st_cb_bufferobjects.h

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00001 /**************************************************************************
00002  * 
00003  * Copyright 2005 Tungsten Graphics, Inc., Cedar Park, Texas.
00004  * All Rights Reserved.
00005  * 
00006  * Permission is hereby granted, free of charge, to any person obtaining a
00007  * copy of this software and associated documentation files (the
00008  * "Software"), to deal in the Software without restriction, including
00009  * without limitation the rights to use, copy, modify, merge, publish,
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00011  * permit persons to whom the Software is furnished to do so, subject to
00012  * the following conditions:
00013  * 
00014  * The above copyright notice and this permission notice (including the
00015  * next paragraph) shall be included in all copies or substantial portions
00016  * of the Software.
00017  * 
00018  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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00026  **************************************************************************/
00027 
00028 #ifndef ST_CB_BUFFEROBJECTS_H
00029 #define ST_CB_BUFFEROBJECTS_H
00030 
00031 struct st_context;
00032 struct gl_buffer_object;
00033 struct pipe_buffer;
00034 
00039 struct st_buffer_object
00040 {
00041    struct gl_buffer_object Base;
00042    struct pipe_buffer *buffer;  
00043    GLsizeiptrARB size;
00044 };
00045 
00046 
00047 /* Are the obj->Name tests necessary?  Unfortunately yes, mesa
00048  * allocates a couple of gl_buffer_object structs statically, and the
00049  * Name == 0 test is the only way to identify them and avoid casting
00050  * them erroneously to our structs.
00051  */
00052 static INLINE struct st_buffer_object *
00053 st_buffer_object(struct gl_buffer_object *obj)
00054 {
00055    if (obj->Name)
00056       return (struct st_buffer_object *) obj;
00057    else
00058       return NULL;
00059 }
00060 
00061 
00062 extern void
00063 st_init_bufferobject_functions(struct dd_function_table *functions);
00064 
00065 
00066 #endif

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