---- Reported by personwholives 2008-01-31 14:00:10 ---- I have an app where I am trying to render an image to a pbuffer, then save that image to file. I call gl.glClearColor(0, 0, 0, 0) to make a black, transparent background. After this, I render a few shapes and try to read the rendered image back with gl.glReadPixels(0, 0, w, h, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, b). However, the read back result suffers from a complete lack of transparency. Even those places which I would expect to be transparent because nothing was drawn there. Every pixel in the populated data buffer has an alpha of 0xFF. This does not seem like correct behavior. My system is a newer workstation class machine with an nVidia Quadro FX graphics card, running windows XP. Test done with JSR 231 1.1.0 on java 1.6 JDK, run from within eclipse. If any of that info is helpful. ---- Additional Comments From personwholives 2008-02-01 07:44:46 ---- Ok, I'm stupid. Please ignore/close this issue. One of these days I'll check everything before leaping to the "it must be broken" conclusion. ---- Additional Comments From kbr 2008-02-01 09:50:06 ---- Closed as per submitter's comments. --- Bug imported by sgothel@jausoft.com 2010-03-24 07:51 EDT --- This bug was previously known as _bug_ 340 at https://jogl.dev.java.net/bugs/show_bug.cgi?id=340