[tkreuzer] 47719: [WIN32K] If pbmiSrc->bmiHeader.bV5ClrUsed is 0, calculate the number of colors from the bit depth. Fixes black taskbar icons with vbox driver on 8 bpp

Author: tkreuzer
Date: Wed Jun  9 18:08:23 2010
New Revision: 47719

URL: http://svn.reactos.org/svn/reactos?rev=47719&view=rev
Log:
[WIN32K]
If pbmiSrc->bmiHeader.bV5ClrUsed is 0, calculate the number of colors from the bit
depth. Fixes black taskbar icons with vbox driver on 8 bpp

Modified:
    branches/reactos-yarotows/subsystems/win32/win32k/objects/dibobj.c

Modified: branches/reactos-yarotows/subsystems/win32/win32k/objects/dibobj.c
URL:
http://svn.reactos.org/svn/reactos/branches/reactos-yarotows/subsystems/win…
==============================================================================
--- branches/reactos-yarotows/subsystems/win32/win32k/objects/dibobj.c [iso-8859-1]
(original)
+++ branches/reactos-yarotows/subsystems/win32/win32k/objects/dibobj.c [iso-8859-1] Wed
Jun  9 18:08:23 2010
@@ -1951,15 +1951,21 @@
     else
     {
         INT i;
+        ULONG cColorsUsed;
+
+        cColorsUsed = pbmiSrc->bmiHeader.bV5ClrUsed;
+        if (cColorsUsed == 0) 
+            cColorsUsed = (1 << pbmiSrc->bmiHeader.bV5BitCount);
+
         if(dwColorUse == DIB_PAL_COLORS)
         {
             RtlCopyMemory(pbmiDst->bmiColors,
                           pbmiSrc->bmiColors,
-                          pbmiSrc->bmiHeader.bV5ClrUsed * sizeof(WORD));
+                          cColorsUsed * sizeof(WORD));
         }
         else
         {
-            for(i = 0; i < pbmiSrc->bmiHeader.bV5ClrUsed; i++)
+            for(i = 0; i < cColorsUsed; i++)
             {
                 SetBMIColor(pbmiDst, (DWORD*)pbmiSrc->bmiColors + i, i);
             }