29 lines
882 B
GLSL
29 lines
882 B
GLSL
// underwater overlay adapted from original Hexmas sanity effect shader
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// slime version
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vec2 calcdist( vec2 duv )
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{
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vec2 uv = vec2(0.);
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vec2 dist = 2.*texture(warptex,duv*.4).xy-1.;
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dist.x *= abs(mod(dist.y+timer*.24536,4.)-2.)-1.;
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uv.x += dist.x*.02*dfact;
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dist = 2.*texture(warptex,(duv+uv)*.3).xy-1.;
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dist.y *= abs(mod(dist.x+timer*.15363,4.)-2.)-1.;
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uv.y -= dist.y*.03*dfact;
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return uv;
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}
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void main()
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{
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vec2 uv = TexCoord+calcdist(TexCoord-vec2(0.,timer*.08));
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vec2 bresl = vec2(textureSize(InputTexture,0));
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vec2 sr = vec2(1.,bresl.y/bresl.x);
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float p = distance(uv,vec2(.5));
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uv = (uv-.5)*(1.-dfact*.11)+.5;
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vec4 res = texture(InputTexture,uv);
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vec4 flood = texture(fluidtex,uv*sr+vec2(timer*.02,timer*.05))*.3
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+texture(fluidtex,uv*sr*2.+vec2(-timer*.04,timer*.08))*.4;
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flood.rgb *= lightcol;
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res.rgb += flood.rgb*dfact;
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FragColor = vec4(res.rgb,1.);
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}
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