//This file is automatically rebuilt by the Cesium build process.
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export default "uniform sampler2D colorTexture;\n\
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\n\
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varying vec2 v_textureCoordinates;\n\
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\n\
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#ifdef AUTO_EXPOSURE\n\
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uniform sampler2D autoExposure;\n\
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#endif\n\
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\n\
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// See equation 3:\n\
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// http://www.cs.utah.edu/~reinhard/cdrom/tonemap.pdf\n\
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\n\
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void main()\n\
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{\n\
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vec4 fragmentColor = texture2D(colorTexture, v_textureCoordinates);\n\
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vec3 color = fragmentColor.rgb;\n\
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#ifdef AUTO_EXPOSURE\n\
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float exposure = texture2D(autoExposure, vec2(0.5)).r;\n\
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color /= exposure;\n\
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#endif\n\
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color = color / (1.0 + color);\n\
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color = czm_inverseGamma(color);\n\
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gl_FragColor = vec4(color, fragmentColor.a);\n\
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}\n\
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";
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