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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "ui/gl/gl_egl_api_implementation.h"
      6 #include "ui/gl/gl_implementation.h"
      7 
      8 namespace gfx {
      9 
     10 RealEGLApi* g_real_egl;
     11 
     12 void InitializeStaticGLBindingsEGL() {
     13   g_driver_egl.InitializeStaticBindings();
     14   if (!g_real_egl) {
     15     g_real_egl = new RealEGLApi();
     16   }
     17   g_real_egl->Initialize(&g_driver_egl);
     18   g_current_egl_context = g_real_egl;
     19 }
     20 
     21 void InitializeDynamicGLBindingsEGL(GLContext* context) {
     22   g_driver_egl.InitializeDynamicBindings(context);
     23 }
     24 
     25 void InitializeDebugGLBindingsEGL() {
     26   g_driver_egl.InitializeDebugBindings();
     27 }
     28 
     29 void ClearGLBindingsEGL() {
     30   if (g_real_egl) {
     31     delete g_real_egl;
     32     g_real_egl = NULL;
     33   }
     34   g_current_egl_context = NULL;
     35   g_driver_egl.ClearBindings();
     36 }
     37 
     38 EGLApi::EGLApi() {
     39 }
     40 
     41 EGLApi::~EGLApi() {
     42 }
     43 
     44 EGLApiBase::EGLApiBase()
     45     : driver_(NULL) {
     46 }
     47 
     48 EGLApiBase::~EGLApiBase() {
     49 }
     50 
     51 void EGLApiBase::InitializeBase(DriverEGL* driver) {
     52   driver_ = driver;
     53 }
     54 
     55 RealEGLApi::RealEGLApi() {
     56 }
     57 
     58 RealEGLApi::~RealEGLApi() {
     59 }
     60 
     61 void RealEGLApi::Initialize(DriverEGL* driver) {
     62   InitializeBase(driver);
     63 }
     64 
     65 TraceEGLApi::~TraceEGLApi() {
     66 }
     67 
     68 bool GetGLWindowSystemBindingInfoEGL(GLWindowSystemBindingInfo* info) {
     69   EGLDisplay display = eglGetCurrentDisplay();
     70   const char* vendor = eglQueryString(display, EGL_VENDOR);
     71   const char* version = eglQueryString(display, EGL_VERSION);
     72   const char* extensions = eglQueryString(display, EGL_EXTENSIONS);
     73   *info = GLWindowSystemBindingInfo();
     74   if (vendor)
     75     info->vendor = vendor;
     76   if (version)
     77     info->version = version;
     78   if (extensions)
     79     info->extensions = extensions;
     80   return true;
     81 }
     82 
     83 }  // namespace gfx
     84 
     85 
     86