summaryrefslogtreecommitdiff
path: root/Build/source/libs/cairo/cairo-1.14.2/src/cairo-gl.h
blob: 9fd7608f5cfec20228696ac46ec82c9e18e3287b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
/* Cairo - a vector graphics library with display and print output
 *
 * Copyright © 2009 Eric Anholt
 * Copyright © 2009 Chris Wilson
 *
 * This library is free software; you can redistribute it and/or
 * modify it either under the terms of the GNU Lesser General Public
 * License version 2.1 as published by the Free Software Foundation
 * (the "LGPL") or, at your option, under the terms of the Mozilla
 * Public License Version 1.1 (the "MPL"). If you do not alter this
 * notice, a recipient may use your version of this file under either
 * the MPL or the LGPL.
 *
 * You should have received a copy of the LGPL along with this library
 * in the file COPYING-LGPL-2.1; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
 * You should have received a copy of the MPL along with this library
 * in the file COPYING-MPL-1.1
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
 * OF ANY KIND, either express or implied. See the LGPL or the MPL for
 * the specific language governing rights and limitations.
 *
 * The Original Code is the cairo graphics library.
 *
 * The Initial Developer of the Original Code is Eric Anholt.
 */

/*
 * cairo-gl.h:
 *
 * The cairo-gl backend provides an implementation of possibly
 * hardware-accelerated cairo rendering by targeting the OpenGL API.
 * The goal of the cairo-gl backend is to provide better performance
 * with equal functionality to cairo-image where possible.  It does
 * not directly provide for applying additional OpenGL effects to
 * cairo surfaces.
 *
 * Cairo-gl allows interoperability with other GL rendering through GL
 * context sharing.  Cairo-gl surfaces are created in reference to a
 * #cairo_device_t, which represents a GL context created by the user.
 * When that GL context is created with its sharePtr set to another
 * context (or vice versa), its objects (textures backing cairo-gl
 * surfaces) can be accessed in the other OpenGL context.  This allows
 * cairo-gl to maintain its drawing state in one context while the
 * user's 3D rendering occurs in the user's other context.
 *
 * However, as only one context can be current to a thread at a time,
 * cairo-gl may make its context current to the thread on any cairo
 * call which interacts with a cairo-gl surface or the cairo-gl
 * device.  As a result, the user must make their own context current
 * between any cairo calls and their own OpenGL rendering.
 **/

#ifndef CAIRO_GL_H
#define CAIRO_GL_H

#include "cairo.h"

#if CAIRO_HAS_GL_SURFACE || CAIRO_HAS_GLESV2_SURFACE

CAIRO_BEGIN_DECLS

cairo_public cairo_surface_t *
cairo_gl_surface_create (cairo_device_t *device,
			 cairo_content_t content,
			 int width, int height);

cairo_public cairo_surface_t *
cairo_gl_surface_create_for_texture (cairo_device_t *abstract_device,
				     cairo_content_t content,
				     unsigned int tex,
                                     int width, int height);
cairo_public void
cairo_gl_surface_set_size (cairo_surface_t *surface, int width, int height);

cairo_public int
cairo_gl_surface_get_width (cairo_surface_t *abstract_surface);

cairo_public int
cairo_gl_surface_get_height (cairo_surface_t *abstract_surface);

cairo_public void
cairo_gl_surface_swapbuffers (cairo_surface_t *surface);

cairo_public void
cairo_gl_device_set_thread_aware (cairo_device_t	*device,
				  cairo_bool_t		 thread_aware);

#if CAIRO_HAS_GLX_FUNCTIONS
#include <GL/glx.h>

cairo_public cairo_device_t *
cairo_glx_device_create (Display *dpy, GLXContext gl_ctx);

cairo_public Display *
cairo_glx_device_get_display (cairo_device_t *device);

cairo_public GLXContext
cairo_glx_device_get_context (cairo_device_t *device);

cairo_public cairo_surface_t *
cairo_gl_surface_create_for_window (cairo_device_t *device,
				    Window win,
				    int width, int height);
#endif

#if CAIRO_HAS_WGL_FUNCTIONS
#include <windows.h>

cairo_public cairo_device_t *
cairo_wgl_device_create (HGLRC rc);

cairo_public HGLRC
cairo_wgl_device_get_context (cairo_device_t *device);

cairo_public cairo_surface_t *
cairo_gl_surface_create_for_dc (cairo_device_t		*device,
				HDC			 dc,
				int			 width,
				int			 height);
#endif

#if CAIRO_HAS_EGL_FUNCTIONS
#include <EGL/egl.h>

cairo_public cairo_device_t *
cairo_egl_device_create (EGLDisplay dpy, EGLContext egl);

cairo_public cairo_surface_t *
cairo_gl_surface_create_for_egl (cairo_device_t	*device,
				 EGLSurface	 egl,
				 int		 width,
				 int		 height);

cairo_public EGLDisplay
cairo_egl_device_get_display (cairo_device_t *device);

cairo_public EGLSurface
cairo_egl_device_get_context (cairo_device_t *device);

#endif

CAIRO_END_DECLS

#else  /* CAIRO_HAS_GL_SURFACE */
# error Cairo was not compiled with support for the GL backend
#endif /* CAIRO_HAS_GL_SURFACE */

#endif /* CAIRO_GL_H */