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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 
36 struct pipe_context;
37 struct pipe_screen;
38 struct softpipe_context;
39 
40 
41 /**
42  * Subclass of pipe_resource.
43  */
44 struct 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  */
75 struct softpipe_transfer
76 {
77    struct pipe_transfer base;
78 
79    unsigned long offset;
80 };
81 
82 
83 /** cast wrappers */
84 static inline struct softpipe_resource *
softpipe_resource(struct pipe_resource * pt)85 softpipe_resource(struct pipe_resource *pt)
86 {
87    return (struct softpipe_resource *) pt;
88 }
89 
90 static inline struct softpipe_transfer *
softpipe_transfer(struct pipe_transfer * pt)91 softpipe_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  */
102 static inline void *
softpipe_resource_data(struct pipe_resource * pt)103 softpipe_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 
113 extern void
114 softpipe_init_screen_texture_funcs(struct pipe_screen *screen);
115 
116 extern void
117 softpipe_init_texture_funcs(struct pipe_context *pipe);
118 
119 unsigned
120 softpipe_get_tex_image_offset(const struct softpipe_resource *spr,
121                               unsigned level, unsigned layer);
122 #endif /* SP_TEXTURE */
123