src/egl/main/eglconfig.h

   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
  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
 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
 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
 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 */