workbench/libs/mesa/src/gallium/drivers/i915/i915_resource.h

   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 */