Blurry

Scripting Issues
1

I’ve noticed that my in-game images are quite a bit blurry compared to the original images. In the past, I figured that this was due to problems with scaling. But I’ve now corrected for that, I’m still getting problems:

For a full screen image with the original image the same exact size as the game screen this should work:

self.image = OnscreenImage(image = "Story/titlescreen.png", scale = base.camLens.getAspectRatio(), pos = (0,0,0))
self.image.setSz(1)

This image shows the problem. The top image is a zoom-in of what I get in-game. The bottom is the source image. As you can see, it looks pretty bad compared to the original.

I’ve heard about there being a half-pixel problem with text and Windows with OpenGL is this a similar problem? Any ideas on how to fix this?

2

that sounds like the infamous “your texture is not a power-of-2-size and thus gets reascaled automatically to a lower resolution” problem.
try to use power of 2 textures. or enable non-power-of-2 textures in your config file.

3

Thanks, that did it. It does kind of suck though that you have to go through all that math to just get it to scale it as it should be. Also I had to cut up my image to smaller power of 2 images to cover the screen space.

But it worked. Here’s a screenshot with my wormhole shader running on the title screen.

4

You could turn your image to 3d flat model (Blender has a script for that) and attach it to render2d. You dont really need power of 2 in this case and rescaling the window isnt a problem, too.
But monkey in my head can be wrong

5

Anon : the thing is. the gpu prefers power-of-2-textures. old gpu’s can handly po2textures only. modern gpu’s have support for arbitarily sized textures but po2textures are still prefered. because panda , by default settings, tries to keep maximum compatibility with all kind of hardware, including old one. panda rescales non-power-of-2 textures to the nearest power-of-2-size. that’s when it gets blury. you can explicitly tell panda to use those non-power-of-2-textures if the gpu supports them. but it’s not advised unless really neccessary.

6

Do you mean images or textures?

7

textures. but usualy you load them from images. so your images should be a power-of-2 if you are going to use them as textures (which is usualy the case)

8

I dont know,

image = loader.loadModel( "image" )
image.setPos(0,0,0)
image.setScale(1)
image.reparentTo( aspect2d )

this seems to work without power-of-2 by default

9

Well, Anon, I haven’t had the same luck. The code you have would have given me a very blurry image.

I think ThomasEgi was right, despite all my proper scaling to get pixel perfect images, it just wasn’t working- and when I chopped up my images into multiple power of 2 images it worked.

10

“Work” as in “no error, no crash”, yes, but the resulting image is blurry. That’s why it, in fact, doesn’t work.

11

Must have enabled non-texture of 2 at some point, sorry about that