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 #define I915_MAX_TEXTURE_2D_LEVELS 11  /* max 1024x1024 */
  49 #define I915_MAX_TEXTURE_3D_LEVELS  8  /* max 128x128x128 */
  50
  51
  52 struct offset_pair {
  53         unsigned short nblocksx;
  54         unsigned short nblocksy;
  55 };
  56
  57 struct i915_texture {
  58    struct u_resource b;
  59
  60    /* tiling flags */
  61    enum i915_winsys_buffer_tile tiling;
  62    unsigned stride;
  63    unsigned depth_stride;          /* per-image on i945? */
  64    unsigned total_nblocksy;
  65
  66    unsigned nr_images[I915_MAX_TEXTURE_2D_LEVELS];
  67
  68    /* Explicitly store the offset of each image for each cube face or
  69     * depth value.
  70     *
  71     * Array [depth] off offsets.
  72     */
  73    struct offset_pair *image_offset[I915_MAX_TEXTURE_2D_LEVELS];
  74
  75    /* The data is held here:
  76     */
  77    struct i915_winsys_buffer *buffer;
  78 };
  79
  80 unsigned i915_texture_offset(struct i915_texture *tex,
  81                              unsigned level, unsigned face);
  82 void i915_init_screen_resource_functions(struct i915_screen *is);
  83 void i915_init_resource_functions(struct i915_context *i915);
  84
  85 extern struct u_resource_vtbl i915_buffer_vtbl;
  86 extern struct u_resource_vtbl i915_texture_vtbl;
  87
  88 static INLINE struct i915_texture *i915_texture(struct pipe_resource *resource)
  89 {
  90    struct i915_texture *tex = (struct i915_texture *)resource;
  91    assert(tex->b.vtbl == &i915_texture_vtbl);
  92    return tex;
  93 }
  94
  95 static INLINE struct i915_buffer *i915_buffer(struct pipe_resource *resource)
  96 {
  97    struct i915_buffer *tex = (struct i915_buffer *)resource;
  98    assert(tex->b.vtbl == &i915_buffer_vtbl);
  99    return tex;
 100 }
 101
 102 struct pipe_resource *
 103 i915_texture_create(struct pipe_screen *screen,
 104                     const struct pipe_resource *template);
 105
 106 struct pipe_resource *
 107 i915_texture_from_handle(struct pipe_screen * screen,
 108                          const struct pipe_resource *template,
 109                          struct winsys_handle *whandle);
 110
 111
 112 struct pipe_resource *
 113 i915_user_buffer_create(struct pipe_screen *screen,
 114                         void *ptr,
 115                         unsigned bytes,
 116                         unsigned usage);
 117
 118 struct pipe_resource *
 119 i915_buffer_create(struct pipe_screen *screen,
 120                    const struct pipe_resource *template);
 121
 122 #endif /* I915_RESOURCE_H */