ui/gl/gl_bindings.cc

   1 // Copyright 2014 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 #if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || defined(USE_OZONE)
   6 #include <EGL/egl.h>
   7 #endif
   8
   9 #include "ui/gl/gl_bindings.h"
  10
  11 #if defined(USE_X11)
  12 #include "ui/gfx/x/x11_types.h"
  13 #endif
  14
  15 #if defined(OS_WIN)
  16 #include "ui/gl/gl_surface_wgl.h"
  17 #endif
  18
  19 #if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || defined(USE_OZONE)
  20 #include "ui/gl/gl_surface_egl.h"
  21 #endif
  22
  23 namespace gfx {
  24
  25 std::string DriverOSMESA::GetPlatformExtensions() {
  26   return "";
  27 }
  28
  29 #if defined(OS_WIN)
  30 std::string DriverWGL::GetPlatformExtensions() {
  31   const char* str = nullptr;
  32   str = wglGetExtensionsStringARB(GLSurfaceWGL::GetDisplayDC());
  33   if (str)
  34     return str;
  35   return wglGetExtensionsStringEXT();
  36 }
  37 #endif
  38
  39 #if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || defined(USE_OZONE)
  40 std::string DriverEGL::GetPlatformExtensions() {
  41   EGLDisplay display = GLSurfaceEGL::InitializeDisplay();
  42   if (display == EGL_NO_DISPLAY)
  43     return "";
  44   const char* str = eglQueryString(display, EGL_EXTENSIONS);
  45   return str ? std::string(str) : "";
  46 }
  47
  48 // static
  49 std::string DriverEGL::GetClientExtensions() {
  50   const char* str = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
  51   return str ? std::string(str) : "";
  52 }
  53 #endif
  54
  55 #if defined(USE_X11)
  56 std::string DriverGLX::GetPlatformExtensions() {
  57   const char* str = glXQueryExtensionsString(gfx::GetXDisplay(), 0);
  58   return str ? std::string(str) : "";
  59 }
  60 #endif
  61
  62 }  // namespace gfx