增加webgl优化

src/core/Entity.ts

@@ -386,7 +386,7 @@ export class Entity extends HashObject {
 	 */
 	getComponents(clazz: any): any[] {
 		return this._components.filter((component: any) => {
-			return typeof clazz === 'string' ? component.constructor.__class__ === clazz : component instanceof clazz;
+			return typeof clazz === 'string' ? component.constructor.name === clazz : component instanceof clazz;
 		});
 	}
 

src/core/ScillaComponent.ts

@@ -3,8 +3,8 @@
  */
 
 import HashObject from "./HashObject";
-import {Entity, } from "./Entity";
-import {EngineConfig} from "../engine-config";
+import { Entity, } from "./Entity";
+import { EngineConfig } from "../engine-config";
 
 const interactiveMap = [
 	'_dealGlobalTouchBegin',
@@ -80,36 +80,36 @@ export class ScillaComponent extends HashObject {
 	/**
 	 * 当组件生效时
 	 */
-	onEnable(){
+	onEnable() {
 
 	}
 
 	/**
 	 * 当组件失效时
 	 */
-	onDisable(){
+	onDisable() {
 
 	}
 
 	$onUpdate(t) {
 		this.onUpdate(t);
 
-		if(!this._firstUpdate){
+		if (!this._firstUpdate) {
 			this.invokeDelayCallback(t);
 		}
 		this._firstUpdate = false;
 	}
 
-	private invokeDelayCallback(t){
+	private invokeDelayCallback(t) {
 		const removed = [];
 		for (let i = 0, li = this.delayCallbacks.length; i < li; i++) {
-			let {callback, once} = this.delayCallbacks[i];
-			if(once){
+			let { callback, once } = this.delayCallbacks[i];
+			if (once) {
 				removed.push(i);
 			}
 			callback.call(this, t);
 		}
-		for(let item of removed){
+		for (let item of removed) {
 			this.delayCallbacks.splice(item, 1);
 		}
 	}
@@ -149,14 +149,14 @@ export class ScillaComponent extends HashObject {
 	 * @param key
 	 * @param oldValue
 	 */
-	protected onModify(value, key, oldValue){
+	protected onModify(value, key, oldValue) {
 
 	}
 
-	private getDelayCallback(callback){
+	private getDelayCallback(callback) {
 		let result;
-		for(let item of this.delayCallbacks){
-			if(item.callback == callback){
+		for (let item of this.delayCallbacks) {
+			if (item.callback == callback) {
 				result = item;
 				break;
 			}
@@ -172,14 +172,14 @@ export class ScillaComponent extends HashObject {
 	callOnNextTick(callback, once = true) {
 		const item = this.getDelayCallback(callback);
 		if (!item) {
-			this.delayCallbacks.push({callback, once});
+			this.delayCallbacks.push({ callback, once });
 		}
 	}
 
-	cancelOnNextTick(callback){
+	cancelOnNextTick(callback) {
 		const item = this.getDelayCallback(callback);
 		const index = this.delayCallbacks.indexOf(item);
-		if(index >= 0){
+		if (index >= 0) {
 			this.delayCallbacks.splice(index, 1);
 		}
 	}
@@ -233,9 +233,15 @@ export class ScillaComponent extends HashObject {
 	onGlobalTouchEnd(e) {
 
 	}
-
-	get transform(){
-		return this.entity.getComponent('components/base/Transform');
+	private _transform;
+	get transform() {
+		if (!this._transform) {
+			this._transform = this.entity.getComponent('Transform');
+			return this._transform
+		} else {
+			return this._transform
+		}
+		// return this.entity.getComponent('Transform');
 	}
 
 	/**

src/core/Texture.ts

@@ -4,7 +4,7 @@
 
 import Bounds from "../support/Bounds";
 import HashObject from "../core/HashObject";
-import {createCanvas} from "./context/RenderContext";
+// import {createCanvas} from "./context/RenderContext";
 
 /**
  * 纹理类
@@ -20,14 +20,36 @@ export default class Texture extends HashObject {
 
 		this.bounds = new Bounds();
 	}
-
+	/**
+	 * 原图img上的纹理坐标，归一处理，左上角顺时针开始
+	 */
+	uvs = [0, 65535, -1, -65536]
 	/**
 	 * 设置图集中的坐标和尺寸
 	 * @param frame
 	 */
 	setFrame(frame) {
-		let {x, y, w, h} = frame;
+		let { x, y, w, h } = frame;
 		this.bounds.setTo(x, y, w, h);
+
+		if (!this.img.complete && !(this.img instanceof HTMLCanvasElement)) return
+		let { width, height } = this.img;
+		var x0 = x / width;
+		var y0 = y / height;
+
+		var x1 = (x + w) / width;
+		var y1 = y / height;
+
+		var x2 = (x + w) / width;
+		var y2 = (y + h) / height;
+
+		var x3 = x / width;
+		var y3 = (y + h) / height;
+
+		this.uvs[0] = (((y0 * 65535) & 0xFFFF) << 16) | ((x0 * 65535) & 0xFFFF);
+		this.uvs[1] = (((y1 * 65535) & 0xFFFF) << 16) | ((x1 * 65535) & 0xFFFF);
+		this.uvs[2] = (((y2 * 65535) & 0xFFFF) << 16) | ((x2 * 65535) & 0xFFFF);
+		this.uvs[3] = (((y3 * 65535) & 0xFFFF) << 16) | ((x3 * 65535) & 0xFFFF);
 	}
 
 	/**
@@ -36,6 +58,12 @@ export default class Texture extends HashObject {
 	 */
 	setImg(img) {
 		this.img = img;
+
+		//暂时全放img
+		this.img._glTextures = {};
+		this.img._enabled = 0;
+		this.img._virtalBoundId = -1;
+		this.img.touched = 0;
 	}
 
 	/**
@@ -56,11 +84,11 @@ export default class Texture extends HashObject {
 	 * 产生一个缓存画布
 	 */
 	getCacheCanvas() {
-		const {width, height} = this.bounds;
+		const { width, height } = this.bounds;
 
 		let canvas = this._cacheCanvas;
 		if (!canvas) {
-			canvas = this._cacheCanvas = createCanvas();
+			canvas = this._cacheCanvas = document.createElement("canvas");
 		}
 		canvas.width = width;
 		canvas.height = height;
@@ -82,7 +110,7 @@ export default class Texture extends HashObject {
 	 * @param dh
 	 */
 	drawToCanvas(context, dx = 0, dy = 0, sx?, sy?, dw?, dh?) {
-		const {x, y, width, height} = this.bounds;
+		const { x, y, width, height } = this.bounds;
 		context.drawImage(this.img, sx || x, sy || y, width, height, dx, dy, dw || width, dh || height);
 	}
 
@@ -99,7 +127,7 @@ export default class Texture extends HashObject {
 	/**
 	 * 销毁缓存画布
 	 */
-	destroyCacheCanvas(){
+	destroyCacheCanvas() {
 		this._cacheCanvas = null;
 	}
 }
@@ -112,7 +140,7 @@ export default class Texture extends HashObject {
 export function createTexture(img, frame?): Texture {
 	const texture = new Texture();
 	texture.setImg(img);
-	texture.setFrame(frame || {x: 0, y: 0, w: img.width, h: img.height});
+	texture.setFrame(frame || { x: 0, y: 0, w: img.width, h: img.height });
 
 	return texture;
 }

src/core/context/RenderContextGL.ts

+/**
+ * Created by rockyl on 2018/11/5.
+ *
+ * 渲染上下文
+ */
+
+import { updateScaleMode } from "./InteractContext";
+import Bounds from "../../support/Bounds";
+
+let _canvas, context, width, height;
+
+let scaleX, scaleY, rotation = 0;
+
+let _designWidth, _designHeight, _scaleMode, _modifyCanvasSize;
+
+let shortcutCanvas;
+
+let renderStyle = "canvas"
+/**
+ * 缩放模式
+ *
+ * SHOW_ALL: 全可见
+ * FIXED_WIDTH: 宽度固定
+ * FIXED_HEIGHT: 高度固定
+ */
+export const ScaleMode = {
+	SHOW_ALL: 'showAll',
+	FIXED_WIDTH: 'fixedWidth',
+	FIXED_HEIGHT: 'fixedHeight',
+};
+
+/**
+ * 装配上下文
+ * @param options
+ */
+export function setupContext(options: any = {}) {
+	const { canvas, designWidth, designHeight, scaleMode = ScaleMode.SHOW_ALL, modifyCanvasSize = false } = options;
+
+	_designWidth = designWidth;
+	_designHeight = designHeight;
+	_scaleMode = scaleMode;
+	_modifyCanvasSize = modifyCanvasSize;
+
+	_canvas = canvas;
+	if (options.renderStyle == "webgl") {
+		renderStyle = "webgl"
+		//参数有需要时开放
+		var option = {
+			// alpha: true,
+			antialias: false,
+			// premultipliedAlpha: true,
+			stencil: true,
+			// preserveDrawingBuffer: false,
+			// powerPreference: false,   //双显卡设备参数切换高性能，移动端暂时无用
+		}
+		context = canvas.getContext('webgl', option) ||
+			canvas.getContext('experimental-webgl', option);
+		if (!context) {
+			console.log("不支持webgl，回退canvas模式")
+			renderStyle = "canvas";
+			context = canvas.getContext('2d');
+		}
+	} else {
+		context = canvas.getContext('2d');
+	}
+
+	updateScaleModeSelf();
+}
+
+/**
+ * 获取渲染模式
+ */
+export function getRenderStyle() {
+	return renderStyle
+}
+
+/**
+ * 清空渲染上下文
+ */
+export function clear() {
+	context.setTransform(1, 0, 0, 1, 0, 0);
+	context.clearRect(0, 0, width, height);
+}
+
+/**
+ * 获取渲染上下文
+ */
+export function getContext() {
+	return context;
+}
+
+/**
+ * 获取舞台尺寸
+ */
+export function getStageSize() {
+	return {
+		width,
+		height,
+	}
+}
+
+/**
+ * 获取舞台缩放
+ */
+export function getStageScale() {
+	return {
+		x: scaleX,
+		y: scaleY,
+	}
+}
+
+/**
+ * 获取舞台中心
+ */
+export function getStageCenter() {
+	return {
+		x: width / 2,
+		y: height / 2,
+	}
+}
+
+/**
+ * 创建canvas
+ */
+export function createCanvas() {
+	return document.createElement('canvas');
+}
+
+interface ShortcutParams {
+	imgType: string;
+	zoomToDom?: boolean;
+	quality?: number;
+	bounds?: Bounds;
+}
+
+/**
+ * 截图
+ * @param type 目标格式 0:Image, 1:DataURL
+ * @param params
+ */
+export async function shortcut(type: number = 0, params: ShortcutParams) {
+	let targetImg;
+
+	if (params.bounds || params.zoomToDom) {
+		const dataUrl = _canvas.toDataURL('image/png');
+		const img = await dataUrlToImage(dataUrl);
+		targetImg = await shortcutWithSize(img, type, params.imgType, params.quality, params.bounds, params.zoomToDom ? scaleX : 1);
+	} else {
+		targetImg = _canvas.toDataURL(params.imgType, params.quality);
+	}
+
+	return targetImg;
+}
+
+function dataUrlToImage(dataUrl) {
+	return new Promise((resolve, reject) => {
+		const image = new Image();
+		image.onload = function () {
+			resolve(image);
+		};
+		image.onerror = function (e) {
+			reject(e);
+		};
+		image.src = dataUrl;
+	})
+}
+
+async function shortcutWithSize(img, type, imgType, quality?, bounds?: Bounds, scale = 1) {
+	if (!shortcutCanvas) {
+		shortcutCanvas = createCanvas();
+	}
+	const sx = bounds ? bounds.x || 0 : 0;
+	const sy = bounds ? bounds.y || 0 : 0;
+	const sw = bounds ? (bounds.width ? Math.min(bounds.width, width) : width) : width;
+	const sh = bounds ? (bounds.height ? Math.min(bounds.height, height) : height) : height;
+	const dw = sw * scale;
+	const dh = sh * scale;
+	shortcutCanvas.width = dw;
+	shortcutCanvas.height = dh;
+	const context = shortcutCanvas.getContext('2d');
+	context.drawImage(img, sx, sy, sw, sh, 0, 0, dw, dh);
+
+	const dataUrl = shortcutCanvas.toDataURL('image/' + imgType, quality);
+	switch (type) {
+		case 0:
+			return await dataUrlToImage(dataUrl);
+		case 1:
+			return dataUrl;
+	}
+}
+
+/**
+ * 更新缩放模式
+ */
+function updateScaleModeSelf() {
+	let parent = _canvas.parentElement;
+	let containerWidth = parent.clientWidth;
+	let containerHeight = parent.clientHeight;
+
+	const designWidth = _designWidth || containerWidth;
+	const designHeight = _designHeight || containerHeight;
+
+	scaleX = containerWidth / designWidth;
+	scaleY = containerHeight / designHeight;
+	switch (_scaleMode) {
+		case ScaleMode.SHOW_ALL:
+			width = designWidth;
+			height = designHeight;
+			break;
+		case ScaleMode.FIXED_WIDTH:
+			width = designWidth;
+			if (_modifyCanvasSize) {
+				height = designHeight;
+			} else {
+				height = containerHeight / scaleX;
+			}
+			scaleY = scaleX;
+			break;
+		case ScaleMode.FIXED_HEIGHT:
+			if (_modifyCanvasSize) {
+				width = designWidth;
+			} else {
+				width = containerWidth / scaleY;
+			}
+			height = designHeight;
+			scaleX = scaleY;
+			break;
+	}
+
+	updateScaleMode(scaleX, scaleY, rotation);
+
+	let styleWidth = _modifyCanvasSize ? designWidth * scaleX : containerWidth;
+	let styleHeight = _modifyCanvasSize ? designHeight * scaleY : containerHeight;
+
+	_canvas.width = width;
+	_canvas.height = height;
+	_canvas.style.display = 'block';
+	_canvas.style.width = styleWidth + 'px';
+	_canvas.style.height = styleHeight + 'px';
+}

