forked from dolphin-emu/dolphin
225 lines
7.2 KiB
C++
225 lines
7.2 KiB
C++
// Copyright 2013 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/CommonTypes.h"
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#include "Common/CPUDetect.h"
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#include "VideoCommon/VertexLoader.h"
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#include "VideoCommon/VertexLoader_Position.h"
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#include "VideoCommon/VertexManagerBase.h"
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#include "VideoCommon/VideoCommon.h"
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// Thoughts on the implementation of a vertex loader compiler.
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// g_vertex_manager_write_ptr should definitely be in a register.
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// Could load the position scale factor in XMM7, for example.
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// The pointer inside DataReadU8 in another.
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// Let's check out Pos_ReadDirect_UByte(). For Byte, replace MOVZX with MOVSX.
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/*
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MOVZX(32, R(EAX), MOffset(ESI, 0));
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MOVZX(32, R(EBX), MOffset(ESI, 1));
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MOVZX(32, R(ECX), MOffset(ESI, 2));
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MOVD(XMM0, R(EAX));
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MOVD(XMM1, R(EBX));
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MOVD(XMM2, R(ECX));
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CVTDQ2PS(XMM0, XMM0);
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CVTDQ2PS(XMM1, XMM1);
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CVTDQ2PS(XMM2, XMM2);
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MULSS(XMM0, XMM7);
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MULSS(XMM1, XMM7);
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MULSS(XMM2, XMM7);
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MOVSS(MOffset(EDI, 0), XMM0);
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MOVSS(MOffset(EDI, 4), XMM1);
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MOVSS(MOffset(EDI, 8), XMM2);
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Alternatively, lookup table:
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MOVZX(32, R(EAX), MOffset(ESI, 0));
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MOVZX(32, R(EBX), MOffset(ESI, 1));
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MOVZX(32, R(ECX), MOffset(ESI, 2));
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MOV(32, R(EAX), MComplex(LUTREG, EAX, 4));
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MOV(32, R(EBX), MComplex(LUTREG, EBX, 4));
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MOV(32, R(ECX), MComplex(LUTREG, ECX, 4));
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MOV(MOffset(EDI, 0), XMM0);
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MOV(MOffset(EDI, 4), XMM1);
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MOV(MOffset(EDI, 8), XMM2);
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SSE4:
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PINSRB(XMM0, MOffset(ESI, 0), 0);
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PINSRB(XMM0, MOffset(ESI, 1), 4);
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PINSRB(XMM0, MOffset(ESI, 2), 8);
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CVTDQ2PS(XMM0, XMM0);
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<two unpacks here to sign extend>
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MULPS(XMM0, XMM7);
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MOVUPS(MOffset(EDI, 0), XMM0);
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*/
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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 LOADERDECL Pos_ReadDirect()
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{
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static_assert(N <= 3, "N > 3 is not sane!");
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auto const scale = posScale[0];
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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 < 3; ++i)
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dst.Write(i<N ? PosScale(src.Read<T>(), scale) : 0.f);
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dst.WritePointer(&g_vertex_manager_write_ptr);
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src.WritePointer(&g_video_buffer_read_ptr);
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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 LOADERDECL Pos_ReadIndex()
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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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auto const data = reinterpret_cast<const T*>(cached_arraybases[ARRAY_POSITION] + (index * g_main_cp_state.array_strides[ARRAY_POSITION]));
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auto const scale = posScale[0];
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DataReader dst(g_vertex_manager_write_ptr, nullptr);
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for (int i = 0; i < 3; ++i)
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dst.Write(i<N ? PosScale(Common::FromBigEndian(data[i]), scale) : 0.f);
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dst.WritePointer(&g_vertex_manager_write_ptr);
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LOG_VTX();
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}
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#if _M_SSE >= 0x301
