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// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include <type_traits>
#include "Common/CommonTypes.h"
#include "VideoCommon/VertexLoader.h"
#include "VideoCommon/VertexLoader_Position.h"
#include "VideoCommon/VertexManagerBase.h"
#include "VideoCommon/VideoCommon.h"
template <typename T>
float PosScale(T val, float scale)
{
return val * scale;
}
template <>
float PosScale(float val, float scale)
{
return val;
}
template <typename T, int N>
void LOADERDECL Pos_ReadDirect(VertexLoader* loader)
{
static_assert(N <= 3, "N > 3 is not sane!");
auto const scale = loader->m_posScale;
DataReader dst(g_vertex_manager_write_ptr, nullptr);
DataReader src(g_video_buffer_read_ptr, nullptr);
for (int i = 0; i < 3; ++i)
dst.Write(i<N ? PosScale(src.Read<T>(), scale) : 0.f);
g_vertex_manager_write_ptr = dst.GetPointer();
g_video_buffer_read_ptr = src.GetPointer();
LOG_VTX();
}
template <typename I, typename T, int N>
void LOADERDECL Pos_ReadIndex(VertexLoader* loader)
{
static_assert(std::is_unsigned<I>::value, "Only unsigned I is sane!");
static_assert(N <= 3, "N > 3 is not sane!");
auto const index = DataRead<I>();
loader->m_vertexSkip = index == std::numeric_limits<I>::max();
auto const data = reinterpret_cast<const T*>(cached_arraybases[ARRAY_POSITION] + (index * g_main_cp_state.array_strides[ARRAY_POSITION]));
auto const scale = loader->m_posScale;
DataReader dst(g_vertex_manager_write_ptr, nullptr);
for (int i = 0; i < 3; ++i)
dst.Write(i<N ? PosScale(Common::FromBigEndian(data[i]), scale) : 0.f);
g_vertex_manager_write_ptr = dst.GetPointer();
LOG_VTX();
}
static TPipelineFunction tableReadPosition[4][8][2] = {
{
{nullptr, nullptr,},
{nullptr, nullptr,},
{nullptr, nullptr,},
{nullptr, nullptr,},
{nullptr, nullptr,},
},
{
{Pos_ReadDirect<u8, 2>, Pos_ReadDirect<u8, 3>,},
{Pos_ReadDirect<s8, 2>, Pos_ReadDirect<s8, 3>,},
{Pos_ReadDirect<u16, 2>, Pos_ReadDirect<u16, 3>,},
{Pos_ReadDirect<s16, 2>, Pos_ReadDirect<s16, 3>,},
{Pos_ReadDirect<float, 2>, Pos_ReadDirect<float, 3>,},
},
{
{Pos_ReadIndex<u8, u8, 2>, Pos_ReadIndex<u8, u8, 3>,},
{Pos_ReadIndex<u8, s8, 2>, Pos_ReadIndex<u8, s8, 3>,},
{Pos_ReadIndex<u8, u16, 2>, Pos_ReadIndex<u8, u16, 3>,},
{Pos_ReadIndex<u8, s16, 2>, Pos_ReadIndex<u8, s16, 3>,},
{Pos_ReadIndex<u8, float, 2>, Pos_ReadIndex<u8, float, 3>,},
},
{
{Pos_ReadIndex<u16, u8, 2>, Pos_ReadIndex<u16, u8, 3>,},
{Pos_ReadIndex<u16, s8, 2>, Pos_ReadIndex<u16, s8, 3>,},
{Pos_ReadIndex<u16, u16, 2>, Pos_ReadIndex<u16, u16, 3>,},
{Pos_ReadIndex<u16, s16, 2>, Pos_ReadIndex<u16, s16, 3>,},
{Pos_ReadIndex<u16, float, 2>, Pos_ReadIndex<u16, float, 3>,},
},
};
static int tableReadPositionVertexSize[4][8][2] = {
{
{0, 0,}, {0, 0,}, {0, 0,}, {0, 0,}, {0, 0,},
},
{
{2, 3,}, {2, 3,}, {4, 6,}, {4, 6,}, {8, 12,},
},
{
{1, 1,}, {1, 1,}, {1, 1,}, {1, 1,}, {1, 1,},
},
{
{2, 2,}, {2, 2,}, {2, 2,}, {2, 2,}, {2, 2,},
},
};
unsigned int VertexLoader_Position::GetSize(u64 _type, unsigned int _format, unsigned int _elements)
{
return tableReadPositionVertexSize[_type][_format][_elements];
}
TPipelineFunction VertexLoader_Position::GetFunction(u64 _type, unsigned int _format, unsigned int _elements)
{
return tableReadPosition[_type][_format][_elements];
}
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