RaySollium99/libpicofe
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fonts, buffer aligment, save progress

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@51 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-02-17 22:43:26 +00:00
parent 3294e5d90b
commit 0805b5b478
9 changed files with 331 additions and 121 deletions
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53
gp2x/gp2x.c
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@ -46,10 +46,11 @@ static int sounddev = 0, mixerdev = 0;
void *gp2x_screen;
#define FRAMEBUFF_ADDR0 0x4000000-640*480
#define FRAMEBUFF_ADDR1 0x4000000-640*480*2
#define FRAMEBUFF_ADDR2 0x4000000-640*480*3
#define FRAMEBUFF_ADDR3 0x4000000-640*480*4
#define FRAMEBUFF_WHOLESIZE (0x30000*4) // 320*240*2 + some more
#define FRAMEBUFF_ADDR0 (0x4000000-FRAMEBUFF_WHOLESIZE)
#define FRAMEBUFF_ADDR1 (FRAMEBUFF_ADDR0+0x30000)
#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 unsigned short gp2x_screenaddr_old[4];
@ -58,14 +59,12 @@ static unsigned short gp2x_screenaddr_old[4];
/* video stuff */
void gp2x_video_flip(void)
{
unsigned int address = gp2x_screenaddrs[screensel&3];
unsigned short msb16 = (unsigned short)(address >> 16);
unsigned short lsb16 = (unsigned short)(address);
unsigned short msw = (unsigned short)(gp2x_screenaddrs[screensel&3] >> 16);
gp2x_memregs[0x290E>>1] = lsb16;
gp2x_memregs[0x2910>>1] = msb16;
gp2x_memregs[0x2912>>1] = lsb16;
gp2x_memregs[0x2914>>1] = msb16;
gp2x_memregs[0x2910>>1] = msw;
gp2x_memregs[0x2914>>1] = msw;
gp2x_memregs[0x290E>>1] = 0;
gp2x_memregs[0x2912>>1] = 0;
// jump to other buffer:
gp2x_screen = gp2x_screens[++screensel&3];
@ -74,14 +73,12 @@ void gp2x_video_flip(void)
/* doulblebuffered flip */
void gp2x_video_flip2(void)
{
unsigned int address = gp2x_screenaddrs[screensel&1];
unsigned short msb16 = (unsigned short)(address >> 16);
unsigned short lsb16 = (unsigned short)(address);
unsigned short msw = (unsigned short)(gp2x_screenaddrs[screensel&1] >> 16);
gp2x_memregs[0x290E>>1] = lsb16;
gp2x_memregs[0x2910>>1] = msb16;
gp2x_memregs[0x2912>>1] = lsb16;
gp2x_memregs[0x2914>>1] = msb16;
gp2x_memregs[0x2910>>1] = msw;
gp2x_memregs[0x2914>>1] = msw;
gp2x_memregs[0x290E>>1] = 0;
gp2x_memregs[0x2912>>1] = 0;
// jump to other buffer:
gp2x_screen = gp2x_screens[++screensel&1];
@ -99,7 +96,7 @@ void gp2x_video_changemode(int bpp)
{
gp2x_video_changemode2(bpp);
gp2x_memset_all_buffers(0, 0, 640*480);
gp2x_memset_all_buffers(0, 0, 320*240*2);
gp2x_video_flip();
}
@ -256,7 +253,7 @@ void Pause940(int yes)
void Reset940(int yes, int bank)
{
gp2x_memregs[0x3B48>>1] = ((yes&1) << 7) | (bank & 0x03); /* bank=3 */
gp2x_memregs[0x3B48>>1] = ((yes&1) << 7) | (bank & 0x03);
}
@ -282,16 +279,16 @@ void gp2x_init(void)
}
gp2x_memregl = (unsigned long *) gp2x_memregs;
gp2x_screens[3] = mmap(0, 640*480*4, PROT_WRITE, MAP_SHARED, memdev, FRAMEBUFF_ADDR3);
if(gp2x_screens[3] == MAP_FAILED)
gp2x_screens[0] = mmap(0, FRAMEBUFF_WHOLESIZE, PROT_WRITE, MAP_SHARED, memdev, FRAMEBUFF_ADDR0);
if(gp2x_screens[0] == MAP_FAILED)
{
printf("mmap(gp2x_screen) failed with %i\n", errno);
exit(1);
}
printf("framebuffers point to %p\n", gp2x_screens[3]);
gp2x_screens[2] = (char *) gp2x_screens[3]+640*480;
gp2x_screens[1] = (char *) gp2x_screens[2]+640*480;
gp2x_screens[0] = (char *) gp2x_screens[1]+640*480;
printf("framebuffers point to %p\n", gp2x_screens[0]);
gp2x_screens[1] = (char *) gp2x_screens[0]+0x30000;
gp2x_screens[2] = (char *) gp2x_screens[1]+0x30000;
gp2x_screens[3] = (char *) gp2x_screens[2]+0x30000;
gp2x_screen = gp2x_screens[0];
screensel = 0;
@ -301,6 +298,8 @@ void gp2x_init(void)
gp2x_screenaddr_old[2] = gp2x_memregs[0x2912>>1];
gp2x_screenaddr_old[3] = gp2x_memregs[0x2914>>1];
gp2x_memset_all_buffers(0, 0, 320*240*2);
// snd
mixerdev = open("/dev/mixer", O_RDWR);
if (mixerdev == -1)
@ -325,7 +324,7 @@ void gp2x_deinit(void)
gp2x_memregs[0x2912>>1] = gp2x_screenaddr_old[2];
gp2x_memregs[0x2914>>1] = gp2x_screenaddr_old[3];
munmap(gp2x_screens[0], 640*480*4);
munmap(gp2x_screens[0], FRAMEBUFF_WHOLESIZE);
munmap((void *)gp2x_memregs, 0x10000);
close(memdev);
close(mixerdev);