kounch
Still Fresh
Hi
as a consecuence of the research i have done for my entry to the GP2X 2006 competition, i think i have all the clues to correctly enable GP2X software to work with TV-Out support.
I have updated the Wiki with the info, here: http://wiki.gp2x.org/wiki/TV-out_support
I have also studied the changes you have to make to Rlyeh's minilib. In fact, it is enough to change only two functions!:
I have applied this changes to the code of minilib in GP2XSpectrum, GP2XEngine and Selector source code, and found that they work perfectly with TV-Out now.
EDIT:This code only works with minimal lib 0.B and if you don't change the default value of MLC_STL_HW (C000 290C) register, set by gp2x_init()
as a consecuence of the research i have done for my entry to the GP2X 2006 competition, i think i have all the clues to correctly enable GP2X software to work with TV-Out support.
I have updated the Wiki with the info, here: http://wiki.gp2x.org/wiki/TV-out_support
I have also studied the changes you have to make to Rlyeh's minilib. In fact, it is enough to change only two functions!:
Code:
void gp2x_video_RGB_setscaling(int W, int H)
{
float escalaw,escalah;
int bpp=(gp2x_memregs[0x28DA>>1]>>9)&0x3;
if(gp2x_memregs[0x2800>>1]&0x100) //TV-Out
{
escalaw=489.0; //RGB Horiz TV (PAL, NTSC)
if (gp2x_memregs[0x2818>>1] == 287) //PAL
escalah=274.0; //RGB Vert TV PAL
else if (gp2x_memregs[0x2818>>1] == 239) //NTSC
escalah=331.0; //RGB Vert TV NTSC
}
else //LCD
{
escalaw=1024.0; //RGB Horiz LCD
escalah=320.0; //RGB Vert LCD
}
// scale horizontal
gp2x_memregs[0x2906>>1]=(unsigned short)((float)escalaw *(W/320.0));
// scale vertical
gp2x_memregl[0x2908>>2]=(unsigned long)((float)escalah *bpp *(H/240.0));
}
Code:
void gp2x_video_RGB_setwindows(int window0, int window1, int window2, int window3, int x, int y)
{
int window,mode,mode2,x1,y1,x2,y2;
int xmax,ymax;
if(gp2x_memregs[0x2800>>1]&0x100) //TV-Out
{
xmax=669;
if (gp2x_memregs[0x2818>>1] == 287) //PAL
ymax=279; //TV-Out PAL
else if (gp2x_memregs[0x2818>>1] == 239) //NTSC
ymax=231; //TV-Out NTSC
}
else //LCD
{
xmax=319;
ymax=239;
}
x=(x * xmax) / 319;
y=(y * ymax) / 239;
//enable all RGB windows
gp2x_memregs[0x2880>>1]|=(1<<6)|(1<<5)|(1<<4)|(1<<3)|(1<<2);
for(window=0;window<4;window++) //windows 0..3
{
if(window==0) x1=0, y1=0, x2=x, y2=y, mode=window0;
if(window==1) x1=x, y1=0, x2=xmax, y2=y, mode=window1;
if(window==2) x1=0, y1=y, x2=x, y2=ymax, mode=window2;
if(window==3) x1=x, y1=y, x2=xmax, y2=ymax, mode=window3;
if(mode<0) { gp2x_memregs[0x28da>>1]&=~(1<<(window<<1)); }
else {
mode2=(mode>0x0F?0xF:mode);
//set alpha 0..0xE / colorkey,solid 0xF value
if(window<3)
{
gp2x_memregs[0x28de>>1]&=~(mode2<<(window<<2));
gp2x_memregs[0x28de>>1]|= (mode2<<(window<<2));
}
else
{
gp2x_memregs[0x28e0>>1]&=~(mode2<<((window-3)<<2));
gp2x_memregs[0x28e0>>1]|= (mode2<<((window-3)<<2));
}
//set window as blended (2), transparent/colorkey (1), solid (0)
gp2x_memregs[0x28dc>>1]&=~(3 <<(window<<1));
gp2x_memregs[0x28dc>>1]|= ((mode==0x11 ? 0 : (mode==0x10 ? 1 : 2))<<(window<<1));
//window coordinates
gp2x_memregs[(0x28e2+window*8)>>1]=x1;
gp2x_memregs[(0x28e4+window*8)>>1]=x2;
gp2x_memregs[(0x28e6+window*8)>>1]=y1;
gp2x_memregs[(0x28e8+window*8)>>1]=y2;
//enable window
gp2x_memregs[0x28da>>1]|=(3<<(window<<1));
}
}EDIT:This code only works with minimal lib 0.B and if you don't change the default value of MLC_STL_HW (C000 290C) register, set by gp2x_init()
