forked from dolphin-emu/dolphin
127 lines
3.6 KiB
C++
127 lines
3.6 KiB
C++
// Copyright 2008 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <type_traits>
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#include "Common/Common.h"
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#include "Common/CommonTypes.h"
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#include "VideoCommon/VertexLoader.h"
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#include "VideoCommon/VertexLoader_Position.h"
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#include "VideoCommon/VertexLoaderManager.h"
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#include "VideoCommon/VertexManagerBase.h"
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#include "VideoCommon/VideoCommon.h"
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template <typename T>
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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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float PosScale(float val, 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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auto const scale = loader->m_posScale;
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DataReader dst(g_vertex_manager_write_ptr, nullptr);
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DataReader src(g_video_buffer_read_ptr, nullptr);
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for (int i = 0; i < N; ++i)
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{
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float value = PosScale(src.Read<T>(), scale);
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if (loader->m_counter < 3)
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VertexLoaderManager::position_cache[loader->m_counter][i] = value;
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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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g_video_buffer_read_ptr = src.GetPointer();
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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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auto const index = DataRead<I>();
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loader->m_vertexSkip = index == std::numeric_limits<I>::max();
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auto const data = reinterpret_cast<const T*>(VertexLoaderManager::cached_arraybases[ARRAY_POSITION] + (index * g_main_cp_state.array_strides[ARRAY_POSITION]));
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auto const scale = loader->m_posScale;
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DataReader dst(g_vertex_manager_write_ptr, nullptr);
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for (int i = 0; i < N; ++i)
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{
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float value = PosScale(Common::FromBigEndian(data[i]), scale);
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if (loader->m_counter < 3)
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VertexLoaderManager::position_cache[loader->m_counter][i] = value;
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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_VTX();
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}
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static TPipelineFunction tableReadPosition[4][8][2] = {
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{
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{nullptr, nullptr,},
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{nullptr, nullptr,},
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{nullptr, nullptr,},
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{nullptr, nullptr,},
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{nullptr, nullptr,},
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},
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{
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{Pos_ReadDirect<u8, 2>, Pos_ReadDirect<u8, 3>,},
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{Pos_ReadDirect<s8, 2>, Pos_ReadDirect<s8, 3>,},
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{Pos_ReadDirect<u16, 2>, Pos_ReadDirect<u16, 3>,},
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{Pos_ReadDirect<s16, 2>, Pos_ReadDirect<s16, 3>,},
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{Pos_ReadDirect<float, 2>, Pos_ReadDirect<float, 3>,},
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},
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{
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{Pos_ReadIndex<u8, u8, 2>, Pos_ReadIndex<u8, u8, 3>,},
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{Pos_ReadIndex<u8, s8, 2>, Pos_ReadIndex<u8, s8, 3>,},
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{Pos_ReadIndex<u8, u16, 2>, Pos_ReadIndex<u8, u16, 3>,},
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{Pos_ReadIndex<u8, s16, 2>, Pos_ReadIndex<u8, s16, 3>,},
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{Pos_ReadIndex<u8, float, 2>, Pos_ReadIndex<u8, float, 3>,},
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},
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{
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{Pos_ReadIndex<u16, u8, 2>, Pos_ReadIndex<u16, u8, 3>,},
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{Pos_ReadIndex<u16, s8, 2>, Pos_ReadIndex<u16, s8, 3>,},
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{Pos_ReadIndex<u16, u16, 2>, Pos_ReadIndex<u16, u16, 3>,},
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{Pos_ReadIndex<u16, s16, 2>, Pos_ReadIndex<u16, s16, 3>,},
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{Pos_ReadIndex<u16, float, 2>, Pos_ReadIndex<u16, float, 3>,},
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},
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};
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static int tableReadPositionVertexSize[4][8][2] = {
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{
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{0, 0,}, {0, 0,}, {0, 0,}, {0, 0,}, {0, 0,},
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},
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{
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{2, 3,}, {2, 3,}, {4, 6,}, {4, 6,}, {8, 12,},
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},
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{
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{1, 1,}, {1, 1,}, {1, 1,}, {1, 1,}, {1, 1,},
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},
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{
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{2, 2,}, {2, 2,}, {2, 2,}, {2, 2,}, {2, 2,},
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},
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};
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unsigned int VertexLoader_Position::GetSize(u64 _type, unsigned int _format, unsigned int _elements)
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{
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return tableReadPositionVertexSize[_type][_format][_elements];
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}
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TPipelineFunction VertexLoader_Position::GetFunction(u64 _type, unsigned int _format, unsigned int _elements)
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{
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return tableReadPosition[_type][_format][_elements];
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}
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