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// Copyright (c) 2010 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 <GLES2/gl2.h>
#include "gpu/demos/framework/demo.h"
#include "gpu/demos/framework/demo_factory.h"
#include "ppapi/cpp/completion_callback.h"
#include "ppapi/cpp/instance.h"
#include "ppapi/cpp/module.h"
#include "ppapi/cpp/rect.h"
#include "ppapi/cpp/size.h"
#include "ppapi/cpp/dev/context_3d_dev.h"
#include "ppapi/cpp/dev/graphics_3d_dev.h"
#include "ppapi/cpp/dev/surface_3d_dev.h"
#include "ppapi/lib/gl/gles2/gl2ext_ppapi.h"
namespace gpu {
namespace demos {
class PluginInstance : public pp::Instance {
public:
PluginInstance(PP_Instance instance, pp::Module* module)
: pp::Instance(instance),
module_(module),
demo_(CreateDemo()) {
// Set the callback object outside of the initializer list to avoid a
// compiler warning about using "this" in an initializer list.
callback_factory_.Initialize(this);
}
~PluginInstance() {
if (!context_.is_null()) {
glSetCurrentContextPPAPI(context_.pp_resource());
delete demo_;
glSetCurrentContextPPAPI(0);
}
}
virtual void DidChangeView(const pp::Rect& position,
const pp::Rect& /*clip*/) {
if (size_ == position.size())
return;
size_ = position.size();
demo_->InitWindowSize(size_.width(), size_.height());
if (context_.is_null()) {
context_ = pp::Context3D_Dev(*this, 0, pp::Context3D_Dev(), NULL);
if (context_.is_null())
return;
glSetCurrentContextPPAPI(context_.pp_resource());
demo_->InitGL();
glSetCurrentContextPPAPI(0);
} else {
// Need to recreate surface. Unbind existing surface.
pp::Instance::BindGraphics(pp::Surface3D_Dev());
context_.BindSurfaces(pp::Surface3D_Dev(), pp::Surface3D_Dev());
}
surface_ = pp::Surface3D_Dev(*this, 0, NULL);
context_.BindSurfaces(surface_, surface_);
pp::Instance::BindGraphics(surface_);
if (demo_->IsAnimated())
Animate(0);
else
Paint();
}
void Paint() {
glSetCurrentContextPPAPI(context_.pp_resource());
demo_->Draw();
surface_.SwapBuffers();
glSetCurrentContextPPAPI(0);
}
private:
void Animate(int delay) {
Paint();
module_->core()->CallOnMainThread(delay,
callback_factory_.NewCallback(&PluginInstance::Animate), delay);
}
pp::Module* module_;
Demo* demo_;
pp::Context3D_Dev context_;
pp::Surface3D_Dev surface_;
pp::Size size_;
pp::CompletionCallbackFactory<PluginInstance> callback_factory_;
};
class PluginModule : public pp::Module {
public:
PluginModule() {}
~PluginModule() {
glTerminatePPAPI();
}
virtual bool Init() {
return glInitializePPAPI(get_browser_interface()) == GL_TRUE ? true : false;
}
virtual pp::Instance* CreateInstance(PP_Instance instance) {
return new PluginInstance(instance, this);
}
};
} // namespace demos
} // namespace gpu
namespace pp {
Module* CreateModule() {
return new gpu::demos::PluginModule();
}
} // namespace pp
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