Convert Ozone GBM to use GLOzone.

ui/ozone/platform/drm/gpu/gbm_surface_factory.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/platform/drm/gpu/gbm_surface_factory.h"
 
 #include <gbm.h>
 
 #include <utility>
 
 #include "base/files/file_path.h"
 #include "base/memory/ptr_util.h"
 #include "build/build_config.h"
 #include "third_party/khronos/EGL/egl.h"
 #include "ui/gfx/buffer_format_util.h"
 #include "ui/gl/gl_surface_egl.h"
 #include "ui/ozone/common/egl_util.h"
+#include "ui/ozone/common/gl_ozone_egl.h"
 #include "ui/ozone/platform/drm/common/drm_util.h"
 #include "ui/ozone/platform/drm/gpu/drm_thread_proxy.h"
 #include "ui/ozone/platform/drm/gpu/drm_window_proxy.h"
 #include "ui/ozone/platform/drm/gpu/gbm_buffer.h"
 #include "ui/ozone/platform/drm/gpu/gbm_surface.h"
 #include "ui/ozone/platform/drm/gpu/gbm_surfaceless.h"
 #include "ui/ozone/platform/drm/gpu/proxy_helpers.h"
 #include "ui/ozone/platform/drm/gpu/screen_manager.h"
 #include "ui/ozone/public/native_pixmap.h"
 #include "ui/ozone/public/surface_ozone_canvas.h"
 
 namespace ui {
 
+namespace {
+
+class GLOzoneEGLGbm : public GLOzoneEGL {
+ public:
+  GLOzoneEGLGbm(GbmSurfaceFactory* surface_factory, DrmThreadProxy* drm_thread)
+      : surface_factory_(surface_factory), drm_thread_(drm_thread) {}
+  ~GLOzoneEGLGbm() override {}
+
+  scoped_refptr<gl::GLSurface> CreateViewGLSurface(
+      gfx::AcceleratedWidget window) override {
+    return gl::InitializeGLSurface(new GbmSurface(
+        surface_factory_, drm_thread_->CreateDrmWindowProxy(window), window));
+  }
+
+  scoped_refptr<gl::GLSurface> CreateSurfacelessViewGLSurface(
+      gfx::AcceleratedWidget window) override {
+    return gl::InitializeGLSurface(new GbmSurfaceless(
+        surface_factory_, drm_thread_->CreateDrmWindowProxy(window), window));
+  }
+
+  scoped_refptr<gl::GLSurface> CreateOffscreenGLSurface(
+      const gfx::Size& size) override {
+    DCHECK_EQ(size.width(), 0);
+    DCHECK_EQ(size.height(), 0);
+    return gl::InitializeGLSurface(new gl::SurfacelessEGL(size));
+  }
+
+ protected:
+  intptr_t GetNativeDisplay() override { return EGL_DEFAULT_DISPLAY; }
+
+  bool LoadGLES2Bindings() override { return LoadDefaultEGLGLES2Bindings(); }
+
+ private:
+  GbmSurfaceFactory* surface_factory_;
+  DrmThreadProxy* drm_thread_;
+
+  DISALLOW_COPY_AND_ASSIGN(GLOzoneEGLGbm);
+};
+
+}  // namespace
+
 GbmSurfaceFactory::GbmSurfaceFactory(DrmThreadProxy* drm_thread)
-    : drm_thread_(drm_thread) {}
+    : egl_implementation_(new GLOzoneEGLGbm(this, drm_thread)),
+      drm_thread_(drm_thread) {}
 
 GbmSurfaceFactory::~GbmSurfaceFactory() {
   DCHECK(thread_checker_.CalledOnValidThread());
 }
 
 void GbmSurfaceFactory::RegisterSurface(gfx::AcceleratedWidget widget,
                                         GbmSurfaceless* surface) {
   DCHECK(thread_checker_.CalledOnValidThread());
   widget_to_surface_map_.insert(std::make_pair(widget, surface));
 }
 
 void GbmSurfaceFactory::UnregisterSurface(gfx::AcceleratedWidget widget) {
   DCHECK(thread_checker_.CalledOnValidThread());
   widget_to_surface_map_.erase(widget);
 }
 
