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
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 "c99_compat.h"
38
39 #include "egltypedefs.h"
40
41
42 #ifdef __cplusplus
43 extern "C" {
44 #endif
45
46 /* update _eglValidationTable and _eglOffsetOfConfig before updating this
47 * struct */
48 struct _egl_config
49 {
50 _EGLDisplay *Display;
51
52 /* core */
53 EGLint BufferSize;
54 EGLint AlphaSize;
55 EGLint BlueSize;
56 EGLint GreenSize;
57 EGLint RedSize;
58 EGLint DepthSize;
59 EGLint StencilSize;
60 EGLint ConfigCaveat;
61 EGLint ConfigID;
62 EGLint Level;
63 EGLint MaxPbufferHeight;
64 EGLint MaxPbufferPixels;
65 EGLint MaxPbufferWidth;
66 EGLint NativeRenderable;
67 EGLint NativeVisualID;
68 EGLint NativeVisualType;
69 EGLint Samples;
70 EGLint SampleBuffers;
71 EGLint SurfaceType;
72 EGLint TransparentType;
73 EGLint TransparentBlueValue;
74 EGLint TransparentGreenValue;
75 EGLint TransparentRedValue;
76 EGLint BindToTextureRGB;
77 EGLint BindToTextureRGBA;
78 EGLint MinSwapInterval;
79 EGLint MaxSwapInterval;
80 EGLint LuminanceSize;
81 EGLint AlphaMaskSize;
82 EGLint ColorBufferType;
83 EGLint RenderableType;
84 EGLint MatchNativePixmap;
85 EGLint Conformant;
86
87 /* extensions */
88 EGLint YInvertedNOK;
89 EGLint FramebufferTargetAndroid;
90 EGLint RecordableAndroid;
91 EGLint ComponentType;
92 };
93
94
95 /**
96 * Map an EGL attribute enum to the offset of the member in _EGLConfig.
97 */
98 static inline EGLint
_eglOffsetOfConfig(EGLint attr)99 _eglOffsetOfConfig(EGLint attr)
100 {
101 switch (attr) {
102 #define ATTRIB_MAP(attr, memb) case attr: return offsetof(_EGLConfig, memb)
103 /* core */
104 ATTRIB_MAP(EGL_BUFFER_SIZE, BufferSize);
105 ATTRIB_MAP(EGL_ALPHA_SIZE, AlphaSize);
106 ATTRIB_MAP(EGL_BLUE_SIZE, BlueSize);
107 ATTRIB_MAP(EGL_GREEN_SIZE, GreenSize);
108 ATTRIB_MAP(EGL_RED_SIZE, RedSize);
109 ATTRIB_MAP(EGL_DEPTH_SIZE, DepthSize);
110 ATTRIB_MAP(EGL_STENCIL_SIZE, StencilSize);
111 ATTRIB_MAP(EGL_CONFIG_CAVEAT, ConfigCaveat);
112 ATTRIB_MAP(EGL_CONFIG_ID, ConfigID);
113 ATTRIB_MAP(EGL_LEVEL, Level);
114 ATTRIB_MAP(EGL_MAX_PBUFFER_HEIGHT, MaxPbufferHeight);
115 ATTRIB_MAP(EGL_MAX_PBUFFER_PIXELS, MaxPbufferPixels);
116 ATTRIB_MAP(EGL_MAX_PBUFFER_WIDTH, MaxPbufferWidth);
117 ATTRIB_MAP(EGL_NATIVE_RENDERABLE, NativeRenderable);
118 ATTRIB_MAP(EGL_NATIVE_VISUAL_ID, NativeVisualID);
119 ATTRIB_MAP(EGL_NATIVE_VISUAL_TYPE, NativeVisualType);
120 ATTRIB_MAP(EGL_SAMPLES, Samples);
121 ATTRIB_MAP(EGL_SAMPLE_BUFFERS, SampleBuffers);
122 ATTRIB_MAP(EGL_SURFACE_TYPE, SurfaceType);
123 ATTRIB_MAP(EGL_TRANSPARENT_TYPE, TransparentType);
124 ATTRIB_MAP(EGL_TRANSPARENT_BLUE_VALUE, TransparentBlueValue);
125 ATTRIB_MAP(EGL_TRANSPARENT_GREEN_VALUE, TransparentGreenValue);
126 ATTRIB_MAP(EGL_TRANSPARENT_RED_VALUE, TransparentRedValue);
127 ATTRIB_MAP(EGL_BIND_TO_TEXTURE_RGB, BindToTextureRGB);
128 ATTRIB_MAP(EGL_BIND_TO_TEXTURE_RGBA, BindToTextureRGBA);
129 ATTRIB_MAP(EGL_MIN_SWAP_INTERVAL, MinSwapInterval);
130 ATTRIB_MAP(EGL_MAX_SWAP_INTERVAL, MaxSwapInterval);
131 ATTRIB_MAP(EGL_LUMINANCE_SIZE, LuminanceSize);
132 ATTRIB_MAP(EGL_ALPHA_MASK_SIZE, AlphaMaskSize);
133 ATTRIB_MAP(EGL_COLOR_BUFFER_TYPE, ColorBufferType);
134 ATTRIB_MAP(EGL_RENDERABLE_TYPE, RenderableType);
135 ATTRIB_MAP(EGL_MATCH_NATIVE_PIXMAP, MatchNativePixmap);
136 ATTRIB_MAP(EGL_CONFORMANT, Conformant);
137 /* extensions */
138 ATTRIB_MAP(EGL_Y_INVERTED_NOK, YInvertedNOK);
139 ATTRIB_MAP(EGL_FRAMEBUFFER_TARGET_ANDROID, FramebufferTargetAndroid);
140 ATTRIB_MAP(EGL_RECORDABLE_ANDROID, RecordableAndroid);
141 ATTRIB_MAP(EGL_COLOR_COMPONENT_TYPE_EXT, ComponentType);
142 #undef ATTRIB_MAP
143 default:
144 return -1;
145 }
146 }
147
148
149 /**
150 * Update a config for a given key.
