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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 "gpu/demos/framework/plugin.h"
#include "base/logging.h"
#include "gpu/demos/framework/demo_factory.h"
using gpu::demos::Plugin;
namespace {
const int32 kCommandBufferSize = 1024 * 1024;
NPExtensions* g_extensions = NULL;
// Plugin class functions.
NPObject* PluginAllocate(NPP npp, NPClass* the_class) {
Plugin* plugin = new Plugin(npp);
return plugin;
}
void PluginDeallocate(NPObject* header) {
Plugin* plugin = static_cast<Plugin*>(header);
delete plugin;
}
void PluginInvalidate(NPObject* obj) {
}
bool PluginHasMethod(NPObject* obj, NPIdentifier name) {
return false;
}
bool PluginInvoke(NPObject* header,
NPIdentifier name,
const NPVariant* args, uint32 arg_count,
NPVariant* result) {
return false;
}
bool PluginInvokeDefault(NPObject* obj,
const NPVariant* args, uint32 arg_count,
NPVariant* result) {
VOID_TO_NPVARIANT(*result);
return true;
}
bool PluginHasProperty(NPObject* obj, NPIdentifier name) {
return false;
}
bool PluginGetProperty(NPObject* obj,
NPIdentifier name,
NPVariant* result) {
return false;
}
bool PluginSetProperty(NPObject* obj,
NPIdentifier name,
const NPVariant* variant) {
return false;
}
NPClass plugin_class = {
NP_CLASS_STRUCT_VERSION,
PluginAllocate,
PluginDeallocate,
PluginInvalidate,
PluginHasMethod,
PluginInvoke,
PluginInvokeDefault,
PluginHasProperty,
PluginGetProperty,
PluginSetProperty,
};
void TickCallback(void* data) {
reinterpret_cast<gpu::demos::Plugin*>(data)->Tick();
}
void RepaintCallback(NPP npp, NPDeviceContext3D* /* context */) {
Plugin* plugin = static_cast<Plugin*>(npp->pdata);
plugin->Paint();
}
}
namespace gpu {
namespace demos {
NPNetscapeFuncs* g_browser;
Plugin::Plugin(NPP npp)
: npp_(npp),
device3d_(NULL),
pgl_context_(NULL),
demo_(CreateDemo()) {
memset(&context3d_, 0, sizeof(context3d_));
}
Plugin::~Plugin() {
// Destroy demo while GL context is current and before it is destroyed.
pglMakeCurrent(pgl_context_);
demo_.reset();
pglMakeCurrent(PGL_NO_CONTEXT);
DestroyContext();
}
NPClass* Plugin::GetPluginClass() {
return &plugin_class;
}
void Plugin::New(NPMIMEType pluginType,
int16 argc, char* argn[], char* argv[]) {
if (!g_extensions) {
g_browser->getvalue(npp_, NPNVPepperExtensions, &g_extensions);
CHECK(g_extensions);
}
device3d_ = g_extensions->acquireDevice(npp_, NPPepper3DDevice);
CHECK(device3d_);
}
void Plugin::SetWindow(const NPWindow& window) {
demo_->InitWindowSize(window.width, window.height);
if (!pgl_context_) {
CreateContext();
// Schedule first call to Tick.
if (demo_->IsAnimated())
g_browser->pluginthreadasynccall(npp_, TickCallback, this);
}
}
int32 Plugin::HandleEvent(const NPPepperEvent& event) {
return 0;
}
void Plugin::Tick() {
Paint();
// Schedule another call to Tick.
g_browser->pluginthreadasynccall(npp_, TickCallback, this);
}
void Plugin::Paint() {
if (!pglMakeCurrent(pgl_context_) && pglGetError() == PGL_CONTEXT_LOST) {
DestroyContext();
CreateContext();
pglMakeCurrent(pgl_context_);
}
demo_->Draw();
pglSwapBuffers();
pglMakeCurrent(PGL_NO_CONTEXT);
}
void Plugin::CreateContext() {
DCHECK(!pgl_context_);
// Initialize a 3D context.
NPDeviceContext3DConfig config;
config.commandBufferSize = kCommandBufferSize;
device3d_->initializeContext(npp_, &config, &context3d_);
context3d_.repaintCallback = RepaintCallback;
// Create a PGL context.
pgl_context_ = pglCreateContext(npp_, device3d_, &context3d_);
// Initialize demo.
pglMakeCurrent(pgl_context_);
CHECK(demo_->InitGL());
pglMakeCurrent(PGL_NO_CONTEXT);
}
void Plugin::DestroyContext() {
DCHECK(pgl_context_);
pglDestroyContext(pgl_context_);
pgl_context_ = NULL;
device3d_->destroyContext(npp_, &context3d_);
}
} // namespace demos
} // namespace gpu
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