fixed blitfb32 for banked video modes with scanline padding (cirrus logic vlb)

[retroray] / src / dos / vidsys.c

diff --git a/src/dos/vidsys.c b/src/dos/vidsys.c
index 7b9f3d5..77d1c0c 100644 (file)
--- a/src/dos/vidsys.c
+++ b/src/dos/vidsys.c
@@ -207,7 +207,7 @@ void vid_blitfb(void *fb, int pitch)
 
 void vid_blitfb32(uint32_t *src, int pitch)
 {
-       int i, j, winpos, winleft;
+       int i, j, winpos, winleft, endskip;
        unsigned char *dest;
        uint16_t *dest16;
 
@@ -223,7 +223,7 @@ void vid_blitfb32(uint32_t *src, int pitch)
        if(vid_islinear()) {
                winleft = INT_MAX;
        } else {
-               winleft = 65536;/*cur_mode->win_size << 10;*/
+               winleft = cur_mode->win_size << 10;
                winpos = 0;
                vid_setwin(0, 0);
        }
@@ -242,22 +242,26 @@ void vid_blitfb32(uint32_t *src, int pitch)
 
        case 24:
                dest = vid_vmem;
+               endskip = cur_mode->pitch - cur_mode->width * 3;
+
                for(i=0; i<cur_mode->height; i++) {
                        for(j=0; j<cur_mode->width; j++) {
                                uint32_t pixel = src[j];
                                if(winleft <= 0) {
                                        winpos += cur_mode->win_step;
                                        vid_setwin(0, winpos);
-                                       winleft = 65536;/*cur_mode->win_size << 10;*/
+                                       winleft = cur_mode->win_size << 10;
                                        dest = vid_vmem;
                                }
-                               dest[0] = (pixel >> 16) & 0xff;
+                               dest[0] = pixel & 0xff;
                                dest[1] = (pixel >> 8) & 0xff;
-                               dest[2] = pixel & 0xff;
+                               dest[2] = (pixel >> 16) & 0xff;
                                dest += 3;
                                winleft -= 3;
                        }
                        src = (uint32_t*)((char*)src + pitch);
+                       dest += endskip;
+                       winleft -= endskip;
                }
                break;