16 bit float texture upload

[noncopyable]

@NiCo1

IMHO, they should only add GL_HALF_FLOAT_ARB to the dependencies of the GL_ARB_texture_float spec.

Good idea.

[system]

@NiCo1

So if your hardware exposes GL_ARB_half_float_pixel, you should be able to upload fp16 data using GL_HALF_FLOAT_ARB as the type parameter of your glTexImage calls. If it doesn’t work, your hardware is not compliant with the specs.

IMHO, they should only add GL_HALF_FLOAT_ARB to the dependencies of the GL_ARB_texture_float spec.

Or maybe I still don’t get what the problem is after 2 pages on this topic

N.

That’s pretty much it. I was finding it strange that the ability to upload the HALF float texture is left to another spec that’s why I suggested to make ARB_texture_float for 32 bit
ARB_texture_halffloat for 16
ARB_texture_double for a possible future.

and no dependency on another extension.

[NiCo1]

You’re right, splitting it up into GL_ARB_texture_halffloat and GL_ARB_texture_float certainly would have been the better way to go about it.

If this isn’t possible anymore, maybe it would be better to put GL_HALF_FLOAT_ARB into the core GL functionality as it can perform precision substitution on the driver side from/to fp32 if fp16 isn’t available.

N.