Dog-Lynx-And-HCN/shaders/BigLaser.gdshader

shader_type canvas_item;
render_mode blend_add;
uniform vec4 laser_color : source_color = vec4(1.0, 0.0, 0.0, 1.0); // 边缘颜色
uniform float width : hint_range(0.01, 1.0) = 0.1; // 激光宽度
uniform float softness : hint_range(0.01, 1.0) = 0.2; // 边缘柔和度
uniform float wave_speed : hint_range(-10.0, 10.0) = 2.0; // 波传播速度
uniform float wave_frequency : hint_range(1.0, 20.0) = 8.0; // 波频率
uniform float wave_amplitude : hint_range(0.1, 2.0) = 0.5; // 波幅度
uniform float wave_width : hint_range(0.01, 0.5) = 0.1; // 波宽度
uniform float edge_nonalpha:hint_range(0.0, 1.0, 0.01)=0.25;
uniform float alpha:hint_range(0.0, 1.0, 0.01)=1.0;
void fragment() {
    vec2 uv = UV - vec2(0.5, 0.0);
    float dist = abs(uv.x) / width;
	float x_dist=abs(UV.x-0.5);
    float laser_intensity = 1.0 - smoothstep(0.0, softness, dist);
    float wave_pos = mod(TIME * wave_speed, 1.0);
    float wave_dist = abs(uv.y - wave_pos);
    float wave_intensity = exp(-wave_dist * wave_dist / (2.0 * wave_width * wave_width));
    wave_intensity *= exp(-uv.x * uv.x / (2.0 * (width * 0.5) * (width * 0.5)));
    wave_intensity *= sin(wave_dist * wave_frequency * 3.14159) * wave_amplitude;
    vec3 base_color = mix(vec3(1.0), laser_color.rgb, 1.0 - laser_intensity);
    vec3 color = base_color + vec3(wave_intensity);
	COLOR = vec4(color,smoothstep(0,1.0-edge_nonalpha,(0.5-x_dist)/0.5));
	COLOR.a*=alpha;
}