src/core/index.ts

@@ -6,10 +6,14 @@ export {ScillaComponent} from "./ScillaComponent";
 export {Entity} from './Entity'
 export {Scene} from './Scene'
 export {ScillaEvent} from './ScillaEvent'
-export {getContext, createCanvas, getStageSize, getStageScale, getStageCenter, shortcut, ScaleMode} from './context/RenderContext';
+// export {getContext, createCanvas, getStageSize, getStageScale, getStageCenter, shortcut, ScaleMode} from './context/RenderContext';
+export { getContext, getRenderStyle, createCanvas, getStageSize, getStageScale, getStageCenter, shortcut } from './context/RenderContextGL';
 export {pagePosToCanvasPos, canvasPosToPagePos} from './context/InteractContext';
 export * from './manager'
 
 export {default as Texture, createTexture} from './Texture'
 export * from './Sheet'
-export * from './FrameAnimation'
+export * from './FrameAnimation'
\ No newline at end of file
+
+//导出webgl渲染器
+export {default as WebGLRenderer} from "./webgl/WebGLRenderer";
\ No newline at end of file

src/core/manager.ts

@@ -2,12 +2,13 @@
  * Created by rockyl on 2018/11/23.
  */
 
-import {Entity, traverse, traversePostorder} from "./Entity";
-import {injectProp} from "../tools/utils";
-import {setupContext as setupInteractContext} from "./context/InteractContext";
-import {clear, ScaleMode, setupContext as setupRenderContext} from "./context/RenderContext";
+import { Entity, traverse, traversePostorder } from "./Entity";
+import { injectProp } from "../tools/utils";
+import { setupContext as setupInteractContext } from "./context/InteractContext";
+// import {clear, ScaleMode, setupContext as setupRenderContext} from "./context/RenderContext";
+import { clear, getRenderStyle, ScaleMode, setupContext as setupRenderContext } from "./context/RenderContextGL";
 import './requestAnimationFrame';
-
+import WebglRenderer from "./webgl/WebGLRenderer";
 /**
  * 默认配置
  */
@@ -33,7 +34,7 @@ let lastFPS = 0;
 export function setup(_options?) {
 	injectProp(options, _options);
 
-	const {canvas, designWidth, designHeight, scaleMode, modifyCanvasSize, touchEnabled} = options;
+	const { canvas, designWidth, designHeight, scaleMode, modifyCanvasSize, touchEnabled,renderStyle } = options;
 
 	let canvasElement = typeof canvas == 'object' ? canvas : document.getElementById(canvas);
 
@@ -53,6 +54,7 @@ export function setup(_options?) {
 		designHeight,
 		scaleMode,
 		modifyCanvasSize,
+		renderStyle
 	});
 
 	root = new Entity('root');
@@ -103,7 +105,7 @@ export function getEntityPath(entity?: Entity): string {
  * 根据节点路径获取节点
  * @param path
  */
-export function getEntityByPath(path?: string): Entity{
+export function getEntityByPath(path?: string): Entity {
 	let target = root;
 
 	if (path.length > 0) {
@@ -166,12 +168,17 @@ function flush(tsNow): void {
 }
 
 const nextTicks = [];
-export function nextTick(func){
+export function nextTick(func) {
 	nextTicks.push(func);
 }
 
 function onFrameTick(tsNow) {
-	clear();
+	//循环前
+	if (getRenderStyle() == "webgl") {
+		WebglRenderer.ins.preRender();
+	} else {
+		clear();
+	}
 	const tsNow2 = Date.now();
 	lastFPS = Math.floor(1000 / (tsNow - tsLast));
 	tsLast = tsNow;
@@ -188,10 +195,14 @@ function onFrameTick(tsNow) {
 	});
 	//const tsPass = Date.now() - tsNow;
 
-	while(nextTicks.length > 0){
+	while (nextTicks.length > 0) {
 		let func = nextTicks.shift();
 		func();
 	}
+	//循环后
+	if (getRenderStyle() == "webgl") {
+		WebglRenderer.ins.postRender()
+	}
 }
 
 /**

src/core/webgl/ObjectRenderer.ts

+
+
+/**
+ * Base for a common object renderer that can be used as a system renderer plugin.
+ *
+ * @class
+ */
+export default class ObjectRenderer {
+    renderer
+    constructor(renderer) {
+        this.renderer = renderer
+    }
+    /**
+     * Starts the renderer and sets the shader
+     *
+     */
+    start() {
+        // set the shader..
+    }
+
+    /**
+     * Stops the renderer
+     *
+     */
+    stop() {
+        this.flush();
+    }
+
+    /**
+     * Stub method for rendering content and emptying the current batch.
+     *
+     */
+    flush() {
+        // flush!
+    }
+
+    /**
+     * Renders an object
+     *
+     * @param {DisplayObject} object - The object to render.
+     */
+    render(object) // eslint-disable-line no-unused-vars
+    {
+        // render the object
+    }
+}

src/core/webgl/WebGLState.ts

+import mapWebGLBlendModesTo from './utils/mapWebGLBlendModesTo';
+
+const BLEND = 0;
+const DEPTH_TEST = 1;
+const FRONT_FACE = 2;
+const CULL_FACE = 3;
+const BLEND_FUNC = 4;
+
+/**
+ * A WebGL state machines
+ *
+ * @class
+ */
+export default class WebGLState {
+    activeState: Uint8Array;
+    defaultState: Uint8Array;
+    stackIndex: number;
+    stack: any[];
+    gl: any;
+    maxAttribs: any;
+    attribState: { tempAttribState: any[]; attribState: any[]; };
+    blendModes: any[];
+    nativeVaoExtension: any;
+    /**
+     * @param {WebGLRenderingContext} gl - The current WebGL rendering context
+     */
+    constructor(gl) {
+        /**
+         * The current active state
+         *
+         * @member {Uint8Array}
+         */
+        this.activeState = new Uint8Array(16);
+
+        /**
+         * The default state
+         *
+         * @member {Uint8Array}
+         */
+        this.defaultState = new Uint8Array(16);
+
+        // default blend mode..
+        this.defaultState[0] = 1;
+
+        /**
+         * The current state index in the stack
+         *
+         * @member {number}
+         * @private
+         */
+        this.stackIndex = 0;
+
+        /**
+         * The stack holding all the different states
+         *
+         * @member {Array<*>}
+         * @private
+         */
+        this.stack = [];
+
+        /**
+         * The current WebGL rendering context
+         *
+         * @member {WebGLRenderingContext}
+         */
+        this.gl = gl;
+
+        this.maxAttribs = gl.getParameter(gl.MAX_VERTEX_ATTRIBS);
+
+        this.attribState = {
+            tempAttribState: new Array(this.maxAttribs),
+            attribState: new Array(this.maxAttribs),
+        };
+
+        this.blendModes = mapWebGLBlendModesTo(gl);
+
+        // check we have vao..
+        this.nativeVaoExtension = (
+            gl.getExtension('OES_vertex_array_object')
+            || gl.getExtension('MOZ_OES_vertex_array_object')
+            || gl.getExtension('WEBKIT_OES_vertex_array_object')
+        );
+    }
+
+    /**
+     * Pushes a new active state
+     */
+    push() {
+        // next state..
+        let state = this.stack[this.stackIndex];
+
+        if (!state) {
+            state = this.stack[this.stackIndex] = new Uint8Array(16);
+        }
+
+        ++this.stackIndex;
+
+        // copy state..
+        // set active state so we can force overrides of gl state
+        for (let i = 0; i < this.activeState.length; i++) {
+            state[i] = this.activeState[i];
+        }
+    }
+
+    /**
+     * Pops a state out
+     */
+    pop() {
+        const state = this.stack[--this.stackIndex];
+
+        this.setState(state);
+    }
+
+    /**
+     * Sets the current state
+     *
+     * @param {*} state - The state to set.
+     */
+    setState(state) {
+        this.setBlend(state[BLEND]);
+        this.setDepthTest(state[DEPTH_TEST]);
+        this.setFrontFace(state[FRONT_FACE]);
+        this.setCullFace(state[CULL_FACE]);
+        this.setBlendMode(state[BLEND_FUNC]);
+    }
+
+    /**
+     * Enables or disabled blending.
+     *
+     * @param {boolean} value - Turn on or off webgl blending.
+     */
+    setBlend(value) {
+        value = value ? 1 : 0;
+
+        if (this.activeState[BLEND] === value) {
+            return;
+        }
+
+        this.activeState[BLEND] = value;
+        this.gl[value ? 'enable' : 'disable'](this.gl.BLEND);
+    }
+
+    /**
+     * Sets the blend mode.
+     *
+     * @param {number} value - The blend mode to set to.
+     */
+    setBlendMode(value) {
+        if (value === this.activeState[BLEND_FUNC]) {
+            return;
+        }
+
+        this.activeState[BLEND_FUNC] = value;
+
+        const mode = this.blendModes[value];
+
+        if (mode.length === 2) {
+            this.gl.blendFunc(mode[0], mode[1]);
+        }
+        else {
+            this.gl.blendFuncSeparate(mode[0], mode[1], mode[2], mode[3]);
+        }
+    }
+
+    /**
+     * Sets whether to enable or disable depth test.
+     *
+     * @param {boolean} value - Turn on or off webgl depth testing.
+     */
+    setDepthTest(value) {
+        value = value ? 1 : 0;
+
+        if (this.activeState[DEPTH_TEST] === value) {
+            return;
+        }
+
+        this.activeState[DEPTH_TEST] = value;
+        this.gl[value ? 'enable' : 'disable'](this.gl.DEPTH_TEST);
+    }
+
+    /**
+     * Sets whether to enable or disable cull face.
+     *
+     * @param {boolean} value - Turn on or off webgl cull face.
+     */
+    setCullFace(value) {
+        value = value ? 1 : 0;
+
+        if (this.activeState[CULL_FACE] === value) {
+            return;
+        }
+
+        this.activeState[CULL_FACE] = value;
+        this.gl[value ? 'enable' : 'disable'](this.gl.CULL_FACE);
+    }
+
+    /**
+     * Sets the gl front face.
+     *
+     * @param {boolean} value - true is clockwise and false is counter-clockwise
+     */
+    setFrontFace(value) {
+        value = value ? 1 : 0;
+
+        if (this.activeState[FRONT_FACE] === value) {
+            return;
+        }
+
+        this.activeState[FRONT_FACE] = value;
+        this.gl.frontFace(this.gl[value ? 'CW' : 'CCW']);
+    }
+
+    /**
+     * Disables all the vaos in use
+     *
+     */
+    resetAttributes() {
+        for (let i = 0; i < this.attribState.tempAttribState.length; i++) {
+            this.attribState.tempAttribState[i] = 0;
+        }
+
+        for (let i = 0; i < this.attribState.attribState.length; i++) {
+            this.attribState.attribState[i] = 0;
+        }
+
+        // im going to assume one is always active for performance reasons.
+        for (let i = 1; i < this.maxAttribs; i++) {
+            this.gl.disableVertexAttribArray(i);
+        }
+    }
+
+    // used
+    /**
+     * Resets all the logic and disables the vaos
+     */
+    resetToDefault() {
+        // unbind any VAO if they exist..
+        if (this.nativeVaoExtension) {
+            this.nativeVaoExtension.bindVertexArrayOES(null);
+        }
+
+        // reset all attributes..
+        this.resetAttributes();
+
+        // set active state so we can force overrides of gl state
+        for (let i = 0; i < this.activeState.length; ++i) {
+            this.activeState[i] = 32;
+        }
+
+        this.gl.pixelStorei(this.gl.UNPACK_FLIP_Y_WEBGL, false);
+
+        this.setState(this.defaultState);
+    }
+}

