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[Goran]

Xna (reach profile) GraphicDevice.SetRenderTarget clears the target. To purple. Despite what render usage suggests. Why? Because XBox does it? It seems helpful not to be able to change render targets. I mean, why would you use that? You wish to do some cpu post-processing? Here's purple. So why purple? "To avoid the hate mail that would have come from the original neon green!"

Thank you Xna!

[Ben_Hurr]

lol what

Shouldn't you be able to clear the buffer to whatever color you want?

[Goran]

Yes you can clear it again if you want. To whatever color you choose. But whatever you had drew up to that point is gone...
So I wanted:
1. Draw a few things to backbuffer
2. SetRenderTarget(mytarget)
3. Draw a few things to my target - apply post-processing effects
4. SetRenderTarget(null) <- back to backbuffer
5. Draw from my target to backbuffer
Guess what - nothing from step 1. survives

[QuadrupleA]

Hey Goran - that should normally work - I'd suspect something's happening in the "apply post-processing effects" part. Normally a post-process shader requires another intermediate render target than what you have.

[Goran]

Sadly no. http://blogs.msdn.com/b/shawnhar/archive/2007/11/21/rendertarget-changes-in-xna-game-studio-2-0.aspx
Not to mention I can't get it to work "the old way" even following the suggestions

[BleakProspects]

Yes you can clear it again if you want. To whatever color you choose. But whatever you had drew up to that point is gone...
So I wanted:
1. Draw a few things to backbuffer
2. SetRenderTarget(mytarget)
3. Draw a few things to my target - apply post-processing effects
4. SetRenderTarget(null) <- back to backbuffer
5. Draw from my target to backbuffer
Guess what - nothing from step 1. survives

I feel your pain. I've been writing post-processing shaders in XNA for a while now, and every time I get the "purple screen of death" I twitch a little.

[Impmaster]

Exporting in Eclipse. It should be as easy as File->Export->Runnable Jar. But nooo. The stupid IDE won't let me export a project that works perfectly in the IDE.

[EdgeOfProphecy]

Modifying a physics material at runtime in Unity is allowed, but produced aberrant behavior, while setting a collider's material works perfectly fine.  Never saw mention of this anywhere in the docs.  I spent an hour going insane, thinking there was some painfully obvious mistake I'd made before I figured this out.

[Ludophonic]

Using IOHIDManager to try and tell if my "mouse" events are actually coming from the trackpad.

The trackpad reports itself as a mouse of course.

[Crimsontide]

No intellistupid, that namespace name is not ambiguous, now give me my hilighting back you cheap bastard...

I hate how syntax hilighting is tied to intellistupid in VS2012.

[Geti]

Use codeblocks or something and hook it up to vs compiler if you need to use it and hate the VS IDE. I do that on my weaker laptop, don't have an installer for old VS any more and new VS is heavy as fuck.

[Crimsontide]

No, I love it when it works...  VS and I have a love-hate relationship, but you'd have to tear it from my cold dead fingers before I gave it up.

TBH (and not trying to be mean here at all, tone is so hard to convey over the internet) but I really don't understand when people complain about the IDE or compiler being 'heavy' (ie. having performance issues).  I've never had performance issues, I have more than enough core's and gigs to throw at it.  Even in my largest projects the speed at which I work is always far slower than the speed at which my IDE works.

[Geti]

Fair enough. Starting Modern VS on my dated laptop is profoundly "un-fun", but there's no issue on my main dev box.

[nikki]

I really don't understand ... 'heavy' (ie. having performance issues).  I've never had performance issues, I have more than enough core's and gigs to throw at it.

Not everybody has your core's and gigs obviously, that's hard to understand?

[Quarry]

Someone has bad laptoooop!

[nikki]

well this is the grumpy old programmer room
and vs does make me grumpy, eager for many gigs and cores, while it's just a fucking glorified texteditor.

[ThemsAllTook]

Using IOHIDManager

Oh dear. That's enough to make you grumpy on its own.

[Ludophonic]

Using IOHIDManager

Oh dear. That's enough to make you grumpy on its own.

I actually don't find IOHIDManager all that hard to use. It's waaaay better than what you had before it was added OS X with Leopard. And better than the Windows equivalent.

It's just the fact I need to use it at all for this which is annoying.

[kamac]

Memory leaks. Memory leaks everywhere.

[zacaj]

Memory leaks. Memory leaks everywhere.

C/C++?