| /************************************************************************** |
| * |
| * 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 "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 */ |
| |
| struct intel_region *region; /* Is there a zero-copy texture |
| associated with this (pixel) |
| buffer object? */ |
| }; |
| |
| |
| /* 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 |