tmp

src/render/math/Mat4.ts

@@ -5,6 +5,10 @@ export class mat4 {
 
     public values = new Float32Array(16);
 
+    public static identity = new mat4().setIdentity();
+    public static m0 = new mat4();
+    public static m1 = new mat4();
+
     public constructor(values: number[] | null = null) {
         if (values) {
             this.set(values);
@@ -393,4 +397,304 @@ export class mat4 {
 
         return dest;
     }
+
+
+    /**
+     * 矩阵平移
+     * @param vector 
+     * @returns 
+     */
+    public translate(vector: vec3): mat4 {
+        let x = vector.x,
+            y = vector.y,
+            z = vector.z;
+
+        this.values[12] += this.values[0] * x + this.values[4] * y + this.values[8] * z;
+        this.values[13] += this.values[1] * x + this.values[5] * y + this.values[9] * z;
+        this.values[14] += this.values[2] * x + this.values[6] * y + this.values[10] * z;
+        this.values[15] += this.values[3] * x + this.values[7] * y + this.values[11] * z;
+
+        return this;
+    }
+
+    /**
+     * 矩阵缩放
+     * @param vector 
+     * @returns 
+     */
+    public scale(vector: vec3): mat4 {
+        let x = vector.x,
+            y = vector.y,
+            z = vector.z;
+
+        this.values[0] *= x;
+        this.values[1] *= x;
+        this.values[2] *= x;
+        this.values[3] *= x;
+
+        this.values[4] *= y;
+        this.values[5] *= y;
+        this.values[6] *= y;
+        this.values[7] *= y;
+
+        this.values[8] *= z;
+        this.values[9] *= z;
+        this.values[10] *= z;
+        this.values[11] *= z;
+
+        return this;
+    }
+
+    /**
+     * 矩阵旋转
+     * @param angle 
+     * @param axis 
+     * @returns 
+     */
+    public rotate(angle: number, axis: vec3): mat4 | null {
+        let x = axis.x,
+            y = axis.y,
+            z = axis.z;
+
+        let length = Math.sqrt(x * x + y * y + z * z);
+
+        if (!length)
+            return null;
+
+        if (length !== 1) {
+            length = 1 / length;
+            x *= length;
+            y *= length;
+            z *= length;
+        }
+
+        let s = Math.sin(angle);
+        let c = Math.cos(angle);
+
+        let t = 1.0 - c;
+
+        let a00 = this.values[0], a01 = this.values[1], a02 = this.values[2], a03 = this.values[3],
+            a10 = this.values[4], a11 = this.values[5], a12 = this.values[6], a13 = this.values[7],
+            a20 = this.values[8], a21 = this.values[9], a22 = this.values[10], a23 = this.values[11];
+
+        let b00 = x * x * t + c, b01 = y * x * t + z * s, b02 = z * x * t - y * s,
+            b10 = x * y * t - z * s, b11 = y * y * t + c, b12 = z * y * t + x * s,
+            b20 = x * z * t + y * s, b21 = y * z * t - x * s, b22 = z * z * t + c;
+
+        this.values[0] = a00 * b00 + a10 * b01 + a20 * b02;
+        this.values[1] = a01 * b00 + a11 * b01 + a21 * b02;
+        this.values[2] = a02 * b00 + a12 * b01 + a22 * b02;
+        this.values[3] = a03 * b00 + a13 * b01 + a23 * b02;
+
+        this.values[4] = a00 * b10 + a10 * b11 + a20 * b12;
+        this.values[5] = a01 * b10 + a11 * b11 + a21 * b12;
