SharedGraphicsContext3D.cpp [plain text]
#include "config.h"
#include "SharedGraphicsContext3D.h"
#include "Extensions3D.h"
#include "cc/CCProxy.h"
namespace WebCore {
class SharedGraphicsContext3DImpl {
public:
SharedGraphicsContext3DImpl() : m_context(0) { }
PassRefPtr<GraphicsContext3D> getOrCreateContext()
{
if (m_context && (!m_context->makeContextCurrent() || (m_context->getExtensions()->getGraphicsResetStatusARB() != GraphicsContext3D::NO_ERROR)))
m_context.clear();
if (!m_context)
createContext();
if (m_context && !m_context->makeContextCurrent())
m_context.clear();
return m_context;
}
PassRefPtr<GraphicsContext3D> getContext()
{
return m_context;
}
PassRefPtr<GraphicsContext3D> createContext()
{
GraphicsContext3D::Attributes attributes;
attributes.depth = false;
attributes.stencil = true;
attributes.antialias = false;
attributes.shareResources = true;
attributes.preferDiscreteGPU = true;
m_context = GraphicsContext3D::create(attributes, 0);
return m_context;
}
private:
RefPtr<GraphicsContext3D> m_context;
};
PassRefPtr<GraphicsContext3D> SharedGraphicsContext3D::get()
{
DEFINE_STATIC_LOCAL(SharedGraphicsContext3DImpl, impl, ());
return impl.getOrCreateContext();
}
enum ContextOperation {
Get, Create
};
static PassRefPtr<GraphicsContext3D> getOrCreateContextForImplThread(ContextOperation op)
{
DEFINE_STATIC_LOCAL(SharedGraphicsContext3DImpl, impl, ());
return op == Create ? impl.createContext() : impl.getContext();
}
PassRefPtr<GraphicsContext3D> SharedGraphicsContext3D::getForImplThread()
{
ASSERT(CCProxy::isImplThread());
return getOrCreateContextForImplThread(Get);
}
bool SharedGraphicsContext3D::haveForImplThread()
{
ASSERT(CCProxy::isMainThread());
return getOrCreateContextForImplThread(Get);
}
bool SharedGraphicsContext3D::createForImplThread()
{
ASSERT(CCProxy::isMainThread());
return getOrCreateContextForImplThread(Create);
}
}