src/egl/main/eglscreen.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 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 */