error.

runnign under GTK/SSH/X11.

GLSLShader.loadAtts before setting the vertex attribute divisor. Other
associated changes to initial refresh - it now occurs after all
eigenvector/value textures are ready.

schedule a 'create' function (to create a GLObject), as it was never
able to capture the GL context.

state until image textures are ready to be used. New async.wait function
to help with this.

running. GLModel has to implement GLObject.ready() method.

via a new function async.idle (which abstracts away wx-iness). This
means that the status-bar is actually updated during startup.

uses this to prepare texture data, and GLObjects query ImageTextures to
make sure that they are ready - they are not drawn until textures are
ready. I have discovered that all my changes to prefilter were useless -
rgbvector/tensor vector texture is currently broken.