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yoavip

OpenGL using 12-bits intensity texture with colortable

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Hi, I have an image with 12-bit data (0-4095 values) and I need to display it. I need a look up table from the image values to RGBA format. I thought I should load the image buffer into an opengl texture, and use the glColorTable to control how the values are rendered. Is my direction correct ? I'm using pyOpenGL, can someone point me to an example code that uses GL_INTENSITY values of 12 bits, and example of using glColorTable ? Thanks, Yoav

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Recent GPUs don't support color tables.
You would need to upload your color table as a texture and do a lookup by yourself using a fragment shader.

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