+        this.values[6] = a02 * b10 + a12 * b11 + a22 * b12;
+        this.values[7] = a03 * b10 + a13 * b11 + a23 * b12;
+
+        this.values[8] = a00 * b20 + a10 * b21 + a20 * b22;
+        this.values[9] = a01 * b20 + a11 * b21 + a21 * b22;
+        this.values[10] = a02 * b20 + a12 * b21 + a22 * b22;
+        this.values[11] = a03 * b20 + a13 * b21 + a23 * b22;
+
+        return this;
+    }
+
+    /**
+     * 生成一个视锥体矩阵矩阵
+     * @param left 
+     * @param right 
+     * @param bottom 
+     * @param top 
+     * @param near 
+     * @param far 
+     * @returns 
+     */
+    public static frustum(left: number, right: number, bottom: number, top: number, near: number, far: number): mat4 {
+        let rl = (right - left),
+            tb = (top - bottom),
+            fn = (far - near);
+
+        return new mat4([
+            (near * 2) / rl,
+            0,
+            0,
+            0,
+
+            0,
+            (near * 2) / tb,
+            0,
+            0,
+
+            (right + left) / rl,
+            (top + bottom) / tb,
+            -(far + near) / fn,
+            -1,
+
+            0,
+            0,
+            -(far * near * 2) / fn,
+            0
+        ]);
+    }
+
+
+    /**
+     * 生成一个透视投影矩阵
+     * @param fov 
+     * @param aspect 
+     * @param near 
+     * @param far 
+     * @returns 
+     */
+    public static perspective(fov: number, aspect: number, near: number, far: number): mat4 {
+        let top = near * Math.tan(fov * 0.5),
+            right = top * aspect;
+
+        return mat4.frustum(-right, right, -top, top, near, far);
+    }
+
+    /**
+     * 生成一个正交投影矩阵
+     * @param left 
+     * @param right 
+     * @param bottom 
+     * @param top 
+     * @param near 
+     * @param far 
+     * @returns 
+     */
+    public static orthographic(left: number, right: number, bottom: number, top: number, near: number, far: number): mat4 {
+        let rl = (right - left),
+            tb = (top - bottom),
+            fn = (far - near);
+
+        return new mat4([
+            2 / rl,
+            0,
+            0,
+            0,
+
+            0,
+            2 / tb,
+            0,
+            0,
+
+            0,
+            0,
+            -2 / fn,
+            0,
+
+            -(left + right) / rl,
+            -(top + bottom) / tb,
+            -(far + near) / fn,
+            1
+        ]);
+    }
+
+    /**
+     * 生成一个视图矩阵
+     * @param position 
+     * @param target 
+     * @param up 
+     * @returns 
+     */
+    public static lookAt(position: vec3, target: vec3, up: vec3 = vec3.up): mat4 {
+        if (position.equals(target)) {
+            return this.identity;
+        }
+
+        let z = vec3.difference(position, target).normalize();
+        let x = vec3.cross(up, z).normalize();
+        let y = vec3.cross(z, x).normalize();
+
+        return new mat4([
+            x.x,
+            y.x,
+            z.x,
+            0,
+
+            x.y,
+            y.y,
+            z.y,
+            0,
+
+            x.z,
+            y.z,
+            z.z,
+            0,
+
+            -vec3.dot(x, position),
+            -vec3.dot(y, position),
