I've rebased the patch and fixed up some build failures. If you want to play with it, here is the updated branch: http://cgit.freedesktop.org/~ab/mesa/log/?h=hw_gl_select2 <http://cgit.freedesktop.org/%7Eab/mesa/log/?h=hw_gl_select2>
I have a test where I draw 3 overlapped triangles in the XY plane with varying Z depths, and the SW code correctly returns 3 hits while the HW code only sees the first triangle that was drawn. The depth values returned were also 256 instead of the actual Z depth of the triangle as a GLuint. Tests were done with the softpipe swrast compiled into an OSMesa driver. The same driver works correctly when the MESA_HW_SELECT environment variable is not set. Not sure exactly what I am doing wrong, but I can not seem to get correct results with the hw_gl_select2 branch. Jerry.
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