src/core/webgl/const.ts

+/**
+ * Two Pi.
+ *
+ * @static
+ * @constant
+ * @memberof PIXI
+ * @type {number}
+ */
+export const PI_2 = Math.PI * 2;
+
+/**
+ * Conversion factor for converting radians to degrees.
+ *
+ * @static
+ * @constant
+ * @memberof PIXI
+ * @type {number}
+ */
+export const RAD_TO_DEG = 180 / Math.PI;
+
+/**
+ * Conversion factor for converting degrees to radians.
+ *
+ * @static
+ * @constant
+ * @memberof PIXI
+ * @type {number}
+ */
+export const DEG_TO_RAD = Math.PI / 180;
+
+/**
+ * Constant to identify the Renderer Type.
+ *
+ * @static
+ * @constant
+ * @memberof PIXI
+ * @name RENDERER_TYPE
+ * @type {object}
+ * @property {number} UNKNOWN - Unknown render type.
+ * @property {number} WEBGL - WebGL render type.
+ * @property {number} CANVAS - Canvas render type.
+ */
+export const RENDERER_TYPE = {
+    UNKNOWN:    0,
+    WEBGL:      1,
+    CANVAS:     2,
+};
+
+/**
+ * Various blend modes supported by 
+ *
+ * IMPORTANT - The WebGL renderer only supports the NORMAL, ADD, MULTIPLY and SCREEN blend modes.
+ * Anything else will silently act like NORMAL.
+ *
+ * @static
+ * @constant
+ * @memberof PIXI
+ * @name BLEND_MODES
+ * @type {object}
+ * @property {number} NORMAL
+ * @property {number} ADD
+ * @property {number} MULTIPLY
+ * @property {number} SCREEN
+ * @property {number} OVERLAY
+ * @property {number} DARKEN
+ * @property {number} LIGHTEN
+ * @property {number} COLOR_DODGE
+ * @property {number} COLOR_BURN
+ * @property {number} HARD_LIGHT
+ * @property {number} SOFT_LIGHT
+ * @property {number} DIFFERENCE
+ * @property {number} EXCLUSION
+ * @property {number} HUE
+ * @property {number} SATURATION
+ * @property {number} COLOR
+ * @property {number} LUMINOSITY
+ */
+export const BLEND_MODES = {
+    NORMAL:         0,
+    ADD:            1,
+    MULTIPLY:       2,
+    SCREEN:         3,
+    OVERLAY:        4,
+    DARKEN:         5,
+    LIGHTEN:        6,
+    COLOR_DODGE:    7,
+    COLOR_BURN:     8,
+    HARD_LIGHT:     9,
+    SOFT_LIGHT:     10,
+    DIFFERENCE:     11,
+    EXCLUSION:      12,
+    HUE:            13,
+    SATURATION:     14,
+    COLOR:          15,
+    LUMINOSITY:     16,
+    NORMAL_NPM:     17,
+    ADD_NPM:        18,
+    SCREEN_NPM:     19,
+};
+
+/**
+ * Various webgl draw modes. These can be used to specify which GL drawMode to use
+ * under certain situations and renderers.
+ *
+ * @static
+ * @constant
+ * @memberof PIXI
+ * @name DRAW_MODES
+ * @type {object}
+ * @property {number} POINTS
+ * @property {number} LINES
+ * @property {number} LINE_LOOP
+ * @property {number} LINE_STRIP
+ * @property {number} TRIANGLES
+ * @property {number} TRIANGLE_STRIP
+ * @property {number} TRIANGLE_FAN
+ */
+export const DRAW_MODES = {
+    POINTS:         0,
+    LINES:          1,
+    LINE_LOOP:      2,
+    LINE_STRIP:     3,
+    TRIANGLES:      4,
+    TRIANGLE_STRIP: 5,
+    TRIANGLE_FAN:   6,
+};
+
+/**
+ * The scale modes that are supported by 
+ *
+ * The {@link settings.SCALE_MODE} scale mode affects the default scaling mode of future operations.
+ * It can be re-assigned to either LINEAR or NEAREST, depending upon suitability.
+ *
+ * @static
+ * @constant
+ * @memberof PIXI
+ * @name SCALE_MODES
+ * @type {object}
+ * @property {number} LINEAR Smooth scaling
+ * @property {number} NEAREST Pixelating scaling
+ */
+export const SCALE_MODES = {
+    LINEAR:     0,
+    NEAREST:    1,
+};
+
+/**
+ * The wrap modes that are supported by 
+ *
+ * The {@link settings.WRAP_MODE} wrap mode affects the default wrapping mode of future operations.
+ * It can be re-assigned to either CLAMP or REPEAT, depending upon suitability.
+ * If the texture is non power of two then clamp will be used regardless as webGL can
+ * only use REPEAT if the texture is po2.
+ *
+ * This property only affects WebGL.
+ *
+ * @static
+ * @constant
+ * @name WRAP_MODES
+ * @memberof PIXI
+ * @type {object}
+ * @property {number} CLAMP - The textures uvs are clamped
+ * @property {number} REPEAT - The texture uvs tile and repeat
+ * @property {number} MIRRORED_REPEAT - The texture uvs tile and repeat with mirroring
+ */
+export const WRAP_MODES = {
+    CLAMP:          0,
+    REPEAT:         1,
+    MIRRORED_REPEAT: 2,
+};
+
+/**
+ * The gc modes that are supported by 
+ *
+ * The {@link settings.GC_MODE} Garbage Collection mode for PixiJS textures is AUTO
+ * If set to GC_MODE, the renderer will occasionally check textures usage. If they are not
+ * used for a specified period of time they will be removed from the GPU. They will of course
+ * be uploaded again when they are required. This is a silent behind the scenes process that
+ * should ensure that the GPU does not  get filled up.
+ *
+ * Handy for mobile devices!
+ * This property only affects WebGL.
+ *
+ * @static
+ * @constant
+ * @name GC_MODES
+ * @memberof PIXI
+ * @type {object}
+ * @property {number} AUTO - Garbage collection will happen periodically automatically
+ * @property {number} MANUAL - Garbage collection will need to be called manually
+ */
+export const GC_MODES = {
+    AUTO:           0,
+    MANUAL:         1,
+};
+
+/**
+ * Regexp for image type by extension.
+ *
+ * @static
+ * @constant
+ * @memberof PIXI
+ * @type {RegExp|string}
+ * @example `image.png`
+ */
+export const URL_FILE_EXTENSION = /\.(\w{3,4})(?:$|\?|#)/i;
+
+/**
+ * Regexp for data URI.
+ * Based on: {@link https://github.com/ragingwind/data-uri-regex}
+ *
+ * @static
+ * @constant
+ * @name DATA_URI
+ * @memberof PIXI
+ * @type {RegExp|string}
+ * @example data:image/png;base64
+ */
+export const DATA_URI = /^\s*data:(?:([\w-]+)\/([\w+.-]+))?(?:;charset=([\w-]+))?(?:;(base64))?,(.*)/i;
+
+/**
+ * Regexp for SVG size.
+ *
+ * @static
+ * @constant
+ * @name SVG_SIZE
+ * @memberof PIXI
+ * @type {RegExp|string}
+ * @example <svg width="100" height="100"></svg>
+ */
+export const SVG_SIZE = /<svg[^>]*(?:\s(width|height)=('|")(\d*(?:\.\d+)?)(?:px)?('|"))[^>]*(?:\s(width|height)=('|")(\d*(?:\.\d+)?)(?:px)?('|"))[^>]*>/i; // eslint-disable-line max-len
+
+/**
+ * Constants that identify shapes, mainly to prevent `instanceof` calls.
+ *
+ * @static
+ * @constant
+ * @name SHAPES
+ * @memberof PIXI
+ * @type {object}
+ * @property {number} POLY Polygon
+ * @property {number} RECT Rectangle
+ * @property {number} CIRC Circle
+ * @property {number} ELIP Ellipse
+ * @property {number} RREC Rounded Rectangle
+ */
+export const SHAPES = {
+    POLY: 0,
+    RECT: 1,
+    CIRC: 2,
+    ELIP: 3,
+    RREC: 4,
+};
+
+/**
+ * Constants that specify float precision in shaders.
+ *
+ * @static
+ * @constant
+ * @name PRECISION
+ * @memberof PIXI
+ * @type {object}
+ * @property {string} LOW='lowp'
+ * @property {string} MEDIUM='mediump'
+ * @property {string} HIGH='highp'
+ */
+export const PRECISION = {
+    LOW: 'lowp',
+    MEDIUM: 'mediump',
+    HIGH: 'highp',
+};
+
+/**
+ * Constants that specify the transform type.
+ *
+ * @static
+ * @constant
+ * @name TRANSFORM_MODE
+ * @memberof PIXI
+ * @type {object}
+ * @property {number} STATIC
+ * @property {number} DYNAMIC
+ */
+export const TRANSFORM_MODE = {
+    STATIC:     0,
+    DYNAMIC:    1,
+};
+
+/**
+ * Constants that define the type of gradient on text.
+ *
+ * @static
+ * @constant
+ * @name TEXT_GRADIENT
+ * @memberof PIXI
+ * @type {object}
+ * @property {number} LINEAR_VERTICAL Vertical gradient
+ * @property {number} LINEAR_HORIZONTAL Linear gradient
+ */
+export const TEXT_GRADIENT = {
+    LINEAR_VERTICAL: 0,
+    LINEAR_HORIZONTAL: 1,
+};
+
+/**
+ * Represents the update priorities used by internal PIXI classes when registered with
+ * the {@link ticker.Ticker} object. Higher priority items are updated first and lower
+ * priority items, such as render, should go later.
+ *
+ * @static
+ * @constant
+ * @name UPDATE_PRIORITY
+ * @memberof PIXI
+ * @type {object}
+ * @property {number} INTERACTION=50 Highest priority, used for {@link interaction.InteractionManager}
+ * @property {number} HIGH=25 High priority updating, {@link VideoBaseTexture} and {@link extras.AnimatedSprite}
+ * @property {number} NORMAL=0 Default priority for ticker events, see {@link ticker.Ticker#add}.
+ * @property {number} LOW=-25 Low priority used for {@link Application} rendering.
+ * @property {number} UTILITY=-50 Lowest priority used for {@link prepare.BasePrepare} utility.
+ */
+export const UPDATE_PRIORITY = {
+    INTERACTION: 50,
+    HIGH: 25,
+    NORMAL: 0,
+    LOW: -25,
+    UTILITY: -50,
+};

