Saving screenshot not working right with fog swithced on

Troubleshooting graphics
1

Hi

I’m using the code below to render my output to png files, but when I use fog I get a semi transparent image, where it looks like the depth channel is being used for alpha…



[java]renderer.readFrameBuffer(viewPort.getOutputFrameBuffer(), outBuf);

Screenshots.convertScreenShot(outBuf, awtImage);[/java]



any ideas around this?

2

actually - just to clarify things

the above code simply outputs the image without any fog effect - but the scene is normal



it’s when I tried to render the scene into a separate framebuffer, then output that, that I get the transparency problem.

3

I took a look at the fog filter and its not really possible to get a transparent result unless your fog color is transparent as well. Make sure it has 1.0 for alpha.

1 Like
4
Momoko_Fan said:
Make sure it has 1.0 for alpha.


that was indeed the problem - though tricky to spot, as the screen output looks unaffected by fog alpha..

thanks :)