+            -vec3.dot(z, position),
+            1
+        ]);
+    }
+
+    /**
+     * ??????
+     * @param m1 
+     * @param m2 
+     * @param result 
+     * @returns 
+     */
+    public static product(m1: mat4, m2: mat4, result: mat4 | null = null): mat4 {
+        let a00 = m1.at(0), a01 = m1.at(1), a02 = m1.at(2), a03 = m1.at(3),
+            a10 = m1.at(4), a11 = m1.at(5), a12 = m1.at(6), a13 = m1.at(7),
+            a20 = m1.at(8), a21 = m1.at(9), a22 = m1.at(10), a23 = m1.at(11),
+            a30 = m1.at(12), a31 = m1.at(13), a32 = m1.at(14), a33 = m1.at(15);
+
+        let b00 = m2.at(0), b01 = m2.at(1), b02 = m2.at(2), b03 = m2.at(3),
+            b10 = m2.at(4), b11 = m2.at(5), b12 = m2.at(6), b13 = m2.at(7),
+            b20 = m2.at(8), b21 = m2.at(9), b22 = m2.at(10), b23 = m2.at(11),
+            b30 = m2.at(12), b31 = m2.at(13), b32 = m2.at(14), b33 = m2.at(15);
+
+        if (result) {
+            result.set([
+                b00 * a00 + b01 * a10 + b02 * a20 + b03 * a30,
+                b00 * a01 + b01 * a11 + b02 * a21 + b03 * a31,
+                b00 * a02 + b01 * a12 + b02 * a22 + b03 * a32,
+                b00 * a03 + b01 * a13 + b02 * a23 + b03 * a33,
+
+                b10 * a00 + b11 * a10 + b12 * a20 + b13 * a30,
+                b10 * a01 + b11 * a11 + b12 * a21 + b13 * a31,
+                b10 * a02 + b11 * a12 + b12 * a22 + b13 * a32,
+                b10 * a03 + b11 * a13 + b12 * a23 + b13 * a33,
+
+                b20 * a00 + b21 * a10 + b22 * a20 + b23 * a30,
+                b20 * a01 + b21 * a11 + b22 * a21 + b23 * a31,
+                b20 * a02 + b21 * a12 + b22 * a22 + b23 * a32,
+                b20 * a03 + b21 * a13 + b22 * a23 + b23 * a33,
+
+                b30 * a00 + b31 * a10 + b32 * a20 + b33 * a30,
+                b30 * a01 + b31 * a11 + b32 * a21 + b33 * a31,
+                b30 * a02 + b31 * a12 + b32 * a22 + b33 * a32,
+                b30 * a03 + b31 * a13 + b32 * a23 + b33 * a33
+            ]);
+
+            return result;
+        }
+        else {
+            return new mat4([
+                b00 * a00 + b01 * a10 + b02 * a20 + b03 * a30,
+                b00 * a01 + b01 * a11 + b02 * a21 + b03 * a31,
+                b00 * a02 + b01 * a12 + b02 * a22 + b03 * a32,
+                b00 * a03 + b01 * a13 + b02 * a23 + b03 * a33,
+
+                b10 * a00 + b11 * a10 + b12 * a20 + b13 * a30,
+                b10 * a01 + b11 * a11 + b12 * a21 + b13 * a31,
+                b10 * a02 + b11 * a12 + b12 * a22 + b13 * a32,
+                b10 * a03 + b11 * a13 + b12 * a23 + b13 * a33,
+
+                b20 * a00 + b21 * a10 + b22 * a20 + b23 * a30,
+                b20 * a01 + b21 * a11 + b22 * a21 + b23 * a31,
+                b20 * a02 + b21 * a12 + b22 * a22 + b23 * a32,
+                b20 * a03 + b21 * a13 + b22 * a23 + b23 * a33,
+
+                b30 * a00 + b31 * a10 + b32 * a20 + b33 * a30,
+                b30 * a01 + b31 * a11 + b32 * a21 + b33 * a31,
+                b30 * a02 + b31 * a12 + b32 * a22 + b33 * a32,
+                b30 * a03 + b31 * a13 + b32 * a23 + b33 * a33
+            ]);
+        }
+    }
 }

