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https://github.com/dolphin-emu/dolphin.git
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0bcd3c79bb
DataReader is generally jank - it has a start and end pointer, but the end pointer is generally not used, and all of the vertex loaders mostly bypassed it anyways. Wrapper code (the vertex loaer test, as well as Fifo.cpp and OpcodeDecoding.cpp) still uses it, as does the software vertex loader (which is not a subclass of VertexLoader). These can probably be eliminated later.
114 lines
3.9 KiB
C++
114 lines
3.9 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_Position.h"
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#include <limits>
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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 "Common/Swap.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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#include "VideoCommon/VideoCommon.h"
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namespace
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{
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template <typename T>
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constexpr float PosScale(T val, float scale)
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{
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return val * scale;
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}
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template <>
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constexpr float PosScale(float val, [[maybe_unused]] float scale)
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{
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return val;
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}
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template <typename T, int N>
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void Pos_ReadDirect(VertexLoader* loader)
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{
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static_assert(N <= 3, "N > 3 is not sane!");
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const auto scale = loader->m_posScale;
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for (int i = 0; i < N; ++i)
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{
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const float value = PosScale(DataRead<T>(), scale);
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if (loader->m_remaining < 3)
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VertexLoaderManager::position_cache[loader->m_remaining][i] = value;
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DataWrite(value);
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}
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LOG_VTX();
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}
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template <typename I, typename T, int N>
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void Pos_ReadIndex(VertexLoader* loader)
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{
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static_assert(std::is_unsigned<I>::value, "Only unsigned I is sane!");
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static_assert(N <= 3, "N > 3 is not sane!");
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const auto index = DataRead<I>();
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loader->m_vertexSkip = index == std::numeric_limits<I>::max();
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const auto data =
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reinterpret_cast<const T*>(VertexLoaderManager::cached_arraybases[CPArray::Position] +
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(index * g_main_cp_state.array_strides[CPArray::Position]));
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const auto scale = loader->m_posScale;
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for (int i = 0; i < N; ++i)
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{
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const float value = PosScale(Common::FromBigEndian(data[i]), scale);
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if (loader->m_remaining < 3)
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VertexLoaderManager::position_cache[loader->m_remaining][i] = value;
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DataWrite(value);
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}
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LOG_VTX();
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}
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using ComponentCountRow = Common::EnumMap<TPipelineFunction, CoordComponentCount::XYZ>;
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using ComponentFormatTable = Common::EnumMap<ComponentCountRow, ComponentFormat::Float>;
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using Table = Common::EnumMap<ComponentFormatTable, VertexComponentFormat::Index16>;
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constexpr Table s_table_read_position = {
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ComponentFormatTable({
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ComponentCountRow(nullptr, nullptr),
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ComponentCountRow(nullptr, nullptr),
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ComponentCountRow(nullptr, nullptr),
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ComponentCountRow(nullptr, nullptr),
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ComponentCountRow(nullptr, nullptr),
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}),
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ComponentFormatTable({
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ComponentCountRow(Pos_ReadDirect<u8, 2>, Pos_ReadDirect<u8, 3>),
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ComponentCountRow(Pos_ReadDirect<s8, 2>, Pos_ReadDirect<s8, 3>),
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ComponentCountRow(Pos_ReadDirect<u16, 2>, Pos_ReadDirect<u16, 3>),
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ComponentCountRow(Pos_ReadDirect<s16, 2>, Pos_ReadDirect<s16, 3>),
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ComponentCountRow(Pos_ReadDirect<float, 2>, Pos_ReadDirect<float, 3>),
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}),
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ComponentFormatTable({
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ComponentCountRow(Pos_ReadIndex<u8, u8, 2>, Pos_ReadIndex<u8, u8, 3>),
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ComponentCountRow(Pos_ReadIndex<u8, s8, 2>, Pos_ReadIndex<u8, s8, 3>),
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ComponentCountRow(Pos_ReadIndex<u8, u16, 2>, Pos_ReadIndex<u8, u16, 3>),
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ComponentCountRow(Pos_ReadIndex<u8, s16, 2>, Pos_ReadIndex<u8, s16, 3>),
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ComponentCountRow(Pos_ReadIndex<u8, float, 2>, Pos_ReadIndex<u8, float, 3>),
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}),
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ComponentFormatTable({
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ComponentCountRow(Pos_ReadIndex<u16, u8, 2>, Pos_ReadIndex<u16, u8, 3>),
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ComponentCountRow(Pos_ReadIndex<u16, s8, 2>, Pos_ReadIndex<u16, s8, 3>),
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ComponentCountRow(Pos_ReadIndex<u16, u16, 2>, Pos_ReadIndex<u16, u16, 3>),
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ComponentCountRow(Pos_ReadIndex<u16, s16, 2>, Pos_ReadIndex<u16, s16, 3>),
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ComponentCountRow(Pos_ReadIndex<u16, float, 2>, Pos_ReadIndex<u16, float, 3>),
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}),
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};
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} // Anonymous namespace
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TPipelineFunction VertexLoader_Position::GetFunction(VertexComponentFormat type,
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ComponentFormat format,
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CoordComponentCount elements)
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{
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return s_table_read_position[type][format][elements];
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}
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