Nice, works for me. Is the idea that shaders are a efficient way of mixing video?
.hc On Dec 24, 2007, at 12:04 PM, vade wrote: > Hello > > Here is a 2 channel mixer using overlay blend mode with GLSL. This > works, is decently fast and gives me the expected result. > > If you want more blend modes, feel free to grab them from http:// > 001.vade.info (or elsewhere, most are trivial to figure out)- the > glsl shaders for the mixers use the same subroutine layout in the > glsl, so it is trivial to swap. I did not include them out of sheer > laziness. > > Caveats with PD 0.4.03 Extended nightly from Dec 24th (Mac OS X > 10.5.1, QT 7.3, Intel): > > - had to edit the GLSL program to fix multitexture coordinate > issue. Only can use the texture dims from the zeroths texture unit. > - could not get sampler2DRect working at all - only had a single > texel mapped it seemed. > - had weird issue where I would sometimes have to close the gemwin > (0, destroy) and then re create it to see the textures assigned to > texture units. > this happened most often after closing and re-opening the patch. > > Please see the included question(s) within the PD patch concerning > using framebuffer to grab the output of the rendered shader and > send it to yet another shader. Ive included an exposure shader in > an attempt to make a chain of GLSL effects. I however could not get > gemframebuffer to output any usable texture after using glslprogram. > > Thanks, hope this is helpful to those out there > > FUDDLE DUDDLE [EMAIL PROTECTED]@[EMAIL PROTECTED]()[EMAIL PROTECTED]([EMAIL > PROTECTED] > > :) > > <GEM_glsl_2_channel_mixer.zip> > _______________________________________________ > [email protected] mailing list > UNSUBSCRIBE and account-management -> http://lists.puredata.info/ > listinfo/pd-list ------------------------------------------------------------------------ ---- Using ReBirth is like trying to play an 808 with a long stick. - David Zicarelli _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
