egl: drop unused _EGLDriver & _EGLDisplay from _eglQueryContext()
[mesa.git] / src / egl / main / eglcontext.h
1 /**************************************************************************
2 *
3 * Copyright 2008 VMware, Inc.
4 * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
5 * Copyright 2010-2011 LunarG, Inc.
6 * All Rights Reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
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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
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28 **************************************************************************/
29
30
31 #ifndef EGLCONTEXT_INCLUDED
32 #define EGLCONTEXT_INCLUDED
33
34 #include "c99_compat.h"
35
36 #include "egltypedefs.h"
37 #include "egldisplay.h"
38
39
40 #ifdef __cplusplus
41 extern "C" {
42 #endif
43
44 /**
45 * "Base" class for device driver contexts.
46 */
47 struct _egl_context
48 {
49 /* A context is a display resource */
50 _EGLResource Resource;
51
52 /* The bound status of the context */
53 _EGLThreadInfo *Binding;
54 _EGLSurface *DrawSurface;
55 _EGLSurface *ReadSurface;
56
57 _EGLConfig *Config;
58
59 EGLint ClientAPI; /**< EGL_OPENGL_ES_API, EGL_OPENGL_API, EGL_OPENVG_API */
60 EGLint ClientMajorVersion;
61 EGLint ClientMinorVersion;
62 EGLint Flags;
63 EGLint Profile;
64 EGLint ResetNotificationStrategy;
65 EGLint ContextPriority;
66 EGLBoolean NoError;
67 EGLint ReleaseBehavior;
68 };
69
70
71 extern EGLBoolean
72 _eglInitContext(_EGLContext *ctx, _EGLDisplay *disp,
73 _EGLConfig *config, const EGLint *attrib_list);
74
75
76 extern EGLBoolean
77 _eglQueryContext(_EGLContext *ctx, EGLint attribute, EGLint *value);
78
79
80 extern EGLBoolean
81 _eglBindContext(_EGLContext *ctx, _EGLSurface *draw, _EGLSurface *read,
82 _EGLContext **old_ctx,
83 _EGLSurface **old_draw, _EGLSurface **old_read);
84
85 extern _EGLContext *
86 _eglBindContextToThread(_EGLContext *ctx, _EGLThreadInfo *t);
87
88
89 /**
90 * Increment reference count for the context.
91 */
92 static inline _EGLContext *
93 _eglGetContext(_EGLContext *ctx)
94 {
95 if (ctx)
96 _eglGetResource(&ctx->Resource);
97 return ctx;
98 }
99
100
101 /**
102 * Decrement reference count for the context.
103 */
104 static inline EGLBoolean
105 _eglPutContext(_EGLContext *ctx)
106 {
107 return (ctx) ? _eglPutResource(&ctx->Resource) : EGL_FALSE;
108 }
109
110
111 /**
112 * Link a context to its display and return the handle of the link.
113 * The handle can be passed to client directly.
114 */
115 static inline EGLContext
116 _eglLinkContext(_EGLContext *ctx)
117 {
118 _eglLinkResource(&ctx->Resource, _EGL_RESOURCE_CONTEXT);
119 return (EGLContext) ctx;
120 }
121
122
123 /**
124 * Unlink a linked context from its display.
125 * Accessing an unlinked context should generate EGL_BAD_CONTEXT error.
126 */
127 static inline void
128 _eglUnlinkContext(_EGLContext *ctx)
129 {
130 _eglUnlinkResource(&ctx->Resource, _EGL_RESOURCE_CONTEXT);
131 }
132
133
134 /**
135 * Lookup a handle to find the linked context.
136 * Return NULL if the handle has no corresponding linked context.
137 */
138 static inline _EGLContext *
139 _eglLookupContext(EGLContext context, _EGLDisplay *disp)
140 {
141 _EGLContext *ctx = (_EGLContext *) context;
142 if (!disp || !_eglCheckResource((void *) ctx, _EGL_RESOURCE_CONTEXT, disp))
143 ctx = NULL;
144 return ctx;
145 }
146
147
148 /**
149 * Return the handle of a linked context, or EGL_NO_CONTEXT.
150 */
151 static inline EGLContext
152 _eglGetContextHandle(_EGLContext *ctx)
153 {
154 _EGLResource *res = (_EGLResource *) ctx;
155 return (res && _eglIsResourceLinked(res)) ?
156 (EGLContext) ctx : EGL_NO_CONTEXT;
157 }
158
159
160 #ifdef __cplusplus
161 }
162 #endif
163
164 #endif /* EGLCONTEXT_INCLUDED */