[Mesa-dev] [Bug 89586] Drivers/DRI/swrast

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89586

--- Comment #23 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to Dan Sebald from comment #22)
> glxinfo indicates GLX Version 1.4.

Not really relevant... I was looking for the version of X to determine the
general age of the system, as well as what libglx shipped with it.

> 
> I did find some tests that work without the GLX_ARB_create_context error. 
> There seems to be no correlation with 1.0, 2.0, etc.  For example, this one
> works:
> 
> [sebald@ piglit]$ LD_LIBRARY_PATH=/home/sebald/local/lib:/usr/local/lib64
> bin/gl-2.1-pbo 
> libGL error: unable to load driver: nouveau_dri.so
> libGL error: driver pointer missing
> libGL error: failed to load driver: nouveau
> PIGLIT: {"subtest": {"test_sanity" : "pass"}}
> PIGLIT: {"subtest": {"test_draw_pixels" : "pass"}}
> PIGLIT: {"subtest": {"test_pixel_map" : "pass"}}
> PIGLIT: {"subtest": {"test_bitmap" : "pass"}}
> PIGLIT: {"subtest": {"test_tex_image" : "pass"}}
> PIGLIT: {"subtest": {"test_tex_sub_image" : "pass"}}
> PIGLIT: {"subtest": {"test_polygon_stip" : "pass"}}
> PIGLIT: {"subtest": {"test_error_handling" : "pass"}}
> 
> while most others don't.  The only thing that stands out is that in the C
> files for this test is a main() definition and in that definition there
> appears to be GLUT creating the context. 

Probably, yeah. piglit is old. The nice thing about waffle is that it works on
all platforms. Except, apparently, really old ones that don't have
GLX_ARB_create_context.

> The example
> ext_polygon_offset_clamp-draw has no main so I assume that is worked out via
> #include "piglit-util-gl.h" and Waffles.
> 
> But you'd want me to write a glPixelZoom test with the Waffles framework, so
> I've made the change you suggested to glx_config.c and the program proceeds,
> but for some reason this particular test is failing:
> 
> [sebald@ piglit]$ LD_LIBRARY_PATH=/home/sebald/local/lib:/usr/local/lib64
> bin/ext_polygon_offset_clamp-draw
> libGL error: unable to load driver: nouveau_dri.so
> libGL error: driver pointer missing
> libGL error: failed to load driver: nouveau
> Test requires GL_EXT_polygon_offset_clamp
> PIGLIT: {"result": "skip" }
> 
> However, I believe GL_EXT_polygon_offset_clamp is in the library:
> 
> [sebald@ waffle]$ grep GL_EXT_polygon_offset_clamp ~/local/lib/dri/*
> Binary file /home/sebald/local/lib/dri/kms_swrast_dri.so matches
> Binary file /home/sebald/local/lib/dri/r200_dri.so matches
> Binary file /home/sebald/local/lib/dri/radeon_dri.so matches
> Binary file /home/sebald/local/lib/dri/swrast_dri.so matches
> 
> Eh, at this point it's too much hacking to try and resolve anything.  I'll
> just put together some kind of test that is in the Waffle framework as best
> as possible and still compiles on my system, then let you or someone else
> refine the build aspects of it.

As I had mentioned earlier, swrast doesn't support the extension. You'll note
that glxinfo won't list it under OpenGL extensions. llvmpipe should support it
though. (As do all DX10-level GPUs supported by mesa.)

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/mesa-dev/attachments/20150320/d1c9138c/attachment.html>