gl_FragCoord z always 1

If you do not write one, then OpenGL will happily use gl_FragCoord.z as the ... is always written...

Alternatively, you can get it recover it from gl_FragCoord... In a fragment shader, gl_FragCoord ...

gl_FragCoord 在片元着色器階段很有用， x, y 是窗口空間的值，單位是像素。如果用戶沒有寫入gl_FragDepth， z 值將被寫入， gl_FragCoord 是 1/Wcli...

gl_FragCoord = gl_Position; Listing 39.1. ... In the pixel shader, the z-value is multiplied by 1...

w be representing depth information while gl_FragCoord.z is always 1.0 for all fragments? glsl th...