- r_alphaToCoverageMipBoost scales the alpha value based on the current texture LoD
this prevents the "fading with distance" effect
- mip 0 dimensions are tested to decide whether contrast boosting around 0.5 is enabled
this is to deal with high r_picmip configs
- improved algorithm for excellent sharpness and minimized temporal artefacts
- GLSL 4.00 is required for the GL3 backend to use A2C (for textureQueryLod)
- renamed r_softSprites to r_depthFade
the term's more descriptive and it helps that UE4 uses it
- fixed the GL3 fragment shader halving the depth bias
- fixed the D3D11 pixel shader only fetching depth sample 0
not fixed for GL3 yet, see the code comments for that
- added support for more blend states
- added the q3map_cnq3_depthFade general shader directive
- ditched vertex colors (not wanted) and alpha tests (not needed) in the shaders
- using a Bezier fall-off to get much softer edges
- added no-depth-write transparent surfaces support by adjusting the depth test
- multiplying the diffuse texture's color by its alpha in non-opaque passes
- fixed triangle rejection based on cull type and normal direction
- reflecting normals in shaders to support two-sided surfaces
- rejecting surfaces with no diffuse stage or bad blend states as early as possible
- liquids get lit weaker than other surfaces
this is because it would draw (parts of) geometric edges with different colors and that makes visual inspections annoying
also, final MSAA sample counts are always reported by GL3 and GL2 now
