Ian Romanick wrote:
In any case, here is the patch as it currently stands. demos/occlude doesn't work right, but I'm working on it. I've also attached a patch to demos/shadowtex.c to change the way cycling compare mode works. It can now cycle with the SGIX version. I'll commit this later. I want to modify it further to select at run-time which extensions to use.
I've been trying to solve the HP_occlusion_test problem all morning. As near as I can tell, all of the right GLX protocol is happening, but the OCCLUSION_TEST_RESULT_HP is always false. The only thing I can think of is that the extension isn't enabled in Mesa. How does the Mesa that gets compiled in know which extensions to enable? Does it just use _mesa_enable_sw_extnesions?
Yes, I believe the server-side Mesa module just calls _mesa_enable_sw_extensions(). I haven't looked in a while.
I really don't know what's causing this problem.
One funny thing about GL_HP_occlusion_test is that the result flag gets cleared when glGetInteger/Bool/etc() is called. No other glGet*() query _sets_ GL state.
One of these days I'd like to implement the NVIDIA occlusion test extension.
-Brian
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