[Thuban-devel] Re: Status: Layer organisation

[Jan-Oliver Wagner]

On Fri, Apr 16, 2004 at 05:26:42PM +0200, Bernhard Herzog wrote:
> For the one-bit transparency, we'd need to extend the draw_raster_data
> method so that it either accepts an additional one-bit image with a
> clip-mask and/or accepts image format with equivalent transparency
> information.

I'd opt to this way instead of OpenGL for now.

Even this simple (yes/no) transparency feature would
bring massive improvement, because we could have
tiled raster images and stack e.g. WMS layers.

Eventually we might have to add an alternative rendering
based on OpenGL, but I don't see massice advantages correlated
to the work that needs to be done for that.

	Jan

-- 
Jan-Oliver Wagner               http://intevation.de/~jan/

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