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creating dynamic jit.gl.cubemaps with textures

June 3, 2014 | 10:58 am

Hi

I would like to create jit.gl.cubemap’s in a dynamic way. I have a 6 camera-rig which captures 6 textures for each of the cubemaps directions. however, jit.gl.cubemap only accepts jitter-matrixes but no textures. to my knowledge jit.gl.cubemap is actually a texture – of the type "samplerCube" – and can be accessed through shaders as well.

so my questions:

1. is there a way to create a sampleCube texture with 6 2d-textures without leaving the GPU? (there is obviously the way to convert textures to matrices and then pass it to jit.gl.cubemap – but thats way to slow)

2. How could I access a sampleCube texture via shader? can it be applied to an object like other textures via the "texture" message? I know it must be possible but I didnt find any working example.
unfortunately the example code that could answer me this questions is gone from the virtual space -> robert ramirez posted there an example code that is no more.

  • This topic was modified 3 months by  maybites.
  • This topic was modified 3 months by  maybites.

June 3, 2014 | 11:50 am

ok, question 2) I was able to answer myself. I got my own version of chromatic aberration working.

what is missing now is the dynamic part. I need to create a cubemap from the point of view of the torus (see example patch) in order to create the same illusion as here : http://www.ozone3d.net/demos_projects/chromatic_aberration.php.


June 4, 2014 | 8:13 am

thanks for the request.
this is something i’m planning to implement in a future version, so consider your request noted.


June 4, 2014 | 9:21 am

Hi rob.

this is something i’m planning to implement in a future version, so consider your request noted.

Thats good to hear. I have also planned to be playing with 3dtextures and noticed that the only way to add a subtexture is through a matrix. is there a way to add 2dtextures as subtextures in a 3dtexture?


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