mirror of
https://github.com/Anuken/Mindustry.git
synced 2024-09-22 22:07:31 +03:00
55 lines
1.4 KiB
GLSL
55 lines
1.4 KiB
GLSL
#ifdef GL_ES
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precision mediump float;
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precision mediump int;
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#endif
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uniform sampler2D u_texture;
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uniform vec4 u_color;
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uniform vec2 u_texsize;
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uniform vec2 u_uv;
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uniform vec2 u_uv2;
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uniform float u_progress;
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uniform float u_time;
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varying vec4 v_color;
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varying vec2 v_texCoord;
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bool id(vec2 coords, vec4 base){
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vec4 target = texture2D(u_texture, coords);
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return target.a < 0.1 || (coords.x < u_uv.x || coords.y < u_uv.y || coords.x > u_uv2.x || coords.y > u_uv2.y);
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}
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bool cont(vec2 T, vec2 v){
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const float step = 3.0;
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vec4 base = texture2D(u_texture, T);
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return base.a > 0.1 &&
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(id(T + vec2(0, step) * v, base) || id(T + vec2(0, -step) * v, base) ||
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id(T + vec2(step, 0) * v, base) || id(T + vec2(-step, 0) * v, base));
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}
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void main() {
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vec2 t = v_texCoord.xy;
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vec2 v = vec2(1.0/u_texsize.x, 1.0/u_texsize.y);
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vec2 coords = (v_texCoord-u_uv) / v;
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float value = coords.x + coords.y;
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vec4 color = texture2D(u_texture, t);
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vec2 center = ((u_uv + u_uv2)/2.0 - u_uv) /v;
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float dst = (abs(center.x - coords.x) + abs(center.y - coords.y))/2.0;
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if((mod(u_time / 1.5 + value, 20.0) < 15.0 && cont(t, v))){
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gl_FragColor = u_color;
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}else if(dst > (1.0-u_progress) * (center.x)){
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gl_FragColor = color;
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}else if((dst + 1.0 > (1.0-u_progress) * (center.x)) && color.a > 0.1){
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gl_FragColor = u_color;
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}else{
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gl_FragColor = vec4(0.0);
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}
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}
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