static struct video_mode *vmode;
+static void swap_lfb(void *pixels);
+static void swap_banked(void *pixels);
+
int main(int argc, char **argv)
{
+ void *fb_buf;
struct video_mode *vmodes;
- int vmidx;
+ int vmidx, status = 0;
init_logger("game.log");
}
vmode = vmodes + vmidx;
+ if(vmode->fb_addr) {
+ swap_buffers = swap_lfb;
+ } else {
+ swap_buffers = swap_banked;
+ }
+
fb_width = vmode->xsz;
fb_height = vmode->ysz;
- fb_size = (vmode->xsz * vmode->bpp / 8) * vmode->ysz;
+ fb_size = vmode->pitch * vmode->ysz;
+
+ if(!(fb_buf = malloc(fb_size + vmode->pitch * 2))) {
+ fprintf(stderr, "failed to allocate framebuffer\n");
+ status = -1;
+ goto break_evloop;
+ }
+ fb_pixels = (char*)fb_buf + vmode->pitch;
reset_timer();
}
break_evloop:
+ free(fb_buf);
set_text_mode();
cleanup_video();
kb_shutdown();
- return 0;
+ return status;
}
static void draw(void)
{
int i, j;
- uint16_t *pptr = vmem;
+ uint16_t *pptr = fb_pixels;
for(i=0; i<fb_height; i++) {
for(j=0; j<fb_width; j++) {
*pptr++ = chess ? 0xff00 : 0x00ff;
}
}
+
+ swap_buffers(fb_pixels);
}
-void swap_buffers(void *pixels)
+static void swap_lfb(void *pixels)
{
wait_vsync();
memcpy(vmem, pixels, fb_size);
}
+
+static void swap_banked(void *pixels)
+{
+ int i, sz;
+ unsigned int pending;
+ unsigned char *pptr = pixels;
+ uint32_t offs = 0;
+
+ wait_vsync();
+
+ /* assume window is always at 0 at the beginning */
+ pending = fb_size;
+ while(pending > 0) {
+ sz = pending > vmode->bank_size ? vmode->bank_size : pending;
+ memcpy(vmem, pptr, sz);
+ pptr += sz;
+ pending -= sz;
+ vbe_setwin(0, ++offs);
+ }
+
+ vbe_setwin(0, 0);
+}