Incase you want to know what GDI operations are currently accelerated look here:
http://msdn.microsoft.com/en-us/library/dd445349.aspx
Currently covers:
FillRect,
BitBlt,
StretchBlt,
AlphaBlend,
TransparentBlt,
ClearType
and all the ROP2/ROP3 combinations of the above.
Note that lines\outlines, bezier curzes, round parts of ellpises\rectangles are not accelerated.
This makes sense as CPU faster at 2D drawing than GPU (as GPU only does 3D).
But the GPU can perform very fast memory operations on rectangular regions.
http://msdn.microsoft.com/en-us/library/dd445349.aspx
Currently covers:
FillRect,
BitBlt,
StretchBlt,
AlphaBlend,
TransparentBlt,
ClearType
and all the ROP2/ROP3 combinations of the above.
Note that lines\outlines, bezier curzes, round parts of ellpises\rectangles are not accelerated.
This makes sense as CPU faster at 2D drawing than GPU (as GPU only does 3D).
But the GPU can perform very fast memory operations on rectangular regions.