Author archives: Mike

Moving forward on the GLSL tutorials.  Latest introduces the use of structures and arrays.  Needs more commentary, but I'm off to friends' for dinner.

I'm beginning to think that the "code walkthrough" style is just way too involved for many of these tutorials/demos.  Most of them can be reduced to "define scenegraph", maybe set up a few event handlers to manipulate it.  I think I'll go back to the low-level tutorials when I get a chance to work on ...

Spent the whole day on OpenGLContext.  I bashed out a "molehill" tutorial based on the classic from Mark Kilgard), mostly to verify that the NURBS stuff really isn't broken[1], and did a bit of work creating a "gear" geometry type (not satisfied with that one at all, very dull looking).  I made the ROUTE mechanism ...

Sometimes you get discouraged about a project that you work on all the time.  You think "no one uses it, so I may as well just do whatever I feel like doing".  Over the years, you lose track of the idea of releasing it as a working piece of software, you just sort of think ...

Second alpha of the 3.0.1 series includes a number of bug-fixes from PyOpenGL 3.0.1a1, as well as updated extensions (including OpenGL 3.1 core).  The new extensions are currently just auto-generated, so if you see something that needs special wrapping, feel free to ping me.  The OpenGL.org extension header now breaks out the deprecated/non-deprecated functionality, so ...

Spent the day at Science 2.0 down at the Mars Centre.  Kinda freaky how many people I am getting to know at these things.  Greg is, as was mentioned, definitely a node in the connectivity graph.  The *P marketing department did a presentation, I've never personally looked into the system, but the few quick snippets ...

Doing a bit more on the shader tutorial stuff.  Up now is the first crack of the diffuse+ambient (with directional light) introduction.  Very much a fast bash-out, but whatever :) .

Decided to get at least *some* PyOpenGL stuff done this weekend, so played around a little with the texture-atlas-based text rendering stuff.  I went with a spike test rather than trying to refactor the whole font engine in OpenGLContext at the first go.

I spent the longest time figuring out why the texture always came ...

Selenium rocks.  Unfortunately, every time I sit down at a new client I wind up having to do boilerplate setup to get a nose-testable Selenium environment.  By nose-testable I mean something that automatically sets up and closes down the selenium server (and the client servers under test, though that's a separate issue).

To be useful ...

I'm always wary of adding non-standard functionality to PyOpenGL, but as I've been trying to write tutorials for how to use shaders I'm finding that it really is necessary to have a module that provides the appropriate "alternate" definitions and provides the basic compileShader/compileProgram functions (with error checking and log extraction).

So, to use a ...