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README.md
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touchDesigner_lookup_3d.glsl.txt
touchDesigner_lookup_3d.glsl.txt
 
 

README.md

Touch Designer Utilities

Extensions to Touch Designer

3D LUT Support

To use the glsl in Touch Designer, follow these steps

  • Create a GLSL TOP.
    • Call this 'glsl_lookup_3d'
  • Create a Text DAT.
    • Call this 'glsl_source_lookup_3d'. This name is important.
  • Create a MovieIn TOP.
    • Load in your 3d LUT image.
    • The identity LUT image is in the 'scripts' folder. It is not the same as the Nuke CMSPattern LUT image.
  • Connect the image that you want to apply the LUT to to your the GLSL TOP's first input
  • Connect the LUT MovieIn TOP to the GLSL TOP's second input
  • Open the GLSL TOP's parameters (as seen in the screenshots)
    • In the 'GLSL' parameter tab, type 'glsl_source_lookup_3d' into the Pixel Shader parameter
    • In the 'Common' parameter tab, switch 'Input Smoothness' to 'Nearest Pixel'

If you want to use a LUT with a different resolution or tile layout, swap out the parameter on the second to last line of the GLSL file. They are currently 32, 8, 4 for a 32x32x32 LUT that is laid out 8 tiles wide and 4 tiles high in the LUT image.