http://bugs.winehq.org/show_bug.cgi?id=9736
--- Comment #12 from Eike Hein hein@kde.org 2007-10-27 10:25:13 --- Created an attachment (id=8797) --> (http://bugs.winehq.org/attachment.cgi?id=8797) Screenshot demonstrating the distance-dependant properties of the bug
This screenshot, was taken with wine 0.9.48, might hold further clues as to the exact nature of the problem. The camera position in relation to the game board surface appears to be a significant factor. Let me try to break it down:
* When zoomed in close to the landscape, objects on it appear very dark, as established above. At that distance, however, the entire landscape is lit correctly, i.e. the map area where I have my cities and other units is bright, and areas I have no cities/units on or haven't uncovered yet are correctly covered by "fog of war", with soft transitions from uncovered to covered.
* When I zoom out further, two things happen:
(a) The city objects, previously defectively rendered dark suddenly become correctly rendered bright, whereever the game logic allows me to see them. Other objects - buildings outside the city, streets and railroads - remain dark.
(b) Simultaneously, the landscape, which morphs into a sphere the further one zooms out, stops being rendered correctly. Only a part of the sphere is properly lit as it was when it was zoomed in, the rest is blackened. This is the problem I alluded to at the end of comment #11.
The distance at which those two things happen appears to be identical. As the cities "light up", large parts of the map sphere go dark. The blackening of those parts of the sphere are not a gameplay device; the demarcation line doesn't match up with the game's "fog of war" mechanic as shown when zoomed in closely.