Added a stub driver implementation for Mesa EGL.

ppapi/lib/gl/egl/egldriver.c

+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "third_party/mesa/MesaLib/src/egl/main/egldriver.h"
+
+#include "third_party/mesa/MesaLib/src/egl/main/eglconfig.h"
+#include "third_party/mesa/MesaLib/src/egl/main/eglcontext.h"
+#include "third_party/mesa/MesaLib/src/egl/main/egldisplay.h"
+#include "third_party/mesa/MesaLib/src/egl/main/eglmisc.h"
+#include "third_party/mesa/MesaLib/src/egl/main/eglsurface.h"
+
+/**
+ * Functions for choosing and opening/loading device drivers.
+ */
+
+static _EGLDriver *_eglDriver;
+
+static EGLBoolean _eglLoadDriver() {
+  assert(!_eglDriver);
+
+  _eglDriver = _eglMain(NULL);
+  return _eglDriver ? EGL_TRUE : EGL_FALSE;
+}
+
+/**
+ * Match a display to a driver.  The display is initialized unless use_probe is
+ * true.
+ */
+
+_EGLDriver * _eglMatchDriver(_EGLDisplay *dpy, EGLBoolean use_probe) {
+  _EGLDriver * drv = NULL;
+  EGLint major = 0, minor = 0;
+
+  if (!_eglDriver && !_eglLoadDriver())
+    return NULL;
+
+  if (use_probe) {
+    if (_eglDriver->Probe)
+      _eglDriver->Probe(_eglDriver, dpy);
+    drv = _eglDriver;
+  } else {
+    if (_eglDriver->API.Initialize(_eglDriver, dpy, &major, &minor)) {
+      drv = _eglDriver;
+      dpy->Driver = drv;
+      dpy->Initialized = EGL_TRUE;
+      dpy->APImajor = major;
+      dpy->APIminor = minor;
+    }
+  }
+
+  return drv;
+}
+
+__eglMustCastToProperFunctionPointerType _eglGetDriverProc(
+    const char *procname) {
+  _EGLProc proc = NULL;
+
+  return proc;
+}
+
+/**
+ * Unload all drivers.
+ */
+void _eglUnloadDrivers(void) {
+  if (_eglDriver && _eglDriver->Unload)
+    _eglDriver->Unload(_eglDriver);
+
+  _eglDriver = NULL;
+}
+
+/**
+ * Plug all the available fallback routines into the given driver's
+ * dispatch table.
+ */
+void _eglInitDriverFallbacks(_EGLDriver *drv) {
+  /* If a pointer is set to NULL, then the device driver _really_ has
+   * to implement it.
+   */
+  drv->API.Initialize = NULL;
+  drv->API.Terminate = NULL;
+
+  drv->API.GetConfigs = _eglGetConfigs;
+  drv->API.ChooseConfig = _eglChooseConfig;
+  drv->API.GetConfigAttrib = _eglGetConfigAttrib;
+
+  drv->API.CreateContext = _eglCreateContext;
+  drv->API.DestroyContext = _eglDestroyContext;
+  drv->API.MakeCurrent = _eglMakeCurrent;
+  drv->API.QueryContext = _eglQueryContext;
+
+  drv->API.CreateWindowSurface = _eglCreateWindowSurface;
+  drv->API.CreatePixmapSurface = _eglCreatePixmapSurface;
+  drv->API.CreatePbufferSurface = _eglCreatePbufferSurface;
+  drv->API.DestroySurface = _eglDestroySurface;
+  drv->API.QuerySurface = _eglQuerySurface;
+  drv->API.SurfaceAttrib = _eglSurfaceAttrib;
+  drv->API.BindTexImage = _eglBindTexImage;
+  drv->API.ReleaseTexImage = _eglReleaseTexImage;
+  drv->API.SwapInterval = _eglSwapInterval;
+  drv->API.SwapBuffers = _eglSwapBuffers;
+  drv->API.CopyBuffers = _eglCopyBuffers;
+
+  drv->API.QueryString = _eglQueryString;
+  drv->API.WaitClient = _eglWaitClient;
+  drv->API.WaitNative = _eglWaitNative;
+}
+