#version 450
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
#extension GL_EXT_nonuniform_qualifier : require

layout(location = 0) out vec4 shadowMap;

void main()
{
    // shadowMap = vec4 (0.0f, 0.0f, gl_FragCoord.z, 1.0f);
    shadowMap = vec4 (gl_FragCoord.z, gl_FragCoord.z * gl_FragCoord.z, 0.0f, 1.0f);
}