On 8/18/06, Erich Berger <eb@randomseed.org
> wrote:
hi,
the work around also does not work for me (even with nvidia). as soon as
one starts to work with higher resolutions and non square gemwins it
becomes slow and tricky.
pix_snap2tex should not impose much of a performance hit unless the window resolution is really huge (2048x1536 or larger). If it does then it has probably fallen back to software to do a pixel format conversion or there is some other hardware incompatibility.
he implemented a clearmask message to gemwin but i have no idea
how to use it:
http://lists.puredata.info/pipermail/gem-dev/2003-09/000138.html
You need to get the GL_COLOR_BUFFER_BIT and related constants and make a mask. A better interface could be made for the message.
All it really does is enable or disable a buffer for clearing by glClear(). I recall that someone posted a patch not long ago that used the GEMgl calls to disable clearing the depth buffer, which does the same thing.
cgc