1 /**************************************************************************
2 *
3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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
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 EGLCONFIG_INCLUDED
32 #define EGLCONFIG_INCLUDED
33
34
35 #include <assert.h>
36 #include <stddef.h>
37 #include "egltypedefs.h"
38
39
40 /* update _eglValidationTable and _eglOffsetOfConfig before updating this
41 * struct */
42 struct _egl_config
43 {
44 _EGLDisplay *Display;
45
46 /* core */
47 EGLint BufferSize;
48 EGLint AlphaSize;
49 EGLint BlueSize;
50 EGLint GreenSize;
51 EGLint RedSize;
52 EGLint DepthSize;
53 EGLint StencilSize;
54 EGLint ConfigCaveat;
55 EGLint ConfigID;
56 EGLint Level;
57 EGLint MaxPbufferHeight;
58 EGLint MaxPbufferPixels;
59 EGLint MaxPbufferWidth;
60 EGLint NativeRenderable;
61 EGLint NativeVisualID;
62 EGLint NativeVisualType;
63 EGLint Samples;
64 EGLint SampleBuffers;
65 EGLint SurfaceType;
66 EGLint TransparentType;
67 EGLint TransparentBlueValue;
68 EGLint TransparentGreenValue;
69 EGLint TransparentRedValue;
70 EGLint BindToTextureRGB;
71 EGLint BindToTextureRGBA;
72 EGLint MinSwapInterval;
73 EGLint MaxSwapInterval;
74 EGLint LuminanceSize;
75 EGLint AlphaMaskSize;
76 EGLint ColorBufferType;
77 EGLint RenderableType;
78 EGLint MatchNativePixmap;
79 EGLint Conformant;
80
81 /* extensions */
82 EGLint YInvertedNOK;
83 };
84
85
86 /**
87 * Map an EGL attribute enum to the offset of the member in _EGLConfig.
88 */
89 static INLINE EGLint
_eglOffsetOfConfig(EGLint attr)90 _eglOffsetOfConfig(EGLint attr)
91 {
92 switch (attr) {
93 #define ATTRIB_MAP(attr, memb) case attr: return offsetof(_EGLConfig, memb)
94 /* core */
95 ATTRIB_MAP(EGL_BUFFER_SIZE, BufferSize);
96 ATTRIB_MAP(EGL_ALPHA_SIZE, AlphaSize);
97 ATTRIB_MAP(EGL_BLUE_SIZE, BlueSize);
98 ATTRIB_MAP(EGL_GREEN_SIZE, GreenSize);
99 ATTRIB_MAP(EGL_RED_SIZE, RedSize);
100 ATTRIB_MAP(EGL_DEPTH_SIZE, DepthSize);
101 ATTRIB_MAP(EGL_STENCIL_SIZE, StencilSize);
102 ATTRIB_MAP(EGL_CONFIG_CAVEAT, ConfigCaveat);
103 ATTRIB_MAP(EGL_CONFIG_ID, ConfigID);
104 ATTRIB_MAP(EGL_LEVEL, Level);
105 ATTRIB_MAP(EGL_MAX_PBUFFER_HEIGHT, MaxPbufferHeight);
106 ATTRIB_MAP(EGL_MAX_PBUFFER_PIXELS, MaxPbufferPixels);
107 ATTRIB_MAP(EGL_MAX_PBUFFER_WIDTH, MaxPbufferWidth);
108 ATTRIB_MAP(EGL_NATIVE_RENDERABLE, NativeRenderable);
109 ATTRIB_MAP(EGL_NATIVE_VISUAL_ID, NativeVisualID);
110 ATTRIB_MAP(EGL_NATIVE_VISUAL_TYPE, NativeVisualType);
111 ATTRIB_MAP(EGL_SAMPLES, Samples);
112 ATTRIB_MAP(EGL_SAMPLE_BUFFERS, SampleBuffers);
113 ATTRIB_MAP(EGL_SURFACE_TYPE, SurfaceType);
114 ATTRIB_MAP(EGL_TRANSPARENT_TYPE, TransparentType);
115 ATTRIB_MAP(EGL_TRANSPARENT_BLUE_VALUE, TransparentBlueValue);
116 ATTRIB_MAP(EGL_TRANSPARENT_GREEN_VALUE, TransparentGreenValue);
117 ATTRIB_MAP(EGL_TRANSPARENT_RED_VALUE, TransparentRedValue);
118 ATTRIB_MAP(EGL_BIND_TO_TEXTURE_RGB, BindToTextureRGB);
119 ATTRIB_MAP(EGL_BIND_TO_TEXTURE_RGBA, BindToTextureRGBA);
120 ATTRIB_MAP(EGL_MIN_SWAP_INTERVAL, MinSwapInterval);
121 ATTRIB_MAP(EGL_MAX_SWAP_INTERVAL, MaxSwapInterval);
122 ATTRIB_MAP(EGL_LUMINANCE_SIZE, LuminanceSize);
123 ATTRIB_MAP(EGL_ALPHA_MASK_SIZE, AlphaMaskSize);
124 ATTRIB_MAP(EGL_COLOR_BUFFER_TYPE, ColorBufferType);
125 ATTRIB_MAP(EGL_RENDERABLE_TYPE, RenderableType);
126 ATTRIB_MAP(EGL_MATCH_NATIVE_PIXMAP, MatchNativePixmap);
127 ATTRIB_MAP(EGL_CONFORMANT, Conformant);
128 /* extensions */
129 ATTRIB_MAP(EGL_Y_INVERTED_NOK, YInvertedNOK);
130 #undef ATTRIB_MAP
131 default:
132 return -1;
133 }
134 }
135
136
137 /**
138 * Update a config for a given key.
