Babylon.js/Babylon/Materials/babylon.effect.js

var BABYLON;
(function (BABYLON) {
    var EffectFallbacks = (function () {
        function EffectFallbacks() {
            this._defines = {};
            this._currentRank = 32;
            this._maxRank = -1;
        }
        EffectFallbacks.prototype.addFallback = function (rank, define) {
            if (!this._defines[rank]) {
                if (rank < this._currentRank) {
                    this._currentRank = rank;
                }

                if (rank > this._maxRank) {
                    this._maxRank = rank;
                }

                this._defines[rank] = new Array();
            }

            this._defines[rank].push(define);
        };

        Object.defineProperty(EffectFallbacks.prototype, "isMoreFallbacks", {
            get: function () {
                return this._currentRank <= this._maxRank;
            },
            enumerable: true,
            configurable: true
        });

        EffectFallbacks.prototype.reduce = function (currentDefines) {
            var currentFallbacks = this._defines[this._currentRank];

            for (var index = 0; index < currentFallbacks.length; index++) {
                currentDefines = currentDefines.replace("#define " + currentFallbacks[index], "");
            }

            this._currentRank++;

            return currentDefines;
        };
        return EffectFallbacks;
    })();
    BABYLON.EffectFallbacks = EffectFallbacks;

    var Effect = (function () {
        function Effect(baseName, attributesNames, uniformsNames, samplers, engine, defines, fallbacks, onCompiled, onError) {
            var _this = this;
            this._isReady = false;
            this._compilationError = "";
            this._valueCache = [];
            this._engine = engine;
            this.name = baseName;
            this.defines = defines;
            this._uniformsNames = uniformsNames.concat(samplers);
            this._samplers = samplers;
            this._attributesNames = attributesNames;

            this.onError = onError;
            this.onCompiled = onCompiled;

            var vertexSource;
            var fragmentSource;

            if (baseName.vertexElement) {
                vertexSource = document.getElementById(baseName.vertexElement);

                if (!vertexSource) {
                    vertexSource = baseName.vertexElement;
                }
            } else {
                vertexSource = baseName.vertex || baseName;
            }

            if (baseName.fragmentElement) {
                fragmentSource = document.getElementById(baseName.fragmentElement);

                if (!fragmentSource) {
                    fragmentSource = baseName.fragmentElement;
                }
            } else {
                fragmentSource = baseName.fragment || baseName;
            }

            this._loadVertexShader(vertexSource, function (vertexCode) {
                _this._loadFragmentShader(fragmentSource, function (fragmentCode) {
                    _this._prepareEffect(vertexCode, fragmentCode, attributesNames, defines, fallbacks);
                });
            });
        }
        // Properties
        Effect.prototype.isReady = function () {
            return this._isReady;
        };

        Effect.prototype.getProgram = function () {
            return this._program;
        };

        Effect.prototype.getAttributesNames = function () {
            return this._attributesNames;
        };

        Effect.prototype.getAttributeLocation = function (index) {
            return this._attributes[index];
        };

        Effect.prototype.getAttributeLocationByName = function (name) {
            var index = this._attributesNames.indexOf(name);

            return this._attributes[index];
        };

        Effect.prototype.getAttributesCount = function () {
            return this._attributes.length;
        };

        Effect.prototype.getUniformIndex = function (uniformName) {
            return this._uniformsNames.indexOf(uniformName);
        };

        Effect.prototype.getUniform = function (uniformName) {
            return this._uniforms[this._uniformsNames.indexOf(uniformName)];
        };

        Effect.prototype.getSamplers = function () {
            return this._samplers;
        };

        Effect.prototype.getCompilationError = function () {
            return this._compilationError;
        };

        // Methods
        Effect.prototype._loadVertexShader = function (vertex, callback) {
            // DOM element ?
            if (vertex instanceof HTMLElement) {
                var vertexCode = BABYLON.Tools.GetDOMTextContent(vertex);
                callback(vertexCode);
                return;
            }

            // Is in local store ?
            if (BABYLON.Effect.ShadersStore[vertex + "VertexShader"]) {
                callback(BABYLON.Effect.ShadersStore[vertex + "VertexShader"]);
                return;
            }

            var vertexShaderUrl;

            if (vertex[0] === ".") {
                vertexShaderUrl = vertex;
            } else {
                vertexShaderUrl = BABYLON.Engine.ShadersRepository + vertex;
            }

            // Vertex shader
            BABYLON.Tools.LoadFile(vertexShaderUrl + ".vertex.fx", callback);
        };

