16, 3>;
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table[VCF::Index16][false][NCC::NTB][FMT::Float] = Normal_ReadIndex<u16, float, 3>;
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// Same for NormalComponentCount::N; differs for NTB
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table[VCF::Index16][true][NCC::N][FMT::UByte] = Normal_ReadIndex<u16, u8, 1>;
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table[VCF::Index16][true][NCC::N][FMT::Byte] = Normal_ReadIndex<u16, s8, 1>;
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table[VCF::Index16][true][NCC::N][FMT::UShort] = Normal_ReadIndex<u16, u16, 1>;
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table[VCF::Index16][true][NCC::N][FMT::Short] = Normal_ReadIndex<u16, s16, 1>;
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table[VCF::Index16][true][NCC::N][FMT::Float] = Normal_ReadIndex<u16, float, 1>;
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table[VCF::Index16][true][NCC::NTB][FMT::UByte] = Normal_ReadIndex_Indices3<u16, u8>;
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table[VCF::Index16][true][NCC::NTB][FMT::Byte] = Normal_ReadIndex_Indices3<u16, s8>;
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table[VCF::Index16][true][NCC::NTB][FMT::UShort] = Normal_ReadIndex_Indices3<u16, u16>;
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table[VCF::Index16][true][NCC::NTB][FMT::Short] = Normal_ReadIndex_Indices3<u16, s16>;
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table[VCF::Index16][true][NCC::NTB][FMT::Float] = Normal_ReadIndex_Indices3<u16, float>;
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return table;
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}
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constexpr Types s_table_read_normal = InitializeTable();
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} // Anonymous namespace
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TPipelineFunction VertexLoader_Normal::GetFunction(VertexComponentFormat type,
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ComponentFormat format,
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NormalComponentCount elements, bool index3)
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{
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return s_table_read_normal[type][index3][elements][format];
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}
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