On Wed, 16 Feb 2005 11:01:50 -0500 Timothy Miller <[EMAIL PROTECTED]> wrote:
Hardly usefull. Although to overlay/blit units would be a cool feature :)
s/to/two/ damn typos
Well, it's not a big deal to design the video controller to put an 8-bit paletted overlay over 24-bit color. Using planemasks and other things, we can cause the video to be written directly into the viewable framebuffer only into the upper 8 bits. The drawback is that you can't have an alpha buffer in your viewable framebuffer.
A simple colour mask is enough. I don't see any use of using any special method than this.
Or do you have something in mind i do not see ?
Attila Kinali
well, if the frame buffer is 32 bits per pixel, as I seem to remember, it would be even nicer to use the 8 remaining bits as alpha so that the video buffer gets alpha composited with the drawing buffer...
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