Native bindings to the EXT_gl_colorspace_display_p3_passthrough extension.

Applications that want to use the Display-P3 color space (DCI-P3 primaries with sRGB-like transfer function) can use this extension to communicate to the platform that framebuffer contents represent colors in the non-linear Display-P3 color space.

The application is responsible for producing appropriate framebuffer contents. An application would want to use this extension rather than EXT_gl_colorspace_display_p3 if they apply the sRGB transfer function themselves and do not need the HW to do it.

Requires KHR_gl_colorspace.