src/render/math/Quat.ts

@@ -0,0 +1,470 @@
+import { EPSILON } from "../common";
+import { vec3, vec4, mat4 } from ".";
+
+export class quat {
+
+    public values = new Float32Array(4);
+
+    static identity = new quat().setIdentity();
+    static q0 = new quat();
+    static q1 = new quat();
+    static q2 = new quat();
+
+    public get x(): number {
+        return this.values[0];
+    }
+
+    public get y(): number {
+        return this.values[1];
+    }
+
+    public get z(): number {
+        return this.values[2];
+    }
+
+    public get w(): number {
+        return this.values[3];
+    }
+
+    public set x(value: number) {
+        this.values[0] = value;
+    }
+
+    public set y(value: number) {
+        this.values[1] = value;
+    }
+
+    public set z(value: number) {
+        this.values[2] = value;
+    }
+
+    public set w(value: number) {
+        this.values[3] = value;
+    }
+
+    public constructor() {
+        this.setIdentity();
+    }
+
+    /**
+     * 设置一个标准四元数
+     * @returns 
+     */
+    public setIdentity(): quat {
+        this.x = 0;
+        this.y = 0;
+        this.z = 0;
+        this.w = 1;
+
+        return this;
+    }
+
+    public at(index: number): number {
+        return this.values[index];
+    }
+
+    /**
+     * 重置
+     */
+    public reset(): void {
+        for (let i = 0; i < 4; i++) {
+            this.values[i] = 0;
+        }
+    }
+
+    public copy(dest: quat | null = null): quat {
+        if (!dest) dest = new quat();
+
+        for (let i = 0; i < 4; i++) {
+            dest.values[i] = this.values[i];
+        }
+
+        return dest;
+    }
+
+    public roll(): number {
+        let x = this.x,
+            y = this.y,
+            z = this.z,
+            w = this.w;
+
+        return Math.atan2(2.0 * (x * y + w * z), w * w + x * x - y * y - z * z);
+    }
+
+    public pitch(): number {
+        let x = this.x,
+            y = this.y,
+            z = this.z,
+            w = this.w;
+
+        return Math.atan2(2.0 * (y * z + w * x), w * w - x * x - y * y + z * z);
+    }
+
+    public yaw(): number {
+        return Math.asin(2.0 * (this.x * this.z - this.w * this.y));
+    }
+
+    /**
+     * 判断是否相等
+     * @param vector 
+     * @param threshold 
+     * @returns 
+     */
+    public equals(vector: quat, threshold = EPSILON): boolean {
+        for (let i = 0; i < 4; i++) {
+            if (Math.abs(this.values[i] - vector.at(i)) > threshold)
+                return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * 计算W
+     * @returns 
+     */
+    public calculateW(): quat {
+        let x = this.x,
+            y = this.y,
+            z = this.z;
+
+        this.w = -(Math.sqrt(Math.abs(1.0 - x * x - y * y - z * z)));
+
+        return this;
+    }
+
+    /**
+     * 四元数点乘
+     * @param q1 
+     * @param q2 
+     * @returns 
+     */
+    public static dot(q1: quat, q2: quat): number {
+        return q1.x * q2.x + q1.y * q2.y + q1.z * q2.z + q1.w * q2.w;
+    }
+
+    /**
+     * 四元数求逆
+     * @returns 
+     */
+    public inverse(): quat {
+        let dot = quat.dot(this, this);
+
+        if (!dot) {
+            this.setIdentity();
+            return this;
+        }
+
+        let invDot = dot ? 1.0 / dot : 0;
+
+        this.x *= -invDot;
+        this.y *= -invDot;
+        this.z *= -invDot;
+        this.w *= invDot;
+
+        return this;
+    }
+
+    public conjugate(): quat {
+        this.values[0] *= -1;
+        this.values[1] *= -1;
+        this.values[2] *= -1;
+
+        return this;
+    }
+
+    /**
+     * 四元数求模
+     * @returns 
+     */
+    public length(): number {
+        let x = this.x,