src/core/webgl/glCore/BatchBuffer.ts

+
+export class BatchBuffer {
+    vertices: ArrayBuffer;
+    float32View: Float32Array;
+    uint32View: Uint32Array;
+    positions: any;
+    uvs: any;
+    colors: any;
+    /**
+     * @param {number} size - The size of the buffer in bytes.
+     */
+    constructor(size) {
+        this.vertices = new ArrayBuffer(size);
+
+        /**
+         * View on the vertices as a Float32Array for positions
+         *
+         * @member {Float32Array}
+         */
+        this.float32View = new Float32Array(this.vertices);
+
+        /**
+         * View on the vertices as a Uint32Array for uvs
+         *
+         * @member {Float32Array}
+         */
+        this.uint32View = new Uint32Array(this.vertices);
+    }
+
+    /**
+     * Destroys the buffer.
+     *
+     */
+    public destroy() {
+        this.vertices = null;
+        this.positions = null;
+        this.uvs = null;
+        this.colors = null;
+    }
+}

src/core/webgl/glCore/GLBuffer.ts

+var EMPTY_ARRAY_BUFFER = new ArrayBuffer(0);
+
+/**
+ * Helper class to create a webGL buffer
+ *
+ * @class
+ * @memberof glCore
+ * @param gl {WebGLRenderingContext} The current WebGL rendering context
+ * @param type {gl.ARRAY_BUFFER | gl.ELEMENT_ARRAY_BUFFER} @mat
+ * @param data {ArrayBuffer| SharedArrayBuffer|ArrayBufferView} an array of data
+ * @param drawType {gl.STATIC_DRAW|gl.DYNAMIC_DRAW|gl.STREAM_DRAW}
+ */
+export class GLBuffer {
+	gl: any;
+	buffer: any;
+	type: any;
+	drawType: any;
+	data: ArrayBuffer;
+	_updateID: number;
+	constructor(gl, type?, data?, drawType?) {
+
+		/**
+		 * The current WebGL rendering context
+		 *
+		 * @member {WebGLRenderingContext}
+		 */
+		this.gl = gl;
+
+		/**
+		 * The WebGL buffer, created upon instantiation
+		 *
+		 * @member {WebGLBuffer}
+		 */
+		this.buffer = gl.createBuffer();
+
+		/**
+		 * The type of the buffer
+		 *
+		 * @member {gl.ARRAY_BUFFER|gl.ELEMENT_ARRAY_BUFFER}
+		 */
+		this.type = type || gl.ARRAY_BUFFER;
+
+		/**
+		 * The draw type of the buffer
+		 *
+		 * @member {gl.STATIC_DRAW|gl.DYNAMIC_DRAW|gl.STREAM_DRAW}
+		 */
+		this.drawType = drawType || gl.STATIC_DRAW;
+
+		/**
+		 * The data in the buffer, as a typed array
+		 *
+		 * @member {ArrayBuffer| SharedArrayBuffer|ArrayBufferView}
+		 */
+		this.data = EMPTY_ARRAY_BUFFER;
+
+		if (data) {
+			this.upload(data);
+		}
+
+		this._updateID = 0;
+	};
+
+	/**
+	 * Uploads the buffer to the GPU
+	 * @param data {ArrayBuffer| SharedArrayBuffer|ArrayBufferView} an array of data to upload
+	 * @param offset {Number} if only a subset of the data should be uploaded, this is the amount of data to subtract
+	 * @param dontBind {Boolean} whether to bind the buffer before uploading it
+	 */
+	public upload(data, offset?, dontBind?) {
+		// todo - needed?
+		if (!dontBind) this.bind();
+
+		var gl = this.gl;
+
+		data = data || this.data;
+		offset = offset || 0;
+
+		if (this.data.byteLength >= data.byteLength) {
+			gl.bufferSubData(this.type, offset, data);
+		}
+		else {
+			gl.bufferData(this.type, data, this.drawType);
+		}
+
+		this.data = data;
+	};
+	/**
+	 * Binds the buffer
+	 *
+	 */
+	public bind() {
+		var gl = this.gl;
+		gl.bindBuffer(this.type, this.buffer);
+	};
+	/**
+	 * Destroys the buffer
+	 *
+	 */
+	public destroy = function () {
+		this.gl.deleteBuffer(this.buffer);
+	};
+	public static createVertexBuffer(gl, data?, drawType?) {
+		return new GLBuffer(gl, gl.ARRAY_BUFFER, data, drawType);
+	};
+
+	public static createIndexBuffer(gl, data?, drawType?) {
+		return new GLBuffer(gl, gl.ELEMENT_ARRAY_BUFFER, data, drawType);
+	};
+
+	public static create(gl, type, data, drawType) {
+		return new GLBuffer(gl, type, data, drawType);
+	};
+
+
+}
+
+

src/core/webgl/glCore/GLFramebuffer.ts

+
+import { GLTexture } from './GLTexture';
+
+/**
+ * Helper class to create a webGL Framebuffer
+ *
+ * @class
+ * @memberof glCore
+ * @param gl {WebGLRenderingContext} The current WebGL rendering context
+ * @param width {Number} the width of the drawing area of the frame buffer
+ * @param height {Number} the height of the drawing area of the frame buffer
+ */
+export class GLFramebuffer {
+    gl: any;
+    framebuffer: any;
+    stencil: any;
+    texture: any;
+    width: any;
+    height: any;
+    constructor(gl, width, height) {
+        /**
+         * The current WebGL rendering context
+         *
+         * @member {WebGLRenderingContext}
+         */
+        this.gl = gl;
+
+        /**
+         * The frame buffer
+         *
+         * @member {WebGLFramebuffer}
+         */
+        this.framebuffer = gl.createFramebuffer();
+
+        /**
+         * The stencil buffer
+         *
+         * @member {WebGLRenderbuffer}
+         */
+        this.stencil = null;
+
+        /**
+         * The stencil buffer
+         *
+         * @member {glCore.GLTexture}
+         */
+        this.texture = null;
+
+        /**
+         * The width of the drawing area of the buffer
+         *
+         * @member {Number}
+         */
+        this.width = width || 100;
+        /**
+         * The height of the drawing area of the buffer
+         *
+         * @member {Number}
+         */
+        this.height = height || 100;
+    };
+    /**
+     * Adds a texture to the frame buffer
+     * @param texture {glCore.GLTexture}
+     */
+    public enableTexture(texture) {
+        var gl = this.gl;
+
+        this.texture = texture || new GLTexture(gl);
+
+        this.texture.bind();
+
+        //gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA,  this.width, this.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+
+        this.bind();
+
+        gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, this.texture.texture, 0);
+    };
+
+    /**
+     * Initialises the stencil buffer
+     */
+    public enableStencil() {
+        if (this.stencil) return;
+
+        var gl = this.gl;
+
+        this.stencil = gl.createRenderbuffer();
+
+        gl.bindRenderbuffer(gl.RENDERBUFFER, this.stencil);
+
+        // TODO.. this is depth AND stencil?
+        gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_STENCIL_ATTACHMENT, gl.RENDERBUFFER, this.stencil);
+        gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_STENCIL, this.width, this.height);
+
+
+    };
+
+    /**
+     * Erases the drawing area and fills it with a colour
+     * @param  r {Number} the red value of the clearing colour
+     * @param  g {Number} the green value of the clearing colour
+     * @param  b {Number} the blue value of the clearing colour
+     * @param  a {Number} the alpha value of the clearing colour
+     */
+    public clear(r, g, b, a) {
+        this.bind();
+
+        var gl = this.gl;
+
+        gl.clearColor(r, g, b, a);
+        gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+    };
+
+    /**
+     * Binds the frame buffer to the WebGL context
+     */
+    public bind() {
+        var gl = this.gl;
+        gl.bindFramebuffer(gl.FRAMEBUFFER, this.framebuffer);
+    };
+
+    /**
+     * Unbinds the frame buffer to the WebGL context
+     */
+    public unbind() {
+        var gl = this.gl;
+        gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+    };
+    /**
+     * Resizes the drawing area of the buffer to the given width and height
+     * @param  width  {Number} the new width
+     * @param  height {Number} the new height
+     */
+    public resize(width, height) {
+        var gl = this.gl;
+
+        this.width = width;
+        this.height = height;
+
+        if (this.texture) {
+            this.texture.uploadData(null, width, height);
+        }
+
+        if (this.stencil) {
+            // update the stencil buffer width and height
+            gl.bindRenderbuffer(gl.RENDERBUFFER, this.stencil);
+            gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_STENCIL, width, height);
+        }
+    };
+
+    /**
+     * Destroys this buffer
+     */
+    public destroy() {
+        var gl = this.gl;
+
+        //TODO
+        if (this.texture) {
+            this.texture.destroy();
+        }
+
+        gl.deleteFramebuffer(this.framebuffer);
+
+        this.gl = null;
+
+        this.stencil = null;
+        this.texture = null;
+    };
+
+    /**
+     * Creates a frame buffer with a texture containing the given data
+     * @static
+     * @param gl {WebGLRenderingContext} The current WebGL rendering context
+     * @param width {Number} the width of the drawing area of the frame buffer
+     * @param height {Number} the height of the drawing area of the frame buffer
+     * @param data {ArrayBuffer| SharedArrayBuffer|ArrayBufferView} an array of data
+     */
+    public static createRGBA(gl, width, height, data?) {
+        var texture = GLTexture.fromData(gl, null, width, height);
+        texture.enableNearestScaling();
+        texture.enableWrapClamp();
+
+        //now create the framebuffer object and attach the texture to it.
+        var fbo = new GLFramebuffer(gl, width, height);
+        fbo.enableTexture(texture);
+        //fbo.enableStencil(); // get this back on soon!
+
+        //fbo.enableStencil(); // get this back on soon!
+
+        fbo.unbind();
+
+        return fbo;
+    };
+
+    /**
+     * Creates a frame buffer with a texture containing the given data
+     * @static
+     * @param gl {WebGLRenderingContext} The current WebGL rendering context
+     * @param width {Number} the width of the drawing area of the frame buffer
+     * @param height {Number} the height of the drawing area of the frame buffer
+     * @param data {ArrayBuffer| SharedArrayBuffer|ArrayBufferView} an array of data
+     */
+    public static createFloat32(gl, width, height, data) {
+        // create a new texture..
+        var texture = GLTexture.fromData(gl, data, width, height);
+        texture.enableNearestScaling();
+        texture.enableWrapClamp();
+
+        //now create the framebuffer object and attach the texture to it.
+        var fbo = new GLFramebuffer(gl, width, height);
+        fbo.enableTexture(texture);
+
+        fbo.unbind();
+
+        return fbo;
+    };
+
+
+}
+
+
+
+

