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