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// This file contains the class declaration for SamplerGLES2.

#ifndef O3D_CORE_CROSS_GLES2_SAMPLER_GLES2_H_
#define O3D_CORE_CROSS_GLES2_SAMPLER_GLES2_H_

#include "core/cross/sampler.h"

namespace o3d {

class RendererGLES2;

// TODO(gman): Replace.
typedef GLuint GLES2Parameter;

// SamplerGLES2 is an implementation of the Sampler object for GLES2.
class SamplerGLES2 : public Sampler {
 public:
  explicit SamplerGLES2(ServiceLocator* service_locator);
  virtual ~SamplerGLES2();

  // Sets the gl texture and sampler states.
  // Returns the handle to the texture.
  GLint SetTextureAndStates(GLES2Parameter gl_param);

  // Unbinds the GLES2 texture.
  void ResetTexture(GLES2Parameter gl_param);

 private:
  RendererGLES2* renderer_;

  // We compare this to RendererGLES2::GetTextureGroupSetCount to see
  // if we need to update our texture unit
  int texture_unit_group_set_count_;

  GLenum texture_unit_;

  DISALLOW_COPY_AND_ASSIGN(SamplerGLES2);
};
}  // namespace o3d


#endif  // O3D_CORE_CROSS_GLES2_SAMPLER_GLES2_H_