+ float (*get_paramf)( struct pipe_screen *, enum pipe_capf param );
+
+ /**
+ * Query a per-shader-stage integer-valued capability/parameter/limit
+ * \param param one of PIPE_CAP_x
+ */
+ int (*get_shader_param)( struct pipe_screen *, unsigned shader, enum pipe_shader_cap param );
+
+ /**
+ * Query an integer-valued capability/parameter/limit for a codec/profile
+ * \param param one of PIPE_VIDEO_CAP_x
+ */
+ int (*get_video_param)( struct pipe_screen *,
+ enum pipe_video_profile profile,
+ enum pipe_video_entrypoint entrypoint,
+ enum pipe_video_cap param );
+
+ /**
+ * Query a compute-specific capability/parameter/limit.
+ * \param param one of PIPE_COMPUTE_CAP_x
+ * \param ret pointer to a preallocated buffer that will be
+ * initialized to the parameter value, or NULL.
+ * \return size in bytes of the parameter value that would be
+ * returned.
+ */
+ int (*get_compute_param)(struct pipe_screen *,
+ enum pipe_compute_cap param,
+ void *ret);
+
+ /**
+ * Query a timestamp in nanoseconds. The returned value should match
+ * PIPE_QUERY_TIMESTAMP. This function returns immediately and doesn't
+ * wait for rendering to complete (which cannot be achieved with queries).
+ */
+ uint64_t (*get_timestamp)(struct pipe_screen *);
+
+ /**
+ * Create a context.
+ *
+ * \param screen pipe screen
+ * \param priv a pointer to set in pipe_context::priv
+ * \param flags a mask of PIPE_CONTEXT_* flags
+ */
+ struct pipe_context * (*context_create)(struct pipe_screen *screen,
+ void *priv, unsigned flags);