Godot Shader替换颜色

Posted 2022-10-16 张学徒

Godot 4.0 alpha16

替换制定的颜色

shader_type canvas_item;

// 要替换的颜色
uniform vec3 from : source_color = vec3(0.0);
// 替换成这个颜色
uniform vec3 to : source_color = vec3(0.0);
// 替换颜色阈值，阈值越高替换的颜色值范围越广
uniform float threshold : hint_range(0.0, 1.0, 0.01) = 0.1;


void fragment() 
	vec3 d = abs(COLOR.rgb - from);
	float m = (d.r + d.g + d.b) / 3.0;
	if(m < threshold)
		COLOR.rgb = to;