X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=dosdemo;a=blobdiff_plain;f=src%2Fdos%2Fmain.c;h=442f343ed2ab7ad5ea4eec71a8e0a2cc397c8f24;hp=ac2ccd2ae9bef017b7fd274ae8683308ae0a971a;hb=757e7697c9a4434df6f3fdf3234de504bb4636bc;hpb=ecc362e702b77d5c1334656e6f4dc9b17abcb767

diff --git a/src/dos/main.c b/src/dos/main.c
index ac2ccd2..442f343 100644
--- a/src/dos/main.c
+++ b/src/dos/main.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <limits.h>
 #include "demo.h"
 #include "keyb.h"
 #include "timer.h"
@@ -8,10 +9,18 @@ static int quit;
 
 int main(int argc, char **argv)
 {
+	void *vmem;
+	long fbsize = fb_width * fb_height * fb_bpp / CHAR_BIT;
+
 	init_timer(100);
 	kb_init(32);
 
-	if(!(fb_pixels = set_video_mode(fb_width, fb_height, fb_bpp))) {
+	if(!(fb_pixels = malloc(fbsize))) {
+		fprintf(stderr, "failed to allocate backbuffer\n");
+		return 1;
+	}
+
+	if(!(vmem = set_video_mode(fb_width, fb_height, fb_bpp))) {
 		return 1;
 	}
 
@@ -28,9 +37,13 @@ int main(int argc, char **argv)
 		}
 		if(quit) goto break_evloop;
 
-		/*wait_vsync();*/
+		mouse_bmask = read_mouse(&mouse_x, &mouse_y);
+
 		time_msec = get_msec();
 		demo_draw();
+
+		/*wait_vsync();*/
+		memcpy(vmem, fb_pixels, fbsize);
 	}
 
 break_evloop: