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/**************************************************************************
*
* Copyright 2005 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#ifndef INTEL_BUFFEROBJ_H
#define INTEL_BUFFEROBJ_H
#include "main/mtypes.h"
struct intel_context;
struct intel_region;
struct gl_buffer_object;
/**
* Intel vertex/pixel buffer object, derived from Mesa's gl_buffer_object.
*/
struct intel_buffer_object
{
struct gl_buffer_object Base;
dri_bo *buffer; /* the low-level buffer manager's buffer handle */
/** System memory buffer data, if not using a BO to store the data. */
void *sys_buffer;
struct intel_region *region; /* Is there a zero-copy texture
associated with this (pixel)
buffer object? */
GLboolean mapped_gtt;
};
/* Get the bm buffer associated with a GL bufferobject:
*/
dri_bo *intel_bufferobj_buffer(struct intel_context *intel,
struct intel_buffer_object
*obj, GLuint flag);
/* Hook the bufferobject implementation into mesa:
*/
void intel_bufferobj_init(struct intel_context *intel);
/* Are the obj->Name tests necessary? Unfortunately yes, mesa
* allocates a couple of gl_buffer_object structs statically, and
* the Name == 0 test is the only way to identify them and avoid
* casting them erroneously to our structs.
*/
static INLINE struct intel_buffer_object *
intel_buffer_object(struct gl_buffer_object *obj)
{
if (obj->Name)
return (struct intel_buffer_object *) obj;
else
return NULL;
}
/* Helpers for zerocopy image uploads. See also intel_regions.h:
*/
void intel_bufferobj_cow(struct intel_context *intel,
struct intel_buffer_object *intel_obj);
void intel_bufferobj_release_region(struct intel_context *intel,
struct intel_buffer_object *intel_obj);
#endif
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