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      1 /**************************************************************************
      2  *
      3  * Copyright 2005 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 ST_CB_BUFFEROBJECTS_H
     29 #define ST_CB_BUFFEROBJECTS_H
     30 
     31 #include "main/compiler.h"
     32 #include "main/mtypes.h"
     33 
     34 struct dd_function_table;
     35 struct pipe_resource;
     36 struct pipe_screen;
     37 struct st_context;
     38 
     39 /**
     40  * State_tracker vertex/pixel buffer object, derived from Mesa's
     41  * gl_buffer_object.
     42  */
     43 struct st_buffer_object
     44 {
     45    struct gl_buffer_object Base;
     46    struct pipe_resource *buffer;     /* GPU storage */
     47    struct pipe_transfer *transfer[MAP_COUNT];
     48 };
     49 
     50 
     51 /** cast wrapper */
     52 static inline struct st_buffer_object *
     53 st_buffer_object(struct gl_buffer_object *obj)
     54 {
     55    return (struct st_buffer_object *) obj;
     56 }
     57 
     58 
     59 extern void
     60 st_bufferobj_validate_usage(struct st_context *st,
     61 			    struct st_buffer_object *obj,
     62 			    unsigned usage);
     63 
     64 
     65 extern void
     66 st_init_bufferobject_functions(struct pipe_screen *screen,
     67                                struct dd_function_table *functions);
     68 
     69 
     70 #endif
     71