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working tripple buffering

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This commit is contained in:
notaz
2009-05-31 23:10:24 +03:00
parent 4742480dca
commit 4cdfc0bc7b
6 changed files with 187 additions and 22 deletions
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97
gp2x/gp2x.c
View File

@@ -38,8 +38,6 @@ static volatile u16 *gpsp_gp2x_memregs;
static volatile u32 *gpsp_gp2x_memregl;
unsigned short *gp2x_memregs;
static volatile u16 *MEM_REG;
s32 gp2x_load_mmuhack()
{
s32 mmufd = open("/dev/mmuhack", O_RDWR);
@@ -57,6 +55,89 @@ s32 gp2x_load_mmuhack()
return 0;
}
#ifdef WIZ_BUILD
#include <linux/fb.h>
void *gpsp_gp2x_screen;
static u32 fb_paddr[3];
static void *fb_vaddr[3];
static u32 fb_work_buf;
const int fb_buf_count = 3;
static int fb_buf_use = 3;
static void fb_video_init()
{
struct fb_fix_screeninfo fbfix;
int i, ret;
int fbdev;
fbdev = open("/dev/fb0", O_RDWR);
if (fbdev < 0) {
perror("can't open fbdev");
exit(1);
}
ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix);
if (ret == -1)
{
perror("ioctl(fbdev) failed");
exit(1);
}
printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start);
fb_paddr[0] = fbfix.smem_start;
close(fbdev);
fb_vaddr[0] = mmap(0, 320*240*2*fb_buf_count, PROT_READ|PROT_WRITE,
MAP_SHARED, gpsp_gp2x_dev, fb_paddr[0]);
if (fb_vaddr[0] == MAP_FAILED)
{
perror("mmap(fb_vaddr) failed");
exit(1);
}
memset(fb_vaddr[0], 0, 320*240*2*fb_buf_count);
printf(" %p -> %08x\n", fb_vaddr[0], fb_paddr[0]);
for (i = 1; i < fb_buf_count; i++)
{
fb_paddr[i] = fb_paddr[i-1] + 320*240*2;
fb_vaddr[i] = (char *)fb_vaddr[i-1] + 320*240*2;
printf(" %p -> %08x\n", fb_vaddr[i], fb_paddr[i]);
}
fb_work_buf = 0;
fb_buf_use = fb_buf_count;
pollux_video_flip();
warm_change_cb_upper(WCB_C_BIT|WCB_B_BIT, 1);
}
void pollux_video_flip()
{
warm_cache_op_all(WOP_D_CLEAN);
gpsp_gp2x_memregl[0x406C>>2] = fb_paddr[fb_work_buf];
gpsp_gp2x_memregl[0x4058>>2] |= 0x10;
fb_work_buf++;
if (fb_work_buf >= fb_buf_use)
fb_work_buf = 0;
gpsp_gp2x_screen = fb_vaddr[fb_work_buf];
}
void fb_use_buffers(int count)
{
if (count < 1)
count = 1;
else if (count > fb_buf_count)
count = fb_buf_count;
fb_buf_use = count;
}
static void fb_video_exit()
{
/* switch to default fb mem */
gpsp_gp2x_memregl[0x406C>>2] = fb_paddr[0];
gpsp_gp2x_memregl[0x4058>>2] |= 0x10;
}
#endif
void gp2x_init()
{
gpsp_gp2x_dev = open("/dev/mem", O_RDWR);
@@ -67,10 +148,11 @@ void gp2x_init()
gpsp_gp2x_memregs = (unsigned short *)gpsp_gp2x_memregl;
#ifdef WIZ_BUILD
gpsp_gp2x_gpiodev = open("/dev/GPIO", O_RDONLY);
#endif
warm_init();
fb_video_init();
#endif
clear_screen(0);
// clear_screen(0);
// main_cpuspeed(0, NULL);
gp2x_memregs = (void *)gpsp_gp2x_memregs;
cpuctrl_init();
@@ -79,12 +161,13 @@ void gp2x_init()
void gp2x_quit()
{
#ifdef WIZ_BUILD
close(gpsp_gp2x_gpiodev);
fb_video_exit();
#endif
munmap((void *)gpsp_gp2x_memregl, 0x10000);
close(gpsp_gp2x_dev_audio);
close(gpsp_gp2x_dev);
#ifdef WIZ_BUILD
close(gpsp_gp2x_gpiodev);
#endif
//chdir("/usr/gp2x");
//execl("gp2xmenu", "gp2xmenu", NULL);

5
gp2x/gp2x.h
View File

@@ -51,4 +51,9 @@ void set_940_Div(u16 div);
s32 gp2x_load_mmuhack();
/* wiz only */
extern void *gpsp_gp2x_screen;
void fb_use_buffers(int count);
void pollux_video_flip();
#endif