204 lines
5.8 KiB
C++
204 lines
5.8 KiB
C++
// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#include <limits>
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#include "Common.h"
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#include "VideoCommon.h"
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#include "VertexLoader.h"
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#include "VertexLoader_Position.h"
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#include "VertexManagerBase.h"
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#include "CPUDetect.h"
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extern float posScale;
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extern TVtxAttr *pVtxAttr;
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// Thoughts on the implementation of a vertex loader compiler.
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// s_pCurBufferPointer 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)
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{
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return val * posScale;
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}
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template <>
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float PosScale(float val)
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{ return val; }
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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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for (int i = 0; i < 3; ++i)
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DataWrite(i<N ? PosScale(DataRead<T>()) : 0.f);
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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::numeric_limits<I>::is_signed, "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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if (index < std::numeric_limits<I>::max())
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{
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auto const data = reinterpret_cast<const T*>(cached_arraybases[ARRAY_POSITION] + (index * arraystrides[ARRAY_POSITION]));
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for (int i = 0; i < 3; ++i)
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DataWrite(i<N ? PosScale(Common::FromBigEndian(data[i])) : 0.f);
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LOG_VTX();
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}
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}
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#if _M_SSE >= 0x301
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static const __m128i kMaskSwap32_3 = _mm_set_epi32(0xFFFFFFFFL, 0x08090A0BL, 0x04050607L, 0x00010203L);
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static const __m128i kMaskSwap32_2 = _mm_set_epi32(0xFFFFFFFFL, 0xFFFFFFFFL, 0x04050607L, 0x00010203L);
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template <typename I, bool three>
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void LOADERDECL Pos_ReadIndex_Float_SSSE3()
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{
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auto const index = DataRead<I>();
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if (index < std::numeric_limits<I>::max())
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{
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const u32* pData = (const u32 *)(cached_arraybases[ARRAY_POSITION] + (index * arraystrides[ARRAY_POSITION]));
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GC_ALIGNED128(const __m128i a = _mm_loadu_si128((__m128i*)pData));
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GC_ALIGNED128(__m128i b = _mm_shuffle_epi8(a, three ? kMaskSwap32_3 : kMaskSwap32_2));
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_mm_storeu_si128((__m128i*)VertexManager::s_pCurBufferPointer, b);
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VertexManager::s_pCurBufferPointer += sizeof(float) * 3;
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LOG_VTX();
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}
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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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{NULL, NULL,},
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{NULL, NULL,},
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{NULL, NULL,},
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{NULL, NULL,},
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{NULL, NULL,},
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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(void) {
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#if _M_SSE >= 0x301
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if (cpu_info.bSSSE3) {
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tableReadPosition[2][4][0] = Pos_ReadIndex_Float_SSSE3<u8, false>;
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tableReadPosition[2][4][1] = Pos_ReadIndex_Float_SSSE3<u8, true>;
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tableReadPosition[3][4][0] = Pos_ReadIndex_Float_SSSE3<u16, false>;
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tableReadPosition[3][4][1] = Pos_ReadIndex_Float_SSSE3<u16, true>;
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}
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#endif
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}
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unsigned int VertexLoader_Position::GetSize(unsigned int _type, unsigned int _format, unsigned int _elements) {
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return tableReadPositionVertexSize[_type][_format][_elements];
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}
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TPipelineFunction VertexLoader_Position::GetFunction(unsigned int _type, unsigned int _format, unsigned int _elements) {
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return tableReadPosition[_type][_format][_elements];
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}
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