foo

[dosdemo] / src / dos / main.c

diff --git a/src/dos/main.c b/src/dos/main.c
index 0f8abf5..6d83027 100644 (file)
--- a/src/dos/main.c
+++ b/src/dos/main.c
@@ -51,15 +51,9 @@ int main(int argc, char **argv)
                return 1;
        }
 
                return 1;
        }
 

-       if(!(vmem_back = set_video_mode(fb_width, fb_height, fb_bpp))) {
+       if(!(vmem = set_video_mode(fb_width, fb_height, fb_bpp))) {

                return 1;
        }
                return 1;
        }

-       if(!(vmem_front = page_flip(FLIP_NOW))) {
-               fprintf(stderr, "page flipping not supported. falling back to double buffering\n");
-               vmem_front = vmem_back;
-       } else {
-               assert(vmem_back != vmem_front);
-       }

 
        if(demo_init(argc, argv) == -1) {
                set_text_mode();
 
        if(demo_init(argc, argv) == -1) {
                set_text_mode();

@@ -119,32 +113,16 @@ void demo_quit(void)
 
 void swap_buffers(void *pixels)
 {
 
 void swap_buffers(void *pixels)
 {

-       if(pixels) {
-               /* just memcpy to the front buffer */
-               if(opt.vsync) {
-                       wait_vsync();
-               }
-               drawFps(pixels);
-               memcpy(vmem_front, pixels, fbsize);
-
-       } else {
-               /* attempt page flipping */
-               void *next;
-
-               drawFps(vmem_back);
-               if((next = page_flip(opt.vsync ? FLIP_VBLANK : FLIP_NOW))) {
-                       assert(next == vmem_back);
-                       vmem_back = vmem_front;
-                       vmem_front = next;
-               } else {
-                       /* failed to page flip, assume we drew in the front buffer then
-                        * and just wait for vsync if necessary
-                        */
-                       if(opt.vsync) {
-                               wait_vsync();
-                       }
-               }
+       if(!pixels) {
+               pixels = fb_pixels;
+       }
+
+       /* just memcpy to the front buffer */
+       if(opt.vsync) {
+               wait_vsync();

        }
        }

+       drawFps(pixels);
+       memcpy(vmem, pixels, fbsize);

 }
 
 
 }