The book of inspiration

March 9, 2010

WebGL on Old Hardware with MESA

Filed under: tech — Tags: , , — zproxy @ 8:03 am

 

WebGL now seems to be  mature enough to add support in jsc.   This would mean you could develop your WebGL applications in C#, Visual Basic or F#. The trick is to get it working on my machine. It seems my graphics card does not support OpenGL ES 2.

TypeError: Object #<a WebGLRenderingContext> has no method 'getShaderi'

Running dxdiag tells me that my Video card Chip Type is ATI Radeon Xpress 1200 Series.

The last time I updated Video card drivers on my machine there were some serious issues due to the fact the application had some issues with the .net framework. As a developer I have all versions of it and it caused problems.

While searching around I found GPU Caps Viewer.

As I can see I have GLSL Version 1.2 – not good.

[...] many common Intel graphics cards doesn’t have OpenGL drivers

[khronos] I’ve found that Firefox needs at least OpenGL 2.0 support on the graphics card’s driver, otherwise it will fail over to using MESA if it knows where to find the library. I usedhttp://www.realtech-vr.com/glview/ to find out what version of OpenGL the driver supported, though there may well be better ways.

Maybe I should try the MESA software rendering with Minefield?

To launch a new proccess:

firefox.exe -no-remote
you need to tell Firefox where to find: 
open up about:config, and set the preference 
webgl.osmesalib to the path of OSMESA32.DLL

Are we done? No.

Error: gl.getShaderi is not a function
Line: 31

Error: gl.getShaderi is not a functionSource File: http://people.mozilla.com/~vladimir/webgl/spore/sporeview.jsLine: 31

Are we done? Yes.

Software rendering seems to be very slow. The Minfield (almost) locks up.

So what else works?

  1. Animated Cube
  2. Lesson 1
  3. Lesson 2
  4. Lesson 3 – rotating, cool :D
  5. Lesson 4 – rotating mesh, a little slower
  6. Lesson 5 – rotating textured cube, quite slow
  7. Lesson 6 – user rotated textured cube, rather slow
  8. Lesson 7 – with light
  9. Lesson 8 – transparent cube, very slow
  10. Lesson 9 – moving objects
  11. Lesson 10 – nano doom, too slow
  12. Lesson 11 – sphere, too slow
  13. Lesson 12 – rotating sphere with light – a little slow
  14. Lesson 13 – too slow
  15. Lesson 14teapot model, nice :)
  16. Lesson 15 – rotating earth, too slow

Should jsc also support converting (C#, F#) IL to HLSLx-shader/x-fragment“?

Would be cool to write a shader effect, debug it in Windows Presentation Foundation and run it in browser on javascript within WebGL.

Update:

OpenGL ES 2.0 is not supported on lots of common hardware. That means
there are a lot of machines that will not be able to run WebGL.

WebGL, being 100% dependent on JavaScript to do an application’s scene
graph, is going to have serious problems drawing more than a few pieces of
geometry at 60hz except in very special cases or on very fast machines

1 Comment

  1. [...] Filed under: jsc — Tags: webgl — zproxy @ 10:52 am Today, on another machine with I was able to test out WebGL. When I have a demo where WebGL was programmed from .NET source code I will make a post about [...]

    Pingback by WebGL « c# to javascript, actionscript — June 5, 2010 @ 10:52 am


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