+            y = this.y,
+            z = this.z,
+            w = this.w;
+
+        return Math.sqrt(x * x + y * y + z * z + w * w);
+    }
+
+    public normalize(dest: quat | null = null): quat {
+        if (!dest) dest = this;
+
+        let x = this.x,
+            y = this.y,
+            z = this.z,
+            w = this.w;
+
+        let length = Math.sqrt(x * x + y * y + z * z + w * w);
+
+        if (!length) {
+            dest.x = 0;
+            dest.y = 0;
+            dest.z = 0;
+            dest.w = 0;
+
+            return dest;
+        }
+
+        length = 1 / length;
+
+        dest.x = x * length;
+        dest.y = y * length;
+        dest.z = z * length;
+        dest.w = w * length;
+
+        return dest;
+    }
+
+    public add(other: quat): quat {
+        for (let i = 0; i < 4; i++) {
+            this.values[i] += other.at(i);
+        }
+
+        return this;
+    }
+
+    // 这个是左到右结合 this.cross.other
+    public multiply(other: quat): quat {
+        let q1x = this.values[0],
+            q1y = this.values[1],
+            q1z = this.values[2],
+            q1w = this.values[3];
+
+        let q2x = other.x,
+            q2y = other.y,
+            q2z = other.z,
+            q2w = other.w;
+
+        this.x = q1x * q2w + q1w * q2x + q1y * q2z - q1z * q2y;
+        this.y = q1y * q2w + q1w * q2y + q1z * q2x - q1x * q2z;
+        this.z = q1z * q2w + q1w * q2z + q1x * q2y - q1y * q2x;
+        this.w = q1w * q2w - q1x * q2x - q1y * q2y - q1z * q2z;
+
+        return this;
+    }
+
+
+    /**
+     * 四元数乘以向量
+     * @param vector 
+     * @param dest 
+     * @returns 
+     */
+    public multiplyVec3(vector: vec3, dest: vec3 | null = null): vec3 {
+        if (!dest) dest = new vec3();
+
+        let x = vector.x,
+            y = vector.y,
+            z = vector.z;
+
+        let qx = this.x,
+            qy = this.y,
+            qz = this.z,
+            qw = this.w;
+
+        //
+        let ix = qw * x + qy * z - qz * y,
+            iy = qw * y + qz * x - qx * z,
+            iz = qw * z + qx * y - qy * x,
+            iw = -qx * x - qy * y - qz * z;
+
+        dest.x = ix * qw + iw * -qx + iy * -qz - iz * -qy;
+        dest.y = iy * qw + iw * -qy + iz * -qx - ix * -qz;
+        dest.z = iz * qw + iw * -qz + ix * -qy - iy * -qx;
+
+        return dest;
+    }
+
+    public toMat4(dest: mat4 | null = null): mat4 {
+        if (!dest) dest = new mat4();
+
+        let x = this.x,
+            y = this.y,
+            z = this.z,
+            w = this.w,
+
+            x2 = x + x,
+            y2 = y + y,
+            z2 = z + z,
+
+            xx = x * x2,
+            xy = x * y2,
+            xz = x * z2,
+            yy = y * y2,
+            yz = y * z2,
+            zz = z * z2,
+            wx = w * x2,
+            wy = w * y2,
+            wz = w * z2;
+
+        dest.set([
+            1 - (yy + zz),
+            xy + wz,
+            xz - wy,
+            0,
+
+            (xy - wz),
+            (1 - (xx + zz)),
+            (yz + wx),
+            0,
+
+            xz + wy,
+            yz - wx,
+            1 - (xx + yy),
+            0,
+
+            0,
+            0,
+            0,
+            1
+        ]);
+
+        return dest;
+    }
+
+    public static sum(q1: quat, q2: quat, dest: quat | null = null): quat {
+        if (!dest) dest = new quat();
+
+        dest.x = q1.x + q2.x;
+        dest.y = q1.y + q2.y;
+        dest.z = q1.z + q2.z;
+        dest.w = q1.w + q2.w;
+
+        return dest;
+    }
+
+    public static product(q1: quat, q2: quat, dest: quat | null = null): quat {
+        if (!dest) dest = new quat();
+
+        let q1x = q1.x,
