#ifndef WC3RE_RENDER_RENDERUTIL_HH__
#define WC3RE_RENDER_RENDERUTIL_HH__

#include "GlResource.hh"

namespace render {
  unsigned ilog2(unsigned in);

  // Return (GL_MAX_TEXTURE_SIZE, GL_MAX_ARRAY_TEXTURE_LAYERS)
  std::tuple<unsigned, unsigned> getGLTextureMaximums();

  // call glUseProgram if program != current program
  void useProgram(gl::GLuint program);

  bool extensionSupported(std::string const& extname); 
  
  TextureResource create2DTexture(unsigned width, unsigned height, bool alpha, unsigned levels = 0);
  TextureResource create2DArrayTexture(unsigned width, unsigned height, unsigned count,
				       bool alpha, unsigned levels = 0);
}

#endif