src/core/webgl/glCore/GLShader.ts

+
+import { compileProgram } from './shader/compileProgram';
+import { extractAttributes } from './shader/extractAttributes';
+import { extractUniforms } from './shader/extractUniforms';
+import { setPrecision } from './shader/setPrecision';
+import { generateUniformAccessObject } from './shader/generateUniformAccessObject';
+
+/**
+ * Helper class to create a webGL Shader
+ *
+ * @class
+ * @memberof glCore
+ * @param gl {WebGLRenderingContext}
+ * @param vertexSrc {string|string[]} The vertex shader source as an array of strings.
+ * @param fragmentSrc {string|string[]} The fragment shader source as an array of strings.
+ * @param precision {string} The float precision of the shader. Options are 'lowp', 'mediump' or 'highp'.
+ * @param attributeLocations {object} A key value pair showing which location eact attribute should sit eg {position:0, uvs:1}
+ */
+export class GLShader {
+	gl: any;
+	program: any;
+	attributes: {};
+	uniformData: {};
+	uniforms: { data: {}; };
+	constructor(gl, vertexSrc, fragmentSrc, precision?, attributeLocations?) {
+		/**
+		 * The current WebGL rendering context
+		 *
+		 * @member {WebGLRenderingContext}
+		 */
+		this.gl = gl;
+
+		if (precision) {
+			vertexSrc = setPrecision(vertexSrc, precision);
+			fragmentSrc = setPrecision(fragmentSrc, precision);
+		}
+
+		/**
+		 * The shader program
+		 *
+		 * @member {WebGLProgram}
+		 */
+		// First compile the program..
+		this.program = compileProgram(gl, vertexSrc, fragmentSrc, attributeLocations);
+
+		/**
+		 * The attributes of the shader as an object containing the following properties
+		 * {
+		 * 	type,
+		 * 	size,
+		 * 	location,
+		 * 	pointer
+		 * }
+		 * @member {Object}
+		 */
+		// next extract the attributes
+		this.attributes = extractAttributes(gl, this.program);
+
+		this.uniformData = extractUniforms(gl, this.program);
+
+		/**
+		 * The uniforms of the shader as an object containing the following properties
+		 * {
+		 * 	gl,
+		 * 	data
+		 * }
+		 * @member {Object}
+		 */
+		this.uniforms = generateUniformAccessObject(gl, this.uniformData);
+
+	};
+
+	/**
+	 * Uses this shader
+	 * 
+	 * @return {glCore.GLShader} Returns itself.
+	 */
+	public bind() {
+		this.gl.useProgram(this.program);
+		return this;
+	};
+
+	/**
+	 * Destroys this shader
+	 * TODO
+	 */
+	public destroy() {
+		this.attributes = null;
+		this.uniformData = null;
+		this.uniforms = null;
+
+		var gl = this.gl;
+		gl.deleteProgram(this.program);
+	};
+
+
+}
+
+
+

src/core/webgl/glCore/GLTexture.ts

+
+/**
+ * Helper class to create a WebGL Texture
+ *
+ * @class
+ * @memberof glCore
+ * @param gl {WebGLRenderingContext} The current WebGL context
+ * @param width {number} the width of the texture
+ * @param height {number} the height of the texture
+ * @param format {number} the pixel format of the texture. defaults to gl.RGBA
+ * @param type {number} the gl type of the texture. defaults to gl.UNSIGNED_BYTE
+ */
+export class GLTexture {
+	gl: any;
+	texture: any;
+	mipmap: boolean;
+	premultiplyAlpha: boolean;
+	width: any;
+	height: any;
+	format: any;
+	type: any;
+	constructor(gl, width?, height?, format?, type?) {
+		/**
+		 * The current WebGL rendering context
+		 *
+		 * @member {WebGLRenderingContext}
+		 */
+		this.gl = gl;
+
+
+		/**
+		 * The WebGL texture
+		 *
+		 * @member {WebGLTexture}
+		 */
+		this.texture = gl.createTexture();
+
+		/**
+		 * If mipmapping was used for this texture, enable and disable with enableMipmap()
+		 *
+		 * @member {Boolean}
+		 */
+		// some settings..
+		this.mipmap = false;
+
+
+		/**
+		 * Set to true to enable pre-multiplied alpha
+		 *
+		 * @member {Boolean}
+		 */
+		this.premultiplyAlpha = false;
+
+		/**
+		 * The width of texture
+		 *
+		 * @member {Number}
+		 */
+		this.width = width || -1;
+		/**
+		 * The height of texture
+		 *
+		 * @member {Number}
+		 */
+		this.height = height || -1;
+
+		/**
+		 * The pixel format of the texture. defaults to gl.RGBA
+		 *
+		 * @member {Number}
+		 */
+		this.format = format || gl.RGBA;
+
+		/**
+		 * The gl type of the texture. defaults to gl.UNSIGNED_BYTE
+		 *
+		 * @member {Number}
+		 */
+		this.type = type || gl.UNSIGNED_BYTE;
+
+
+
+	};
+
+
+	/**
+	 * Uploads this texture to the GPU
+	 * @param source {HTMLImageElement|ImageData|HTMLVideoElement} the source image of the texture
+	 */
+	public upload(source) {
+		this.bind();
+
+		var gl = this.gl;
+
+		//设置是否对纹理进行预乘透明通道
+		gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, this.premultiplyAlpha);
+
+		var newWidth = source.videoWidth || source.width;
+		var newHeight = source.videoHeight || source.height;
+
+		if (newHeight !== this.height || newWidth !== this.width) {
+			gl.texImage2D(gl.TEXTURE_2D, 0, this.format, this.format, this.type, source);
+		}
+		else {
+			gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.format, this.type, source);
+		}
+
+		// if the source is a video, we need to use the videoWidth / videoHeight properties as width / height will be incorrect.
+		this.width = newWidth;
+		this.height = newHeight;
+
+	};
+
+	/**
+	 * Use a data source and uploads this texture to the GPU
+	 * @param data {TypedArray} the data to upload to the texture
+	 * @param width {number} the new width of the texture
+	 * @param height {number} the new height of the texture
+	 */
+	public uploadData = function (data, width, height) {
+		this.bind();
+
+		var gl = this.gl;
+
+
+		if (data instanceof Float32Array) {
+			if (!FLOATING_POINT_AVAILABLE) {
+				var ext = gl.getExtension("OES_texture_float");
+
+				if (ext) {
+					FLOATING_POINT_AVAILABLE = true;
+				}
+				else {
+					throw new Error('floating point textures not available');
+				}
+			}
+
+			this.type = gl.FLOAT;
+		}
+		else {
+			// TODO support for other types
+			this.type = this.type || gl.UNSIGNED_BYTE;
+		}
+
+		// what type of data?
+		gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, this.premultiplyAlpha);
+
+
+		if (width !== this.width || height !== this.height) {
+			gl.texImage2D(gl.TEXTURE_2D, 0, this.format, width, height, 0, this.format, this.type, data || null);
+		}
+		else {
+			gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, width, height, this.format, this.type, data || null);
+		}
+
+		this.width = width;
+		this.height = height;
+
+
+		//	texSubImage2D
+	};
+
+	/**
+	 * Binds the texture
+	 * @param  location
+	 */
+	public bind(location?) {
+		var gl = this.gl;
+
+		if (location !== undefined) {
+			gl.activeTexture(gl.TEXTURE0 + location);
+		}
+
+		gl.bindTexture(gl.TEXTURE_2D, this.texture);
+	};
+
+	/**
+	 * Unbinds the texture
+	 */
+	public unbind() {
+		var gl = this.gl;
+		gl.bindTexture(gl.TEXTURE_2D, null);
+	};
+
+	/**
+	 * @param linear {Boolean} if we want to use linear filtering or nearest neighbour interpolation
+	 */
+	public minFilter(linear) {
+		var gl = this.gl;
+
+		this.bind();
+
+		if (this.mipmap) {
+			gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, linear ? gl.LINEAR_MIPMAP_LINEAR : gl.NEAREST_MIPMAP_NEAREST);
+		}
+		else {
+			gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, linear ? gl.LINEAR : gl.NEAREST);
+		}
+	};
+
+	/**
+	 * @param linear {Boolean} if we want to use linear filtering or nearest neighbour interpolation
+	 */
+	public magFilter(linear) {
+		var gl = this.gl;
+
+		this.bind();
+
+		gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, linear ? gl.LINEAR : gl.NEAREST);
+	};
+
+	/**
+	 * Enables mipmapping
+	 */
+	public enableMipmap() {
+		var gl = this.gl;
+
+		this.bind();
+
+		this.mipmap = true;
+
+		gl.generateMipmap(gl.TEXTURE_2D);
+	};
+
+	/**
+	 * Enables linear filtering
+	 */
+	public enableLinearScaling() {
+		this.minFilter(true);
+		this.magFilter(true);
+	};
+
+	/**
+	 * Enables nearest neighbour interpolation
+	 */
+	public enableNearestScaling() {
+		this.minFilter(false);
+		this.magFilter(false);
+	};
+
+	/**
+	 * Enables clamping on the texture so WebGL will not repeat it
+	 */
+	public enableWrapClamp() {
+		var gl = this.gl;
+
+		this.bind();
+
+		gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+		gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+	};
+
+	/**
+	 * Enable tiling on the texture
+	 */
+	public enableWrapRepeat() {
+		var gl = this.gl;
+
+		this.bind();
+
+		gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
+		gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
+	};
+	public enableWrapMirrorRepeat() {
+		var gl = this.gl;
+
+		this.bind();
+
+		gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.MIRRORED_REPEAT);
+		gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.MIRRORED_REPEAT);
+	};
+
+
+	/**
+	 * Destroys this texture
+	 */
+	public destroy() {
+		var gl = this.gl;
+		//TODO
+		gl.deleteTexture(this.texture);
+	};
+
+	/**
+ * @static
+ * @param gl {WebGLRenderingContext} The current WebGL context
+ * @param source {HTMLImageElement|ImageData} the source image of the texture
+ * @param premultiplyAlpha {Boolean} If we want to use pre-multiplied alpha
+ */
+	public static fromSource(gl, source, premultiplyAlpha?) {
+		var texture = new GLTexture(gl);
+		texture.premultiplyAlpha = premultiplyAlpha || false;
+		texture.upload(source);
+
+		return texture;
+	};
+
+	/**
+	 * @static
+	 * @param gl {WebGLRenderingContext} The current WebGL context
+	 * @param data {TypedArray} the data to upload to the texture
+	 * @param width {number} the new width of the texture
+	 * @param height {number} the new height of the texture
+	 */
+	public static fromData(gl, data, width, height) {
+		//console.log(data, width, height);
+		var texture = new GLTexture(gl);
+		texture.uploadData(data, width, height);
+
+		return texture;
+	};
+
+}
+
+
+
+var FLOATING_POINT_AVAILABLE = false;
+
+
+
+
+
+
+