+            q1y = q1.y,
+            q1z = q1.z,
+            q1w = q1.w,
+
+            q2x = q2.x,
+            q2y = q2.y,
+            q2z = q2.z,
+            q2w = q2.w;
+
+        dest.x = q1x * q2w + q1w * q2x + q1y * q2z - q1z * q2y;
+        dest.y = q1y * q2w + q1w * q2y + q1z * q2x - q1x * q2z;
+        dest.z = q1z * q2w + q1w * q2z + q1x * q2y - q1y * q2x;
+        dest.w = q1w * q2w - q1x * q2x - q1y * q2y - q1z * q2z;
+
+        return dest;
+    }
+
+    public static cross(q1: quat, q2: quat, dest: quat | null = null): quat {
+        if (!dest) dest = new quat();
+
+        let q1x = q1.x,
+            q1y = q1.y,
+            q1z = q1.z,
+            q1w = q1.w,
+
+            q2x = q2.x,
+            q2y = q2.y,
+            q2z = q2.z,
+            q2w = q2.w;
+
+        dest.x = q1w * q2z + q1z * q2w + q1x * q2y - q1y * q2x;
+        dest.y = q1w * q2w - q1x * q2x - q1y * q2y - q1z * q2z;
+        dest.z = q1w * q2x + q1x * q2w + q1y * q2z - q1z * q2y;
+        dest.w = q1w * q2y + q1y * q2w + q1z * q2x - q1x * q2z;
+
+        return dest;
+    }
+
+    public static shortMix(q1: quat, q2: quat, time: number, dest: quat | null = null): quat {
+        if (!dest) dest = new quat();
+
+        if (time <= 0.0) {
+            q1.copy(q1);
+
+            return dest;
+        } else if (time >= 1.0) {
+            q2.copy(dest);
+
+            return dest;
+        }
+
+        let cos = quat.dot(q1, q2),
+            q2a = q2.copy();
+
+        if (cos < 0.0) {
+            q2a.inverse();
+            cos = -cos;
+        }
+
+        let k0: number,
+            k1: number;
+
+        if (cos > 0.9999) {
+            k0 = 1 - time;
+            k1 = 0 + time;
+        }
+        else {
+            let sin: number = Math.sqrt(1 - cos * cos);
+            let angle: number = Math.atan2(sin, cos);
+
+            let oneOverSin: number = 1 / sin;
+
+            k0 = Math.sin((1 - time) * angle) * oneOverSin;
+            k1 = Math.sin((0 + time) * angle) * oneOverSin;
+        }
+
+        dest.x = k0 * q1.x + k1 * q2a.x;
+        dest.y = k0 * q1.y + k1 * q2a.y;
+        dest.z = k0 * q1.z + k1 * q2a.z;
+        dest.w = k0 * q1.w + k1 * q2a.w;
+
+        return dest;
+    }
+
+    public static mix(q1: quat, q2: quat, time: number, dest: quat | null = null): quat {
+        if (!dest) dest = new quat();
+
+        let cosHalfTheta = q1.x * q2.x + q1.y * q2.y + q1.z * q2.z + q1.w * q2.w;
+
+        if (Math.abs(cosHalfTheta) >= 1.0) {
+            q1.copy(dest);
+            return dest;
+        }
+
+        let halfTheta = Math.acos(cosHalfTheta),
+            sinHalfTheta = Math.sqrt(1.0 - cosHalfTheta * cosHalfTheta);
+
+        if (Math.abs(sinHalfTheta) < 0.001) {
+            dest.x = q1.x * 0.5 + q2.x * 0.5;
+            dest.y = q1.y * 0.5 + q2.y * 0.5;
+            dest.z = q1.z * 0.5 + q2.z * 0.5;
+            dest.w = q1.w * 0.5 + q2.w * 0.5;
+
+            return dest;
+        }
+
+        let ratioA = Math.sin((1 - time) * halfTheta) / sinHalfTheta,
+            ratioB = Math.sin(time * halfTheta) / sinHalfTheta;
+
+        dest.x = q1.x * ratioA + q2.x * ratioB;
+        dest.y = q1.y * ratioA + q2.y * ratioB;
+        dest.z = q1.z * ratioA + q2.z * ratioB;
+        dest.w = q1.w * ratioA + q2.w * ratioB;
+
+        return dest;
+    }
+
+    static fromAxis(axis: vec3, angle: number, dest: quat | null = null): quat {
+        if (!dest) dest = new quat();
+
+        angle *= 0.5;
+        let sin = Math.sin(angle);
+
+        dest.x = axis.x * sin;
+        dest.y = axis.y * sin;
+        dest.z = axis.z * sin;
+        dest.w = Math.cos(angle);
+
+        return dest;
+    }
+}

