added missing "modify" declarations in cdpmi.h inline assembly blocks

[dosdemo] / src / dos / gfx.c

diff --git a/src/dos/gfx.c b/src/dos/gfx.c
index b5670bf..d0128ee 100644 (file)
--- a/src/dos/gfx.c
+++ b/src/dos/gfx.c
@@ -25,11 +25,25 @@ static int fbidx;
 
 static int init_vbe(void)
 {
 
 static int init_vbe(void)
 {

+       int i, num;
+

        if(vbe_info(&vbe) == -1) {
        if(vbe_info(&vbe) == -1) {

+               fprintf(stderr, "failed to retrieve VBE information\n");

                return -1;
        }
 
        vbe_print_info(stdout, &vbe);
                return -1;
        }
 
        vbe_print_info(stdout, &vbe);

+
+       num = vbe_num_modes(&vbe);
+       for(i=0; i<num; i++) {
+               struct vbe_mode_info minf;
+
+               if(vbe_mode_info(vbe.modes[i], &minf) == -1) {
+                       continue;
+               }
+               printf("%04x: ", vbe.modes[i]);
+               vbe_print_mode_info(stdout, &minf);
+       }

        fflush(stdout);
 
        vbe_init_ver = VBE_VER_MAJOR(vbe.ver);
        fflush(stdout);
 
        vbe_init_ver = VBE_VER_MAJOR(vbe.ver);

@@ -56,7 +70,11 @@ void *set_video_mode(int xsz, int ysz, int bpp)
        mode = -1;
        nmodes = vbe_num_modes(&vbe);
        for(i=0; i<nmodes; i++) {
        mode = -1;
        nmodes = vbe_num_modes(&vbe);
        for(i=0; i<nmodes; i++) {

-               vbe_mode_info(vbe.modes[i], &minf);
+               if(vbe_mode_info(vbe.modes[i], &minf) == -1) {
+                       continue;
+               }
+               printf("trying to match mode: %d (%dx%d %dbpp)\n", vbe.modes[i],
+                               minf.xres, minf.yres, minf.bpp);

                if(minf.xres != xsz || minf.yres != ysz) continue;
                if(minf.bpp == bpp) {
                        mode = vbe.modes[i];
                if(minf.xres != xsz || minf.yres != ysz) continue;
                if(minf.bpp == bpp) {
                        mode = vbe.modes[i];