On Tue, 2010-08-17 at 00:09 -0700, Luca Barbieri wrote: > -#define PIPE_BIND_STREAM_OUTPUT (1 << 11) /* > set_stream_output_buffers */ > + > +/* Sampler views can be created based on this texture. Only the > + * normalization preferred by the driver can be used, unless the > other > + * flags below are set as well. Only clamp wrap modes are allowed. */ > +#define PIPE_BIND_SAMPLER_VIEW_ANY (1 << 2) /* get_sampler_view > */
I don't see the need for this "any" flag -- if this is an internally generated texture, the state tracker can query the driver, find out what normalization it prefers, and then use that explicitly. > +/* State trackers must set this flag if they/the user API need to be > able to use > + * unnormalized coodinates with clamp, clamp-to-edge or > clamp-to-border wrap > + * mode with this resource when a sampler view based on it is bound. > + * > + * OpenCL and OpenGL TEXTURE_RECTANGLE textures will have this flag > set. > + */ > +#define PIPE_BIND_SAMPLER_VIEW_UNNORMALIZED_CLAMP ((1 << 2) | (1 << > 3)) > + > +/* State trackers must set this flag if they/the user API need to be > able to use > + * unnormalized coordinates with non-clamp wrap modes with this > resource > + * when a sampler view based on it is bound. > + * > + * OpenCL textures will have this flag set. > + */ > +#define PIPE_BIND_SAMPLER_VIEW_UNNORMALIZED_NON_CLAMP ((1 << 2) | (1 > << 4)) > + > +/* State trackers must set this flag if they/the user API need to be > able to use > + * normalized coordinates with any wrap mode with this resource > + * when a sampler view based on it is bound. > + * > + * OpenCL, OpenGL TEXTURE_2D and D3D11 textures will have this flag > set. > + */ > +#define PIPE_BIND_SAMPLER_VIEW_NORMALIZED ((1 << 2) | (1 << 5)) Is there a practical difference at the driver level between the two unnormalized versions? I know some hardware will support one and not the other, but that's something to be handled with queries. Once we get around to creating a texture, is it going to get layed out differently depending on whether it uses clamp vs wrap addressing? Keith _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