        Effect.prototype._loadFragmentShader = function (fragment, callback) {
            // DOM element ?
            if (fragment instanceof HTMLElement) {
                var fragmentCode = BABYLON.Tools.GetDOMTextContent(fragment);
                callback(fragmentCode);
                return;
            }

            // Is in local store ?
            if (BABYLON.Effect.ShadersStore[fragment + "PixelShader"]) {
                callback(BABYLON.Effect.ShadersStore[fragment + "PixelShader"]);
                return;
            }

            if (BABYLON.Effect.ShadersStore[fragment + "FragmentShader"]) {
                callback(BABYLON.Effect.ShadersStore[fragment + "FragmentShader"]);
                return;
            }

            var fragmentShaderUrl;

            if (fragment[0] === ".") {
                fragmentShaderUrl = fragment;
            } else {
                fragmentShaderUrl = BABYLON.Engine.ShadersRepository + fragment;
            }

            // Fragment shader
            BABYLON.Tools.LoadFile(fragmentShaderUrl + ".fragment.fx", callback);
        };

        Effect.prototype._prepareEffect = function (vertexSourceCode, fragmentSourceCode, attributesNames, defines, fallbacks) {
            try  {
                var engine = this._engine;

                this._program = engine.createShaderProgram(vertexSourceCode, fragmentSourceCode, defines);

                this._uniforms = engine.getUniforms(this._program, this._uniformsNames);
                this._attributes = engine.getAttributes(this._program, attributesNames);

                for (var index = 0; index < this._samplers.length; index++) {
                    var sampler = this.getUniform(this._samplers[index]);

                    if (sampler == null) {
                        this._samplers.splice(index, 1);
                        index--;
                    }
                }

                engine.bindSamplers(this);

                this._isReady = true;
                if (this.onCompiled) {
                    this.onCompiled(this);
                }
            } catch (e) {
                // Is it a problem with precision?
                if (e.message.indexOf("highp") !== -1) {
                    vertexSourceCode = vertexSourceCode.replace("precision highp float", "precision mediump float");
                    fragmentSourceCode = fragmentSourceCode.replace("precision highp float", "precision mediump float");

                    this._prepareEffect(vertexSourceCode, fragmentSourceCode, attributesNames, defines, fallbacks);

                    return;
                }

                // Let's go through fallbacks then
                if (fallbacks && fallbacks.isMoreFallbacks) {
                    defines = fallbacks.reduce(defines);
                    this._prepareEffect(vertexSourceCode, fragmentSourceCode, attributesNames, defines, fallbacks);
                } else {
                    BABYLON.Tools.Error("Unable to compile effect: " + this.name);
                    BABYLON.Tools.Error("Defines: " + defines);
                    BABYLON.Tools.Error("Error: " + e.message);
                    this._compilationError = e.message;

                    if (this.onError) {
                        this.onError(this, this._compilationError);
                    }
                }
            }
        };

        Effect.prototype._bindTexture = function (channel, texture) {
            this._engine._bindTexture(this._samplers.indexOf(channel), texture);
        };

        Effect.prototype.setTexture = function (channel, texture) {
            this._engine.setTexture(this._samplers.indexOf(channel), texture);
        };

        Effect.prototype.setTextureFromPostProcess = function (channel, postProcess) {
            this._engine.setTextureFromPostProcess(this._samplers.indexOf(channel), postProcess);
        };

        //public _cacheMatrix(uniformName, matrix) {
        //    if (!this._valueCache[uniformName]) {
        //        this._valueCache[uniformName] = new BABYLON.Matrix();
        //    }
        //    for (var index = 0; index < 16; index++) {
        //        this._valueCache[uniformName].m[index] = matrix.m[index];
        //    }
        //};
        Effect.prototype._cacheFloat2 = function (uniformName, x, y) {
            if (!this._valueCache[uniformName]) {
                this._valueCache[uniformName] = [x, y];
                return;
            }

            this._valueCache[uniformName][0] = x;
            this._valueCache[uniformName][1] = y;
        };

        Effect.prototype._cacheFloat3 = function (uniformName, x, y, z) {
            if (!this._valueCache[uniformName]) {
                this._valueCache[uniformName] = [x, y, z];
                return;
            }

            this._valueCache[uniformName][0] = x;
            this._valueCache[uniformName][1] = y;
            this._valueCache[uniformName][2] = z;
        };

        Effect.prototype._cacheFloat4 = function (uniformName, x, y, z, w) {
            if (!this._valueCache[uniformName]) {
                this._valueCache[uniformName] = [x, y, z, w];
                return;
            }

            this._valueCache[uniformName][0] = x;
            this._valueCache[uniformName][1] = y;
            this._valueCache[uniformName][2] = z;
            this._valueCache[uniformName][3] = w;
        };

