3galaxy_fragment.frag

main 45 lines · 1.5 KB Raw

Alex Commit Client Upload Part 1 19/10/2026 00:04

1uniform mat4 u_Color;

2varying vec2 v_TexCoord;

3varying vec2 v_TexCoord2;

4varying vec2 v_Position;

5uniform sampler2D u_Tex0;

6uniform float u_Time;

8// CONFIG

9float speed = 50.0;

10float height = 200.0;

11float angle = 290.0; // degrees

12float intensity = 1.0;

13// CONFIG END

15vec2 rotate(vec2 v, float a) {

16 float s = sin(a);

17 float c = cos(a);

18 mat2 m = mat2(c, -s, s, c);

19 return m * v;

20}

22void main()

23{

24 gl_FragColor = texture2D(u_Tex0, v_TexCoord);

25 vec4 texcolor = texture2D(u_Tex0, v_TexCoord2);

27 if(texcolor.a > 0.9) {

28 vec2 p = rotate(v_Position, (angle / 180.0) * 3.14);

29 float frame = mod(p.y, height) - mod(u_Time * speed, height);

30 float dist1 = min(abs(frame), min(abs(frame - height), abs(frame + height)));

31 frame = mod(p.y + height * 0.33, height) - mod(u_Time * speed, height);

32 float dist2 = min(abs(frame), min(abs(frame - height), abs(frame + height)));

33 frame = mod(p.y + height * 0.66, height) - mod(u_Time * speed, height);

34 float dist3 = min(abs(frame), min(abs(frame - height), abs(frame + height)));

        gl_FragColor.xyz *= vec3(intensity / sqrt(dist1 / 2.0), intensity / sqrt(dist2 / 2.0), intensity/ sqrt(dist3 / 2.0));

36 }

37 if(texcolor.r > 0.9) {

38 gl_FragColor *= texcolor.g > 0.9 ? u_Color[0] : u_Color[1];

39 } else if(texcolor.g > 0.9) {

40 gl_FragColor *= u_Color[2];

41 } else if(texcolor.b > 0.9) {

42 gl_FragColor *= u_Color[3];

43 }

44 if(gl_FragColor.a < 0.01) discard;

45}