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#version 450
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out vec4 fragColor;
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void main()
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{
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// Normalized pixel coordinates (from -1 to 1)
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vec2 iResolution = vec2(1920.0, 1080.0);
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vec2 uv = (gl_FragCoord.xy/iResolution.xy)*2.0 - vec2(1.0,1.0);
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uv.y *= iResolution.y/iResolution.x;
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fragColor = abs(uv.yxyx);
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} |