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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
  4.  * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
  5.  * Copyright 2010 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 EGLSCREEN_INCLUDED
  32. #define EGLSCREEN_INCLUDED
  33.  
  34.  
  35. #include "egltypedefs.h"
  36.  
  37.  
  38. #ifdef EGL_MESA_screen_surface
  39.  
  40.  
  41. #define _EGL_SCREEN_MAX_MODES 16
  42.  
  43.  
  44. /**
  45.  * Per-screen information.
  46.  * Note that an EGL screen doesn't have a size.  A screen may be set to
  47.  * one of several display modes (width/height/scanrate).  The screen
  48.  * then displays a drawing surface.  The drawing surface must be at least
  49.  * as large as the display mode's resolution.  If it's larger, the
  50.  * OriginX and OriginY fields control what part of the surface is visible
  51.  * on the screen.
  52.  */
  53. struct _egl_screen
  54. {
  55.    _EGLDisplay *Display;
  56.  
  57.    EGLScreenMESA Handle; /* The public/opaque handle which names this object */
  58.  
  59.    _EGLMode *CurrentMode;
  60.    _EGLSurface *CurrentSurface;
  61.  
  62.    EGLint OriginX, OriginY; /**< Origin of scan-out region w.r.t. surface */
  63.    EGLint StepX, StepY;     /**< Screen position/origin granularity */
  64.  
  65.    EGLint NumModes;
  66.    _EGLMode *Modes;  /**< array [NumModes] */
  67. };
  68.  
  69.  
  70. PUBLIC void
  71. _eglInitScreen(_EGLScreen *screen, _EGLDisplay *dpy, EGLint num_modes);
  72.  
  73.  
  74. PUBLIC EGLScreenMESA
  75. _eglLinkScreen(_EGLScreen *screen);
  76.  
  77.  
  78. extern _EGLScreen *
  79. _eglLookupScreen(EGLScreenMESA screen, _EGLDisplay *dpy);
  80.  
  81.  
  82. /**
  83.  * Return the handle of a linked screen.
  84.  */
  85. static INLINE EGLScreenMESA
  86. _eglGetScreenHandle(_EGLScreen *screen)
  87. {
  88.    return (screen) ? screen->Handle : (EGLScreenMESA) 0;
  89. }
  90.  
  91.  
  92. extern EGLBoolean
  93. _eglGetScreensMESA(_EGLDriver *drv, _EGLDisplay *dpy, EGLScreenMESA *screens, EGLint max_screens, EGLint *num_screens);
  94.  
  95.  
  96. extern EGLBoolean
  97. _eglScreenPositionMESA(_EGLDriver *drv, _EGLDisplay *dpy, _EGLScreen *scrn, EGLint x, EGLint y);
  98.  
  99.  
  100. extern EGLBoolean
  101. _eglQueryScreenSurfaceMESA(_EGLDriver *drv, _EGLDisplay *dpy,
  102.                            _EGLScreen *scrn, _EGLSurface **surface);
  103.  
  104.  
  105. extern EGLBoolean
  106. _eglQueryScreenModeMESA(_EGLDriver *drv, _EGLDisplay *dpy, _EGLScreen *scrn, _EGLMode **m);
  107.  
  108.  
  109. extern EGLBoolean
  110. _eglQueryScreenMESA(_EGLDriver *drv, _EGLDisplay *dpy, _EGLScreen *scrn, EGLint attribute, EGLint *value);
  111.  
  112.  
  113. #endif /* EGL_MESA_screen_surface */
  114.  
  115.  
  116. #endif /* EGLSCREEN_INCLUDED */
  117.