151 *
152 * Note that a valid key is not necessarily a valid attribute. There are gaps
153 * in the attribute enums. The separation is to catch application errors.
154 * Drivers should never set a key that is an invalid attribute.
155 */
156 static inline void
_eglSetConfigKey(_EGLConfig * conf,EGLint key,EGLint val)157 _eglSetConfigKey(_EGLConfig *conf, EGLint key, EGLint val)
158 {
159 EGLint offset = _eglOffsetOfConfig(key);
160 assert(offset >= 0);
161 *((EGLint *) ((char *) conf + offset)) = val;
162 }
163
164
165 /**
166 * Return the value for a given key.
167 */
168 static inline EGLint
_eglGetConfigKey(const _EGLConfig * conf,EGLint key)169 _eglGetConfigKey(const _EGLConfig *conf, EGLint key)
170 {
171 EGLint offset = _eglOffsetOfConfig(key);
172 assert(offset >= 0);
173 return *((EGLint *) ((char *) conf + offset));
174 }
175
176
177 extern void
178 _eglInitConfig(_EGLConfig *config, _EGLDisplay *disp, EGLint id);
179
180
181 extern EGLConfig
182 _eglLinkConfig(_EGLConfig *conf);
183
184
185 extern _EGLConfig *
186 _eglLookupConfig(EGLConfig config, _EGLDisplay *disp);
187
188
189 /**
190 * Return the handle of a linked config.
191 */
192 static inline EGLConfig
_eglGetConfigHandle(_EGLConfig * conf)193 _eglGetConfigHandle(_EGLConfig *conf)
194 {
195 return (EGLConfig) conf;
196 }
197
198
199 extern EGLBoolean
200 _eglValidateConfig(const _EGLConfig *conf, EGLBoolean for_matching);
201
202
203 extern EGLBoolean
204 _eglMatchConfig(const _EGLConfig *conf, const _EGLConfig *criteria);
205
206
207 extern EGLBoolean
208 _eglParseConfigAttribList(_EGLConfig *conf, _EGLDisplay *disp,
209 const EGLint *attrib_list);
210
211
212 extern EGLint
213 _eglCompareConfigs(const _EGLConfig *conf1, const _EGLConfig *conf2,
214 const _EGLConfig *criteria, EGLBoolean compare_id);
215
216
217 extern EGLBoolean
218 _eglFilterConfigArray(_EGLArray *array, EGLConfig *configs,
219 EGLint config_size, EGLint *num_configs,
220 EGLBoolean (*match)(const _EGLConfig *, void *),
221 EGLint (*compare)(const _EGLConfig *, const _EGLConfig *,
222 void *),
223 void *filter_data);
224
225
226 extern EGLBoolean
227 _eglChooseConfig(_EGLDisplay *disp, const EGLint *attrib_list, EGLConfig *configs, EGLint config_size, EGLint *num_config);
228
229
230 extern EGLBoolean
231 _eglGetConfigAttrib(_EGLDisplay *disp, _EGLConfig *conf, EGLint attribute, EGLint *value);
232
233
234 extern EGLBoolean
235 _eglGetConfigs(_EGLDisplay *disp, EGLConfig *configs, EGLint config_size, EGLint *num_config);
236
237
238 #ifdef __cplusplus
239 }
240 #endif
241
242 #endif /* EGLCONFIG_INCLUDED */
243