Ozone integration.

ui/ozone/demo/gl_renderer.cc

+// Copyright 2014 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/demo/gl_renderer.h"
+
+#include "base/location.h"
+#include "base/thread_task_runner_handle.h"
+#include "ui/gl/gl_bindings.h"
+#include "ui/gl/gl_context.h"
+#include "ui/gl/gl_surface.h"
+
+namespace ui {
+
+GlRenderer::GlRenderer(gfx::AcceleratedWidget widget, const gfx::Size& size)
+    : RendererBase(widget, size), weak_ptr_factory_(this) {
+}
+
+GlRenderer::~GlRenderer() {
+}
+
+bool GlRenderer::Initialize() {
+  surface_ = CreateSurface();
+  if (!surface_.get()) {
+    LOG(ERROR) << "Failed to create GL surface";
+    return false;
+  }
+
+  context_ = gfx::GLContext::CreateGLContext(NULL, surface_.get(),
+                                             gfx::PreferIntegratedGpu);
+  if (!context_.get()) {
+    LOG(ERROR) << "Failed to create GL context";
+    return false;
+  }
+
+  if (!surface_->Resize(size_)) {
+    LOG(ERROR) << "Failed to resize GL surface";
+    return false;
+  }
+
+  if (!context_->MakeCurrent(surface_.get())) {
+    LOG(ERROR) << "Failed to make GL context current";
+    return false;
+  }
+
+  PostRenderFrameTask(gfx::SwapResult::SWAP_ACK);
+  return true;
+}
+
+void GlRenderer::RenderFrame() {
+  float fraction = NextFraction();
+
+  context_->MakeCurrent(surface_.get());
+
+  glViewport(0, 0, size_.width(), size_.height());
+  glClearColor(1 - fraction, fraction, 0.0, 1.0);
+  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+  if (!surface_->SwapBuffersAsync(base::Bind(&GlRenderer::PostRenderFrameTask,
+                                             weak_ptr_factory_.GetWeakPtr())))
+    LOG(FATAL) << "Failed to swap buffers";
+}
+
+void GlRenderer::PostRenderFrameTask(gfx::SwapResult result) {
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
+      FROM_HERE,
+      base::Bind(&GlRenderer::RenderFrame, weak_ptr_factory_.GetWeakPtr()));
+}
+
+scoped_refptr<gfx::GLSurface> GlRenderer::CreateSurface() {
+  gfx::SurfaceConfiguration config;
+  return gfx::GLSurface::CreateViewGLSurface(widget_, config);
+}
+
+}  // namespace ui