src/core/webgl/glCore/TextureUvs.ts

+// import GroupD8 from '../math/GroupD8';
+
+/**
+ * A standard object to store the Uvs of a texture
+ *
+ * @class
+ * @private
+ */
+export  class TextureUvs
+{
+    x0: number;
+    y0: number;
+    x1: number;
+    y1: number;
+    x2: number;
+    y2: number;
+    x3: number;
+    y3: number;
+    uvsUint32: Uint32Array;
+    /**
+     *
+     */
+    constructor()
+    {
+        this.x0 = 0;
+        this.y0 = 0;
+
+        this.x1 = 1;
+        this.y1 = 0;
+
+        this.x2 = 1;
+        this.y2 = 1;
+
+        this.x3 = 0;
+        this.y3 = 1;
+
+        this.uvsUint32 = new Uint32Array(4);
+        this.uvsUint32[0] = (((this.y0 * 65535) & 0xFFFF) << 16) | ((this.x0 * 65535) & 0xFFFF);
+        this.uvsUint32[1] = (((this.y1 * 65535) & 0xFFFF) << 16) | ((this.x1 * 65535) & 0xFFFF);
+        this.uvsUint32[2] = (((this.y2 * 65535) & 0xFFFF) << 16) | ((this.x2 * 65535) & 0xFFFF);
+        this.uvsUint32[3] = (((this.y3 * 65535) & 0xFFFF) << 16) | ((this.x3 * 65535) & 0xFFFF);
+    }
+
+    /**
+     * Sets the texture Uvs based on the given frame information.
+     *
+     * @private
+     * @param {Rectangle} frame - The frame of the texture
+     * @param {Rectangle} baseFrame - The base frame of the texture
+     * @param {number} rotate - Rotation of frame, see {@link GroupD8}
+     */
+    set(frame, baseFrame, rotate?)
+    {
+        const tw = baseFrame.width;
+        const th = baseFrame.height;
+
+        // if (rotate)
+        // {
+        //     // width and height div 2 div baseFrame size
+        //     const w2 = frame.width / 2 / tw;
+        //     const h2 = frame.height / 2 / th;
+
+        //     // coordinates of center
+        //     const cX = (frame.x / tw) + w2;
+        //     const cY = (frame.y / th) + h2;
+
+        //     rotate = GroupD8.add(rotate, GroupD8.NW); // NW is top-left corner
+        //     this.x0 = cX + (w2 * GroupD8.uX(rotate));
+        //     this.y0 = cY + (h2 * GroupD8.uY(rotate));
+
+        //     rotate = GroupD8.add(rotate, 2); // rotate 90 degrees clockwise
+        //     this.x1 = cX + (w2 * GroupD8.uX(rotate));
+        //     this.y1 = cY + (h2 * GroupD8.uY(rotate));
+
+        //     rotate = GroupD8.add(rotate, 2);
+        //     this.x2 = cX + (w2 * GroupD8.uX(rotate));
+        //     this.y2 = cY + (h2 * GroupD8.uY(rotate));
+
+        //     rotate = GroupD8.add(rotate, 2);
+        //     this.x3 = cX + (w2 * GroupD8.uX(rotate));
+        //     this.y3 = cY + (h2 * GroupD8.uY(rotate));
+        // }
+        // else
+        // {
+            this.x0 = frame.x / tw;
+            this.y0 = frame.y / th;
+
+            this.x1 = (frame.x + frame.width) / tw;
+            this.y1 = frame.y / th;
+
+            this.x2 = (frame.x + frame.width) / tw;
+            this.y2 = (frame.y + frame.height) / th;
+
+            this.x3 = frame.x / tw;
+            this.y3 = (frame.y + frame.height) / th;
+        // }
+
+        this.uvsUint32[0] = (((this.y0 * 65535) & 0xFFFF) << 16) | ((this.x0 * 65535) & 0xFFFF);
+        this.uvsUint32[1] = (((this.y1 * 65535) & 0xFFFF) << 16) | ((this.x1 * 65535) & 0xFFFF);
+        this.uvsUint32[2] = (((this.y2 * 65535) & 0xFFFF) << 16) | ((this.x2 * 65535) & 0xFFFF);
+        this.uvsUint32[3] = (((this.y3 * 65535) & 0xFFFF) << 16) | ((this.x3 * 65535) & 0xFFFF);
+    }
+}

src/core/webgl/glCore/VertexArrayObject.ts

+
+// state object//
+import { setVertexAttribArrays } from './setVertexAttribArrays';
+
+/**
+ * Helper class to work with WebGL VertexArrayObjects (vaos)
+ * Only works if WebGL extensions are enabled (they usually are)
+ *
+ * @class
+ * @memberof glCore
+ * @param gl {WebGLRenderingContext} The current WebGL rendering context
+ */
+export class VertexArrayObject {
+    nativeVaoExtension: any;
+    nativeState: any;
+    nativeVao: any;
+    gl: any;
+    attributes: any[];
+    indexBuffer: any;
+    dirty: boolean;
+    constructor(gl, state) {
+        this.nativeVaoExtension = null;
+
+        if (!VertexArrayObject.FORCE_NATIVE) {
+            this.nativeVaoExtension = gl.getExtension('OES_vertex_array_object') ||
+                gl.getExtension('MOZ_OES_vertex_array_object') ||
+                gl.getExtension('WEBKIT_OES_vertex_array_object');
+        }
+
+        this.nativeState = state;
+
+        if (this.nativeVaoExtension) {
+            this.nativeVao = this.nativeVaoExtension.createVertexArrayOES();
+
+            var maxAttribs = gl.getParameter(gl.MAX_VERTEX_ATTRIBS);
+
+            // VAO - overwrite the state..
+            this.nativeState = {
+                tempAttribState: new Array(maxAttribs),
+                attribState: new Array(maxAttribs)
+            };
+        }
+
+        /**
+         * The current WebGL rendering context
+         *
+         * @member {WebGLRenderingContext}
+         */
+        this.gl = gl;
+
+        /**
+         * An array of attributes
+         *
+         * @member {Array}
+         */
+        this.attributes = [];
+
+        /**
+         * @member {glCore.GLBuffer}
+         */
+        this.indexBuffer = null;
+
+        /**
+         * A boolean flag
+         *
+         * @member {Boolean}
+         */
+        this.dirty = false;
+    };
+
+    /**
+     * Binds the buffer
+     */
+    public bind() {
+        if (this.nativeVao) {
+            this.nativeVaoExtension.bindVertexArrayOES(this.nativeVao);
+
+            if (this.dirty) {
+                this.dirty = false;
+                this.activate();
+                return this;
+            }
+            if (this.indexBuffer) {
+                this.indexBuffer.bind();
+            }
+        }
+        else {
+            this.activate();
+        }
+
+        return this;
+    };
+
+    /**
+     * Unbinds the buffer
+     */
+    public unbind() {
+        if (this.nativeVao) {
+            this.nativeVaoExtension.bindVertexArrayOES(null);
+        }
+
+        return this;
+    };
+
+    /**
+     * Uses this vao
+     */
+    public activate() {
+
+        var gl = this.gl;
+        var lastBuffer = null;
+
+        for (var i = 0; i < this.attributes.length; i++) {
+            var attrib = this.attributes[i];
+
+            if (lastBuffer !== attrib.buffer) {
+                attrib.buffer.bind();
+                lastBuffer = attrib.buffer;
+            }
+
+            gl.vertexAttribPointer(attrib.attribute.location,
+                attrib.attribute.size,
+                attrib.type || gl.FLOAT,
+                attrib.normalized || false,
+                attrib.stride || 0,
+                attrib.start || 0);
+        }
+
+        setVertexAttribArrays(gl, this.attributes, this.nativeState);
+
+        if (this.indexBuffer) {
+            this.indexBuffer.bind();
+        }
+
+        return this;
+    };
+
+    /**
+     *
+     * @param buffer     {gl.GLBuffer}
+     * @param attribute  {*}
+     * @param type       {String}
+     * @param normalized {Boolean}
+     * @param stride     {Number}
+     * @param start      {Number}
+     */
+    public addAttribute(buffer, attribute, type?, normalized?, stride?, start?) {
+        this.attributes.push({
+            buffer: buffer,
+            attribute: attribute,
+
+            location: attribute.location,
+            type: type || this.gl.FLOAT,
+            normalized: normalized || false,
+            stride: stride || 0,
+            start: start || 0
+        });
+
+        this.dirty = true;
+
+        return this;
+    };
+
+    /**
+     *
+     * @param buffer   {gl.GLBuffer}
+     */
+    public addIndex(buffer/*, options*/) {
+        this.indexBuffer = buffer;
+
+        this.dirty = true;
+
+        return this;
+    };
+
+    /**
+     * Unbinds this vao and disables it
+     */
+    public clear() {
+        // var gl = this.gl;
+
+        // TODO - should this function unbind after clear?
+        // for now, no but lets see what happens in the real world!
+        if (this.nativeVao) {
+            this.nativeVaoExtension.bindVertexArrayOES(this.nativeVao);
+        }
+
+        this.attributes.length = 0;
+        this.indexBuffer = null;
+
+        return this;
+    };
+
+    /**
+     * @param type  {Number}
+     * @param size  {Number}
+     * @param start {Number}
+     */
+    public draw(type, size?, start?) {
+        var gl = this.gl;
+
+        if (this.indexBuffer) {
+            gl.drawElements(type, size || this.indexBuffer.data.length, gl.UNSIGNED_SHORT, (start || 0) * 2);
+        }
+        else {
+            // TODO need a better way to calculate size..
+            gl.drawArrays(type, start || 0, size || this.getSize());
+        }
+
+        return this;
+    };
+
+    /**
+     * Destroy this vao
+     */
+    public destroy() {
+        // lose references
+        this.gl = null;
+        this.indexBuffer = null;
+        this.attributes = null;
+        this.nativeState = null;
+
+        if (this.nativeVao) {
+            this.nativeVaoExtension.deleteVertexArrayOES(this.nativeVao);
+        }
+
+        this.nativeVaoExtension = null;
+        this.nativeVao = null;
+    };
+
+    public getSize() {
+        var attrib = this.attributes[0];
+        return attrib.buffer.data.length / ((attrib.stride / 4) || attrib.attribute.size);
+    };
+
+    /**
+    * Some devices behave a bit funny when using the newer extensions (im looking at you ipad 2!)
+    * If you find on older devices that things have gone a bit weird then set this to true.
+    */
+    /**
+     * Lets the VAO know if you should use the WebGL extension or the native methods.
+     * Some devices behave a bit funny when using the newer extensions (im looking at you ipad 2!)
+     * If you find on older devices that things have gone a bit weird then set this to true.
+     * @static
+     * @property {Boolean} FORCE_NATIVE
+     */
+    public static FORCE_NATIVE = false;
+
+}
+
+
+
+

src/core/webgl/glCore/checkMaxIfStatmentsInShader.ts

+import { createContext } from './createContext';
+
+const fragTemplate = [
+    'precision mediump float;',
+    'void main(void){',
+    'float test = 0.1;',
+    '%forloop%',
+    'gl_FragColor = vec4(0.0);',
+    '}',
+].join('\n');
+
+export function checkMaxIfStatmentsInShader(maxIfs, gl) {
+    const createTempContext = !gl;
+
+    // @if DEBUG
+    if (maxIfs === 0) {
+        throw new Error('Invalid value of `0` passed to `checkMaxIfStatementsInShader`');
+    }
+    // @endif
+
+    if (createTempContext) {
+        const tinyCanvas = document.createElement('canvas');
+
+        tinyCanvas.width = 1;
+        tinyCanvas.height = 1;
+
+        gl = createContext(tinyCanvas);
+    }
+
+    const shader = gl.createShader(gl.FRAGMENT_SHADER);
+
+    while (true) // eslint-disable-line no-constant-condition
+    {
+        const fragmentSrc = fragTemplate.replace(/%forloop%/gi, generateIfTestSrc(maxIfs));
+
+        gl.shaderSource(shader, fragmentSrc);
+        gl.compileShader(shader);
+
+        if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
+            maxIfs = (maxIfs / 2) | 0;
+        }
+        else {
+            // valid!
+            break;
+        }
+    }
+
+    if (createTempContext) {
+        // get rid of context
+        if (gl.getExtension('WEBGL_lose_context')) {
+            gl.getExtension('WEBGL_lose_context').loseContext();
+        }
+    }
+
+    return maxIfs;
+}
+
+function generateIfTestSrc(maxIfs) {
+    let src = '';
+
+    for (let i = 0; i < maxIfs; ++i) {
+        if (i > 0) {
+            src += '\nelse ';
+        }
+
+        if (i < maxIfs - 1) {
+            src += `if(test == ${i}.0){}`;
+        }
+    }
+
+    return src;
+}

