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
31struct i915_screen;
32
33#include "util/u_transfer.h"
34#include "util/u_debug.h"
35#include "i915_winsys.h"
36
37
38struct i915_context;
39struct i915_screen;
40
41
42struct i915_buffer {
43   struct u_resource b;
44   uint8_t *data;
45   boolean free_on_destroy;
46};
47
48
49/* Texture transfer. */
50struct 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
61struct offset_pair {
62	unsigned short nblocksx;
63	unsigned short nblocksy;
64};
65
66struct 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
89unsigned i915_texture_offset(struct i915_texture *tex,
90                             unsigned level, unsigned layer);
91void i915_init_screen_resource_functions(struct i915_screen *is);
92void i915_init_resource_functions(struct i915_context *i915);
93
94extern struct u_resource_vtbl i915_buffer_vtbl;
95extern struct u_resource_vtbl i915_texture_vtbl;
96
97static 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
104static 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
111struct pipe_resource *
112i915_texture_create(struct pipe_screen *screen,
113                    const struct pipe_resource *template,
114                    boolean force_untiled);
115
116struct pipe_resource *
117i915_texture_from_handle(struct pipe_screen * screen,
118			 const struct pipe_resource *template,
119			 struct winsys_handle *whandle);
120
121
122struct pipe_resource *
123i915_user_buffer_create(struct pipe_screen *screen,
124                        void *ptr,
125                        unsigned bytes,
126			unsigned usage);
127
128struct pipe_resource *
129i915_buffer_create(struct pipe_screen *screen,
130		   const struct pipe_resource *template);
131
132#endif /* I915_RESOURCE_H */
133