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 _eglGetScreenHandle(_EGLScreen * screen)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