src/core/webgl/glCore/createContext.ts

+
+/**
+ * Helper class to create a webGL Context
+ *
+ * @class
+ * @memberof glCore
+ * @param canvas {HTMLCanvasElement} the canvas element that we will get the context from
+ * @param options {Object} An options object that gets passed in to the canvas element containing the context attributes,
+ *                         see https://developer.mozilla.org/en/docs/Web/API/HTMLCanvasElement/getContext for the options available
+ * @return {WebGLRenderingContext} the WebGL context
+ */
+export function createContext(canvas, options?) {
+    var gl = canvas.getContext('webgl', options) ||
+        canvas.getContext('experimental-webgl', options);
+
+    if (!gl) {
+        // fail, not able to get a context
+        throw new Error('This browser does not support webGL. Try using the canvas renderer');
+    }
+
+    return gl;
+};
\ No newline at end of file

src/core/webgl/glCore/createIndicesForQuads.ts

+/**
+ * Generic Mask Stack data structure
+ *
+ * @function createIndicesForQuads
+ * @private
+ * @param {number} size - Number of quads
+ * @return {Uint16Array} indices
+ */
+export function createIndicesForQuads(size)
+{
+    // the total number of indices in our array, there are 6 points per quad.
+
+    const totalIndices = size * 6;
+
+    const indices = new Uint16Array(totalIndices);
+
+    // fill the indices with the quads to draw
+    for (let i = 0, j = 0; i < totalIndices; i += 6, j += 4)
+    {
+        indices[i + 0] = j + 0;
+        indices[i + 1] = j + 1;
+        indices[i + 2] = j + 2;
+        indices[i + 3] = j + 0;
+        indices[i + 4] = j + 2;
+        indices[i + 5] = j + 3;
+    }
+
+    return indices;
+}

src/core/webgl/glCore/generateMultiTextureShader.ts

+import { GLShader } from './GLShader';
+//顶点着色器程序
+const VSHADER_SOURCE =
+    " precision highp float;" +
+    "attribute vec2 aVertexPosition;" +
+    "attribute vec2 aTextureCoord;" +
+    "attribute vec4 aColor;" +
+    "attribute float aTextureId;" +
+
+    "uniform mat3 projectionMatrix;" +
+    "uniform mat3 modelMatrix;" +
+
+    "varying vec2 vTextureCoord;" +
+    "varying vec4 vColor;" +
+    "varying float vTextureId;" +
+
+    "void main(void){" +
+    "gl_Position = vec4((projectionMatrix * vec3(aVertexPosition, 1.0)).xy, 0.0, 1.0);" +
+    // "gl_Position = vec4((projectionMatrix *modelMatrix* vec3(aVertexPosition, 1.0)).xy, 0.0, 1.0);" +
+    "vTextureCoord = aTextureCoord;" +
+    "vTextureId = aTextureId;" +
+    "vColor = aColor;" +
+    "}";
+const fragTemplate = [
+    'precision mediump float;',
+    'varying vec2 vTextureCoord;',
+    'varying vec4 vColor;',
+    'varying float vTextureId;',
+    'uniform sampler2D uSamplers[%count%];',
+
+    'void main(void){',
+    'vec4 color;',
+    'float textureId = floor(vTextureId+0.5);',
+    '%forloop%',
+    'gl_FragColor = color * vColor;',
+    '}',
+].join('\n');
+
+
+
+export function generateMultiTextureShader(gl, maxTextures) {
+    // const vertexSrc = readFileSync(join(__dirname, './texture.vert'), 'utf8');
+    let fragmentSrc = fragTemplate;
+
+    fragmentSrc = fragmentSrc.replace(/%count%/gi, maxTextures);
+    fragmentSrc = fragmentSrc.replace(/%forloop%/gi, generateSampleSrc(maxTextures));
+// console.log(fragmentSrc)
+    const shader = new GLShader(gl, VSHADER_SOURCE, fragmentSrc);
+
+    const sampleValues = [];
+
+    for (let i = 0; i < maxTextures; i++) {
+        sampleValues[i] = i;
+    }
+
+    shader.bind();
+    shader.uniforms["uSamplers"] = sampleValues;
+    // console.log(fragmentSrc)
+    return shader;
+}
+
+function generateSampleSrc(maxTextures) {
+    let src = '';
+
+    src += '\n';
+    src += '\n';
+
+    for (let i = 0; i < maxTextures; i++) {
+        if (i > 0) {
+            src += '\nelse ';
+        }
+
+        if (i < maxTextures - 1) {
+            src += `if(textureId == ${i}.0)`;
+        }
+
+        src += '\n{';
+        src += `\n\tcolor = texture2D(uSamplers[${i}], vTextureCoord);`;
+        src += '\n}';
+    }
+
+    src += '\n';
+    src += '\n';
+
+    return src;
+}

src/core/webgl/glCore/index.ts

+// export { default as GroupD8 } from './GroupD8';
+
+export { GLTexture } from './GLTexture';
+export { GLBuffer } from './GLBuffer';
+export { VertexArrayObject } from './VertexArrayObject';
+export { GLFramebuffer } from "./GLFramebuffer";
+export { GLShader } from "./GLShader";
+
+export { TextureUvs } from "./TextureUvs";
+export { checkMaxIfStatmentsInShader } from "./checkMaxIfStatmentsInShader"

src/core/webgl/glCore/setVertexAttribArrays.ts

+// var GL_MAP = {};
+
+/**
+ * @param gl {WebGLRenderingContext} The current WebGL context
+ * @param attribs {*}
+ * @param state {*}
+ */
+export function setVertexAttribArrays(gl, attribs, state?) {
+    var i;
+    if (state) {
+        var tempAttribState = state.tempAttribState,
+            attribState = state.attribState;
+
+        for (i = 0; i < tempAttribState.length; i++) {
+            tempAttribState[i] = false;
+        }
+
+        // set the new attribs
+        for (i = 0; i < attribs.length; i++) {
+            tempAttribState[attribs[i].attribute.location] = true;
+        }
+
+        for (i = 0; i < attribState.length; i++) {
+            if (attribState[i] !== tempAttribState[i]) {
+                attribState[i] = tempAttribState[i];
+
+                if (state.attribState[i]) {
+                    gl.enableVertexAttribArray(i);
+                }
+                else {
+                    gl.disableVertexAttribArray(i);
+                }
+            }
+        }
+
+    }
+    else {
+        for (i = 0; i < attribs.length; i++) {
+            var attrib = attribs[i];
+            gl.enableVertexAttribArray(attrib.attribute.location);
+        }
+    }
+};
\ No newline at end of file

src/core/webgl/glCore/shader/compileProgram.ts

+
+/**
+ * @class
+ * @memberof glCore.shader
+ * @param gl {WebGLRenderingContext} The current WebGL context {WebGLProgram}
+ * @param vertexSrc {string|string[]} The vertex shader source as an array of strings.
+ * @param fragmentSrc {string|string[]} The fragment shader source as an array of strings.
+ * @param attributeLocations {Object} An attribute location map that lets you manually set the attribute locations
+ * @return {WebGLProgram} the shader program
+ */
+export function compileProgram(gl, vertexSrc, fragmentSrc, attributeLocations?) {
+    var glVertShader = compileShader(gl, gl.VERTEX_SHADER, vertexSrc);
+    var glFragShader = compileShader(gl, gl.FRAGMENT_SHADER, fragmentSrc);
+
+    var program = gl.createProgram();
+
+    gl.attachShader(program, glVertShader);
+    gl.attachShader(program, glFragShader);
+
+    // optionally, set the attributes manually for the program rather than letting WebGL decide..
+    if (attributeLocations) {
+        for (var i in attributeLocations) {
+            gl.bindAttribLocation(program, attributeLocations[i], i);
+        }
+    }
+
+
+    gl.linkProgram(program);
+
+    // if linking fails, then log and cleanup
+    if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
+        console.error('Error: Could not initialize shader.');
+        console.error('gl.VALIDATE_STATUS', gl.getProgramParameter(program, gl.VALIDATE_STATUS));
+        console.error('gl.getError()', gl.getError());
+
+        // if there is a program info log, log it
+        if (gl.getProgramInfoLog(program) !== '') {
+            console.warn('Warning: gl.getProgramInfoLog()', gl.getProgramInfoLog(program));
+        }
+
+        gl.deleteProgram(program);
+        program = null;
+    }
+
+    // clean up some shaders
+    gl.deleteShader(glVertShader);
+    gl.deleteShader(glFragShader);
+
+    return program;
+};
+
+/**
+ * @private
+ * @param gl {WebGLRenderingContext} The current WebGL context {WebGLProgram}
+ * @param type {Number} the type, can be either VERTEX_SHADER or FRAGMENT_SHADER
+ * @param vertexSrc {string|string[]} The vertex shader source as an array of strings.
+ * @return {WebGLShader} the shader
+ */
+var compileShader = function (gl, type, src) {
+    var shader = gl.createShader(type);
+
+    gl.shaderSource(shader, src);
+    gl.compileShader(shader);
+
+    if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
+        console.log(gl.getShaderInfoLog(shader));
+        return null;
+    }
+
+    return shader;
+};

src/core/webgl/glCore/shader/defaultValue.ts

+/**
+ * @class
+ * @memberof glCore.shader
+ * @param type {String} Type of value
+ * @param size {Number}
+ */
+export function defaultValue(type, size) {
+    switch (type) {
+        case 'float':
+            return 0;
+
+        case 'vec2':
+            return new Float32Array(2 * size);
+
+        case 'vec3':
+            return new Float32Array(3 * size);
+
+        case 'vec4':
+            return new Float32Array(4 * size);
+
+        case 'int':
+        case 'sampler2D':
+            return 0;
+
+        case 'ivec2':
+            return new Int32Array(2 * size);
+
+        case 'ivec3':
+            return new Int32Array(3 * size);
+
+        case 'ivec4':
+            return new Int32Array(4 * size);
+
+        case 'bool':
+            return false;
+
+        case 'bvec2':
+
+            return booleanArray(2 * size);
+
+        case 'bvec3':
+            return booleanArray(3 * size);
+
+        case 'bvec4':
+            return booleanArray(4 * size);
+
+        case 'mat2':
+            return new Float32Array([1, 0,
+                0, 1]);
+
+        case 'mat3':
+            return new Float32Array([1, 0, 0,
+                0, 1, 0,
+                0, 0, 1]);
+
+        case 'mat4':
+            return new Float32Array([1, 0, 0, 0,
+                0, 1, 0, 0,
+                0, 0, 1, 0,
+                0, 0, 0, 1]);
+    }
+};
+
+var booleanArray = function (size) {
+    var array = new Array(size);
+
+    for (var i = 0; i < array.length; i++) {
+        array[i] = false;
+    }
+
+    return array;
+};
+
+

