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							|  | out vec4 sk_FragColor;
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							|  | uniform vec2 a;
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							|  | uniform vec4 b;
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							|  | void main() {
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							|  |     sk_FragColor.x = float(packHalf2x16(a));
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							|  |     sk_FragColor.x = float(packUnorm2x16(a));
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							|  |     sk_FragColor.x = float(packSnorm2x16(a));
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							|  |     sk_FragColor.x = float(packUnorm4x8(b));
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							|  |     sk_FragColor.x = float(packSnorm4x8(b));
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							|  | }
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