1 /**************************************************************************
2 *
3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
5 * Copyright 2010 LunarG, Inc.
6 * All Rights Reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the
10 * "Software"), to deal in the Software without restriction, including
11 * without limitation the rights to use, copy, modify, merge, publish,
12 * distribute, sub license, and/or sell copies of the Software, and to
13 * permit persons to whom the Software is furnished to do so, subject to
14 * the following conditions:
15 *
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
18 * of the Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
25 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26 * DEALINGS IN THE SOFTWARE.
27 *
28 **************************************************************************/
29
30
31 #ifndef EGLSURFACE_INCLUDED
32 #define EGLSURFACE_INCLUDED
33
34
35 #include "egltypedefs.h"
36 #include "egldisplay.h"
37
38
39 /**
40 * "Base" class for device driver surfaces.
41 */
42 struct _egl_surface
43 {
44 /* A surface is a display resource */
45 _EGLResource Resource;
46
47 /* The context that is currently bound to the surface */
48 _EGLContext *CurrentContext;
49
50 _EGLConfig *Config;
51
52 EGLint Type; /* one of EGL_WINDOW_BIT, EGL_PIXMAP_BIT or EGL_PBUFFER_BIT */
53
54 /* attributes set by attribute list */
55 EGLint Width, Height;
56 EGLenum TextureFormat;
57 EGLenum TextureTarget;
58 EGLBoolean MipmapTexture;
59 EGLBoolean LargestPbuffer;
60 EGLenum RenderBuffer;
61 EGLenum VGAlphaFormat;
62 EGLenum VGColorspace;
63
64 /* attributes set by eglSurfaceAttrib */
65 EGLint MipmapLevel;
66 EGLenum MultisampleResolve;
67 EGLenum SwapBehavior;
68
69 EGLint HorizontalResolution, VerticalResolution;
70 EGLint AspectRatio;
71
72 EGLint SwapInterval;
73
74 /* True if the surface is bound to an OpenGL ES texture */
75 EGLBoolean BoundToTexture;
76
77 EGLBoolean PostSubBufferSupportedNV;
78 };
79
80
81 PUBLIC EGLBoolean
82 _eglInitSurface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
83 _EGLConfig *config, const EGLint *attrib_list);
84
85
86 extern EGLBoolean
87 _eglQuerySurface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint attribute, EGLint *value);
88
89
90 extern EGLBoolean
91 _eglSurfaceAttrib(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint attribute, EGLint value);
92
93
94 PUBLIC extern EGLBoolean
95 _eglBindTexImage(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint buffer);
96
97
98 extern EGLBoolean
99 _eglSwapInterval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint interval);
100
101
102 /**
103 * Increment reference count for the surface.
104 */
105 static INLINE _EGLSurface *
_eglGetSurface(_EGLSurface * surf)106 _eglGetSurface(_EGLSurface *surf)
107 {
108 if (surf)
109 _eglGetResource(&surf->Resource);
110 return surf;
111 }
112
113
114 /**
115 * Decrement reference count for the surface.
116 */
117 static INLINE EGLBoolean
_eglPutSurface(_EGLSurface * surf)118 _eglPutSurface(_EGLSurface *surf)
119 {
120 return (surf) ? _eglPutResource(&surf->Resource) : EGL_FALSE;
121 }
122
123
124 /**
125 * Link a surface to its display and return the handle of the link.
126 * The handle can be passed to client directly.
127 */
128 static INLINE EGLSurface
_eglLinkSurface(_EGLSurface * surf)129 _eglLinkSurface(_EGLSurface *surf)
130 {
131 _eglLinkResource(&surf->Resource, _EGL_RESOURCE_SURFACE);
132 return (EGLSurface) surf;
133 }
134
135
136 /**
137 * Unlink a linked surface from its display.
138 * Accessing an unlinked surface should generate EGL_BAD_SURFACE error.
139 */
140 static INLINE void
_eglUnlinkSurface(_EGLSurface * surf)141 _eglUnlinkSurface(_EGLSurface *surf)
142 {
143 _eglUnlinkResource(&surf->Resource, _EGL_RESOURCE_SURFACE);
144 }
145
146
147 /**
148 * Lookup a handle to find the linked surface.
149 * Return NULL if the handle has no corresponding linked surface.
150 */
151 static INLINE _EGLSurface *
_eglLookupSurface(EGLSurface surface,_EGLDisplay * dpy)152 _eglLookupSurface(EGLSurface surface, _EGLDisplay *dpy)
153 {
154 _EGLSurface *surf = (_EGLSurface *) surface;
155 if (!dpy || !_eglCheckResource((void *) surf, _EGL_RESOURCE_SURFACE, dpy))
156 surf = NULL;
157 return surf;
158 }
159
160
161 /**
162 * Return the handle of a linked surface, or EGL_NO_SURFACE.
163 */
164 static INLINE EGLSurface
_eglGetSurfaceHandle(_EGLSurface * surf)165 _eglGetSurfaceHandle(_EGLSurface *surf)
166 {
167 _EGLResource *res = (_EGLResource *) surf;
168 return (res && _eglIsResourceLinked(res)) ?
169 (EGLSurface) surf : EGL_NO_SURFACE;
170 }
171
172
173 #endif /* EGLSURFACE_INCLUDED */
174