src/egl/main/eglglobals.c

   1 #include <stdio.h>
   2 #include "eglglobals.h"
   3
   4
   5 struct _egl_global _eglGlobal = { EGL_FALSE };
   6
   7
   8 /**
   9  * Init the fields in the _eglGlobal struct
  10  * May be safely called more than once.
  11  */
  12 void
  13 _eglInitGlobals(void)
  14 {
  15    if (!_eglGlobal.Initialized) {
  16       _eglGlobal.Displays = _eglNewHashTable();
  17       _eglGlobal.Contexts = _eglNewHashTable();
  18       _eglGlobal.Surfaces = _eglNewHashTable();
  19       _eglGlobal.FreeScreenHandle = 1;
  20       _eglGlobal.CurrentContext = EGL_NO_CONTEXT;
  21       _eglGlobal.LastError = EGL_SUCCESS;
  22       _eglGlobal.Initialized = EGL_TRUE;
  23    }
  24 }
  25
  26
  27 /**
  28  * Should call this via an atexit handler.
  29  */
  30 void
  31 _eglDestroyGlobals(void)
  32 {
  33    /* XXX TODO walk over table entries, deleting each */
  34    _eglDeleteHashTable(_eglGlobal.Displays);
  35    _eglDeleteHashTable(_eglGlobal.Contexts);
  36    _eglDeleteHashTable(_eglGlobal.Surfaces);
  37 }
  38
  39
  40
  41 /**
  42  * Record EGL error code.
  43  */
  44 void
  45 _eglError(EGLint errCode, const char *msg)
  46 {
  47    if (_eglGlobal.LastError == EGL_SUCCESS) {
  48       _eglGlobal.LastError = errCode;
  49       /* XXX temporary */
  50       fprintf(stderr, "EGL Error 0x%x in %s\n", errCode, msg);
  51    }
  52 }
  53
  54
  55 /**
  56  * Return a new screen handle/ID.
  57  * NOTE: we never reuse these!
  58  */
  59 EGLScreenMESA
  60 _eglAllocScreenHandle(void)
  61 {
  62    EGLScreenMESA s = _eglGlobal.FreeScreenHandle;
  63    _eglGlobal.FreeScreenHandle++;
  64    return s;
  65 }