src/render/math/TSM.ts

@@ -920,6 +920,14 @@ export class mat4
         ] );
     }
 
+    /**
+     * 生成一个透视投影矩阵
+     * @param fov 
+     * @param aspect 
+     * @param near 
+     * @param far 
+     * @returns 
+     */
     public static perspective ( fov: number, aspect: number, near: number, far: number ): mat4
     {
         let top = near * Math.tan( fov * 0.5 ),

src/render/math/index.ts

@@ -1,3 +1,5 @@
 export * from './Vec2';
 export * from './Vec3';
-export * from './Vec4';
+export * from './Vec4';
+export * from './Mat4';
+export * from './Quat';

src/render/webgl/WebGLAttribState.ts

@@ -0,0 +1,47 @@
+export type GLAttribBits = number;
+export type GLAttribOffsetMap = { [key: string]: number };
+
+export class GLAttribState {
+
+    public static readonly POSITION_BIT: number = (1 << 0);
+    public static readonly POSITION_COMPONENT: number = 3;
+    public static readonly POSITION_NAME: string = "aPosition";
+    public static readonly POSITION_LOCATION: number = 0;
+
+    public static readonly TEXCOORD_BIT: number = (1 << 1);
+    public static readonly TEXCOORD_COMPONENT: number = 2;
+    public static readonly TEXCOORD_NAME: string = "aTexCoord";
+    public static readonly TEXCOORD_LOCATION: number = 1;
+
+    public static readonly TEXCOORD1_BIT: number = (1 << 2);
+    public static readonly TEXCOORD1_COMPONENT: number = 2;
+    public static readonly TEXCOORD1_NAME: string = "aTexCoord1";
+    public static readonly TEXCOORD1_LOCATION: number = 2;
+
+    public static readonly NORMAL_BIT: number = (1 << 3);
+    public static readonly NORMAL_COMPONENT: number = 3;
+    public static readonly NORMAL_NAME: string = "aNormal";
+    public static readonly NORMAL_LOCATION: number = 3;
+
+    public static readonly TANGENT_BIT: number = (1 << 4);
+    public static readonly TANGENT_COMPONENT: number = 4;
+    public static readonly TANGENT_NAME: string = "aTangent";
+    public static readonly TANGENT_LOCATION: number = 4;
+
+    public static readonly COLOR_BIT: number = (1 << 5);
+    public static readonly COLOR_COMPONENT: number = 4;
+    public static readonly COLOR_NAME: string = "aColor";
+    public static readonly COLOR_LOCATION: number = 5;
+
+    public static readonly ATTRIBSTRIDE: string = "STRIDE";
+    public static readonly ATTRIBBYTELENGTH: string = "BYTELENGTH";
+
+    public static readonly FLOAT32_SIZE = Float32Array.BYTES_PER_ELEMENT;
+    public static readonly UINT16_SIZE = Uint16Array.BYTES_PER_ELEMENT;
+
+    public static makeVertexAttribs(useTexcoord0: boolean, useTexcoord1: boolean, useNormal: boolean, useTangent: boolean, useColor: boolean): GLAttribBits {
+        let bits: GLAttribBits = GLAttribState.POSITION_BIT; // 总是要使用位置属性
+
+        return bits;
+    }
+}