OpenGL and ICM Color Management

[Noel Carboni]

I'm looking into ways to move my plugins to the use of OpenCL and OpenGL to take advantage of the power in modern GPUs.

Specifically, with the Windows GDI, ICM color management can be set up to be done automatically through calls like BitBlt(), and in fact I do this.

Can someone here point me in the right direction to learn how one might best handle color spaces when using OpenGL in place of the older Windows GDI calls?

Thanks!

-Noel

[Chris Cox · Accepted solution]

OpenGL pretty much ignores color management -- it's up to the developer to manage color before going to GL, or to use a shader to implement color correction inside GL (Photoshop does both, depending on the capabilities of the GPU).

Side note:  ICM is just Microsoft's implementation of ICC color management standards, much like ColorSync is Apple's implementation.

[Noel Carboni]

Thanks.  That's what I was starting to infer from the lack of OpenGL and ICC color management information together.

-Noel