1/**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
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 VMWARE 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 SP_TEXTURE_H
29#define SP_TEXTURE_H
30
31
32#include "pipe/p_state.h"
33#include "sp_limits.h"
34
35
36struct pipe_context;
37struct pipe_screen;
38struct softpipe_context;
39
40
41/**
42 * Subclass of pipe_resource.
43 */
44struct softpipe_resource
45{
46   struct pipe_resource base;
47
48   unsigned long level_offset[SP_MAX_TEXTURE_2D_LEVELS];
49   unsigned stride[SP_MAX_TEXTURE_2D_LEVELS];
50   unsigned img_stride[SP_MAX_TEXTURE_2D_LEVELS];
51
52   /**
53    * Display target, only valid for PIPE_TEXTURE_2D with the
54    * PIPE_BIND_DISPLAY_TARGET usage.
55    */
56   struct sw_displaytarget *dt;
57
58   /**
59    * Malloc'ed data for regular buffers and textures, or a mapping to dt above.
60    */
61   void *data;
62
63   /* True if texture images are power-of-two in all dimensions:
64    */
65   boolean pot;
66   boolean userBuffer;
67
68   unsigned timestamp;
69};
70
71
72/**
73 * Subclass of pipe_transfer.
74 */
75struct softpipe_transfer
76{
77   struct pipe_transfer base;
78
79   unsigned long offset;
80};
81
82
83/** cast wrappers */
84static inline struct softpipe_resource *
85softpipe_resource(struct pipe_resource *pt)
86{
87   return (struct softpipe_resource *) pt;
88}
89
90static inline struct softpipe_transfer *
91softpipe_transfer(struct pipe_transfer *pt)
92{
93   return (struct softpipe_transfer *) pt;
94}
95
96
97/**
98 * Return pointer to a resource's actual data.
99 * This is a short-cut instead of using map()/unmap(), which should
100 * probably be fixed.
101 */
102static inline void *
103softpipe_resource_data(struct pipe_resource *pt)
104{
105   if (!pt)
106      return NULL;
107
108   assert(softpipe_resource(pt)->dt == NULL);
109   return softpipe_resource(pt)->data;
110}
111
112
113extern void
114softpipe_init_screen_texture_funcs(struct pipe_screen *screen);
115
116extern void
117softpipe_init_texture_funcs(struct pipe_context *pipe);
118
119unsigned
120softpipe_get_tex_image_offset(const struct softpipe_resource *spr,
121                              unsigned level, unsigned layer);
122#endif /* SP_TEXTURE */
123