When I decode video frames with FFmpeg (avcodec_decode_video2(), sws_scale()), with some videos (e.g., ProRes4444), I get colors pre-multiplied by alpha, and with other videos (e.g., QuickTime PNG)...

I would like to write a basic hardware-accelerated window manager, so I've been looking for some documentation on how to get started, but I've only managed to find this tutorial, which uses an outd...

I'm trying to print html to pdf using headless chromium (using puppeteer) and everything works fine except if html contains large png images (over 10.000x10.000px) the whole process of rendering pa...

I’m using CISourceOverCompositing to overlay text on top of an image and I’m getting unexpected results when the text image is not fully opaque. Dark colors are not dark enough and light colors are...

I have two BufferedImages I loaded in from pngs. The first contains an image, the second an alpha mask for the image. I want to create a combined image from the two, by applying the alpha mask. My...

I’m working on an app that creates images whose hue, saturation, and value change according to different parameters. For performance reasons, it would make sense to render the hue, saturation, and ...

From the original question (below), I am now offering a bounty for the following: An AlphaComposite based solution for rounded corners. Please demonstrate with a JPanel. Corners must be complet...