Re: [XaraXtreme-dev] Cairo Port

[Jonas Diemer <diemer@xxxxxx>]

Luke Hart schrieb:
> Jonas,
>
> I've attached a couple of source files from a performance testing 
> application I wrote to compare CDraw and Cairo (amongst other vector 
> libraries). They should give you some idea about what calls to CDraw 
> are (roughly) equivalent to which Cairo calls.

Thanks for that.

> The calls I used to setup the bitmap surface are cairo_create and 
> cairo_set_target_image. 

Hmm. In my cairo version, cairo_create wants a cairo_surface_t as an 
argument. Also, cairo_set_target_image is depricated in my cairo version.

It looks like the current Cairo does not want the user to exchange the 
target surface of a cairo_t context.

Actually, I am a bit confused now about the rendering process. What are 
the following two functions exactly used for and how do they relate?

GDraw_GetChangedBBox
GDraw_SetDIBitmap

Thanks in advance,

Jonas.