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 !@#!@#!@#()*!@#(*@#
:)