Floating Point Textures
Nobody is entirely sure.
The Valve guys mentioned something about having to do each skybox 4 times, which suggests that each channel of the sky is a seperate image which is then assembled into an FP format at runtime. I don't know of any tools that allow you to edit floating point textures directly, which is unfortunate.
The Valve guys mentioned something about having to do each skybox 4 times, which suggests that each channel of the sky is a seperate image which is then assembled into an FP format at runtime. I don't know of any tools that allow you to edit floating point textures directly, which is unfortunate.
Author
Nooo, how do I create them in OpenGL, so I could render the HDR portions of the image on them?
[EDIT]
I think it can be done using 'glTexImage2D', 'glCopyTexImage2D' and 'GL_RGB16F_ARB'.
I'm trying to figure it out right now.
[EDIT]
I think it can be done using 'glTexImage2D', 'glCopyTexImage2D' and 'GL_RGB16F_ARB'.
I'm trying to figure it out right now.
float *data = new float[Width * Height * 4];glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F_ARB, Width, Height, 0, GL_RGBA, GL_FLOAT, data);That should work
Quote:Original post by Code-RNo. (Hint: Read about High Dynamic Range (HDR) rendering.)
isn't 32f overkill?
If you mean he could use 16F instead of 32F, then I guess it's all just down to your needs.
Quote:Original post by PromitQuote:Original post by Code-RNo. (Hint: Read about High Dynamic Range (HDR) rendering.)
isn't 32f overkill?
If you mean he could use 16F instead of 32F, then I guess it's all just down to your needs.
Ditto :)
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