intel_regions.h revision b07c78bfe94c17e6fccba70923b03a29c751fde1 
1/**************************************************************************
2 *
3 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
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
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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:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
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.
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27
28#ifndef INTEL_REGIONS_H
29#define INTEL_REGIONS_H
30
31/** @file intel_regions.h
32 *
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.
36 */
37
38#include <xf86drm.h>
39
40#include "main/mtypes.h"
41#include "intel_bufmgr.h"
42
43struct intel_context;
44struct intel_buffer_object;
45
46/**
47 * A layer on top of the bufmgr buffers that adds a few useful things:
48 *
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???)
53 */
54struct intel_region
55{
56   drm_intel_bo *bo;  /**< 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 */
64
65   uint32_t tiling; /**< Which tiling mode the region is in */
66
67   uint32_t name; /**< Global name for the bo */
68   struct intel_screen *screen;
69};
70
71
72/* Allocate a refcounted region.  Pointers to regions should only be
73 * copied by calling intel_reference_region().
74 */
75struct intel_region *intel_region_alloc(struct intel_screen *screen,
76                                        uint32_t tiling,
77					GLuint cpp, GLuint width,
78                                        GLuint height,
79					GLboolean expect_accelerated_upload);
80
81struct intel_region *
82intel_region_alloc_for_handle(struct intel_screen *screen,
83			      GLuint cpp,
84			      GLuint width, GLuint height, GLuint pitch,
85			      unsigned int handle, const char *name);
86
87GLboolean
88intel_region_flink(struct intel_region *region, uint32_t *name);
89
90void intel_region_reference(struct intel_region **dst,
91                            struct intel_region *src);
92
93void intel_region_release(struct intel_region **ib);
94
95void intel_recreate_static_regions(struct intel_context *intel);
96
97/* Map/unmap regions.  This is refcounted also:
98 */
99GLubyte *intel_region_map(struct intel_context *intel,
100                          struct intel_region *ib);
101
102void intel_region_unmap(struct intel_context *intel, struct intel_region *ib);
103
104/* Copy rectangular sub-regions
105 */
106GLboolean
107intel_region_copy(struct intel_context *intel,
108		  struct intel_region *dest,
109		  GLuint dest_offset,
110		  GLuint destx, GLuint desty,
111		  struct intel_region *src,
112		  GLuint src_offset,
113		  GLuint srcx, GLuint srcy, GLuint width, GLuint height,
114		  GLboolean flip,
115		  GLenum logicop);
116
117void _mesa_copy_rect(GLubyte * dst,
118                GLuint cpp,
119                GLuint dst_pitch,
120                GLuint dst_x,
121                GLuint dst_y,
122                GLuint width,
123                GLuint height,
124                const GLubyte * src,
125                GLuint src_pitch, GLuint src_x, GLuint src_y);
126
127struct __DRIimageRec {
128   struct intel_region *region;
129   GLenum internal_format;
130   GLuint format;
131   GLenum data_type;
132   void *data;
133};
134
135#endif
136