X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=dosdemo;a=blobdiff_plain;f=src%2Fdos%2Fmain.c;h=aed4e8aa90fa9af01b51bc038fd1abbe1faed5a2;hp=7564be3805e929f84bc51e53dc11f8d8cd8d8892;hb=9ecf7c26db456b3cef34a7d6d79ffb164cad17c5;hpb=6c5e65928b425dd6a7f5192841e1d4ef9d90789a

diff --git a/src/dos/main.c b/src/dos/main.c
index 7564be3..aed4e8a 100644
--- a/src/dos/main.c
+++ b/src/dos/main.c
@@ -3,6 +3,8 @@
 #include <math.h>
 #include <string.h>
 #include <limits.h>
+#include <assert.h>
+#include <conio.h>
 #include "demo.h"
 #include "keyb.h"
 #include "mouse.h"
@@ -12,6 +14,9 @@
 #include "sball.h"
 #include "cfgopt.h"
 #include "logger.h"
+#include "tinyfps.h"
+
+#undef NOKEYB
 
 static int handle_sball_event(sball_event *ev);
 static void recalc_sball_matrix(float *xform);
@@ -31,9 +36,12 @@ int main(int argc, char **argv)
 	init_logger("demo.log");
 
 	init_timer(100);
+#ifndef NOKEYB
 	kb_init(32);
+#endif
 
 	if((use_mouse = have_mouse())) {
+		printf("initializing mouse input\n");
 		set_mouse_limits(0, 0, fb_width, fb_height);
 		set_mouse(fb_width / 2, fb_height / 2);
 	}
@@ -43,11 +51,15 @@ int main(int argc, char **argv)
 		return 1;
 	}
 
-	if(!(vmem_front = set_video_mode(fb_width, fb_height, fb_bpp))) {
+	if(!(vmem_back = set_video_mode(fb_width, fb_height, fb_bpp))) {
 		return 1;
 	}
-	/* TODO implement multiple video memory pages for flipping */
-	vmem_back = vmem_front;
+	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();
@@ -61,10 +73,16 @@ int main(int argc, char **argv)
 	reset_timer();
 
 	while(!quit) {
+#ifndef NOKEYB
 		int key;
 		while((key = kb_getkey()) != -1) {
 			demo_keyboard(key, 1);
 		}
+#else
+		if(kbhit()) {
+			demo_keyboard(getch(), 1);
+		}
+#endif
 		if(quit) goto break_evloop;
 
 		if(use_mouse) {
@@ -72,7 +90,6 @@ int main(int argc, char **argv)
 		}
 		if(use_sball && sball_pending()) {
 			sball_event ev;
-			printf("got sball event\n");
 			while(sball_getevent(&ev)) {
 				handle_sball_event(&ev);
 			}
@@ -86,7 +103,9 @@ int main(int argc, char **argv)
 break_evloop:
 	set_text_mode();
 	demo_cleanup();
+#ifndef NOKEYB
 	kb_shutdown();
+#endif
 	if(use_sball) {
 		sball_shutdown();
 	}
@@ -100,13 +119,31 @@ void demo_quit(void)
 
 void swap_buffers(void *pixels)
 {
-	/* TODO implement page flipping */
 	if(pixels) {
-		/*wait_vsync();*/
+		/* 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_WAIT : 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();
+			}
+		}
 	}
 }