1 /**************************************************************************
3 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
28 #ifndef INTEL_REGIONS_H
29 #define INTEL_REGIONS_H
31 /** @file intel_regions.h
33 * Structure definitions and prototypes for intel_region handling,
34 * which is the basic structure for rectangular collections of pixels
35 * stored in a drm_intel_bo.
41 #include "main/mtypes.h"
42 #include "intel_bufmgr.h"
45 struct intel_buffer_object
;
48 * A layer on top of the bufmgr buffers that adds a few useful things:
50 * - Refcounting for local buffer references.
51 * - Refcounting for buffer maps
52 * - Buffer dimensions - pitch and height.
53 * - Blitter commands for copying 2D regions between buffers. (really???)
57 drm_intel_bo
*bo
; /**< buffer manager's buffer */
58 GLuint refcount
; /**< Reference count for region */
59 GLuint cpp
; /**< bytes per pixel */
60 GLuint width
; /**< in pixels */
61 GLuint height
; /**< in pixels */
62 GLuint pitch
; /**< in pixels */
63 GLubyte
*map
; /**< only non-NULL when region is actually mapped */
64 GLuint map_refcount
; /**< Reference count for mapping */
66 uint32_t tiling
; /**< Which tiling mode the region is in */
68 uint32_t name
; /**< Global name for the bo */
69 struct intel_screen
*screen
;
73 /* Allocate a refcounted region. Pointers to regions should only be
74 * copied by calling intel_reference_region().
76 struct intel_region
*intel_region_alloc(struct intel_screen
*screen
,
78 GLuint cpp
, GLuint width
,
80 bool expect_accelerated_upload
);
83 intel_region_alloc_for_handle(struct intel_screen
*screen
,
85 GLuint width
, GLuint height
, GLuint pitch
,
86 unsigned int handle
, const char *name
);
89 intel_region_flink(struct intel_region
*region
, uint32_t *name
);
91 void intel_region_reference(struct intel_region
**dst
,
92 struct intel_region
*src
);
94 void intel_region_release(struct intel_region
**ib
);
96 void intel_recreate_static_regions(struct intel_context
*intel
);
99 * Map/unmap regions. This is refcounted also:
101 * \param mode bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
103 GLubyte
*intel_region_map(struct intel_context
*intel
,
104 struct intel_region
*ib
,
107 void intel_region_unmap(struct intel_context
*intel
, struct intel_region
*ib
);
109 /* Copy rectangular sub-regions
112 intel_region_copy(struct intel_context
*intel
,
113 struct intel_region
*dest
,
115 GLuint destx
, GLuint desty
,
116 struct intel_region
*src
,
118 GLuint srcx
, GLuint srcy
, GLuint width
, GLuint height
,
122 void _mesa_copy_rect(GLubyte
* dst
,
130 GLuint src_pitch
, GLuint src_x
, GLuint src_y
);
132 struct __DRIimageRec
{
133 struct intel_region
*region
;
134 GLenum internal_format
;