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.
40 #include "main/mtypes.h"
41 #include "intel_bufmgr.h"
44 struct intel_buffer_object
;
47 * A layer on top of the bufmgr buffers that adds a few useful things:
49 * - Refcounting for local buffer references.
50 * - Refcounting for buffer maps
51 * - Buffer dimensions - pitch and height.
52 * - Blitter commands for copying 2D regions between buffers. (really???)
56 drm_intel_bo
*buffer
; /**< buffer manager's buffer */
57 GLuint refcount
; /**< Reference count for region */
58 GLuint cpp
; /**< bytes per pixel */
59 GLuint width
; /**< in pixels */
60 GLuint height
; /**< in pixels */
61 GLuint pitch
; /**< in pixels */
62 GLubyte
*map
; /**< only non-NULL when region is actually mapped */
63 GLuint map_refcount
; /**< Reference count for mapping */
65 GLuint draw_offset
; /**< Offset of drawing address within the region */
66 GLuint draw_x
, draw_y
; /**< Offset of drawing within the region */
68 uint32_t tiling
; /**< Which tiling mode the region is in */
69 struct intel_buffer_object
*pbo
; /* zero-copy uploads */
71 uint32_t name
; /**< Global name for the bo */
72 struct intel_screen
*screen
;
76 /* Allocate a refcounted region. Pointers to regions should only be
77 * copied by calling intel_reference_region().
79 struct intel_region
*intel_region_alloc(struct intel_screen
*screen
,
81 GLuint cpp
, GLuint width
,
83 GLboolean expect_accelerated_upload
);
86 intel_region_alloc_for_handle(struct intel_screen
*screen
,
88 GLuint width
, GLuint height
, GLuint pitch
,
89 unsigned int handle
, const char *name
);
92 intel_region_flink(struct intel_region
*region
, uint32_t *name
);
94 void intel_region_reference(struct intel_region
**dst
,
95 struct intel_region
*src
);
97 void intel_region_release(struct intel_region
**ib
);
99 void intel_recreate_static_regions(struct intel_context
*intel
);
101 /* Map/unmap regions. This is refcounted also:
103 GLubyte
*intel_region_map(struct intel_context
*intel
,
104 struct intel_region
*ib
);
106 void intel_region_unmap(struct intel_context
*intel
, struct intel_region
*ib
);
109 /* Upload data to a rectangular sub-region
111 void intel_region_data(struct intel_context
*intel
,
112 struct intel_region
*dest
,
114 GLuint destx
, GLuint desty
,
115 const void *src
, GLuint src_stride
,
116 GLuint srcx
, GLuint srcy
, GLuint width
, GLuint height
);
118 /* Copy rectangular sub-regions
121 intel_region_copy(struct intel_context
*intel
,
122 struct intel_region
*dest
,
124 GLuint destx
, GLuint desty
,
125 struct intel_region
*src
,
127 GLuint srcx
, GLuint srcy
, GLuint width
, GLuint height
,
131 /* Helpers for zerocopy uploads, particularly texture image uploads:
133 void intel_region_attach_pbo(struct intel_context
*intel
,
134 struct intel_region
*region
,
135 struct intel_buffer_object
*pbo
);
136 void intel_region_release_pbo(struct intel_context
*intel
,
137 struct intel_region
*region
);
138 void intel_region_cow(struct intel_context
*intel
,
139 struct intel_region
*region
);
141 drm_intel_bo
*intel_region_buffer(struct intel_context
*intel
,
142 struct intel_region
*region
,
145 void _mesa_copy_rect(GLubyte
* dst
,
153 GLuint src_pitch
, GLuint src_x
, GLuint src_y
);
155 struct __DRIimageRec
{
156 struct intel_region
*region
;
157 GLenum internal_format
;