[waffle] [PATCH] glx: Query proper extension string for ARB_create_context etc.

[Chad Versace]

Thanks. Pushed to master and 1.2.

On 06/03/2013 10:55 AM, Paul Berry wrote:
> Previously we were using glXQueryExtensionsString() to see whether the
> implementation supported ARB_create_context,
> ARB_create_context_profile, and EXT_create_context_es_profile.  This
> is the wrong query--those extensions show up in the *client* extension
> string, so we need to use glXGetClientString().
>
> This allows us to create core contexts using GLX.
> ---
>   src/waffle/glx/glx_display.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/src/waffle/glx/glx_display.c b/src/waffle/glx/glx_display.c
> index a29fb3c..15c52ae 100644
> --- a/src/waffle/glx/glx_display.c
> +++ b/src/waffle/glx/glx_display.c
> @@ -51,8 +51,7 @@ static bool
>   glx_display_set_extensions(struct glx_display *self)
>   {
>
> -    const char *s = glXQueryExtensionsString(self->x11.xlib,
> -                                             self->x11.screen);
> +    const char *s = glXGetClientString(self->x11.xlib, GLX_EXTENSIONS);
>       if (!s) {
>           wcore_errorf(WAFFLE_ERROR_UNKNOWN,
>                        "glXQueryExtensionsString failed");
>