Implement GLX for Ozone X11.

ui/ozone/platform/x11/gl_ozone_glx.cc

+// Copyright 2016 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 "ui/ozone/platform/x11/gl_ozone_glx.h"
+
+#include "base/command_line.h"
+#include "ui/gl/gl_context.h"
+#include "ui/gl/gl_context_glx.h"
+#include "ui/gl/gl_gl_api_implementation.h"
+#include "ui/gl/gl_glx_api_implementation.h"
+#include "ui/ozone/platform/x11/gl_surface_glx_ozone.h"
+
+namespace ui {
+
+namespace {
+
+#if defined(OS_OPENBSD)
+const char kGLLibraryName[] = "libGL.so";
+#else
+const char kGLLibraryName[] = "libGL.so.1";
+#endif
+
+}  // namespace
+
+bool GLOzoneGLX::InitializeGLOneOffPlatform() {
+  if (!gl::GLSurfaceGLX::InitializeOneOff()) {
+    LOG(ERROR) << "GLSurfaceGLX::InitializeOneOff failed.";
+    return false;
+  }
+  return true;
+}
+
+bool GLOzoneGLX::InitializeStaticGLBindings(
+    gl::GLImplementation implementation) {
+  base::NativeLibrary library = nullptr;
+  const base::CommandLine* command_line =
+      base::CommandLine::ForCurrentProcess();
+
+  if (command_line->HasSwitch(switches::kTestGLLib))
+    library = gl::LoadLibraryAndPrintError(
+        command_line->GetSwitchValueASCII(switches::kTestGLLib).c_str());
+
+  if (!library)
+    library = gl::LoadLibraryAndPrintError(kGLLibraryName);
+
+  if (!library)
+    return false;
+
+  gl::GLGetProcAddressProc get_proc_address =
+      reinterpret_cast<gl::GLGetProcAddressProc>(
+          base::GetFunctionPointerFromNativeLibrary(library,
+                                                    "glXGetProcAddress"));
+  if (!get_proc_address) {
+    LOG(ERROR) << "glxGetProcAddress not found.";
+    base::UnloadNativeLibrary(library);
+    return false;
+  }
+
+  gl::SetGLGetProcAddressProc(get_proc_address);
+  gl::AddGLNativeLibrary(library);
+  gl::SetGLImplementation(gl::kGLImplementationDesktopGL);
+
+  gl::InitializeStaticGLBindingsGL();
+  gl::InitializeStaticGLBindingsGLX();
+
+  return true;
+}
+
+void GLOzoneGLX::InitializeDebugGLBindings() {
+  gl::InitializeDebugGLBindingsGL();
+  gl::InitializeDebugGLBindingsGLX();
+}
+
+void GLOzoneGLX::ClearGLBindings() {
+  gl::ClearGLBindingsGL();
+  gl::ClearGLBindingsGLX();
+}
+
+bool GLOzoneGLX::GetGLWindowSystemBindingInfo(
+    gl::GLWindowSystemBindingInfo* info) {
+  return gl::GetGLWindowSystemBindingInfoGLX(info);
+}
+
+scoped_refptr<gl::GLContext> GLOzoneGLX::CreateGLContext(
+    gl::GLShareGroup* share_group,
+    gl::GLSurface* compatible_surface,
+    gl::GpuPreference gpu_preference) {
+  return gl::InitializeGLContext(new gl::GLContextGLX(share_group),
+                                 compatible_surface, gpu_preference);
+}
+
+scoped_refptr<gl::GLSurface> GLOzoneGLX::CreateViewGLSurface(
+    gfx::AcceleratedWidget window) {
+  return gl::InitializeGLSurface(new GLSurfaceGLXOzone(window));
+}
+
+scoped_refptr<gl::GLSurface> GLOzoneGLX::CreateSurfacelessViewGLSurface(
+    gfx::AcceleratedWidget window) {
+  return nullptr;
+}
+
+scoped_refptr<gl::GLSurface> GLOzoneGLX::CreateOffscreenGLSurface(
+    const gfx::Size& size) {
+  return gl::InitializeGLSurface(new gl::UnmappedNativeViewGLSurfaceGLX(size));
+}
+
+}  // namespace ui