specs: Remove GLX_RENDERER_ID_MESA from GLX_MESA_query_renderer

This has not even had an attempt at implementation. If you asked for
renderer 0 - which, the spec implies, should always work - then
dri2_convert_glx_attribs would fail, we'd silently fall back to creating
an indirect context, and xserver would also not recognize the attribute
and would throw BadValue at you.

The API would be difficult to use in any case, since there's no way to
enumerate how many renderers the screen has. I'd be tempted to add that
by defining:

    glXQueryRendererIntegerMESA(dpy, screen,
                                /* renderer = */ -1,
                                0, &value);

to return the number of renderers, but a new entrypoint might be
cleaner. Still, better to not specify it at all than to lie about it.

Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>

diff --git a/docs/specs/MESA_query_renderer.spec b/docs/specs/MESA_query_renderer.spec
index 3b4a445cf8891757622f1c76cfb02d17f78f7de0..0209efa1148ed204bedddb2cbb05df38b3d2ef97 100644 (file)
--- a/docs/specs/MESA_query_renderer.spec
+++ b/docs/specs/MESA_query_renderer.spec
@@ -92,11 +92,6 @@ New Tokens
         GLX_RENDERER_VENDOR_ID_MESA
         GLX_RENDERER_DEVICE_ID_MESA
 
-    Accepted as an attribute name in <*attrib_list> in
-    glXCreateContextAttribsARB:
-
-        GLX_RENDERER_ID_MESA                             0x818E
-
 Additions to the OpenGL / WGL Specifications
 
     None. This specification is written for GLX.
@@ -203,20 +198,6 @@ Additions to the GLX 1.4 Specification
     format as the string that would be returned by glGetString of GL_RENDERER.
     It may, however, have a different value.
 
-
-    [Add to section section 3.3.7 "Rendering Contexts"]
-
-    The attribute name GLX_RENDERER_ID_MESA specified the index of the render
-    against which the context should be created.  The default value of
-    GLX_RENDERER_ID_MESA is 0.
-
-
-    [Add to list of errors for glXCreateContextAttribsARB in section section
-    3.3.7 "Rendering Contexts"]
-
-      * If the value of GLX_RENDERER_ID_MESA specifies a non-existent
-        renderer, BadMatch is generated.
-
 Issues
 
     1) How should the difference between on-card and GART memory be exposed?