pcsx2/plugins/zzogl-pg/opengl/GifTransfer.h

135 lines
2.7 KiB
C

/* ZZ Open GL graphics plugin
* Copyright (c)2009-2010 zeydlitz@gmail.com, arcum42@gmail.com
* Based on Zerofrog's ZeroGS KOSMOS (c)2005-2008
*
* 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 of the License, 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifndef GIFTRANSFER_H_INCLUDED
#define GIFTRANSFER_H_INCLUDED
#include "Util.h"
#include "GS.h"
#include "Regs.h"
enum GIF_FLG
{
GIF_FLG_PACKED = 0,
GIF_FLG_REGLIST = 1,
GIF_FLG_IMAGE = 2,
GIF_FLG_IMAGE2 = 3
};
//
// GIFTag
union GIFTag
{
u64 ai64[2];
u32 ai32[4];
struct
{
u32 NLOOP : 15;
u32 EOP : 1;
u32 _PAD1 : 16;
u32 _PAD2 : 14;
u32 PRE : 1;
u32 PRIM : 11;
u32 FLG : 2; // enum GIF_FLG
u32 NREG : 4;
u64 REGS : 64;
};
void set(const u32 *data)
{
for (int i = 0; i <= 3; i++)
{
ai32[i] = data[i];
}
}
GIFTag(u32 *data)
{
set(data);
}
GIFTag(){ ai64[0] = 0; ai64[1] = 0; }
};
// EE part. Data transfer packet description
typedef struct
{
u32 mode;
int reg;
u64 regs;
u32 nloop;
int eop;
int nreg;
u32 adonly;
GIFTag tag;
void setTag(const u32 *data)
{
tag.set(data);
nloop = tag.NLOOP;
eop = tag.EOP;
mode = tag.FLG;
adonly = false;
// Hmm....
nreg = tag.NREG << 2;
if (nreg == 0) nreg = 64;
regs = tag.REGS;
reg = 0;
if ((nreg == 4) && (regs == GIF_REG_A_D)) adonly = true;
// ZZLog::GS_Log("GIFtag: %8.8lx_%8.8lx_%8.8lx_%8.8lx: EOP=%d, NLOOP=%x, FLG=%x, NREG=%d, PRE=%d",
// data[3], data[2], data[1], data[0],
// path->eop, path->nloop, mode, path->nreg, tag.PRE);
}
u32 GetReg()
{
return (regs >> reg) & 0xf;
}
bool StepReg()
{
reg += 4;
if (reg == nreg)
{
reg = 0;
nloop--;
if (nloop == 0) return false;
}
return true;
}
} pathInfo;
extern void _GSgifPacket(pathInfo *path, const u32 *pMem);
extern void _GSgifRegList(pathInfo *path, const u32 *pMem);
extern void _GSgifTransfer(pathInfo *path, const u32 *pMem, u32 size);
extern GIFRegHandler g_GIFPackedRegHandlers[];
extern GIFRegHandler g_GIFRegHandlers[];
extern void InitPath();
#endif // GIFTRANSFER_H_INCLUDED