Changeset c7f9037 in mainline

Timestamp:

2011-09-09T23:26:18Z (13 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

cccc091

Parents:

b7c33b0

Message:

avoid touching the whole scanline
(this can be harmful on some framebuffers, e.g. on Sun Ultra 60)

File:

• uspace/srv/hid/fb/port/kfb.c (modified) (2 diffs)

uspace/srv/hid/fb/port/kfb.c

@@ -422 +422 @@
 {
         if (kfb.backbuf == NULL) {
-                kfb.backbuf = malloc(kfb.size);
+                kfb.backbuf =
+                    malloc(kfb.width * kfb.height * kfb.pixel_bytes);
                 if (kfb.backbuf == NULL)
                         return ENOMEM;
         }
         
-        memcpy(kfb.backbuf, kfb.addr, kfb.size);
+        for (sysarg_t y = 0; y < kfb.height; y++)
+                memcpy(kfb.backbuf + y * kfb.width * kfb.pixel_bytes,
+                    kfb.addr + FB_POS(0, y), kfb.width * kfb.pixel_bytes);
+        
         return EOK;
 }
@@ -436 +440 @@
                 return ENOENT;
         
-        memcpy(kfb.addr, kfb.backbuf, kfb.size);
+        for (sysarg_t y = 0; y < kfb.height; y++)
+                memcpy(kfb.addr + FB_POS(0, y),
+                    kfb.backbuf + y * kfb.width * kfb.pixel_bytes,
+                    kfb.width * kfb.pixel_bytes);
+        
         return EOK;
 }