Allow enabling post processing effects in-game

[Adomas Jackevičius]

Hello,

After installing 0 A.D. on Arch Linux when I launched it I set graphics options what I call to "max" and when I entered game it was BLACK SCEEEN. I got confused. Disabling one by one options in Graphics Options menu I found out that Post Processing causes the trouble. To enable Post Processing I had to restart the game, but the tooltip did not mention that. Not sure if it's a bug, but it should reload the engine so it displays correctly after settings change or smth.

Running Arch Linux x86_64 on GTX 780 GPU

[dan_trev]

PostProc_v1.patch fixes this. It was an initialization bug like the LOS bug from #2513.

Works by calling the Initialization routine whenever a public routine is called.

void CPostprocManager::Resize() is the exception. It will only recreate the buffers if the buffers are active. That way the current screen size is always correct without unwanted buffer updates.

void CPostprocManager::Cleanup() - moved to private

std::vector<CStrW> CPostprocManager::GetPostEffects() - changes fron const to static

[dan_trev]

Bug confirmed on Windows 7 64 bit and Debian Jessie x64bit

[Itms]

Don't forget to update the milestone. I didn't look at the patch at all, so I'll just put A17 and if it's not trivial we'll push it later.

[dan_trev]

See #2514 for more information.

[historic_bruno]

The patch works for me on Windows 7. Need to take a look at the code to see if it initializes/shuts down cleanly, if so we can commit it.

[historic_bruno]

#2561 was also a duplicate of this.

[Itms]

In 15843:

Allow enabling the post processing filters during a game.
Includes numerous code updates, also updated the copyright for r15841.

Patch by dan_trev, fixes #2672.

[Itms]

Thanks for that patch!

I reopen it and push it because I'll have to update a string once the release is over. The fix is included for A17 though, along with the code updates.

[ben]

In 15905:

Fixes init of post processing effects, so they can be cleanly enabled/disabled at runtime. Fixes #2890, refs #2672, #2893.
Updates descriptions on options screen and fixes comment in default.cfg (smoothlos does not require preferglsl)

[Itms]

Ugh, seems like everybody had forgotten this one :)