vbe mode query

[bootcensus] / src / test / vbetest.c

diff --git a/src/test/vbetest.c b/src/test/vbetest.c
index 1525bd8..177eac3 100644 (file)
--- a/src/test/vbetest.c
+++ b/src/test/vbetest.c
@@ -1,3 +1,4 @@
+#include <stdio.h>
 #include <string.h>
 #include "video.h"
 #include "asmops.h"
@@ -7,7 +8,20 @@ static uint16_t *framebuf;
 
 int vbetest(void)
 {
-       if(!(framebuf = set_video_mode(640, 480, 16))) {
+       int i, nmodes;
+       struct video_mode vi;
+
+       nmodes = video_mode_count();
+       printf("%d video modes found:\n", nmodes);
+       for(i=0; i<nmodes; i++) {
+               if(video_mode_info(i, &vi) == -1) {
+                       continue;
+               }
+               printf(" %04x: %dx%d %d bpp (%d%d%d)\n", vi.mode, vi.width, vi.height, vi.bpp,
+                               vi.rbits, vi.gbits, vi.bbits);
+       }
+
+       if(!(framebuf = set_video_mode(find_video_mode(640, 480, 16)))) {
                return -1;
        }