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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
  4.  * All Rights Reserved.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the
  8.  * "Software"), to deal in the Software without restriction, including
  9.  * without limitation the rights to use, copy, modify, merge, publish,
  10.  * distribute, sub license, and/or sell copies of the Software, and to
  11.  * permit persons to whom the Software is furnished to do so, subject to
  12.  * the following conditions:
  13.  *
  14.  * The above copyright notice and this permission notice (including the
  15.  * next paragraph) shall be included in all copies or substantial portions
  16.  * of the Software.
  17.  *
  18.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21.  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25.  *
  26.  **************************************************************************/
  27.  
  28. #ifndef I915_RESOURCE_H
  29. #define I915_RESOURCE_H
  30.  
  31. struct i915_screen;
  32.  
  33. #include "util/u_transfer.h"
  34. #include "util/u_debug.h"
  35. #include "i915_winsys.h"
  36.  
  37.  
  38. struct i915_context;
  39. struct i915_screen;
  40.  
  41.  
  42. struct i915_buffer {
  43.    struct u_resource b;
  44.    uint8_t *data;
  45.    boolean free_on_destroy;
  46. };
  47.  
  48.  
  49. /* Texture transfer. */
  50. struct i915_transfer {
  51.    /* Base class. */
  52.    struct pipe_transfer b;
  53.    struct pipe_resource *staging_texture;
  54. };
  55.  
  56.  
  57. #define I915_MAX_TEXTURE_2D_LEVELS 12  /* max 2048x2048 */
  58. #define I915_MAX_TEXTURE_3D_LEVELS  9  /* max 256x256x256 */
  59.  
  60.  
  61. struct offset_pair {
  62.         unsigned short nblocksx;
  63.         unsigned short nblocksy;
  64. };
  65.  
  66. struct i915_texture {
  67.    struct u_resource b;
  68.  
  69.    /* tiling flags */
  70.    enum i915_winsys_buffer_tile tiling;
  71.    unsigned stride;
  72.    unsigned depth_stride;          /* per-image on i945? */
  73.    unsigned total_nblocksy;
  74.  
  75.    unsigned nr_images[I915_MAX_TEXTURE_2D_LEVELS];
  76.  
  77.    /* Explicitly store the offset of each image for each cube face or
  78.     * depth value.
  79.     *
  80.     * Array [depth] off offsets.
  81.     */
  82.    struct offset_pair *image_offset[I915_MAX_TEXTURE_2D_LEVELS];
  83.  
  84.    /* The data is held here:
  85.     */
  86.    struct i915_winsys_buffer *buffer;
  87. };
  88.  
  89. unsigned i915_texture_offset(struct i915_texture *tex,
  90.                              unsigned level, unsigned layer);
  91. void i915_init_screen_resource_functions(struct i915_screen *is);
  92. void i915_init_resource_functions(struct i915_context *i915);
  93.  
  94. extern struct u_resource_vtbl i915_buffer_vtbl;
  95. extern struct u_resource_vtbl i915_texture_vtbl;
  96.  
  97. static INLINE struct i915_texture *i915_texture(struct pipe_resource *resource)
  98. {
  99.    struct i915_texture *tex = (struct i915_texture *)resource;
  100.    assert(tex->b.vtbl == &i915_texture_vtbl);
  101.    return tex;
  102. }
  103.  
  104. static INLINE struct i915_buffer *i915_buffer(struct pipe_resource *resource)
  105. {
  106.    struct i915_buffer *tex = (struct i915_buffer *)resource;
  107.    assert(tex->b.vtbl == &i915_buffer_vtbl);
  108.    return tex;
  109. }
  110.  
  111. struct pipe_resource *
  112. i915_texture_create(struct pipe_screen *screen,
  113.                     const struct pipe_resource *template,
  114.                     boolean force_untiled);
  115.  
  116. struct pipe_resource *
  117. i915_texture_from_handle(struct pipe_screen * screen,
  118.                          const struct pipe_resource *template,
  119.                          struct winsys_handle *whandle);
  120.  
  121.  
  122. struct pipe_resource *
  123. i915_user_buffer_create(struct pipe_screen *screen,
  124.                         void *ptr,
  125.                         unsigned bytes,
  126.                         unsigned usage);
  127.  
  128. struct pipe_resource *
  129. i915_buffer_create(struct pipe_screen *screen,
  130.                    const struct pipe_resource *template);
  131.  
  132. #endif /* I915_RESOURCE_H */
  133.