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      1 /**************************************************************************
      2  *
      3  * Copyright 2005 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 INTEL_BUFFEROBJ_H
     29 #define INTEL_BUFFEROBJ_H
     30 
     31 #include "main/mtypes.h"
     32 
     33 struct intel_context;
     34 struct gl_buffer_object;
     35 
     36 
     37 /**
     38  * Intel vertex/pixel buffer object, derived from Mesa's gl_buffer_object.
     39  */
     40 struct intel_buffer_object
     41 {
     42    struct gl_buffer_object Base;
     43    drm_intel_bo *buffer;     /* the low-level buffer manager's buffer handle */
     44    GLuint offset;            /* any offset into that buffer */
     45 
     46    /** System memory buffer data, if not using a BO to store the data. */
     47    void *sys_buffer;
     48 
     49    drm_intel_bo *range_map_bo;
     50    void *range_map_buffer;
     51    unsigned int range_map_offset;
     52    GLsizei range_map_size;
     53 
     54    bool source;
     55 };
     56 
     57 
     58 /* Get the bm buffer associated with a GL bufferobject:
     59  */
     60 drm_intel_bo *intel_bufferobj_buffer(struct intel_context *intel,
     61 				     struct intel_buffer_object *obj,
     62 				     GLuint flag);
     63 drm_intel_bo *intel_bufferobj_source(struct intel_context *intel,
     64 				     struct intel_buffer_object *obj,
     65 				     GLuint align,
     66 				     GLuint *offset);
     67 
     68 void intel_upload_data(struct intel_context *intel,
     69 		       const void *ptr, GLuint size, GLuint align,
     70 		       drm_intel_bo **return_bo,
     71 		       GLuint *return_offset);
     72 
     73 void *intel_upload_map(struct intel_context *intel,
     74 		       GLuint size, GLuint align);
     75 void intel_upload_unmap(struct intel_context *intel,
     76 			const void *ptr, GLuint size, GLuint align,
     77 			drm_intel_bo **return_bo,
     78 			GLuint *return_offset);
     79 
     80 void intel_upload_finish(struct intel_context *intel);
     81 
     82 /* Hook the bufferobject implementation into mesa:
     83  */
     84 void intelInitBufferObjectFuncs(struct dd_function_table *functions);
     85 
     86 static inline struct intel_buffer_object *
     87 intel_buffer_object(struct gl_buffer_object *obj)
     88 {
     89    return (struct intel_buffer_object *) obj;
     90 }
     91 
     92 #endif
     93