第0章: Hello World0_1_helloWorldOn this page0_1_helloWorldコード 0.4, 図 0.4: 0_1_helloWorld.frag #version 300 es precision highp float; out vec4 fragColor; uniform vec2 u_resolution; void main(){ vec2 pos = gl_FragCoord.xy / u_resolution.xy; fragColor = vec4(1.0, pos, 1.0); }#version 300 esprecision highp float;out vec4 fragColor;uniform vec2 u_resolution; void main(){ vec2 pos = gl_FragCoord.xy / u_resolution.xy; fragColor = vec4(1.0, pos, 1.0);}