Rationalize linux vs x11 in ui

gpu/gles2_conform_support/native/egl_native_linux.cc

-// Copyright (c) 2012 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 <EGL/egl.h>
-#include <EGL/eglext.h>
-#include <gdk/gdkx.h>
-#include <gtk/gtk.h>
-
-extern "C" {
-#if defined(GLES2_CONFORM_SUPPORT_ONLY)
-#include "gpu/gles2_conform_support/gtf/gtf_stubs.h"
-#else
-#include "third_party/gles2_conform/GTF_ES/glsl/GTF/Source/eglNative.h"
-#endif
-
-
-GTFbool GTFNativeCreateDisplay(EGLNativeDisplayType *pNativeDisplay) {
-  int argc = 0;
-  char **argv = NULL;
-  gtk_init(&argc, &argv);
-  *pNativeDisplay = GDK_DISPLAY();;
-  return *pNativeDisplay ? GTFtrue : GTFfalse;
-}
-
-void GTFNativeDestroyDisplay(EGLNativeDisplayType nativeDisplay) {
-  gtk_exit(0);
-}
-
-GTFbool GTFNativeCreateWindow(EGLNativeDisplayType nativeDisplay,
-                              EGLDisplay eglDisplay, EGLConfig eglConfig,
-                              const char* title, int width, int height,
-                              EGLNativeWindowType *pNativeWindow) {
-#ifdef CHROMEOS_GLES2_CONFORMANCE
-  // Due to the behavior of ChromeOS window manager, which always resize the
-  // top level window etc, we had to create a popup window.
-  GtkWidget* hwnd = gtk_window_new(GTK_WINDOW_POPUP);
-#else
-  GtkWidget* hwnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
-#endif
-
-  gtk_window_set_title(GTK_WINDOW(hwnd), title);
-  gtk_window_set_default_size(GTK_WINDOW(hwnd), width, height);
-  gtk_widget_set_double_buffered(hwnd, FALSE);
-  gtk_widget_set_app_paintable(hwnd, TRUE);
-
-  // We had to enter gtk main loop to realize the window on ChromeOS.
-  gtk_widget_show_now(hwnd);
-
-  *pNativeWindow = GDK_WINDOW_XWINDOW(hwnd->window);
-
-  return GTFtrue;
-}
-
-void GTFNativeDestroyWindow(EGLNativeDisplayType nativeDisplay,
-                            EGLNativeWindowType nativeWindow) {
-  GdkWindow* window = gdk_window_lookup(nativeWindow);
-  gpointer widget = NULL;
-  gdk_window_get_user_data(window, &widget);
-  gtk_widget_destroy(GTK_WIDGET(widget));
-}
-
-EGLImageKHR GTFCreateEGLImage(int width, int height,
-                              GLenum format, GLenum type) {
-  PFNEGLCREATEIMAGEKHRPROC egl_create_image_khr_;
-  egl_create_image_khr_ = reinterpret_cast<PFNEGLCREATEIMAGEKHRPROC>
-                            (eglGetProcAddress("eglCreateImageKHR"));
-
-  static const EGLint attrib[] = {
-    EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
-    EGL_GL_TEXTURE_LEVEL_KHR, 0,
-    EGL_NONE
-  };
-
-  if (format != GL_RGBA && format != GL_RGB)
-    return static_cast<EGLImageKHR>(NULL);
-
-  if (type != GL_UNSIGNED_BYTE)
-    return static_cast<EGLImageKHR>(NULL);
-
-  GLuint texture;
-  glGenTextures(1, &texture);
-  glBindTexture(GL_TEXTURE_2D, texture);
-  glTexImage2D(GL_TEXTURE_2D,
-               0,
-               format,
-               width,
-               height,
-               0,
-               format,
-               type,
-               NULL);
-
-  // Disable mip-maps because we do not require it.
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-
-  if(glGetError() != GL_NO_ERROR)
-    return static_cast<EGLImageKHR>(NULL);
-
-  EGLImageKHR egl_image =
-      egl_create_image_khr_(eglGetCurrentDisplay(),
-                            eglGetCurrentContext(),
-                            EGL_GL_TEXTURE_2D_KHR,
-                            reinterpret_cast<EGLClientBuffer>(texture),
-                            attrib);
-
-  if (eglGetError() == EGL_SUCCESS)
-    return egl_image;
-  else
-    return static_cast<EGLImageKHR>(NULL);
-}
-
-void GTFDestroyEGLImage(EGLImageKHR image) {
-  PFNEGLDESTROYIMAGEKHRPROC egl_destroy_image_khr_;
-  egl_destroy_image_khr_ = reinterpret_cast<PFNEGLDESTROYIMAGEKHRPROC>
-                             (eglGetProcAddress("eglDestroyImageKHR"));
-
-  egl_destroy_image_khr_(eglGetCurrentDisplay(), image);
-}
-
-}  // extern "C"
-