extension.hpp

Go to the documentation of this file.

#pragma once
#ifndef OGLPLUS_EXTENSION_1203031825_HPP
#define OGLPLUS_EXTENSION_1203031825_HPP

#include <oglplus/config/gl.hpp>
#include <oglplus/error/basic.hpp>

namespace oglplus {

void RequireExtension(const GLchar* name, bool available);

#if OGLPLUS_USE_GLEW
#define OGLPLUS_EXTENSION_AVAILABLE(VENDOR,EXTENSION) (\
    (GL_ ## VENDOR ## _ ## EXTENSION == GL_TRUE) ||\
    (GLEW_ ## VENDOR ## _ ## EXTENSION == GL_TRUE) \
)
#else
bool HasExtension(const GLchar* name);
#define OGLPLUS_EXTENSION_AVAILABLE(VENDOR,EXTENSION) (\
    HasExtension("GL_" #VENDOR "_" #EXTENSION) \
)
#endif

#define OGLPLUS_REQUIRE_EXTENSION(VENDOR, EXTENSION) \
    ::oglplus::RequireExtension( \
        #VENDOR "_" #EXTENSION, \
        OGLPLUS_EXTENSION_AVAILABLE(VENDOR, EXTENSION) \
    )

#define OGLPLUS_EXTENSION_CLASS(VENDOR, EXTENSION) \
    VENDOR ## _ ## EXTENSION(bool throw_if_unavailable = true) \
    { \
        if(throw_if_unavailable) \
            OGLPLUS_REQUIRE_EXTENSION(VENDOR, EXTENSION); \
    } \
    static bool Available(void) \
    { \
        return OGLPLUS_EXTENSION_AVAILABLE(VENDOR, EXTENSION); \
    }


#define OGLPLUS_HAS_GL_EXT(VENDOR,EXTENSION) \
    OGLPLUS_EXTENSION_AVAILABLE(VENDOR,EXTENSION)

} // namespace oglplus

#if !OGLPLUS_LINK_LIBRARY || defined(OGLPLUS_IMPLEMENTING_LIBRARY)
#include <oglplus/extension.ipp>
#endif // OGLPLUS_LINK_LIBRARY

#endif // include guard