void StudentRenderer::clearStudentData()
{
	if (vbo_position_cube)
	{
		glDeleteBuffers(1, &vbo_position_cube);
		vbo_position_cube = 0;
	}
	if (vbo_normal_cube)
	{
		glDeleteBuffers(1, &vbo_normal_cube);
		vbo_normal_cube = 0;
	}
	if (vbo_texture_cube)
	{
		glDeleteBuffers(1, &vbo_texture_cube);
		vbo_texture_cube = 0;
	}
	if (vao_cube)
	{
		glDeleteVertexArrays(1, &vao_cube);
		vao_cube = 0;
	}

	if (vbo_position_sphere)
	{
		glDeleteBuffers(1, &vbo_position_sphere);
		vbo_position_sphere = 0;
	}
	if (vbo_normal_sphere)
	{
		glDeleteBuffers(1, &vbo_normal_sphere);
		vbo_normal_sphere = 0;
	}
	if (vbo_texture_sphere)
	{
		glDeleteBuffers(1, &vbo_texture_sphere);
		vbo_texture_sphere = 0;
	}
	if (vbo_elements_sphere)
	{
		glDeleteBuffers(1, &vbo_elements_sphere);
		vbo_elements_sphere = 0;
	}
	if (vao_sphere)
	{
		glDeleteVertexArrays(1, &vao_sphere);
		vao_sphere = 0;
	}
	if (vbo_plane)
	{
		glDeleteBuffers(1, &vbo_plane);
		vbo_plane = 0;
	}
	if (vao_plane)
	{
		glDeleteVertexArrays(1, &vao_plane);
		vao_plane = 0;
	}

	GLsizei shaderCount, shaderNumber;
	if (gShaderProgramObject)
	{

		glUseProgram(gShaderProgramObject);
		glGetProgramiv(gShaderProgramObject, GL_ATTACHED_SHADERS, &shaderCount);
		GLuint *pShaders = (GLuint *)malloc(shaderCount * sizeof(GLuint));
		if (pShaders)
		{
			glGetAttachedShaders(gShaderProgramObject, shaderCount, &shaderCount, pShaders);
			for (shaderNumber = 0; shaderNumber < shaderCount; shaderNumber++)
			{
				glDetachShader(gShaderProgramObject, pShaders[shaderNumber]);
				glDeleteShader(pShaders[shaderNumber]);
				pShaders[shaderNumber] = 0;
			}
			free(pShaders);
		}
		glDeleteProgram(gShaderProgramObject);
		gShaderProgramObject = 0;
		glUseProgram(0);
	}

}