//This file is automatically rebuilt by the Cesium build process.
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export default "#if defined(HAS_NORMALS) && !defined(HAS_TANGENTS) && !defined(LIGHTING_UNLIT)\n\
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#ifdef GL_OES_standard_derivatives\n\
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#extension GL_OES_standard_derivatives : enable\n\
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#endif\n\
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#endif\n\
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\n\
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czm_modelMaterial defaultModelMaterial()\n\
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{\n\
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czm_modelMaterial material;\n\
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material.diffuse = vec3(1.0);\n\
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material.specular = vec3(0.04); // dielectric (non-metal)\n\
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material.roughness = 0.0;\n\
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material.occlusion = 1.0;\n\
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material.normalEC = vec3(0.0, 0.0, 1.0);\n\
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material.emissive = vec3(0.0);\n\
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material.alpha = 1.0;\n\
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return material;\n\
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}\n\
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\n\
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vec4 handleAlpha(vec3 color, float alpha)\n\
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{\n\
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#ifdef ALPHA_MODE_MASK\n\
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if (alpha < u_alphaCutoff) {\n\
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discard;\n\
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}\n\
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return vec4(color, 1.0);\n\
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#elif defined(ALPHA_MODE_BLEND)\n\
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return vec4(color, alpha);\n\
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#else // OPAQUE\n\
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return vec4(color, 1.0);\n\
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#endif\n\
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}\n\
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\n\
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Feature feature;\n\
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\n\
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void main() \n\
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{\n\
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czm_modelMaterial material = defaultModelMaterial();\n\
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\n\
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ProcessedAttributes attributes;\n\
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geometryStage(attributes);\n\
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\n\
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#ifdef HAS_FEATURES\n\
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featureStage(feature);\n\
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#endif\n\
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\n\
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\n\
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#ifndef CUSTOM_SHADER_REPLACE_MATERIAL\n\
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materialStage(material, attributes, feature);\n\
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#endif\n\
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\n\
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#ifdef HAS_CUSTOM_FRAGMENT_SHADER\n\
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customShaderStage(material, attributes);\n\
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#endif\n\
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\n\
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lightingStage(material);\n\
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\n\
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#ifdef HAS_FEATURES\n\
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cpuStylingStage(material, feature);\n\
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#endif\n\
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\n\
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#ifdef HAS_MODEL_COLOR\n\
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modelColorStage(material);\n\
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#endif \n\
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\n\
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vec4 color = handleAlpha(material.diffuse, material.alpha);\n\
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\n\
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gl_FragColor = color;\n\
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}\n\
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";
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