GL_ARB_texture_buffer_range http://www.opengl.org/registry/specs/gl/ARB/texture_buffer_range.txt GL_ARB_texture_buffer_range GL_TEXTURE_BUFFER_OFFSET 0x919D GL_TEXTURE_BUFFER_SIZE 0x919E GL_TEXTURE_BUFFER_OFFSET_ALIGNMENT 0x919F void glTexBufferRange (GLenum target, GLenum internalformat, GLuint buffer, GLintptr offset, GLsizeiptr size) void glTextureBufferRangeEXT (GLuint texture, GLenum target, GLenum internalformat, GLuint buffer, GLintptr offset, GLsizeiptr size)