var __extends = (this && this.__extends) || function (d, b) {
    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var BABYLON;
(function (BABYLON) {
    var maxSimultaneousLights = 4;
    var PBRMaterialDefines = (function () {
        function PBRMaterialDefines() {
            this.ALBEDO = false;
            this.CLIPPLANE = false;
            this.ALPHATEST = false;
            this.FOG = false;
            this.NORMAL = false;
            this.UV1 = false;
            this.UV2 = false;
            this.VERTEXCOLOR = false;
            this.VERTEXALPHA = false;
            this.BONES = false;
            this.BONES4 = false;
            this.BonesPerMesh = 0;
            this.INSTANCES = false;
            this.POINTSIZE = false;
            this._keys = Object.keys(this);
        }
        PBRMaterialDefines.prototype.isEqual = function (other) {
            for (var index = 0; index < this._keys.length; index++) {
                var prop = this._keys[index];
                if (this[prop] !== other[prop]) {
                    return false;
                }
            }
            return true;
        };
        PBRMaterialDefines.prototype.cloneTo = function (other) {
            for (var index = 0; index < this._keys.length; index++) {
                var prop = this._keys[index];
                other[prop] = this[prop];
            }
        };
        PBRMaterialDefines.prototype.reset = function () {
            for (var index = 0; index < this._keys.length; index++) {
                var prop = this._keys[index];
                if (prop === "BonesPerMesh") {
                    this[prop] = 0;
                    continue;
                }
                this[prop] = false;
            }
        };
        PBRMaterialDefines.prototype.toString = function () {
            var result = "";
            for (var index = 0; index < this._keys.length; index++) {
                var prop = this._keys[index];
                if (prop === "BonesPerMesh" && this[prop] > 0) {
                    result += "#define BonesPerMesh " + this[prop] + "\n";
                    continue;
                }
                if (this[prop]) {
                    result += "#define " + prop + "\n";
                }
            }
            return result;
        };
        return PBRMaterialDefines;
    })();
    var PBRMaterial = (function (_super) {
        __extends(PBRMaterial, _super);
        function PBRMaterial(name, scene) {
            _super.call(this, name, scene);
            this.albedoColor = new BABYLON.Color3(1, 1, 1);
            this._worldViewProjectionMatrix = BABYLON.Matrix.Zero();
            this._globalAmbientColor = new BABYLON.Color3(0, 0, 0);
            this._scaledDiffuse = new BABYLON.Color3();
            this._scaledSpecular = new BABYLON.Color3();
            this._defines = new PBRMaterialDefines();
            this._cachedDefines = new PBRMaterialDefines();
            this._cachedDefines.BonesPerMesh = -1;
        }
        PBRMaterial.prototype.needAlphaBlending = function () {
            return this.alpha < 1.0;
        };
        PBRMaterial.prototype.needAlphaTesting = function () {
            return false;
        };
        PBRMaterial.prototype.getAlphaTestTexture = function () {
            return null;
        };
        // Methods   
        PBRMaterial.prototype.isReady = function (mesh, useInstances) {
            if (this.checkReadyOnlyOnce) {
                if (this._wasPreviouslyReady) {
                    return true;
                }
            }
            var scene = this.getScene();
            if (!this.checkReadyOnEveryCall) {
                if (this._renderId === scene.getRenderId()) {
                    return true;
                }
            }
            var engine = scene.getEngine();
            var needNormals = false;
            var needUVs = false;
            this._defines.reset();
            // Textures
            if (scene.texturesEnabled) {
            }
            // Effect
            if (scene.clipPlane) {
                this._defines.CLIPPLANE = true;
            }
            if (engine.getAlphaTesting()) {
                this._defines.ALPHATEST = true;
            }
            // Point size
            if (this.pointsCloud || scene.forcePointsCloud) {
                this._defines.POINTSIZE = true;
            }
            // Fog
            if (scene.fogEnabled && mesh && mesh.applyFog && scene.fogMode !== BABYLON.Scene.FOGMODE_NONE && this.fogEnabled) {
                this._defines.FOG = true;
            }
            // Lights
            // Attribs
            if (mesh) {
                if (needNormals && mesh.isVerticesDataPresent(BABYLON.VertexBuffer.NormalKind)) {
                    this._defines.NORMAL = true;
                }
                if (needUVs) {
                    if (mesh.isVerticesDataPresent(BABYLON.VertexBuffer.UVKind)) {
                        this._defines.UV1 = true;
                    }
                    if (mesh.isVerticesDataPresent(BABYLON.VertexBuffer.UV2Kind)) {
                        this._defines.UV2 = true;
                    }
                }
                if (mesh.useVertexColors && mesh.isVerticesDataPresent(BABYLON.VertexBuffer.ColorKind)) {
                    this._defines.VERTEXCOLOR = true;
                    if (mesh.hasVertexAlpha) {
