[Bug 269006] graphics/mesa-dri enable i915(i915g)

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 20 Jun 2023 22:37:01 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=269006

--- Comment #9 from sasamotikomi@gmail.com ---
(In reply to sasamotikomi from comment #7)

Seem like it's indeed couple of incorrect options in make.conf on my side.

Currently i945g work fine with GMA950(and GMA3150 of course):

 % glxinfo | grep render 
direct rendering: Yes
    GLX_MESA_copy_sub_buffer, GLX_MESA_query_renderer, GLX_MESA_swap_control, 
    GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, GLX_MESA_query_renderer, 
Extended renderer info (GLX_MESA_query_renderer):
OpenGL renderer string: i915 (chipset: 945G)
    GL_OES_fbo_render_mipmap, GL_OES_get_program_binary, GL_OES_mapbuffer

Issue I encounter actually is VT<->X11 switch disable GPU acceleration (aka
llvmpipe fallback): 
https://github.com/freebsd/drm-kmod/issues/175g

So only real issue I'm encounter is WebGL1 broken in browsers Librewolf and
Firefox, and Firefox specifically do not display anything in about:support,
however es2gears_x11 work on both iGPU and glxinfo show OpenGL ES 2.0 support.
Second is Libva don't just give you unsupported status:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=272109

There's no serious issues with i915g outside of lack of some feature (like
WebGL1).
So it's ready for commit.

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