Changeset 94450 in vbox

Timestamp:

Apr 4, 2022 8:20:58 AM (3 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

150780

Message:

DevVGA: Added split screen functionality for text modes (not quite accurate).

File:

• trunk/src/VBox/Devices/Graphics/DevVGA.cpp (modified) (2 diffs)

trunk/src/VBox/Devices/Graphics/DevVGA.cpp

@@ -1786 +1786 @@
         height = (height + 1) / cheight;
     }
+    /** @todo r=michaln This conditional is questionable; we should be able
+     * to draw whatver the guest asks for. */
     if ((height * width) > CH_ATTR_SIZE) {
         /* better than nothing: exit if transient size is too big */
@@ -1968 +1970 @@
 
         /* Line compare works in text modes, too. */
-        if ((uint32_t)cy == pThis->line_compare)
-            s1 = 0;
-  }
+        /** @todo r=michaln This is inaccurate; text should be rendered line by line
+         * and line compare checked after every line. */
+        if ((uint32_t)cy == (pThis->line_compare / cheight))
+            s1 = pThisCC->pbVRam;
+    }
     if (cy_start >= 0)
         /* Flush any remaining changes to display. */