- Always allow skyboxes by default
- Add option to disable skyboxes through mapinfo
Squashed commit of the following:
commit d4c4d9310d0157ce575f52989b5b080398cf7629
Author: Marisa Kirisame <marisa@sayachan.org>
Date: Wed Dec 30 09:58:39 2020 +0100
Disable AO for skybox portals (can be forced back with MAPINFO flag).
* made the portal state global, outside the framebuffer, because it is pure logic state without dependencies on the backend.
* took the setup functions out of FDynLightData - there is no need to have them as members and they age game dependent.
This shouldn't be in the hardware independent interface because the semantics on OpenGL and Vulkan are too different, so a common implementation is not possible.
Most bind calls were in the GL interface anyway, so these no longer pass through hardware independent code.
This also moves the bind calls in the shadowmap code into the GL interface - these never did anything useful in Vulkan and aren't needed there.
Last but not least, this moves the legacy buffer binding handling into FGLRenderState and performs the initial binding for the light buffer in a more suitable place so that this doesn't have to pollute the render state.
