GL_ALPHA, GL_LUMINANCE

I'm trying to bind a texture that I want to interpret as either Alpha, Luminance or Intensity. I'm using OpenGL 4.0. I can bind them as GL_RED OK with no problems, i.e. : ``` glTexImage2D( GL_TEXTURE_2D, i, GL_RED, mipSizeX, mipSizeY, 0, GL_RED, GL_UNSIGNED_BYTE, nullptr); ``` However whenever I try to bind as GL_ALPHA, GL_LUMINANCE or GL_INTENSITY, I get an error 1280. Are those formats deprecated with GL 4.0, or am I doing something wrong? E.g. this fails: ``` glTexImage2D( GL_TEXTURE_2D, i, GL_ALPHA8 mipSizeX, mipSizeY, 0, GL_ALPHA, GL_UNSIGNED_BYTE, nullptr); ``` EDIT: Ok as these formats are deprecated, this page contains tables showing what the valid formats actually are.