        Effect.prototype.setArray = function (uniformName, array) {
            this._engine.setArray(this.getUniform(uniformName), array);

            return this;
        };

        Effect.prototype.setMatrices = function (uniformName, matrices) {
            this._engine.setMatrices(this.getUniform(uniformName), matrices);

            return this;
        };

        Effect.prototype.setMatrix = function (uniformName, matrix) {
            //if (this._valueCache[uniformName] && this._valueCache[uniformName].equals(matrix))
            //    return;
            //this._cacheMatrix(uniformName, matrix);
            this._engine.setMatrix(this.getUniform(uniformName), matrix);

            return this;
        };

        Effect.prototype.setFloat = function (uniformName, value) {
            if (this._valueCache[uniformName] && this._valueCache[uniformName] === value)
                return this;

            this._valueCache[uniformName] = value;

            this._engine.setFloat(this.getUniform(uniformName), value);

            return this;
        };

        Effect.prototype.setBool = function (uniformName, bool) {
            if (this._valueCache[uniformName] && this._valueCache[uniformName] === bool)
                return this;

            this._valueCache[uniformName] = bool;

            this._engine.setBool(this.getUniform(uniformName), bool ? 1 : 0);

            return this;
        };

        Effect.prototype.setVector2 = function (uniformName, vector2) {
            if (this._valueCache[uniformName] && this._valueCache[uniformName][0] == vector2.x && this._valueCache[uniformName][1] == vector2.y)
                return this;

            this._cacheFloat2(uniformName, vector2.x, vector2.y);
            this._engine.setFloat2(this.getUniform(uniformName), vector2.x, vector2.y);

            return this;
        };

        Effect.prototype.setFloat2 = function (uniformName, x, y) {
            if (this._valueCache[uniformName] && this._valueCache[uniformName][0] == x && this._valueCache[uniformName][1] == y)
                return this;

            this._cacheFloat2(uniformName, x, y);
            this._engine.setFloat2(this.getUniform(uniformName), x, y);

            return this;
        };

        Effect.prototype.setVector3 = function (uniformName, vector3) {
            if (this._valueCache[uniformName] && this._valueCache[uniformName][0] == vector3.x && this._valueCache[uniformName][1] == vector3.y && this._valueCache[uniformName][2] == vector3.z)
                return this;

            this._cacheFloat3(uniformName, vector3.x, vector3.y, vector3.z);

            this._engine.setFloat3(this.getUniform(uniformName), vector3.x, vector3.y, vector3.z);

            return this;
        };

        Effect.prototype.setFloat3 = function (uniformName, x, y, z) {
            if (this._valueCache[uniformName] && this._valueCache[uniformName][0] == x && this._valueCache[uniformName][1] == y && this._valueCache[uniformName][2] == z)
                return this;

            this._cacheFloat3(uniformName, x, y, z);
            this._engine.setFloat3(this.getUniform(uniformName), x, y, z);

            return this;
        };

        Effect.prototype.setFloat4 = function (uniformName, x, y, z, w) {
            if (this._valueCache[uniformName] && this._valueCache[uniformName][0] == x && this._valueCache[uniformName][1] == y && this._valueCache[uniformName][2] == z && this._valueCache[uniformName][3] == w)
                return this;

            this._cacheFloat4(uniformName, x, y, z, w);
            this._engine.setFloat4(this.getUniform(uniformName), x, y, z, w);

            return this;
        };

        Effect.prototype.setColor3 = function (uniformName, color3) {
            if (this._valueCache[uniformName] && this._valueCache[uniformName][0] == color3.r && this._valueCache[uniformName][1] == color3.g && this._valueCache[uniformName][2] == color3.b)
                return this;

            this._cacheFloat3(uniformName, color3.r, color3.g, color3.b);
            this._engine.setColor3(this.getUniform(uniformName), color3);

            return this;
        };

        Effect.prototype.setColor4 = function (uniformName, color3, alpha) {
            if (this._valueCache[uniformName] && this._valueCache[uniformName][0] == color3.r && this._valueCache[uniformName][1] == color3.g && this._valueCache[uniformName][2] == color3.b && this._valueCache[uniformName][3] == alpha)
                return this;

            this._cacheFloat4(uniformName, color3.r, color3.g, color3.b, alpha);
            this._engine.setColor4(this.getUniform(uniformName), color3, alpha);

            return this;
        };

        Effect.ShadersStore = {};
        return Effect;
    })();
    BABYLON.Effect = Effect;
})(BABYLON || (BABYLON = {}));
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