[Mesa-dev] [PATCH] st/mesa: allow forward-compatible contexts and set Const.ContextFlags

[Brian Paul]

On 11/28/2012 12:42 PM, Marek Olšák wrote:
> ---
>   src/gallium/include/state_tracker/st_api.h |    3 +--
>   src/mesa/state_tracker/st_manager.c        |   12 +++++++-----
>   2 files changed, 8 insertions(+), 7 deletions(-)
>
> diff --git a/src/gallium/include/state_tracker/st_api.h b/src/gallium/include/state_tracker/st_api.h
> index 3a11cd4..85de1c2 100644
> --- a/src/gallium/include/state_tracker/st_api.h
> +++ b/src/gallium/include/state_tracker/st_api.h
> @@ -250,8 +250,7 @@ struct st_context_attribs
>       * The profile and minimal version to support.
>       *
>       * The valid profiles and versions are rendering API dependent.  The latest
> -    * version satisfying the request should be returned, unless the
> -    * ST_CONTEXT_FLAG_FORWARD_COMPATIBLE bit is set.
> +    * version satisfying the request should be returned.
>       */
>      enum st_profile_type profile;
>      int major, minor;
> diff --git a/src/mesa/state_tracker/st_manager.c b/src/mesa/state_tracker/st_manager.c
> index 999e916..5576a0d 100644
> --- a/src/mesa/state_tracker/st_manager.c
> +++ b/src/mesa/state_tracker/st_manager.c
> @@ -646,16 +646,18 @@ st_api_create_context(struct st_api *stapi, struct st_manager *smapi,
>         return NULL;
>      }
>
> +   if (attribs->flags&  ST_CONTEXT_FLAG_DEBUG)
> +      st->ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_DEBUG_BIT;
> +   if (attribs->flags&  ST_CONTEXT_FLAG_FORWARD_COMPATIBLE)
> +      st->ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT;
> +
>      /* need to perform version check */
>      if (attribs->major>  1 || attribs->minor>  0) {
>         _mesa_compute_version(st->ctx);
>
> -      /* Is the actual version less than the requested version?  Mesa can't
> -       * yet enforce the added restrictions of a forward-looking context, so
> -       * fail that too.
> +      /* Is the actual version less than the requested version?
>          */
> -      if (st->ctx->Version<  attribs->major * 10 + attribs->minor
> -	  || (attribs->flags&  ~ST_CONTEXT_FLAG_DEBUG) != 0) {
> +      if (st->ctx->Version<  attribs->major * 10 + attribs->minor) {
>   	 *error = ST_CONTEXT_ERROR_BAD_VERSION;
>            st_destroy_context(st);
>            return NULL;

Reviewed-by: Brian Paul <brianp at vmware.com>