premature return in TexParameterf caused mesa to never call Driver.TexParameter
breaking drivers relying on this (fix bug #20966).
While here, also fix using ctx->ErrorValue when deciding to call
Driver.TexParameter. Errors are sticky and uncleared errors thus would cause
this to no longer get called. Since we thus need return value of
set_tex_parameter[if] can also optimize this to only call when value changed.
1) If MakeContextCurrent is called with (NULL, None, None), Don't
send the request to the X server if the current context is direct.
2) Return BadMatch in some error cases according to the glx spec.
3) If MakeContextCurrent is called for a context which is current in
another thread, return BadAccess according to the glx spec.
Signed-off-by: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
1) Don't error-check here. It's done in glx makeCurrent.
2) Allow ctx and the dri drawables to be NULL for future use. This is
currently blocked in glx makeCurrent.
3) Avoid updating dri drawables unless they are completely uninitialized.
Since the updating was done outside of the lock, the driver need to
verify and redo it anyway.
Signed-off-by: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
A shader program may consist of multiple shaders (source code units).
If we find there are unresolved functions after compiling the unit that
defines main(), we'll concatenate all the respective vertex or fragment
shaders then recompile.
This isn't foolproof but should work in most cases.
This fixes an issue when compiling glCallList() into another display list
when the mode is GL_COMPILE_AND_EXECUTE.
Before, the call to glCallList() called _mesa_save_CallList() which called
neutral_CallList() which then called _mesa_save_CallList() again. In the
end, the parent display list contained two calls to the child display list
instead of one.
Let's be on the lookout for regressions caused by this change for a while
before we cherry-pick this elsewhere.
"const" is the right keyword, but I can't do that without adding a bunch
of really annoying and ugly const casts everywhere, and frankly,
that's really stupid, so instead, just don't make them const.
