115 lines
3.9 KiB
C++
115 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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