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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.
#if defined(ENABLE_GPU)
#include "chrome/renderer/webgles2context_impl.h"
#include "chrome/renderer/gpu_channel_host.h"
#include "chrome/renderer/render_thread.h"
#include "chrome/renderer/render_view.h"
#include "third_party/WebKit/WebKit/chromium/public/WebView.h"
WebGLES2ContextImpl::WebGLES2ContextImpl() : context_(NULL) {
}
WebGLES2ContextImpl::~WebGLES2ContextImpl() {
destroy();
}
// TODO(vangelis): Remove once the method is removed from the WebGLES2Context.
bool WebGLES2ContextImpl::initialize(WebKit::WebView* web_view) {
return initialize(web_view, NULL);
}
bool WebGLES2ContextImpl::initialize(
WebKit::WebView* web_view,
WebGLES2Context* parent) {
// Windowed contexts don't have a parent context.
DCHECK(!(web_view && parent));
RenderThread* render_thread = RenderThread::current();
if (!render_thread)
return false;
GpuChannelHost* host = render_thread->EstablishGpuChannelSync();
if (!host)
return false;
DCHECK(host->state() == GpuChannelHost::CONNECTED);
// If a WebView is passed then create a context rendering directly
// into the window used by the WebView, otherwise create an offscreen
// context.
if (web_view) {
RenderView* renderview = RenderView::FromWebView(web_view);
if (!renderview)
return false;
gfx::NativeViewId view_id = renderview->host_window();
context_ = ggl::CreateViewContext(host, view_id);
} else {
ggl::Context* parent_context = NULL;
if (parent) {
WebGLES2ContextImpl* parent_context_impl =
static_cast<WebGLES2ContextImpl*>(parent);
parent_context = parent_context_impl->context();
DCHECK(parent_context);
}
context_ = ggl::CreateOffscreenContext(host, parent_context,
gfx::Size(1, 1));
}
return (context_ != NULL);
}
bool WebGLES2ContextImpl::makeCurrent() {
return ggl::MakeCurrent(context_);
}
bool WebGLES2ContextImpl::destroy() {
return ggl::DestroyContext(context_);
}
bool WebGLES2ContextImpl::swapBuffers() {
return ggl::SwapBuffers(context_);
}
void WebGLES2ContextImpl::resizeOffscreenContent(const WebKit::WebSize& size) {
ggl::ResizeOffscreenContext(context_, size);
}
unsigned WebGLES2ContextImpl::getOffscreenContentParentTextureId() {
return ggl::GetParentTextureId(context_);
}
#endif // defined(ENABLE_GPU)
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