Flickering on some mines in-game when camera moves

[historic_bruno]

This has long been noticeable on the gold mines around player 1's base on Acropolis I. If the camera was moved slightly, the mine would go darker or lighter. I don't notice it in Atlas. Here's a comparison to show the difference, but it's more annoying and visible in motion:

Curiously, r13603 changed the map's PostEffect from "hdr" to "default" and the glitch went away. The only config options needed to reproduce this for me are

preferglsl=true
gentangents=true

(so it seems post processing is affecting rendering even when postproc=false.)

OS             : Win7 SP 1 (6.1.7601)
CPU            : x86,        Intel Core i7-2600K @ 3.40GHz (1x4x2), 3.39 GHz
Memory         : 8192 MiB; 5098 MiB free
Graphics Card  : ATI AMD Radeon HD 6800 Series
OpenGL Drivers : 4.2.12217 Compatibility Profile Context 12.104.0.0; atioglxx.dll (6.14.10.12217)

[historic_bruno]

Scratch the part about PostEffect, it happens either way.

A similar glitch on field decals: