1) bugfix computing Gaussian BLUR kernel (for odd radii, the last offset was incorrectly computed)2) introduce more advanced method of detecting BLUR halo (compute depths in a new way)
Merging blurred surfaces mostly ok now (blurred image still appears a bit shifted down for some reason)
Simplify shaders.
Make it more flexible; now it can run almost all apps on OpenGL 2.0 contexts; OpenGL 3.0 ( with GLSL 3.00) required for POSTPROCESSING.
Upgrade from GLSL 1.00 to GLSL 3.00 ESIntroduce separate BLUR1 and BLUR2 shaders, the second one marging (writing to gl_FragDepth still does not work)