src/egl/main/eglscreen.h

   1 #ifndef EGLSCREEN_INCLUDED
   2 #define EGLSCREEN_INCLUDED
   3
   4
   5 #include "egltypedefs.h"
   6
   7
   8 #ifdef EGL_MESA_screen_surface
   9
  10
  11 #define _EGL_SCREEN_MAX_MODES 16
  12
  13
  14 /**
  15  * Per-screen information.
  16  * Note that an EGL screen doesn't have a size.  A screen may be set to
  17  * one of several display modes (width/height/scanrate).  The screen
  18  * then displays a drawing surface.  The drawing surface must be at least
  19  * as large as the display mode's resolution.  If it's larger, the
  20  * OriginX and OriginY fields control what part of the surface is visible
  21  * on the screen.
  22  */
  23 struct _egl_screen
  24 {
  25    _EGLDisplay *Display;
  26
  27    EGLScreenMESA Handle; /* The public/opaque handle which names this object */
  28
  29    _EGLMode *CurrentMode;
  30    _EGLSurface *CurrentSurface;
  31
  32    EGLint OriginX, OriginY; /**< Origin of scan-out region w.r.t. surface */
  33    EGLint StepX, StepY;     /**< Screen position/origin granularity */
  34
  35    EGLint NumModes;
  36    _EGLMode *Modes;  /**< array [NumModes] */
  37 };
  38
  39
  40 PUBLIC void
  41 _eglInitScreen(_EGLScreen *screen, _EGLDisplay *dpy, EGLint num_modes);
  42
  43
  44 PUBLIC EGLScreenMESA
  45 _eglLinkScreen(_EGLScreen *screen);
  46
  47
  48 extern _EGLScreen *
  49 _eglLookupScreen(EGLScreenMESA screen, _EGLDisplay *dpy);
  50
  51
  52 /**
  53  * Return the handle of a linked screen.
  54  */
  55 static INLINE EGLScreenMESA
  56 _eglGetScreenHandle(_EGLScreen *screen)
  57 {
  58    return (screen) ? screen->Handle : (EGLScreenMESA) 0;
  59 }
  60
  61
  62 extern EGLBoolean
  63 _eglGetScreensMESA(_EGLDriver *drv, _EGLDisplay *dpy, EGLScreenMESA *screens, EGLint max_screens, EGLint *num_screens);
  64
  65
  66 extern EGLBoolean
  67 _eglScreenPositionMESA(_EGLDriver *drv, _EGLDisplay *dpy, _EGLScreen *scrn, EGLint x, EGLint y);
  68
  69
  70 extern EGLBoolean
  71 _eglQueryScreenSurfaceMESA(_EGLDriver *drv, _EGLDisplay *dpy,
  72                            _EGLScreen *scrn, _EGLSurface **surface);
  73
  74
  75 extern EGLBoolean
  76 _eglQueryScreenModeMESA(_EGLDriver *drv, _EGLDisplay *dpy, _EGLScreen *scrn, _EGLMode **m);
  77
  78
  79 extern EGLBoolean
  80 _eglQueryScreenMESA(_EGLDriver *drv, _EGLDisplay *dpy, _EGLScreen *scrn, EGLint attribute, EGLint *value);
  81
  82
  83 #endif /* EGL_MESA_screen_surface */
  84
  85
  86 #endif /* EGLSCREEN_INCLUDED */