1GL_ARB_texture_storage 2https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_texture_storage.txt 3GL_ARB_texture_storage 4 5 GL_TEXTURE_IMMUTABLE_FORMAT 0x912F 6 void glTexStorage1D (GLenum target, GLsizei levels, GLenum internalformat, GLsizei width) 7 void glTexStorage2D (GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height) 8 void glTexStorage3D (GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth) 9