RaySollium99/picodrive
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bugfixes, new scaling, double ym upd at 940

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@83 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-03-31 13:57:45 +00:00
parent 3d48f1437f
commit 2433f40912
22 changed files with 360 additions and 171 deletions
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27
platform/gp2x/gp2x.c
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@ -52,19 +52,21 @@ void *gp2x_screen;
#define FRAMEBUFF_ADDR2 (FRAMEBUFF_ADDR1+0x30000)
#define FRAMEBUFF_ADDR3 (FRAMEBUFF_ADDR2+0x30000)
static const int gp2x_screenaddrs[] = { FRAMEBUFF_ADDR0, FRAMEBUFF_ADDR1, FRAMEBUFF_ADDR2, FRAMEBUFF_ADDR3 };
static const int gp2x_screenaddrs[4] = { FRAMEBUFF_ADDR0, FRAMEBUFF_ADDR1, FRAMEBUFF_ADDR2, FRAMEBUFF_ADDR3 };
static int gp2x_screenaddrs_use[4];
static unsigned short gp2x_screenaddr_old[4];
/* video stuff */
void gp2x_video_flip(void)
{
unsigned short msw = (unsigned short)(gp2x_screenaddrs[screensel&3] >> 16);
unsigned short lsw = (unsigned short) gp2x_screenaddrs_use[screensel&3];
unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&3] >> 16);
gp2x_memregs[0x2910>>1] = msw;
gp2x_memregs[0x2914>>1] = msw;
gp2x_memregs[0x290E>>1] = 0;
gp2x_memregs[0x2912>>1] = 0;
gp2x_memregs[0x290E>>1] = lsw;
gp2x_memregs[0x2912>>1] = lsw;
// jump to other buffer:
gp2x_screen = gp2x_screens[++screensel&3];
@ -73,7 +75,7 @@ void gp2x_video_flip(void)
/* doulblebuffered flip */
void gp2x_video_flip2(void)
{
unsigned short msw = (unsigned short)(gp2x_screenaddrs[screensel&1] >> 16);
unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&1] >> 16);
gp2x_memregs[0x2910>>1] = msw;
gp2x_memregs[0x2914>>1] = msw;
@ -113,10 +115,17 @@ void gp2x_video_setpalette(int *pal, int len)
// TV Compatible function //
void gp2x_video_RGB_setscaling(int W, int H)
void gp2x_video_RGB_setscaling(int ln_offs, int W, int H)
{
float escalaw, escalah;
int bpp = (gp2x_memregs[0x28DA>>1]>>9)&0x3;
unsigned short scalw;
// set offset
gp2x_screenaddrs_use[0] = gp2x_screenaddrs[0] + ln_offs * 320 * bpp;
gp2x_screenaddrs_use[1] = gp2x_screenaddrs[1] + ln_offs * 320 * bpp;
gp2x_screenaddrs_use[2] = gp2x_screenaddrs[2] + ln_offs * 320 * bpp;
gp2x_screenaddrs_use[3] = gp2x_screenaddrs[3] + ln_offs * 320 * bpp;
escalaw = 1024.0; // RGB Horiz LCD
escalah = 320.0; // RGB Vert LCD
@ -131,7 +140,10 @@ void gp2x_video_RGB_setscaling(int W, int H)
}
// scale horizontal
gp2x_memregs[0x2906>>1]=(unsigned short)((float)escalaw *(W/320.0));
scalw = (unsigned short)((float)escalaw *(W/320.0));
/* if there is no horizontal scaling, vertical doesn't work. Here is a nasty wrokaround... */
if (H != 240 && W == 320) scalw--;
gp2x_memregs[0x2906>>1]=scalw;
// scale vertical
gp2x_memregl[0x2908>>2]=(unsigned long)((float)escalah *bpp *(H/240.0));
}
@ -304,6 +316,7 @@ void gp2x_init(void)
gp2x_screenaddr_old[2] = gp2x_memregs[0x2912>>1];
gp2x_screenaddr_old[3] = gp2x_memregs[0x2914>>1];
memcpy(gp2x_screenaddrs_use, gp2x_screenaddrs, sizeof(gp2x_screenaddrs));
gp2x_memset_all_buffers(0, 0, 320*240*2);
// snd