added cfgopt to the dos makefile

[dosdemo] / src / tunnel.c

diff --git a/src/tunnel.c b/src/tunnel.c
index 55eaefa..63f0f9f 100644 (file)
--- a/src/tunnel.c
+++ b/src/tunnel.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <math.h>
 #include <assert.h>
 #include "imago2.h"
@@ -26,8 +27,6 @@ static void draw_tunnel_range(unsigned short *pixels, int xoffs, int yoffs, int
 static int count_bits(unsigned int x);
 static int count_zeros(unsigned int x);
 
-static unsigned int *gen_test_image(int *wptr, int *hptr);
-
 static struct screen scr = {
        "tunnel",
        init,
@@ -181,8 +180,15 @@ static void draw(void)
 
        for(i=0; i<NUM_WORK_ITEMS; i++) {
                int starty = i * num_lines;
-               draw_tunnel_range((unsigned short*)fb_pixels, xoffs, yoffs, starty, draw_lines, time_msec);
+               int resty = starty + draw_lines;
+               int rest_lines = num_lines - draw_lines;
+               draw_tunnel_range(vmem_back, xoffs, yoffs, starty, draw_lines, time_msec);
+               if(rest_lines) {
+                       memset(vmem_back + resty * fb_width, 0, rest_lines * fb_width * 2);
+               }
        }
+
+       swap_buffers(0);
 }
 
 static void tunnel_color(int *rp, int *gp, int *bp, long toffs, unsigned int tpacked, int fog)
@@ -258,6 +264,7 @@ static int count_zeros(unsigned int x)
        return num;
 }
 
+/*
 static unsigned int *gen_test_image(int *wptr, int *hptr)
 {
        int i, j;
@@ -281,3 +288,4 @@ static unsigned int *gen_test_image(int *wptr, int *hptr)
        *hptr = ysz;
        return pixels;
 }
+*/