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// Copyright (c) 2011 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 "webkit/plugins/ppapi/ppb_surface_3d_impl.h"
#include "base/bind.h"
#include "base/message_loop.h"
#include "gpu/command_buffer/client/gles2_implementation.h"
#include "gpu/command_buffer/common/command_buffer.h"
#include "ppapi/c/ppb_graphics_3d.h"
#include "ppapi/c/ppp_graphics_3d.h"
#include "webkit/plugins/ppapi/common.h"
#include "webkit/plugins/ppapi/plugin_module.h"
#include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
#include "webkit/plugins/ppapi/ppb_context_3d_impl.h"
#include "webkit/plugins/ppapi/resource_helper.h"
using ppapi::thunk::PPB_Surface3D_API;
namespace webkit {
namespace ppapi {
PPB_Surface3D_Impl::PPB_Surface3D_Impl(PP_Instance instance)
: Resource(instance),
bound_to_instance_(false),
swap_initiated_(false),
context_(NULL),
weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
}
PPB_Surface3D_Impl::~PPB_Surface3D_Impl() {
if (context_)
context_->BindSurfacesImpl(NULL, NULL);
}
// static
PP_Resource PPB_Surface3D_Impl::Create(PP_Instance instance,
PP_Config3D_Dev config,
const int32_t* attrib_list) {
scoped_refptr<PPB_Surface3D_Impl> surface(
new PPB_Surface3D_Impl(instance));
if (!surface->Init(config, attrib_list))
return 0;
return surface->GetReference();
}
PPB_Surface3D_API* PPB_Surface3D_Impl::AsPPB_Surface3D_API() {
return this;
}
int32_t PPB_Surface3D_Impl::SetAttrib(int32_t attribute, int32_t value) {
// TODO(alokp): Implement me.
return 0;
}
int32_t PPB_Surface3D_Impl::GetAttrib(int32_t attribute, int32_t* value) {
// TODO(alokp): Implement me.
return 0;
}
int32_t PPB_Surface3D_Impl::SwapBuffers(PP_CompletionCallback callback) {
if (!callback.func) {
// Blocking SwapBuffers isn't supported (since we have to be on the main
// thread).
return PP_ERROR_BLOCKS_MAIN_THREAD;
}
if (swap_callback_.get() && !swap_callback_->completed()) {
// Already a pending SwapBuffers that hasn't returned yet.
return PP_ERROR_INPROGRESS;
}
if (!context_)
return PP_ERROR_FAILED;
PluginModule* plugin_module = ResourceHelper::GetPluginModule(this);
if (!plugin_module)
return PP_ERROR_FAILED;
swap_callback_ = new TrackedCompletionCallback(
plugin_module->GetCallbackTracker(), pp_resource(), callback);
gpu::gles2::GLES2Implementation* impl = context_->gles2_impl();
if (impl)
context_->gles2_impl()->SwapBuffers();
context_->platform_context()->Echo(
base::Bind(&PPB_Surface3D_Impl::OnSwapBuffers,
weak_ptr_factory_.GetWeakPtr()));
// |SwapBuffers()| should not call us back synchronously, but double-check.
DCHECK(!swap_callback_->completed());
return PP_OK_COMPLETIONPENDING;
}
bool PPB_Surface3D_Impl::Init(PP_Config3D_Dev config,
const int32_t* attrib_list) {
return true;
}
bool PPB_Surface3D_Impl::BindToInstance(bool bind) {
bound_to_instance_ = bind;
return true;
}
bool PPB_Surface3D_Impl::BindToContext(PPB_Context3D_Impl* context) {
if (context == context_)
return true;
PluginInstance* plugin_instance = ResourceHelper::GetPluginInstance(this);
if (!plugin_instance)
return false;
if (!context && bound_to_instance_)
plugin_instance->BindGraphics(pp_instance(), 0);
// Unbind from the current context.
if (context && context->platform_context()) {
// Resize the backing texture to the size of the instance when it is bound.
// TODO(alokp): This should be the responsibility of plugins.
gpu::gles2::GLES2Implementation* impl = context->gles2_impl();
if (impl) {
const gfx::Size& size = plugin_instance->position().size();
impl->ResizeCHROMIUM(size.width(), size.height());
}
}
context_ = context;
return true;
}
void PPB_Surface3D_Impl::ViewInitiatedPaint() {
}
void PPB_Surface3D_Impl::ViewFlushedPaint() {
if (swap_initiated_ && swap_callback_.get() && !swap_callback_->completed()) {
// We must clear swap_callback_ before issuing the callback. It will be
// common for the plugin to issue another SwapBuffers in response to the
// callback, and we don't want to think that a callback is already pending.
swap_initiated_ = false;
scoped_refptr<TrackedCompletionCallback> callback;
callback.swap(swap_callback_);
callback->Run(PP_OK); // Will complete abortively if necessary.
}
}
unsigned int PPB_Surface3D_Impl::GetBackingTextureId() {
return context_ ? context_->platform_context()->GetBackingTextureId() : 0;
}
void PPB_Surface3D_Impl::OnSwapBuffers() {
PluginInstance* plugin_instance = ResourceHelper::GetPluginInstance(this);
if (!plugin_instance)
return;
if (bound_to_instance_ && plugin_instance) {
plugin_instance->CommitBackingTexture();
swap_initiated_ = true;
} else if (swap_callback_.get() && !swap_callback_->completed()) {
// If we're off-screen, no need to trigger compositing so run the callback
// immediately.
swap_initiated_ = false;
scoped_refptr<TrackedCompletionCallback> callback;
callback.swap(swap_callback_);
callback->Run(PP_OK); // Will complete abortively if necessary.
}
}
void PPB_Surface3D_Impl::OnContextLost() {
PluginInstance* plugin_instance = ResourceHelper::GetPluginInstance(this);
if (bound_to_instance_ && plugin_instance)
plugin_instance->BindGraphics(pp_instance(), 0);
// Send context lost to plugin. This may have been caused by a PPAPI call, so
// avoid re-entering.
MessageLoop::current()->PostTask(FROM_HERE, NewRunnableMethod(
this, &PPB_Surface3D_Impl::SendContextLost));
}
void PPB_Surface3D_Impl::SendContextLost() {
PluginInstance* plugin_instance = ResourceHelper::GetPluginInstance(this);
// By the time we run this, the instance may have been deleted, or in the
// process of being deleted. Even in the latter case, we don't want to send a
// callback after DidDestroy.
if (!plugin_instance || !plugin_instance->container())
return;
const PPP_Graphics3D* ppp_graphics_3d =
static_cast<const PPP_Graphics3D*>(
plugin_instance->module()->GetPluginInterface(
PPP_GRAPHICS_3D_INTERFACE));
if (ppp_graphics_3d)
ppp_graphics_3d->Graphics3DContextLost(pp_instance());
}
} // namespace ppapi
} // namespace webkit
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