I turned off depth testing and only have culling turned on. Rectangles for box sorted -z to +z. Blend Func = ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ): Does not fix the problem. Although the box looks anti-aliased
I kept the depth test off. Set the Blend Func = ( GL_SRC_ALPHA_SATURATE , GL_ONE ). The object would disappear.
I sorted +z to -z. the box would appear, but the front & top was culled.
I’m thinking that I have the concept of winding reversed: If I look at the side I want to see the points should be couter-clockwise? (I have FrontFace set to GL_CCW).
I changed the FrontFace to CW, but that made the object “disappear” again.
I turned off culling the half-box would appear (only the bottom & back viewable).
Thanks for all quick responces so far guys. I’m new to OpenGL, and I assume I’m doing something silly.