mirror of
https://github.com/PCSX2/pcsx2.git
synced 2026-09-09 22:32:57 +02:00
Gregory Hainaut
cf71049bd4
Help the compiler to generate better code
C code:
uint32 addr = (i >> 3u) % MAX_BLOCKS;
uint32 row = addr >> 5u;
uint32 col = 1 << (addr & 31u);
ASM Before
f48: mov eax,esi
f4a: mov ecx,esi
f4c: mov edx,DWORD PTR [ebp+0x8]
f4f: sar eax,0x1f
f52: sar ecx,0x3
f55: shr eax,0x12
f58: add ecx,eax
f5a: and ecx,0x3fff
f60: sub ecx,eax
f62: mov eax,0x1
f67: shl eax,cl
f69: shr ecx,0x5
f6c: lea edx,[edx+ecx*4]
ASM After
f48: mov ecx,edi
f4a: mov eax,0x1
f4f: sar ecx,0x3
f52: shl eax,cl
f54: shr ecx,0x3
f57: and ecx,0x7fc
f5d: add ecx,DWORD PTR [ebp+0x8]
73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
/*
|
|
* Copyright (C) 2007-2009 Gabest
|
|
* http://www.gabest.org
|
|
*
|
|
* This Program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This Program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with GNU Make; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA USA.
|
|
* http://www.gnu.org/copyleft/gpl.html
|
|
*
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "GSRenderer.h"
|
|
|
|
class GSTextureCacheSW
|
|
{
|
|
public:
|
|
class Texture
|
|
{
|
|
public:
|
|
GSState* m_state;
|
|
GSOffset* m_offset;
|
|
GIFRegTEX0 m_TEX0;
|
|
GIFRegTEXA m_TEXA;
|
|
void* m_buff;
|
|
uint32 m_tw;
|
|
uint32 m_age;
|
|
bool m_complete;
|
|
bool m_repeating;
|
|
vector<GSVector2i>* m_p2t;
|
|
uint32 m_valid[MAX_PAGES];
|
|
struct {uint32 bm[16]; const uint32* n;} m_pages;
|
|
const uint32* RESTRICT m_sharedbits;
|
|
|
|
// m_valid
|
|
// fast mode: each uint32 bits map to the 32 blocks of that page
|
|
// repeating mode: 1 bpp image of the texture tiles (8x8), also having 512 elements is just a coincidence (worst case: (1024*1024)/(8*8)/(sizeof(uint32)*8))
|
|
|
|
Texture(GSState* state, uint32 tw0, const GIFRegTEX0& TEX0, const GIFRegTEXA& TEXA);
|
|
virtual ~Texture();
|
|
|
|
bool Update(const GSVector4i& r);
|
|
bool Save(const string& fn, bool dds = false) const;
|
|
};
|
|
|
|
protected:
|
|
GSState* m_state;
|
|
hash_set<Texture*> m_textures;
|
|
std::array<std::list<Texture*>, MAX_PAGES> m_map;
|
|
|
|
public:
|
|
GSTextureCacheSW(GSState* state);
|
|
virtual ~GSTextureCacheSW();
|
|
|
|
Texture* Lookup(const GIFRegTEX0& TEX0, const GIFRegTEXA& TEXA, uint32 tw0 = 0);
|
|
|
|
void InvalidatePages(const uint32* pages, uint32 psm);
|
|
|
|
void RemoveAll();
|
|
void IncAge();
|
|
};
|