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// Copyright 2008 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "VideoCommon/VertexLoader_TextCoord.h"
#include <type_traits>
#include "Common/CommonTypes.h"
#include "Common/Swap.h"
#include "VideoCommon/VertexLoader.h"
#include "VideoCommon/VertexLoaderManager.h"
#include "VideoCommon/VertexLoaderUtils.h"
namespace
{
void TexCoord_Read_Dummy(VertexLoader* loader)
{
loader->m_tcIndex++;
}
template <typename T>
constexpr float TCScale(T val, float scale)
{
return val * scale;
}
template <>
constexpr float TCScale(float val, [[maybe_unused]] float scale)
{
return val;
}
template <typename T, int N>
void TexCoord_ReadDirect(VertexLoader* loader)
{
const auto scale = loader->m_tcScale[loader->m_tcIndex];
for (int i = 0; i != N; ++i)
DataWrite(TCScale(DataRead<T>(), scale));
++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!");
const auto index = DataRead<I>();
const auto data = reinterpret_cast<const T*>(
VertexLoaderManager::cached_arraybases[CPArray::TexCoord0 + loader->m_tcIndex] +
(index * g_main_cp_state.array_strides[CPArray::TexCoord0 + loader->m_tcIndex]));
const auto scale = loader->m_tcScale[loader->m_tcIndex];
for (int i = 0; i != N; ++i)
DataWrite(TCScale(Common::FromBigEndian(data[i]), scale));
++loader->m_tcIndex;
}
using ComponentCountRow = Common::EnumMap<TPipelineFunction, TexComponentCount::ST>;
using ComponentFormatTable = Common::EnumMap<ComponentCountRow, ComponentFormat::InvalidFloat7>;
using Table = Common::EnumMap<ComponentFormatTable, VertexComponentFormat::Index16>;
constexpr Table s_table_read_tex_coord = {
ComponentFormatTable({
ComponentCountRow(nullptr, nullptr),
ComponentCountRow(nullptr, nullptr),
ComponentCountRow(nullptr, nullptr),
ComponentCountRow(nullptr, nullptr),
ComponentCountRow(nullptr, nullptr),
ComponentCountRow(nullptr, nullptr),
ComponentCountRow(nullptr, nullptr),
ComponentCountRow(nullptr, nullptr),
}),
ComponentFormatTable({
ComponentCountRow(TexCoord_ReadDirect<u8, 1>, TexCoord_ReadDirect<u8, 2>),
ComponentCountRow(TexCoord_ReadDirect<s8, 1>, TexCoord_ReadDirect<s8, 2>),
ComponentCountRow(TexCoord_ReadDirect<u16, 1>, TexCoord_ReadDirect<u16, 2>),
ComponentCountRow(TexCoord_ReadDirect<s16, 1>, TexCoord_ReadDirect<s16, 2>),
ComponentCountRow(TexCoord_ReadDirect<float, 1>, TexCoord_ReadDirect<float, 2>),
ComponentCountRow(TexCoord_ReadDirect<float, 1>, TexCoord_ReadDirect<float, 2>),
ComponentCountRow(TexCoord_ReadDirect<float, 1>, TexCoord_ReadDirect<float, 2>),
ComponentCountRow(TexCoord_ReadDirect<float, 1>, TexCoord_ReadDirect<float, 2>),
}),
ComponentFormatTable({
ComponentCountRow(TexCoord_ReadIndex<u8, u8, 1>, TexCoord_ReadIndex<u8, u8, 2>),
ComponentCountRow(TexCoord_ReadIndex<u8, s8, 1>, TexCoord_ReadIndex<u8, s8, 2>),
ComponentCountRow(TexCoord_ReadIndex<u8, u16, 1>, TexCoord_ReadIndex<u8, u16, 2>),
ComponentCountRow(TexCoord_ReadIndex<u8, s16, 1>, TexCoord_ReadIndex<u8, s16, 2>),
ComponentCountRow(TexCoord_ReadIndex<u8, float, 1>, TexCoord_ReadIndex<u8, float, 2>),
ComponentCountRow(TexCoord_ReadIndex<u8, float, 1>, TexCoord_ReadIndex<u8, float, 2>),
ComponentCountRow(TexCoord_ReadIndex<u8, float, 1>, TexCoord_ReadIndex<u8, float, 2>),
ComponentCountRow(TexCoord_ReadIndex<u8, float, 1>, TexCoord_ReadIndex<u8, float, 2>),
}),
ComponentFormatTable({
ComponentCountRow(TexCoord_ReadIndex<u16, u8, 1>, TexCoord_ReadIndex<u16, u8, 2>),
ComponentCountRow(TexCoord_ReadIndex<u16, s8, 1>, TexCoord_ReadIndex<u16, s8, 2>),
ComponentCountRow(TexCoord_ReadIndex<u16, u16, 1>, TexCoord_ReadIndex<u16, u16, 2>),
ComponentCountRow(TexCoord_ReadIndex<u16, s16, 1>, TexCoord_ReadIndex<u16, s16, 2>),
ComponentCountRow(TexCoord_ReadIndex<u16, float, 1>, TexCoord_ReadIndex<u16, float, 2>),
ComponentCountRow(TexCoord_ReadIndex<u16, float, 1>, TexCoord_ReadIndex<u16, float, 2>),
ComponentCountRow(TexCoord_ReadIndex<u16, float, 1>, TexCoord_ReadIndex<u16, float, 2>),
ComponentCountRow(TexCoord_ReadIndex<u16, float, 1>, TexCoord_ReadIndex<u16, float, 2>),
}),
};
} // Anonymous namespace
TPipelineFunction VertexLoader_TextCoord::GetFunction(VertexComponentFormat type,
ComponentFormat format,
TexComponentCount elements)
{
return s_table_read_tex_coord[type][format][elements];
}
TPipelineFunction VertexLoader_TextCoord::GetDummyFunction()
{
return TexCoord_Read_Dummy;
}
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