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/**************************************************************************
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 *
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 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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 * All Rights Reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the
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 * "Software"), to deal in the Software without restriction, including
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 * without limitation the rights to use, copy, modify, merge, publish,
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 * distribute, sub license, and/or sell copies of the Software, and to
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 * permit persons to whom the Software is furnished to do so, subject to
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 * the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the
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 * next paragraph) shall be included in all copies or substantial portions
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 * of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 *
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 **************************************************************************/
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#ifndef I915_RESOURCE_H
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#define I915_RESOURCE_H
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struct i915_screen;
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#include "util/u_transfer.h"
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#include "util/u_debug.h"
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#include "i915_winsys.h"
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struct i915_context;
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struct i915_screen;
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struct i915_buffer {
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   struct u_resource b;
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   uint8_t *data;
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   boolean free_on_destroy;
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};
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/* Texture transfer. */
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struct i915_transfer {
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   /* Base class. */
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   struct pipe_transfer b;
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   struct pipe_resource *staging_texture;
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};
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#define I915_MAX_TEXTURE_2D_LEVELS 12  /* max 2048x2048 */
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#define I915_MAX_TEXTURE_3D_LEVELS  9  /* max 256x256x256 */
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struct offset_pair {
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	unsigned short nblocksx;
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	unsigned short nblocksy;
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};
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struct i915_texture {
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   struct u_resource b;
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   /* tiling flags */
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   enum i915_winsys_buffer_tile tiling;
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   unsigned stride;
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   unsigned depth_stride;          /* per-image on i945? */
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   unsigned total_nblocksy;
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   unsigned nr_images[I915_MAX_TEXTURE_2D_LEVELS];
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   /* Explicitly store the offset of each image for each cube face or
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    * depth value.
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    *
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    * Array [depth] off offsets.
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    */
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   struct offset_pair *image_offset[I915_MAX_TEXTURE_2D_LEVELS];
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   /* The data is held here:
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    */
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   struct i915_winsys_buffer *buffer;
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};
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unsigned i915_texture_offset(struct i915_texture *tex,
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                             unsigned level, unsigned layer);
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void i915_init_screen_resource_functions(struct i915_screen *is);
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void i915_init_resource_functions(struct i915_context *i915);
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extern struct u_resource_vtbl i915_buffer_vtbl;
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extern struct u_resource_vtbl i915_texture_vtbl;
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static INLINE struct i915_texture *i915_texture(struct pipe_resource *resource)
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{
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   struct i915_texture *tex = (struct i915_texture *)resource;
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   assert(tex->b.vtbl == &i915_texture_vtbl);
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   return tex;
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}
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static INLINE struct i915_buffer *i915_buffer(struct pipe_resource *resource)
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{
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   struct i915_buffer *tex = (struct i915_buffer *)resource;
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   assert(tex->b.vtbl == &i915_buffer_vtbl);
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   return tex;
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}
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struct pipe_resource *
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i915_texture_create(struct pipe_screen *screen,
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                    const struct pipe_resource *template,
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                    boolean force_untiled);
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struct pipe_resource *
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i915_texture_from_handle(struct pipe_screen * screen,
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			 const struct pipe_resource *template,
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			 struct winsys_handle *whandle);
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struct pipe_resource *
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i915_user_buffer_create(struct pipe_screen *screen,
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                        void *ptr,
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                        unsigned bytes,
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			unsigned usage);
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struct pipe_resource *
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i915_buffer_create(struct pipe_screen *screen,
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		   const struct pipe_resource *template);
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#endif /* I915_RESOURCE_H */