**************************************************************************/
/**
+ * @file
+ *
* Screen, Adapter or GPU
*
* These are driver functions/facilities that are context independent.
/**
* Check if the given pipe_format is supported as a texture or
* drawing surface.
- * \param type one of PIPE_TEXTURE, PIPE_SURFACE
+ * \param tex_usage bitmask of PIPE_TEXTURE_USAGE_*
+ * \param flags bitmask of PIPE_TEXTURE_GEOM_*
*/
boolean (*is_format_supported)( struct pipe_screen *,
- enum pipe_format format,
- uint type );
+ enum pipe_format format,
+ enum pipe_texture_target target,
+ unsigned tex_usage,
+ unsigned geom_flags );
/**
* Create a new texture object, using the given template info.
struct pipe_texture * (*texture_create)(struct pipe_screen *,
const struct pipe_texture *templat);
+ /**
+ * Create a new texture object, using the given template info, but on top of
+ * existing memory.
+ *
+ * It is assumed that the buffer data is layed out according to the expected
+ * by the hardware. NULL will be returned if any inconsistency is found.
+ */
+ struct pipe_texture * (*texture_blanket)(struct pipe_screen *,
+ const struct pipe_texture *templat,
+ const unsigned *pitch,
+ struct pipe_buffer *buffer);
+
void (*texture_release)(struct pipe_screen *,
struct pipe_texture **pt);
struct pipe_surface *(*get_tex_surface)(struct pipe_screen *,
struct pipe_texture *texture,
unsigned face, unsigned level,
- unsigned zslice);
+ unsigned zslice,
+ unsigned usage );
+
+ /* Surfaces allocated by the above must be released here:
+ */
+ void (*tex_surface_release)( struct pipe_screen *,
+ struct pipe_surface ** );
+
+
+ void *(*surface_map)( struct pipe_screen *,
+ struct pipe_surface *surface,
+ unsigned flags );
+
+ void (*surface_unmap)( struct pipe_screen *,
+ struct pipe_surface *surface );
+
};