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// This file contains the Viewport render node implementation

#include "core/cross/viewport.h"
#include "core/cross/renderer.h"

namespace o3d {

O3D_DEFN_CLASS(Viewport, RenderNode);

const char* Viewport::kViewportParamName =
    O3D_STRING_CONSTANT("viewport");
const char* Viewport::kDepthRangeParamName =
    O3D_STRING_CONSTANT("depthRange");

Viewport::Viewport(ServiceLocator* service_locator)
    : RenderNode(service_locator) {
  RegisterParamRef(kViewportParamName, &viewport_param_);
  RegisterParamRef(kDepthRangeParamName, &depth_range_param_);

  set_viewport(Float4(0.0, 0.0f, 1.0f, 1.0f));
  set_depth_range(Float2(0.0, 1.0f));
}

ObjectBase::Ref Viewport::Create(ServiceLocator* service_locator) {
  return ObjectBase::Ref(new Viewport(service_locator));
}

void Viewport::Render(RenderContext* render_context) {
  render_context->renderer()->GetViewport(&old_viewport_, &old_depth_range_);
  render_context->renderer()->SetViewport(viewport(), depth_range());
}

void Viewport::PostRender(RenderContext* render_context) {
  render_context->renderer()->SetViewport(old_viewport_, old_depth_range_);
}

}  // namespace o3d