third_party/WebKit/Source/modules/webgl/WebGLTransformFeedback.h

// Copyright 2015 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.

#ifndef WebGLTransformFeedback_h
#define WebGLTransformFeedback_h

#include "modules/webgl/WebGLProgram.h"
#include "modules/webgl/WebGLSharedPlatform3DObject.h"
#include "wtf/PassRefPtr.h"

namespace blink {

class WebGL2RenderingContextBase;

class WebGLTransformFeedback : public WebGLSharedPlatform3DObject {
  DEFINE_WRAPPERTYPEINFO();

 public:
  ~WebGLTransformFeedback() override;

  static WebGLTransformFeedback* create(WebGL2RenderingContextBase*);

  GLenum getTarget() const { return m_target; }
  void setTarget(GLenum);

  bool hasEverBeenBound() const { return object() && m_target; }

  WebGLProgram* getProgram() const { return m_program; }
  void setProgram(WebGLProgram*);

  DECLARE_TRACE();

 protected:
  explicit WebGLTransformFeedback(WebGL2RenderingContextBase*);

  void deleteObjectImpl(gpu::gles2::GLES2Interface*) override;

 private:
  bool isTransformFeedback() const override { return true; }

  GLenum m_target;

  Member<WebGLProgram> m_program;
};

}  // namespace blink

#endif  // WebGLTransformFeedback_h