(Slick2D) setFilter Resource not found?

Newbie & Debugging Questions
#1

Seems that whenever you create a new image in slick that has no texture, setting its filter throws an exception that complains about the resource not being found. I am trying to double buffer something. Any thoughts as to how to apply a filter to a buffer image?

#2

I’m sorry, I have no answer for your question.

And I know those questions are often somehow contra-productive, but:
Why are you trying to double buffer something in OpenGL? OpenGL’s framebuffers in LWJGL are ALL doublebuffered.

#3

I’m trying to avoid visual artifacts. I either have to settle for making my tiles 32x32, or 64x64. 32x32 is too small, and 64x64 is too big, so I want to scale the entire screen down by about 30%. Well, TiledMaps generally don’t scale well, so I decided to buffer all the content to an offscreen buffer, then scale the buffer.

#4

Creating a Slick image with no texture should not be possible; it will likely throw a null pointer since Texture is expected to be non-null.

For offscreen buffers where you plan to use getGraphics, you should use the new Image.createOffscreenImage utility and specify a filter there.

I don’t understand why you don’t just use non-power-of-two tiles, e.g. 45x45. ???

P.S. In future, always post the exception.

#5

Also the artifacts are propably only because you didn’t create mipmaps or you didn’t enable antialiasing.

#6

Non power of two tiles don’t fit quite as well on my sprite sheets… Well, that WOULD solve my problem, but let me play the devil’s advocate for a moment. What would be the best course of action if I wanted my game’s camera to zoom in and out occasionally?

Edit: Before I forget, I would like to point out that I’ve never been able to download a copy of slick that has the method createOffscreenImage() located in the Image class. Am I perhaps downloading the incorrect distribution? I always try to find the latest, but I can’t seem to find one with that method. I only every see it in examples.

#7

You probably talk about Bleeding, I made a thread once: http://www.java-gaming.org/topics/bleeding/26823/view.html
There are things you can do, but its all… not that straightforward… well unless you just use NEAREST filter and screw the quality