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template <typename T, bool three>
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void LOADERDECL Pos_ReadDirect_SSSE3()
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{
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const T* pData = reinterpret_cast<const T*>(DataGetPosition());
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Vertex_Read_SSSE3<T, three, true>(pData, *(__m128*)posScale);
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DataSkip<(2 + three) * sizeof(T)>();
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LOG_VTX();
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}
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template <typename I, typename T, bool three>
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void LOADERDECL Pos_ReadIndex_SSSE3()
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{
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static_assert(std::is_unsigned<I>::value, "Only unsigned I is sane!");
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auto const index = DataRead<I>();
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const T* pData = (const T*)(cached_arraybases[ARRAY_POSITION] + (index * g_main_cp_state.array_strides[ARRAY_POSITION]));
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Vertex_Read_SSSE3<T, three, true>(pData, *(__m128*)posScale);
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LOG_VTX();
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}
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#endif
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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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void VertexLoader_Position::Init()
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{
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#if _M_SSE >= 0x301
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if (cpu_info.bSSSE3)
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{
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tableReadPosition[1][0][0] = Pos_ReadDirect_SSSE3<u8, false>;
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tableReadPosition[1][0][1] = Pos_ReadDirect_SSSE3<u8, true>;
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tableReadPosition[1][1][0] = Pos_ReadDirect_SSSE3<s8, false>;
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tableReadPosition[1][1][1] = Pos_ReadDirect_SSSE3<s8, true>;
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tableReadPosition[1][2][0] = Pos_ReadDirect_SSSE3<u16, false>;
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tableReadPosition[1][2][1] = Pos_ReadDirect_SSSE3<u16, true>;
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tableReadPosition[1][3][0] = Pos_ReadDirect_SSSE3<s16, false>;
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tableReadPosition[1][3][1] = Pos_ReadDirect_SSSE3<s16, true>;
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tableReadPosition[1][4][0] = Pos_ReadDirect_SSSE3<float, false>;
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tableReadPosition[1][4][1] = Pos_ReadDirect_SSSE3<float, true>;
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tableReadPosition[2][0][0] = Pos_ReadIndex_SSSE3<u8, u8, false>;
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tableReadPosition[2][0][1] = Pos_ReadIndex_SSSE3<u8, u8, true>;
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tableReadPosition[3][0][0] = Pos_ReadIndex_SSSE3<u16, u8, false>;
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tableReadPosition[3][0][1] = Pos_ReadIndex_SSSE3<u16, u8, true>;
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tableReadPosition[2][1][0] = Pos_ReadIndex_SSSE3<u8, s8, false>;
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tableReadPosition[2][1][1] = Pos_ReadIndex_SSSE3<u8, s8, true>;
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tableReadPosition[3][1][0] = Pos_ReadIndex_SSSE3<u16, s8, false>;
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tableReadPosition[3][1][1] = Pos_ReadIndex_SSSE3<u16, s8, true>;
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tableReadPosition[2][2][0] = Pos_ReadIndex_SSSE3<u8, u16, false>;
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tableReadPosition[2][2][1] = Pos_ReadIndex_SSSE3<u8, u16, true>;
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tableReadPosition[3][2][0] = Pos_ReadIndex_SSSE3<u16, u16, false>;
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tableReadPosition[3][2][1] = Pos_ReadIndex_SSSE3<u16, u16, true>;
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tableReadPosition[2][3][0] = Pos_ReadIndex_SSSE3<u8, s16, false>;
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tableReadPosition[2][3][1] = Pos_ReadIndex_SSSE3<u8, s16, true>;
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tableReadPosition[3][3][0] = Pos_ReadIndex_SSSE3<u16, s16, false>;
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tableReadPosition[3][3][1] = Pos_ReadIndex_SSSE3<u16, s16, true>;
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tableReadPosition[2][4][0] = Pos_ReadIndex_SSSE3<u8, float, false>;
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tableReadPosition[2][4][1] = Pos_ReadIndex_SSSE3<u8, float, true>;
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tableReadPosition[3][4][0] = Pos_ReadIndex_SSSE3<u16, float, false>;
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tableReadPosition[3][4][1] = Pos_ReadIndex_SSSE3<u16, float, true>;
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}
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#endif
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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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