void main() {
vec3 color;
vec4 final = u_lightAmbient;
vec3 normal;
vec3 lightMapDiffuse;
if (u_normalLayerSettings.enabled) {
normal = decodeNormal(u_normalMap);
} else {
normal = v_normal;
}
float lambertFactor = max(dot(normal, v_lightDir), 0.0);
if (lambertFactor > 0.0) {
if (u_diffuseLayerSettings.enabled) {
vec4 diffuseColor = computeLayerColor(u_diffuseMap, u_diffuseLayerSettings);
color = combineLayerColor(diffuseColor, color, u_diffuseLayerSettings);
}
if (u_decalLayerSettings.enabled) {
vec4 decalColor = computeLayerColor(u_decalMap, u_decalLayerSettings);
color = combineLayerColor(decalColor, color, u_decalLayerSettings);
}
vec4 specularColor = computeSpecular(u_specularMap, u_specularLayerSettings, u_specularity, u_specMult, normal);
if (u_lightMapLayerSettings.enabled) {
vec4 lightMapColor = computeLayerColor(u_lightMapMap, u_lightMapLayerSettings) * 2.0;
lightMapDiffuse = lightMapColor.rgb;
}
/*final.rgb = color * lightMapDiffuse + specularColor.rgb;*/
final.rgb = (color + specularColor.rgb) * lambertFactor;
bool addEmissive = false;
vec3 emissiveColor;
vec4 tempColor;
if (u_emissiveLayerSettings.enabled) {
tempColor = computeLayerColor(u_emissiveMap, u_emissiveLayerSettings);
if (u_emissiveLayerSettings.op == LAYEROP_MOD || u_emissiveLayerSettings.op == LAYEROP_MOD2X || u_emissiveLayerSettings.op == LAYEROP_LERP) {
final.rgb = combineLayerColor(tempColor, final.rgb, u_emissiveLayerSettings);
} else {
vec4 computeSpecular(sampler2D specularMap, LayerSettings layerSettings, float specularity, float specMult, vec3 normal) {
vec4 color;
if (layerSettings.enabled) {
color = computeLayerColor(specularMap, layerSettings);
} else {
color = vec4(0);
}
float factor = pow(max(-dot(v_halfVec, normal), 0.0), specularity) * specMult;
return color * factor;
}
