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, which is
34 * the basic structure for rectangular collections of pixels stored in a dri_bo.
39 #include "main/mtypes.h"
40 #include "intel_bufmgr.h"
43 struct intel_buffer_object
;
46 * A layer on top of the bufmgr buffers that adds a few useful things:
48 * - Refcounting for local buffer references.
49 * - Refcounting for buffer maps
50 * - Buffer dimensions - pitch and height.
51 * - Blitter commands for copying 2D regions between buffers. (really???)
55 dri_bo
*buffer
; /**< buffer manager's buffer */
56 GLuint refcount
; /**< Reference count for region */
57 GLuint cpp
; /**< bytes per pixel */
58 GLuint width
; /**< in pixels */
59 GLuint height
; /**< in pixels */
60 GLuint pitch
; /**< in pixels */
61 GLubyte
*map
; /**< only non-NULL when region is actually mapped */
62 GLuint map_refcount
; /**< Reference count for mapping */
64 GLuint draw_offset
; /**< Offset of drawing address within the region */
65 uint32_t tiling
; /**< Which tiling mode the region is in */
66 uint32_t bit_6_swizzle
; /**< GEM flag for address swizzling requirement */
67 drmAddress classic_map
; /**< drmMap of the region when not in GEM mode */
68 struct intel_buffer_object
*pbo
; /* zero-copy uploads */
72 /* Allocate a refcounted region. Pointers to regions should only be
73 * copied by calling intel_reference_region().
75 struct intel_region
*intel_region_alloc(struct intel_context
*intel
,
76 GLuint cpp
, GLuint width
,
77 GLuint height
, GLuint pitch
,
78 GLboolean expect_accelerated_upload
);
81 intel_region_alloc_for_handle(struct intel_context
*intel
,
83 GLuint width
, GLuint height
, GLuint pitch
,
84 unsigned int handle
, const char *name
);
86 void intel_region_reference(struct intel_region
**dst
,
87 struct intel_region
*src
);
89 void intel_region_release(struct intel_region
**ib
);
91 void intel_recreate_static_regions(struct intel_context
*intel
);
93 /* Map/unmap regions. This is refcounted also:
95 GLubyte
*intel_region_map(struct intel_context
*intel
,
96 struct intel_region
*ib
);
98 void intel_region_unmap(struct intel_context
*intel
, struct intel_region
*ib
);
101 /* Upload data to a rectangular sub-region
103 void intel_region_data(struct intel_context
*intel
,
104 struct intel_region
*dest
,
106 GLuint destx
, GLuint desty
,
107 const void *src
, GLuint src_stride
,
108 GLuint srcx
, GLuint srcy
, GLuint width
, GLuint height
);
110 /* Copy rectangular sub-regions
112 void 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
);
120 /* Fill a rectangular sub-region
122 void intel_region_fill(struct intel_context
*intel
,
123 struct intel_region
*dest
,
125 GLuint destx
, GLuint desty
,
126 GLuint width
, GLuint height
, GLuint color
);
128 /* Helpers for zerocopy uploads, particularly texture image uploads:
130 void intel_region_attach_pbo(struct intel_context
*intel
,
131 struct intel_region
*region
,
132 struct intel_buffer_object
*pbo
);
133 void intel_region_release_pbo(struct intel_context
*intel
,
134 struct intel_region
*region
);
135 void intel_region_cow(struct intel_context
*intel
,
136 struct intel_region
*region
);
138 dri_bo
*intel_region_buffer(struct intel_context
*intel
,
139 struct intel_region
*region
,
142 void _mesa_copy_rect(GLubyte
* dst
,
150 GLuint src_pitch
, GLuint src_x
, GLuint src_y
);