gl_Position range

screen, and gl_FragCoord.z contains the normalized z value in the range of [0, 1]. This is calcul...

What we usually do, is specify the coordinates in a range (or space) we ... The resulting vertex ...

Yes, gl_Position.z should be between [-1, 1] after dividing gl_Position.w , otherwise will be cli...

gl_Position : a vec4 position of a vertex in “clip coordinates”. ... The values for x and y are i...

The variable gl_Position is intended for writing the homogeneous vertex position. It can be writt...