Re: [Dri-devel] Failure of GLXMakeCurrent with 2 contexts

[Harry O. <ho...@de...>]

----- Original Message -----
From: "Brian Paul" <br...@pr...>
To: "Harry Overs" <ho...@de...>
Cc: <dri...@ma...>
Sent: Monday, January 17, 2000 4:08 PM
Subject: Re: [Dri-devel] Failure of GLXMakeCurrent with 2 contexts


> Harry Overs wrote:
> >
> > ----- Original Message -----
> > From: "Brian Paul" <br...@pr...>
> > To: "Harry Overs" <ho...@de...>
> > Cc: "DRI-devel" <dri...@ma...>
> > Sent: Monday, January 17, 2000 3:48 PM
> > Subject: Re: [Dri-devel] Failure of GLXMakeCurrent with 2 contexts
> >
> > > Harry Overs wrote:
> > > >
> > > > Test code works fine with Mesa 3.1 s/w (no acceleration).
> > > > But with DRI, I get an X Error on GLXMakeCurrent. The problem seems
to
> > occur
> > > > with any code that has more than one context (i.e. two
GLwDrawingArea
> > > > widgets).
> > > > We have hacked glxdemo.c to show the problem.
> > > >
> > > > Using:
> > > > tdfx_dri-3.9.16-5.i386.rpm
> > > > tdfx_drm-0.8-3.src.rpm
> > > > xf86config.tar.gz
> > > > Glide_V3-DRI-3.10-4.i386.rpm
> > > > tdfx_dri_devel-3.9.16-5.i386.rpm
> > > >
> > > > Any help appreciated,
> > >
> > > I haven't tried your test yet but was wondering, are you using
indirect
> > > contexts?  If so, there was a bug which caused a segfault when using
> > > more than one indirect context.  I checked in the fix last week.
> > >
> > > -Brian
> > >
> >
> > Sorry if this is a stupid question - but what's an indirect context?
> > There is no segfault, rather an X Error. The X Server doesn't crash.
> > It doesn't sound like the same thing.
>
> An indirect context generates an X protocol message from each GL
> call, sends it over the wire/socket to your X server where it's
> decoded and send to the renderer.
>
> The bug I fixed solved a client-side segfault.  The X server wasn't
> effected.
>
> Please set the MESA_INFO env var before you run your program and see
> what it prints.
>
> Try setting/unsetting DRI_ALWAYS_INDIRECT (env var) as well and see
> what happens.
>

Set DRI_ALWAYS_INDIRECT and MESA_INFO and got:

GenuineIntel cpu detected.
MMX cpu detected.
Mesa GL_VERSION = 1.2 Mesa 3.1
Mesa GL_RENDERER = Mesa Glide - DRI VB/V3
Mesa GL_VENDOR = Brian Paul
Mesa GL_EXTENSIONS = GL_EXT_blend_color GL_EXT_blend_minmax
GL_EXT_blend_logic_op GL_EXT_blend_subtract GL_EXT_paletted_texture
GL_EXT_point_parameters GL_EXT_polygon_offset GL_EXT_vertex_array
GL_EXT_texture_object GL_EXT_texture3D GL_MESA_window_pos
GL_MESA_resize_buffers GL_EXT_shared_texture_palette GL_EXT_rescale_normal
GL_EXT_abgr GL_SGIS_texture_edge_clamp GL_EXT_stencil_wrap
GL_INGR_blend_func_separate GL_ARB_multitexture GL_NV_texgen_reflection
GL_PGI_misc_hints GL_EXT_compiled_vertex_array GL_EXT_clip_volume_hint
3DFX_set_global_palette GL_FXMESA_global_texture_lod_bias
GL_EXT_texture_env_add
Resize event
Redraw event
X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  145 (GLX)
  Minor opcode of failed request:  5 (X_GLXMakeCurrent)
  Serial number of failed request:  28
  Current serial number in output stream:  28

The same error as before.

Regards.

> -Brian
>
> _______________________________________________
> Dri-devel mailing list
> Dri...@li...
> http://lists.sourceforge.net/mailman/listinfo/dri-devel