139 *
140 * Note that a valid key is not necessarily a valid attribute. There are gaps
141 * in the attribute enums. The separation is to catch application errors.
142 * Drivers should never set a key that is an invalid attribute.
143 */
144 static INLINE void
_eglSetConfigKey(_EGLConfig * conf,EGLint key,EGLint val)145 _eglSetConfigKey(_EGLConfig *conf, EGLint key, EGLint val)
146 {
147 EGLint offset = _eglOffsetOfConfig(key);
148 assert(offset >= 0);
149 *((EGLint *) ((char *) conf + offset)) = val;
150 }
151
152
153 /**
154 * Return the value for a given key.
155 */
156 static INLINE EGLint
_eglGetConfigKey(const _EGLConfig * conf,EGLint key)157 _eglGetConfigKey(const _EGLConfig *conf, EGLint key)
158 {
159 EGLint offset = _eglOffsetOfConfig(key);
160 assert(offset >= 0);
161 return *((EGLint *) ((char *) conf + offset));
162 }
163
164
165 PUBLIC void
166 _eglInitConfig(_EGLConfig *config, _EGLDisplay *dpy, EGLint id);
167
168
169 PUBLIC EGLConfig
170 _eglLinkConfig(_EGLConfig *conf);
171
172
173 extern _EGLConfig *
174 _eglLookupConfig(EGLConfig config, _EGLDisplay *dpy);
175
176
177 /**
178 * Return the handle of a linked config.
179 */
180 static INLINE EGLConfig
_eglGetConfigHandle(_EGLConfig * conf)181 _eglGetConfigHandle(_EGLConfig *conf)
182 {
183 return (EGLConfig) conf;
184 }
185
186
187 PUBLIC EGLBoolean
188 _eglValidateConfig(const _EGLConfig *conf, EGLBoolean for_matching);
189
190
191 PUBLIC EGLBoolean
192 _eglMatchConfig(const _EGLConfig *conf, const _EGLConfig *criteria);
193
194
195 PUBLIC EGLBoolean
196 _eglParseConfigAttribList(_EGLConfig *conf, _EGLDisplay *dpy,
197 const EGLint *attrib_list);
198
199
200 PUBLIC EGLint
201 _eglCompareConfigs(const _EGLConfig *conf1, const _EGLConfig *conf2,
202 const _EGLConfig *criteria, EGLBoolean compare_id);
203
204
205 PUBLIC EGLBoolean
206 _eglFilterConfigArray(_EGLArray *array, EGLConfig *configs,
207 EGLint config_size, EGLint *num_configs,
208 EGLBoolean (*match)(const _EGLConfig *, void *),
209 EGLint (*compare)(const _EGLConfig *, const _EGLConfig *,
210 void *),
211 void *filter_data);
212
213
214 extern EGLBoolean
215 _eglChooseConfig(_EGLDriver *drv, _EGLDisplay *dpy, const EGLint *attrib_list, EGLConfig *configs, EGLint config_size, EGLint *num_config);
216
217
218 extern EGLBoolean
219 _eglGetConfigAttrib(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf, EGLint attribute, EGLint *value);
220
221
222 extern EGLBoolean
223 _eglGetConfigs(_EGLDriver *drv, _EGLDisplay *dpy, EGLConfig *configs, EGLint config_size, EGLint *num_config);
224
225
226 #endif /* EGLCONFIG_INCLUDED */
227