dolphin/Source/Core/VideoCommon/VertexLoader_TextCoord.cpp
Lioncash 552c0d8404 Common: Move byte swapping utilities into their own header
This moves all the byte swapping utilities into a header named Swap.h.

A dedicated header is much more preferable here due to the size of the
code itself. In general usage throughout the codebase, CommonFuncs.h was
generally only included for these functions anyway. These being in their
own header avoids dumping the lesser used utilities into scope. As well
as providing a localized area for more utilities related to byte
swapping in the future (should they be needed). This also makes it nicer
to identify which files depend on the byte swapping utilities in
particular.

Since this is a completely new header, moving the code uncovered a few
indirect includes, as well as making some other inclusions unnecessary.
2017-03-03 17:18:18 -05:00

247 lines
5.3 KiB
C++

// Copyright 2008 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "VideoCommon/VertexLoader_TextCoord.h"
#include <type_traits>
#include "Common/CommonTypes.h"
#include "Common/Swap.h"
#include "VideoCommon/DataReader.h"
#include "VideoCommon/VertexLoader.h"
#include "VideoCommon/VertexLoaderManager.h"
#include "VideoCommon/VertexLoaderUtils.h"
template <int N>
void LOG_TEX();
template <>
void LOG_TEX<1>()
{
// warning: mapping buffer should be disabled to use this
// PRIM_LOG("tex: %f, ", ((float*)g_vertex_manager_write_ptr)[-1]);
}
template <>
void LOG_TEX<2>()
{
// warning: mapping buffer should be disabled to use this
// PRIM_LOG("tex: %f %f, ", ((float*)g_vertex_manager_write_ptr)[-2],
// ((float*)g_vertex_manager_write_ptr)[-1]);
}
static void TexCoord_Read_Dummy(VertexLoader* loader)
{
loader->m_tcIndex++;
}
template <typename T>
float TCScale(T val, float scale)
{
return val * scale;
}
template <>
float TCScale(float val, float scale)
{
return val;
}
template <typename T, int N>
void TexCoord_ReadDirect(VertexLoader* loader)
{
auto const scale = loader->m_tcScale[loader->m_tcIndex];
DataReader dst(g_vertex_manager_write_ptr, nullptr);
DataReader src(g_video_buffer_read_ptr, nullptr);
for (int i = 0; i != N; ++i)
dst.Write(TCScale(src.Read<T>(), scale));
g_vertex_manager_write_ptr = dst.GetPointer();
g_video_buffer_read_ptr = src.GetPointer();
LOG_TEX<N>();
++loader->m_tcIndex;
}
template <typename I, typename T, int N>
void TexCoord_ReadIndex(VertexLoader* loader)
{
static_assert(std::is_unsigned<I>::value, "Only unsigned I is sane!");
auto const index = DataRead<I>();
auto const data = reinterpret_cast<const T*>(
VertexLoaderManager::cached_arraybases[ARRAY_TEXCOORD0 + loader->m_tcIndex] +
(index * g_main_cp_state.array_strides[ARRAY_TEXCOORD0 + loader->m_tcIndex]));
auto const scale = loader->m_tcScale[loader->m_tcIndex];
DataReader dst(g_vertex_manager_write_ptr, nullptr);
for (int i = 0; i != N; ++i)
dst.Write(TCScale(Common::FromBigEndian(data[i]), scale));
g_vertex_manager_write_ptr = dst.GetPointer();
LOG_TEX<N>();
++loader->m_tcIndex;
}
static TPipelineFunction tableReadTexCoord[4][8][2] = {
{
{
nullptr, nullptr,
},
{
nullptr, nullptr,
},
{
nullptr, nullptr,
},
{
nullptr, nullptr,
},
{
nullptr, nullptr,
},
},
{
{
TexCoord_ReadDirect<u8, 1>, TexCoord_ReadDirect<u8, 2>,
},
{
TexCoord_ReadDirect<s8, 1>, TexCoord_ReadDirect<s8, 2>,
},
{
TexCoord_ReadDirect<u16, 1>, TexCoord_ReadDirect<u16, 2>,
},
{
TexCoord_ReadDirect<s16, 1>, TexCoord_ReadDirect<s16, 2>,
},
{
TexCoord_ReadDirect<float, 1>, TexCoord_ReadDirect<float, 2>,
},
},
{
{
TexCoord_ReadIndex<u8, u8, 1>, TexCoord_ReadIndex<u8, u8, 2>,
},
{
TexCoord_ReadIndex<u8, s8, 1>, TexCoord_ReadIndex<u8, s8, 2>,
},
{
TexCoord_ReadIndex<u8, u16, 1>, TexCoord_ReadIndex<u8, u16, 2>,
},
{
TexCoord_ReadIndex<u8, s16, 1>, TexCoord_ReadIndex<u8, s16, 2>,
},
{
TexCoord_ReadIndex<u8, float, 1>, TexCoord_ReadIndex<u8, float, 2>,
},
},
{
{
TexCoord_ReadIndex<u16, u8, 1>, TexCoord_ReadIndex<u16, u8, 2>,
},
{
TexCoord_ReadIndex<u16, s8, 1>, TexCoord_ReadIndex<u16, s8, 2>,
},
{
TexCoord_ReadIndex<u16, u16, 1>, TexCoord_ReadIndex<u16, u16, 2>,
},
{
TexCoord_ReadIndex<u16, s16, 1>, TexCoord_ReadIndex<u16, s16, 2>,
},
{
TexCoord_ReadIndex<u16, float, 1>, TexCoord_ReadIndex<u16, float, 2>,
},
},
};
static int tableReadTexCoordVertexSize[4][8][2] = {
{
{
0, 0,
},
{
0, 0,
},
{
0, 0,
},
{
0, 0,
},
{
0, 0,
},
},
{
{
1, 2,
},
{
1, 2,
},
{
2, 4,
},
{
2, 4,
},
{
4, 8,
},
},
{
{
1, 1,
},
{
1, 1,
},
{
1, 1,
},
{
1, 1,
},
{
1, 1,
},
},
{
{
2, 2,
},
{
2, 2,
},
{
2, 2,
},
{
2, 2,
},
{
2, 2,
},
},
};
unsigned int VertexLoader_TextCoord::GetSize(u64 _type, unsigned int _format,
unsigned int _elements)
{
return tableReadTexCoordVertexSize[_type][_format][_elements];
}
TPipelineFunction VertexLoader_TextCoord::GetFunction(u64 _type, unsigned int _format,
unsigned int _elements)
{
return tableReadTexCoord[_type][_format][_elements];
}
TPipelineFunction VertexLoader_TextCoord::GetDummyFunction()
{
return TexCoord_Read_Dummy;
}