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   if (g_driver_wgl.fn.wglGetExtensionsStringARBFn) {
  33     str = g_driver_wgl.fn.wglGetExtensionsStringARBFn(
  34         GLSurfaceWGL::GetDisplayDC());
  35   } else if (g_driver_wgl.fn.wglGetExtensionsStringEXTFn) {
  36     str = g_driver_wgl.fn.wglGetExtensionsStringEXTFn();
  37   }
  38   return str ? std::string(str) : "";
  39 }
  40 #endif
  41
  42 #if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || defined(USE_OZONE)
  43 std::string DriverEGL::GetPlatformExtensions() {
  44   EGLDisplay display = GLSurfaceEGL::InitializeDisplay();
  45   if (display == EGL_NO_DISPLAY)
  46     return "";
  47   const char* str = eglQueryString(display, EGL_EXTENSIONS);
  48   return str ? std::string(str) : "";
  49 }
  50
  51 // static
  52 std::string DriverEGL::GetClientExtensions() {
  53   const char* str = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
  54   return str ? std::string(str) : "";
  55 }
  56 #endif
  57
  58 #if defined(USE_X11)
  59 std::string DriverGLX::GetPlatformExtensions() {
  60   DCHECK(g_driver_glx.fn.glXQueryExtensionsStringFn);
  61   const char* str =
  62       g_driver_glx.fn.glXQueryExtensionsStringFn(gfx::GetXDisplay(), 0);
  63   return str ? std::string(str) : "";
  64 }
  65 #endif
  66
  67 }  // namespace gfx