I use the accumulation buffer to provide antialiasing. When the background is black (glClearColor(0,0,0,0) and glClearAccum(0,0,0,0)), it’s ok but when it’s white the antialiased image is black with some colors : it isn’t what i’m expected.
I’m working on Octane Silicon Graphics with IRIX 6.5 and a four years old version of OpenGL.
Can you help me. Thank you