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// 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/gl/gl_surface.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gl/gl_context.h"
#include "ui/gl/gl_implementation.h"
#include "ui/gl/gl_surface_egl.h"
#include "ui/gl/gl_surface_osmesa.h"
#include "ui/gl/gl_surface_stub.h"
#include "ui/gl/scoped_make_current.h"
#include "ui/ozone/public/surface_factory_ozone.h"
#include "ui/ozone/public/surface_ozone_egl.h"
namespace gfx {
namespace {
// A thin wrapper around GLSurfaceEGL that owns the EGLNativeWindow
class GL_EXPORT GLSurfaceOzoneEGL : public NativeViewGLSurfaceEGL {
public:
GLSurfaceOzoneEGL(scoped_ptr<ui::SurfaceOzoneEGL> ozone_surface,
AcceleratedWidget widget)
: NativeViewGLSurfaceEGL(ozone_surface->GetNativeWindow()),
ozone_surface_(ozone_surface.Pass()),
widget_(widget) {}
virtual bool Resize(const gfx::Size& size) OVERRIDE {
if (!ozone_surface_->ResizeNativeWindow(size)) {
if (!ReinitializeNativeSurface() ||
!ozone_surface_->ResizeNativeWindow(size))
return false;
}
return NativeViewGLSurfaceEGL::Resize(size);
}
virtual bool SwapBuffers() OVERRIDE {
if (!NativeViewGLSurfaceEGL::SwapBuffers())
return false;
return ozone_surface_->OnSwapBuffers();
}
private:
virtual ~GLSurfaceOzoneEGL() {
Destroy(); // EGL surface must be destroyed before SurfaceOzone
}
bool ReinitializeNativeSurface() {
scoped_ptr<ui::ScopedMakeCurrent> scoped_make_current;
GLContext* current_context = GLContext::GetCurrent();
bool was_current =
current_context && current_context->IsCurrent(this);
if (was_current) {
scoped_make_current.reset(
new ui::ScopedMakeCurrent(current_context, this));
}
Destroy();
ozone_surface_ =
ui::SurfaceFactoryOzone::GetInstance()->CreateEGLSurfaceForWidget(
widget_).Pass();
if (!ozone_surface_) {
LOG(ERROR) << "Failed to create native surface.";
return false;
}
window_ = ozone_surface_->GetNativeWindow();
scoped_ptr<VSyncProvider> vsync_provider =
ozone_surface_->CreateVSyncProvider();
if (!Initialize(vsync_provider.Pass())) {
LOG(ERROR) << "Failed to initialize.";
return false;
}
return true;
}
// The native surface. Deleting this is allowed to free the EGLNativeWindow.
scoped_ptr<ui::SurfaceOzoneEGL> ozone_surface_;
AcceleratedWidget widget_;
DISALLOW_COPY_AND_ASSIGN(GLSurfaceOzoneEGL);
};
} // namespace
// static
bool GLSurface::InitializeOneOffInternal() {
switch (GetGLImplementation()) {
case kGLImplementationEGLGLES2:
if (!GLSurfaceEGL::InitializeOneOff()) {
LOG(ERROR) << "GLSurfaceEGL::InitializeOneOff failed.";
return false;
}
return true;
case kGLImplementationOSMesaGL:
case kGLImplementationMockGL:
return true;
default:
return false;
}
}
// static
scoped_refptr<GLSurface> GLSurface::CreateViewGLSurface(
gfx::AcceleratedWidget window) {
if (GetGLImplementation() == kGLImplementationOSMesaGL) {
scoped_refptr<GLSurface> surface(new GLSurfaceOSMesaHeadless());
if (!surface->Initialize())
return NULL;
return surface;
}
DCHECK(GetGLImplementation() == kGLImplementationEGLGLES2);
if (window != kNullAcceleratedWidget) {
scoped_ptr<ui::SurfaceOzoneEGL> surface_ozone =
ui::SurfaceFactoryOzone::GetInstance()->CreateEGLSurfaceForWidget(
window);
if (!surface_ozone)
return NULL;
scoped_ptr<VSyncProvider> vsync_provider =
surface_ozone->CreateVSyncProvider();
scoped_refptr<GLSurfaceOzoneEGL> surface =
new GLSurfaceOzoneEGL(surface_ozone.Pass(), window);
if (!surface->Initialize(vsync_provider.Pass()))
return NULL;
return surface;
} else {
scoped_refptr<GLSurface> surface = new GLSurfaceStub();
if (surface->Initialize())
return surface;
}
return NULL;
}
// static
scoped_refptr<GLSurface> GLSurface::CreateOffscreenGLSurface(
const gfx::Size& size) {
switch (GetGLImplementation()) {
case kGLImplementationOSMesaGL: {
scoped_refptr<GLSurface> surface(new GLSurfaceOSMesa(1, size));
if (!surface->Initialize())
return NULL;
return surface;
}
case kGLImplementationEGLGLES2: {
scoped_refptr<GLSurface> surface;
if (GLSurfaceEGL::IsEGLSurfacelessContextSupported() &&
(size.width() == 0 && size.height() == 0)) {
surface = new SurfacelessEGL(size);
} else
surface = new PbufferGLSurfaceEGL(size);
if (!surface->Initialize())
return NULL;
return surface;
}
default:
NOTREACHED();
return NULL;
}
}
EGLNativeDisplayType GetPlatformDefaultEGLNativeDisplay() {
return ui::SurfaceFactoryOzone::GetInstance()->GetNativeDisplay();
}
} // namespace gfx
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