X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=dosdemo;a=blobdiff_plain;f=src%2Fdos%2Fmain.c;h=70ea449f9b8001017e07d4feb55bb24c4555ef1a;hp=3ac7616e8e0508fa75611083bd6a72ad2a251523;hb=102f82ec5a8128cb076371aa3d9821e684b94380;hpb=5029eb9f7a538dd58e1c66c0945784acac8cc58b

diff --git a/src/dos/main.c b/src/dos/main.c
index 3ac7616..70ea449 100644
--- a/src/dos/main.c
+++ b/src/dos/main.c
@@ -15,6 +15,7 @@
 #include "cfgopt.h"
 #include "logger.h"
 #include "tinyfps.h"
+#include "cdpmi.h"
 
 #undef NOKEYB
 
@@ -31,7 +32,11 @@ static quat_t rot = {0, 0, 0, 1};
 
 int main(int argc, char **argv)
 {
-	fbsize = fb_width * fb_height * fb_bpp / CHAR_BIT;
+#ifdef __DJGPP__
+	__djgpp_nearptr_enable();
+#endif
+
+	fbsize = fb_width * fb_height * fb_bpp / 8;
 
 	init_logger("demo.log");
 
@@ -46,20 +51,16 @@ int main(int argc, char **argv)
 		set_mouse(fb_width / 2, fb_height / 2);
 	}
 
-	if(!(fb_pixels = malloc(fbsize))) {
+	/* allocate a couple extra rows as a guard band, until we fucking fix the rasterizer */
+	if(!(fb_pixels = malloc(fbsize + (fb_width * fb_bpp / 8) * 2))) {
 		fprintf(stderr, "failed to allocate backbuffer\n");
 		return 1;
 	}
+	fb_pixels += fb_width;
 
-	if(!(vmem_back = set_video_mode(fb_width, fb_height, fb_bpp))) {
+	if(!(vmem = set_video_mode(fb_width, fb_height, fb_bpp, 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();
@@ -90,7 +91,6 @@ 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);
 			}
@@ -120,32 +120,16 @@ void demo_quit(void)
 
 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_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();
-			}
-		}
+	if(!pixels) {
+		pixels = fb_pixels;
+	}
+
+	/* just memcpy to the front buffer */
+	if(opt.vsync) {
+		wait_vsync();
 	}
+	drawFps(pixels);
+	memcpy(vmem, pixels, fbsize);
 }