src/egl/main/eglconfig.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
   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 };
  91
  92
  93 /**
  94  * Map an EGL attribute enum to the offset of the member in _EGLConfig.
  95  */
  96 static inline EGLint
  97 _eglOffsetOfConfig(EGLint attr)
  98 {
  99    switch (attr) {
 100 #define ATTRIB_MAP(attr, memb) case attr: return offsetof(_EGLConfig, memb)
 101    /* core */
 102    ATTRIB_MAP(EGL_BUFFER_SIZE,               BufferSize);
 103    ATTRIB_MAP(EGL_ALPHA_SIZE,                AlphaSize);
 104    ATTRIB_MAP(EGL_BLUE_SIZE,                 BlueSize);
 105    ATTRIB_MAP(EGL_GREEN_SIZE,                GreenSize);
 106    ATTRIB_MAP(EGL_RED_SIZE,                  RedSize);
 107    ATTRIB_MAP(EGL_DEPTH_SIZE,                DepthSize);
 108    ATTRIB_MAP(EGL_STENCIL_SIZE,              StencilSize);
 109    ATTRIB_MAP(EGL_CONFIG_CAVEAT,             ConfigCaveat);
 110    ATTRIB_MAP(EGL_CONFIG_ID,                 ConfigID);
 111    ATTRIB_MAP(EGL_LEVEL,                     Level);
 112    ATTRIB_MAP(EGL_MAX_PBUFFER_HEIGHT,        MaxPbufferHeight);
 113    ATTRIB_MAP(EGL_MAX_PBUFFER_PIXELS,        MaxPbufferPixels);
 114    ATTRIB_MAP(EGL_MAX_PBUFFER_WIDTH,         MaxPbufferWidth);
 115    ATTRIB_MAP(EGL_NATIVE_RENDERABLE,         NativeRenderable);
 116    ATTRIB_MAP(EGL_NATIVE_VISUAL_ID,          NativeVisualID);
 117    ATTRIB_MAP(EGL_NATIVE_VISUAL_TYPE,        NativeVisualType);
 118    ATTRIB_MAP(EGL_SAMPLES,                   Samples);
 119    ATTRIB_MAP(EGL_SAMPLE_BUFFERS,            SampleBuffers);
 120    ATTRIB_MAP(EGL_SURFACE_TYPE,              SurfaceType);
 121    ATTRIB_MAP(EGL_TRANSPARENT_TYPE,          TransparentType);
 122    ATTRIB_MAP(EGL_TRANSPARENT_BLUE_VALUE,    TransparentBlueValue);
 123    ATTRIB_MAP(EGL_TRANSPARENT_GREEN_VALUE,   TransparentGreenValue);
 124    ATTRIB_MAP(EGL_TRANSPARENT_RED_VALUE,     TransparentRedValue);
 125    ATTRIB_MAP(EGL_BIND_TO_TEXTURE_RGB,       BindToTextureRGB);
 126    ATTRIB_MAP(EGL_BIND_TO_TEXTURE_RGBA,      BindToTextureRGBA);
 127    ATTRIB_MAP(EGL_MIN_SWAP_INTERVAL,         MinSwapInterval);
 128    ATTRIB_MAP(EGL_MAX_SWAP_INTERVAL,         MaxSwapInterval);
 129    ATTRIB_MAP(EGL_LUMINANCE_SIZE,            LuminanceSize);
 130    ATTRIB_MAP(EGL_ALPHA_MASK_SIZE,           AlphaMaskSize);
 131    ATTRIB_MAP(EGL_COLOR_BUFFER_TYPE,         ColorBufferType);
 132    ATTRIB_MAP(EGL_RENDERABLE_TYPE,           RenderableType);
 133    ATTRIB_MAP(EGL_MATCH_NATIVE_PIXMAP,       MatchNativePixmap);
 134    ATTRIB_MAP(EGL_CONFORMANT,                Conformant);
 135    /* extensions */
 136    ATTRIB_MAP(EGL_Y_INVERTED_NOK,            YInvertedNOK);
 137    ATTRIB_MAP(EGL_FRAMEBUFFER_TARGET_ANDROID, FramebufferTargetAndroid);
 138 #undef ATTRIB_MAP
 139    default:
 140       return -1;
 141    }
 142 }
 143
 144
 145 /**
 146  * Update a config for a given key.
 147  *
 148  * Note that a valid key is not necessarily a valid attribute.  There are gaps
 149  * in the attribute enums.  The separation is to catch application errors.
 150  * Drivers should never set a key that is an invalid attribute.
 151  */
 152 static inline void
 153 _eglSetConfigKey(_EGLConfig *conf, EGLint key, EGLint val)
 154 {
 155    EGLint offset = _eglOffsetOfConfig(key);
 156    assert(offset >= 0);
 157    *((EGLint *) ((char *) conf + offset)) = val;
 158 }
 159
 160
 161 /**
 162  * Return the value for a given key.
 163  */
 164 static inline EGLint
 165 _eglGetConfigKey(const _EGLConfig *conf, EGLint key)
 166 {
 167    EGLint offset = _eglOffsetOfConfig(key);
 168    assert(offset >= 0);
 169    return *((EGLint *) ((char *) conf + offset));
 170 }
 171
 172
 173 extern void
 174 _eglInitConfig(_EGLConfig *config, _EGLDisplay *dpy, EGLint id);
 175
 176
 177 extern EGLConfig
 178 _eglLinkConfig(_EGLConfig *conf);
 179
 180
 181 extern _EGLConfig *
 182 _eglLookupConfig(EGLConfig config, _EGLDisplay *dpy);
 183
 184
 185 /**
 186  * Return the handle of a linked config.
 187  */
 188 static inline EGLConfig
 189 _eglGetConfigHandle(_EGLConfig *conf)
 190 {
 191    return (EGLConfig) conf;
 192 }
 193
 194
 195 extern EGLBoolean
 196 _eglValidateConfig(const _EGLConfig *conf, EGLBoolean for_matching);
 197
 198
 199 extern EGLBoolean
 200 _eglMatchConfig(const _EGLConfig *conf, const _EGLConfig *criteria);
 201
 202
 203 extern EGLBoolean
 204 _eglParseConfigAttribList(_EGLConfig *conf, _EGLDisplay *dpy,
 205                           const EGLint *attrib_list);
 206
 207
 208 extern EGLint
 209 _eglCompareConfigs(const _EGLConfig *conf1, const _EGLConfig *conf2,
 210                    const _EGLConfig *criteria, EGLBoolean compare_id);
 211
 212
 213 extern EGLBoolean
 214 _eglFilterConfigArray(_EGLArray *array, EGLConfig *configs,
 215                       EGLint config_size, EGLint *num_configs,
 216                       EGLBoolean (*match)(const _EGLConfig *, void *),
 217                       EGLint (*compare)(const _EGLConfig *, const _EGLConfig *,
 218                                         void *),
 219                       void *filter_data);
 220
 221
 222 extern EGLBoolean
 223 _eglChooseConfig(_EGLDriver *drv, _EGLDisplay *dpy, const EGLint *attrib_list, EGLConfig *configs, EGLint config_size, EGLint *num_config);
 224
 225
 226 extern EGLBoolean
 227 _eglGetConfigAttrib(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf, EGLint attribute, EGLint *value);
 228
 229
 230 extern EGLBoolean
 231 _eglGetConfigs(_EGLDriver *drv, _EGLDisplay *dpy, EGLConfig *configs, EGLint config_size, EGLint *num_config);
 232
 233
 234 #ifdef __cplusplus
 235 }
 236 #endif
 237
 238 #endif /* EGLCONFIG_INCLUDED */