I didn't use gluProject(), I just rendered the selectable objects in select and projection modes and set a pick matrix of four by four pixels around the cursor, setting a new unique ID for each object. After that, if you call glRenderMode() with GL_RENDER, you get back an array of selected ids.

It's pretty straightforward in the red book.

In reply to Re^3: Perl and OpenGL object selection by chromatic
in thread Perl and OpenGL object selection by szgezu

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