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@@ -8,12 +8,26 @@ geometry.position = - vViewPosition;
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geometry.normal = normal;
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geometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );
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-#ifdef CLEARCOAT
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+#ifdef USE_CLEARCOAT
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geometry.clearcoatNormal = clearcoatNormal;
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#endif
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+#ifdef USE_IRIDESCENCE
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+ float dotNVi = saturate( dot( normal, geometry.viewDir ) );
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+ if ( material.iridescenceThickness == 0.0 ) {
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+ material.iridescence = 0.0;
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+ } else {
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+ material.iridescence = saturate( material.iridescence );
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+ }
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+ if ( material.iridescence > 0.0 ) {
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+ material.iridescenceFresnel = evalIridescence( 1.0, material.iridescenceIOR, dotNVi, material.iridescenceThickness, material.specularColor );
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+ // Iridescence F0 approximation
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+ material.iridescenceF0 = Schlick_to_F0( material.iridescenceFresnel, 1.0, dotNVi );
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+ }
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+#endif
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+
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IncidentLight directLight;
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#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )
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@@ -45,6 +59,10 @@ IncidentLight directLight;
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#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )
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SpotLight spotLight;
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+ vec4 spotColor;
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+ vec3 spotLightCoord;
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+ bool inSpotLightMap;
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+
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#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0
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SpotLightShadow spotLightShadow;
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#endif
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@@ -56,6 +74,22 @@ IncidentLight directLight;
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getSpotLightInfo( spotLight, geometry, directLight );
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+ // spot lights are ordered [shadows with maps, shadows without maps, maps without shadows, none]
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+ #if ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS )
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+ #define SPOT_LIGHT_MAP_INDEX UNROLLED_LOOP_INDEX
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+ #elif ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )
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+ #define SPOT_LIGHT_MAP_INDEX NUM_SPOT_LIGHT_MAPS
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+ #else
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+ #define SPOT_LIGHT_MAP_INDEX ( UNROLLED_LOOP_INDEX - NUM_SPOT_LIGHT_SHADOWS + NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS )
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+ #endif
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+ #if ( SPOT_LIGHT_MAP_INDEX < NUM_SPOT_LIGHT_MAPS )
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+ spotLightCoord = vSpotLightCoord[ i ].xyz / vSpotLightCoord[ i ].w;
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+ inSpotLightMap = all( lessThan( abs( spotLightCoord * 2. - 1. ), vec3( 1.0 ) ) );
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+ spotColor = texture2D( spotLightMap[ SPOT_LIGHT_MAP_INDEX ], spotLightCoord.xy );
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+ directLight.color = inSpotLightMap ? directLight.color * spotColor.rgb : directLight.color;
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+ #endif
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+ #undef SPOT_LIGHT_MAP_INDEX
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+
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#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )
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spotLightShadow = spotLightShadows[ i ];
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directLight.color *= ( directLight.visible && receiveShadow ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotLightCoord[ i ] ) : 1.0;
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