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varying vec4 v_fragmentColor;
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varying vec2 v_texCoord;
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void main()
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{
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vec4 v_orColor = v_fragmentColor * texture2D(CC_Texture0, v_texCoord);
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float gray = dot(v_orColor.rgb, vec3(0.299, 0.587, 0.114));
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gl_FragColor = vec4(gray, gray, gray, v_orColor.a);
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}
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