                        this._defines.VERTEXALPHA = true;
                    }
                }
                if (mesh.useBones && mesh.computeBonesUsingShaders) {
                    this._defines.BONES = true;
                    this._defines.BonesPerMesh = (mesh.skeleton.bones.length + 1);
                    this._defines.BONES4 = true;
                }
                // Instances
                if (useInstances) {
                    this._defines.INSTANCES = true;
                }
            }
            // Get correct effect      
            if (!this._defines.isEqual(this._cachedDefines)) {
                this._defines.cloneTo(this._cachedDefines);
                scene.resetCachedMaterial();
                // Fallbacks
                var fallbacks = new BABYLON.EffectFallbacks();
                if (this._defines.FOG) {
                    fallbacks.addFallback(1, "FOG");
                }
                if (this._defines.BONES4) {
                    fallbacks.addFallback(0, "BONES4");
                }
                //Attributes
                var attribs = [BABYLON.VertexBuffer.PositionKind];
                if (this._defines.NORMAL) {
                    attribs.push(BABYLON.VertexBuffer.NormalKind);
                }
                if (this._defines.UV1) {
                    attribs.push(BABYLON.VertexBuffer.UVKind);
                }
                if (this._defines.UV2) {
                    attribs.push(BABYLON.VertexBuffer.UV2Kind);
                }
                if (this._defines.VERTEXCOLOR) {
                    attribs.push(BABYLON.VertexBuffer.ColorKind);
                }
                if (this._defines.BONES) {
                    attribs.push(BABYLON.VertexBuffer.MatricesIndicesKind);
                    attribs.push(BABYLON.VertexBuffer.MatricesWeightsKind);
                }
                if (this._defines.INSTANCES) {
                    attribs.push("world0");
                    attribs.push("world1");
                    attribs.push("world2");
                    attribs.push("world3");
                }
                // Legacy browser patch
                var join = this._defines.toString();
                this._effect = scene.getEngine().createEffect("pbr", attribs, ["world", "view", "viewProjection", "vEyePosition", "vAlbedoColor",
                    "vFogInfos", "vFogColor", "pointSize",
                    "mBones",
                    "vClipPlane",
                ], [], join, fallbacks, this.onCompiled, this.onError);
            }
            if (!this._effect.isReady()) {
                return false;
            }
            this._renderId = scene.getRenderId();
            this._wasPreviouslyReady = true;
            return true;
        };
        PBRMaterial.prototype.bindOnlyWorldMatrix = function (world) {
            this._effect.setMatrix("world", world);
        };
        PBRMaterial.prototype.bind = function (world, mesh) {
            var scene = this.getScene();
            // Matrices        
            this.bindOnlyWorldMatrix(world);
            this._effect.setMatrix("viewProjection", scene.getTransformMatrix());
            // Bones
            if (mesh && mesh.useBones && mesh.computeBonesUsingShaders) {
                this._effect.setMatrices("mBones", mesh.skeleton.getTransformMatrices());
            }
            if (scene.getCachedMaterial() !== this) {
                // Clip plane
                if (scene.clipPlane) {
                    var clipPlane = scene.clipPlane;
                    this._effect.setFloat4("vClipPlane", clipPlane.normal.x, clipPlane.normal.y, clipPlane.normal.z, clipPlane.d);
                }
                this._effect.setVector3("vEyePosition", scene.activeCamera.position);
            }
            // Point size
            if (this.pointsCloud) {
                this._effect.setFloat("pointSize", this.pointSize);
            }
            // Colors
            this._effect.setColor4("vAlbedoColor", this.albedoColor, this.alpha * mesh.visibility);
            // View
            if (scene.fogEnabled && mesh.applyFog && scene.fogMode !== BABYLON.Scene.FOGMODE_NONE) {
                this._effect.setMatrix("view", scene.getViewMatrix());
            }
            // Fog
            if (scene.fogEnabled && mesh.applyFog && scene.fogMode !== BABYLON.Scene.FOGMODE_NONE) {
                this._effect.setFloat4("vFogInfos", scene.fogMode, scene.fogStart, scene.fogEnd, scene.fogDensity);
                this._effect.setColor3("vFogColor", scene.fogColor);
            }
            _super.prototype.bind.call(this, world, mesh);
        };
        PBRMaterial.prototype.getAnimatables = function () {
            var results = [];
            return results;
        };
        PBRMaterial.prototype.dispose = function (forceDisposeEffect) {
            _super.prototype.dispose.call(this, forceDisposeEffect);
        };
        PBRMaterial.prototype.clone = function (name) {
            var newPBRMaterial = new PBRMaterial(name, this.getScene());
            // Base material
            this.copyTo(newPBRMaterial);
            // PBRMaterial material
            newPBRMaterial.albedoColor = this.albedoColor.clone();
            return newPBRMaterial;
        };
        return PBRMaterial;
    })(BABYLON.Material);
    BABYLON.PBRMaterial = PBRMaterial;
})(BABYLON || (BABYLON = {}));