 GbmSurfaceless* GbmSurfaceFactory::GetSurface(
     gfx::AcceleratedWidget widget) const {
   DCHECK(thread_checker_.CalledOnValidThread());
   auto it = widget_to_surface_map_.find(widget);
   DCHECK(it != widget_to_surface_map_.end());
   return it->second;
 }
 
-scoped_refptr<gl::GLSurface> GbmSurfaceFactory::CreateViewGLSurface(
-    gl::GLImplementation implementation,
-    gfx::AcceleratedWidget widget) {
+std::vector<gl::GLImplementation>
+GbmSurfaceFactory::GetAllowedGLImplementations() {
   DCHECK(thread_checker_.CalledOnValidThread());
-
-  if (implementation != gl::kGLImplementationEGLGLES2) {
-    NOTREACHED();
-    return nullptr;
-  }
-
-  return gl::InitializeGLSurface(
-      new GbmSurface(this, drm_thread_->CreateDrmWindowProxy(widget), widget));
+  std::vector<gl::GLImplementation> impls;
+  impls.push_back(gl::kGLImplementationEGLGLES2);
+  impls.push_back(gl::kGLImplementationOSMesaGL);
+  return impls;
 }
 
-scoped_refptr<gl::GLSurface> GbmSurfaceFactory::CreateSurfacelessViewGLSurface(
-    gl::GLImplementation implementation,
-    gfx::AcceleratedWidget widget) {
+GLOzone* GbmSurfaceFactory::GetGLOzone(gl::GLImplementation implementation) {
   DCHECK(thread_checker_.CalledOnValidThread());
-
-  if (implementation != gl::kGLImplementationEGLGLES2) {
-    NOTREACHED();
-    return nullptr;
+  switch (implementation) {
+    case gl::kGLImplementationEGLGLES2:
+      return egl_implementation_.get();
+    default:
+      return nullptr;
   }
-
-  return gl::InitializeGLSurface(new GbmSurfaceless(
-      this, drm_thread_->CreateDrmWindowProxy(widget), widget));
-}
-
-scoped_refptr<gl::GLSurface> GbmSurfaceFactory::CreateOffscreenGLSurface(
-    gl::GLImplementation implementation,
-    const gfx::Size& size) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-
-  if (implementation != gl::kGLImplementationEGLGLES2) {
-    NOTREACHED();
-    return nullptr;
-  }
-
-  DCHECK_EQ(size.width(), 0);
-  DCHECK_EQ(size.height(), 0);
-
-  return gl::InitializeGLSurface(new gl::SurfacelessEGL(size));
-}
-
-intptr_t GbmSurfaceFactory::GetNativeDisplay() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  return EGL_DEFAULT_DISPLAY;
-}
-
-bool GbmSurfaceFactory::LoadEGLGLES2Bindings() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  return LoadDefaultEGLGLES2Bindings();
 }
 
 std::unique_ptr<SurfaceOzoneCanvas> GbmSurfaceFactory::CreateCanvasForWidget(
     gfx::AcceleratedWidget widget) {
   DCHECK(thread_checker_.CalledOnValidThread());
   LOG(ERROR) << "Software rendering mode is not supported with GBM platform";
   return nullptr;
 }
 
 std::vector<gfx::BufferFormat> GbmSurfaceFactory::GetScanoutFormats(
@@ skipping 44 matching lines @@
   }
 
   scoped_refptr<GbmBuffer> buffer = drm_thread_->CreateBufferFromFds(
       widget, size, format, std::move(scoped_fds), planes);
   if (!buffer)
     return nullptr;
   return make_scoped_refptr(new GbmPixmap(this, buffer));
 }
 
 }  // namespace ui