lib/mittsu/opengl/shader/chunks/envmap_vertex.glsl from danini-the-panini/mittsu-opengl

lib/mittsu/opengl/shader/chunks/envmap_vertex.glsl

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#if defined( USE_ENVMAP ) && ! defined( USE_BUMPMAP ) && ! defined( USE_NORMALMAP ) && ! defined( PHONG )

    vec3 worldNormal = transformDirection( objectNormal, modelMatrix );

    vec3 cameraToVertex = normalize( worldPosition.xyz - cameraPosition );

    #ifdef ENVMAP_MODE_REFLECTION

        vReflect = reflect( cameraToVertex, worldNormal );

    #else

        vReflect = refract( cameraToVertex, worldNormal, refractionRatio );

    #endif

#endif