src/core/webgl/glCore/shader/extractAttributes.ts

+
+import { mapType } from './mapType';
+import { mapSize } from './mapSize';
+
+/**
+ * Extracts the attributes
+ * @class
+ * @memberof glCore.shader
+ * @param gl {WebGLRenderingContext} The current WebGL rendering context
+ * @param program {WebGLProgram} The shader program to get the attributes from
+ * @return attributes {Object}
+ */
+export function extractAttributes(gl, program) {
+    var attributes = {};
+
+    var totalAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);
+
+    for (var i = 0; i < totalAttributes; i++) {
+        var attribData = gl.getActiveAttrib(program, i);
+        var type = mapType(gl, attribData.type);
+
+        attributes[attribData.name] = {
+            type: type,
+            size: mapSize(type),
+            location: gl.getAttribLocation(program, attribData.name),
+            //TODO - make an attribute object
+            pointer: function (type = gl.FLOAT, normalized = false, stride = 0, start = 0) {
+                // console.log(this.location)
+                gl.vertexAttribPointer(this.location, this.size, type, normalized, stride, start);
+            }
+        };
+    }
+
+    return attributes;
+};

src/core/webgl/glCore/shader/extractUniforms.ts

+import { mapType } from './mapType';
+import { defaultValue } from './defaultValue';
+
+/**
+ * Extracts the uniforms
+ * @class
+ * @memberof glCore.shader
+ * @param gl {WebGLRenderingContext} The current WebGL rendering context
+ * @param program {WebGLProgram} The shader program to get the uniforms from
+ * @return uniforms {Object}
+ */
+export function extractUniforms(gl, program) {
+	var uniforms = {};
+
+	var totalUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
+
+	for (var i = 0; i < totalUniforms; i++) {
+		var uniformData = gl.getActiveUniform(program, i);
+		var name = uniformData.name.replace(/\[.*?\]/, "");
+		var type = mapType(gl, uniformData.type);
+
+		uniforms[name] = {
+			type: type,
+			size: uniformData.size,
+			location: gl.getUniformLocation(program, name),
+			value: defaultValue(type, uniformData.size)
+		};
+	}
+
+	return uniforms;
+};
+

src/core/webgl/glCore/shader/generateUniformAccessObject.ts

+/**
+ * Extracts the attributes
+ * @class
+ * @memberof glCore.shader
+ * @param gl {WebGLRenderingContext} The current WebGL rendering context
+ * @param uniforms {Array} @mat ?
+ * @return attributes {Object}
+ */
+export function generateUniformAccessObject(gl, uniformData) {
+    // this is the object we will be sending back.
+    // an object hierachy will be created for structs
+    var uniforms = { data: {} };
+
+    uniforms["gl"] = gl;
+
+    var uniformKeys = Object.keys(uniformData);
+
+    for (var i = 0; i < uniformKeys.length; i++) {
+        var fullName = uniformKeys[i];
+
+        var nameTokens = fullName.split('.');
+        var name = nameTokens[nameTokens.length - 1];
+
+
+        var uniformGroup = getUniformGroup(nameTokens, uniforms);
+
+        var uniform = uniformData[fullName];
+        uniformGroup.data[name] = uniform;
+
+        uniformGroup.gl = gl;
+
+        Object.defineProperty(uniformGroup, name, {
+            get: generateGetter(name),
+            set: generateSetter(name, uniform)
+        });
+    }
+
+    return uniforms;
+};
+
+var generateGetter = function (name) {
+    return function () {
+        return this.data[name].value;
+    };
+};
+
+var GLSL_SINGLE_SETTERS = {
+    float: function setSingleFloat(gl, location, value) { gl.uniform1f(location, value); },
+    vec2: function setSingleVec2(gl, location, value) { gl.uniform2f(location, value[0], value[1]); },
+    vec3: function setSingleVec3(gl, location, value) { gl.uniform3f(location, value[0], value[1], value[2]); },
+    vec4: function setSingleVec4(gl, location, value) { gl.uniform4f(location, value[0], value[1], value[2], value[3]); },
+
+    int: function setSingleInt(gl, location, value) { gl.uniform1i(location, value); },
+    ivec2: function setSingleIvec2(gl, location, value) { gl.uniform2i(location, value[0], value[1]); },
+    ivec3: function setSingleIvec3(gl, location, value) { gl.uniform3i(location, value[0], value[1], value[2]); },
+    ivec4: function setSingleIvec4(gl, location, value) { gl.uniform4i(location, value[0], value[1], value[2], value[3]); },
+
+    bool: function setSingleBool(gl, location, value) { gl.uniform1i(location, value); },
+    bvec2: function setSingleBvec2(gl, location, value) { gl.uniform2i(location, value[0], value[1]); },
+    bvec3: function setSingleBvec3(gl, location, value) { gl.uniform3i(location, value[0], value[1], value[2]); },
+    bvec4: function setSingleBvec4(gl, location, value) { gl.uniform4i(location, value[0], value[1], value[2], value[3]); },
+
+    mat2: function setSingleMat2(gl, location, value) { gl.uniformMatrix2fv(location, false, value); },
+    mat3: function setSingleMat3(gl, location, value) { gl.uniformMatrix3fv(location, false, value); },
+    mat4: function setSingleMat4(gl, location, value) { gl.uniformMatrix4fv(location, false, value); },
+
+    sampler2D: function setSingleSampler2D(gl, location, value) { gl.uniform1i(location, value); },
+};
+
+var GLSL_ARRAY_SETTERS = {
+    float: function setFloatArray(gl, location, value) { gl.uniform1fv(location, value); },
+    vec2: function setVec2Array(gl, location, value) { gl.uniform2fv(location, value); },
+    vec3: function setVec3Array(gl, location, value) { gl.uniform3fv(location, value); },
+    vec4: function setVec4Array(gl, location, value) { gl.uniform4fv(location, value); },
+    int: function setIntArray(gl, location, value) { gl.uniform1iv(location, value); },
+    ivec2: function setIvec2Array(gl, location, value) { gl.uniform2iv(location, value); },
+    ivec3: function setIvec3Array(gl, location, value) { gl.uniform3iv(location, value); },
+    ivec4: function setIvec4Array(gl, location, value) { gl.uniform4iv(location, value); },
+    bool: function setBoolArray(gl, location, value) { gl.uniform1iv(location, value); },
+    bvec2: function setBvec2Array(gl, location, value) { gl.uniform2iv(location, value); },
+    bvec3: function setBvec3Array(gl, location, value) { gl.uniform3iv(location, value); },
+    bvec4: function setBvec4Array(gl, location, value) { gl.uniform4iv(location, value); },
+    sampler2D: function setSampler2DArray(gl, location, value) { gl.uniform1iv(location, value); },
+};
+
+function generateSetter(name, uniform) {
+    return function (value) {
+        this.data[name].value = value;
+        var location = this.data[name].location;
+        if (uniform.size === 1) {
+            GLSL_SINGLE_SETTERS[uniform.type](this.gl, location, value);
+        }
+        else {
+            // glslSetArray(gl, location, type, value) {
+            GLSL_ARRAY_SETTERS[uniform.type](this.gl, location, value);
+        }
+    };
+}
+
+function getUniformGroup(nameTokens, uniform) {
+    var cur = uniform;
+
+    for (var i = 0; i < nameTokens.length - 1; i++) {
+        var o = cur[nameTokens[i]] || { data: {} };
+        cur[nameTokens[i]] = o;
+        cur = o;
+    }
+
+    return cur;
+}
+
+
+

src/core/webgl/glCore/shader/index.ts

+
+export { compileProgram } from './compileProgram';
+export { defaultValue } from './defaultValue';
+export { extractAttributes } from './extractAttributes';
+export { extractUniforms } from './extractUniforms';
+export { generateUniformAccessObject } from './generateUniformAccessObject';
+export { setPrecision } from './setPrecision';
+export { mapSize } from './mapSize';
+export { mapType } from './mapType';
+
+

src/core/webgl/glCore/shader/mapSize.ts

+/**
+ * @class
+ * @memberof glCore.shader
+ * @param type {String}
+ * @return {Number}
+ */
+export function mapSize(type) {
+    return GLSL_TO_SIZE[type];
+};
+
+
+var GLSL_TO_SIZE = {
+    'float': 1,
+    'vec2': 2,
+    'vec3': 3,
+    'vec4': 4,
+
+    'int': 1,
+    'ivec2': 2,
+    'ivec3': 3,
+    'ivec4': 4,
+
+    'bool': 1,
+    'bvec2': 2,
+    'bvec3': 3,
+    'bvec4': 4,
+
+    'mat2': 4,
+    'mat3': 9,
+    'mat4': 16,
+
+    'sampler2D': 1
+};
\ No newline at end of file

src/core/webgl/glCore/shader/mapType.ts

+
+
+export function mapType(gl, type) {
+    if (!GL_TABLE) {
+        var typeNames = Object.keys(GL_TO_GLSL_TYPES);
+
+        GL_TABLE = {};
+
+        for (var i = 0; i < typeNames.length; ++i) {
+            var tn = typeNames[i];
+            GL_TABLE[gl[tn]] = GL_TO_GLSL_TYPES[tn];
+        }
+    }
+
+    return GL_TABLE[type];
+};
+
+var GL_TABLE = null;
+
+var GL_TO_GLSL_TYPES = {
+    'FLOAT': 'float',
+    'FLOAT_VEC2': 'vec2',
+    'FLOAT_VEC3': 'vec3',
+    'FLOAT_VEC4': 'vec4',
+
+    'INT': 'int',
+    'INT_VEC2': 'ivec2',
+    'INT_VEC3': 'ivec3',
+    'INT_VEC4': 'ivec4',
+
+    'BOOL': 'bool',
+    'BOOL_VEC2': 'bvec2',
+    'BOOL_VEC3': 'bvec3',
+    'BOOL_VEC4': 'bvec4',
+
+    'FLOAT_MAT2': 'mat2',
+    'FLOAT_MAT3': 'mat3',
+    'FLOAT_MAT4': 'mat4',
+
+    'SAMPLER_2D': 'sampler2D'
+};
+

src/core/webgl/glCore/shader/setPrecision.ts

+/**
+ * Sets the float precision on the shader. If the precision is already present this function will do nothing
+ * @param {string} src       the shader source
+ * @param {string} precision The float precision of the shader. Options are 'lowp', 'mediump' or 'highp'.
+ *
+ * @return {string} modified shader source
+ */
+export function setPrecision(src, precision) {
+    if (src.substring(0, 9) !== 'precision') {
+        return 'precision ' + precision + ' float;\n' + src;
+    }
+
+    return src;
+};
\ No newline at end of file

src/core/webgl/managers/MaskManager.ts

+
+// import AlphaMaskFilter from '../filters/spriteMask/SpriteMaskFilter';
+
+/**
+ * @class
+ */
+export default class MaskManager {
+    renderer: any;
+    scissor: boolean;
+    scissorData: any;
+    scissorRenderTarget: any;
+    enableScissor: boolean;
+    /**
+     * @param {WebGLRenderer} renderer - The renderer this manager works for.
+     */
+    constructor(renderer) {
+        this.renderer = renderer
+
+        // TODO - we don't need both!
+        this.scissor = false;
+        this.scissorData = null;
+        this.scissorRenderTarget = null;
+
+        this.enableScissor = true;
+
+        // this.alphaMaskPool = [];
+        // this.alphaMaskIndex = 0;
+    }
+
+    /**
+     * Applies the Mask and adds it to the current filter stack.
+     *
+     * @param {DisplayObject} target - Display Object to push the mask to
+     * @param {Sprite|Graphics} maskData - The masking data.
+     */
+    pushMask(target, maskData) {
+        // TODO the root check means scissor rect will not
+        // be used on render textures more info here:
+        if (this.enableScissor
+            && !this.scissor
+            && this.renderer._activeRenderTarget.root
+            && !this.renderer.stencilManager.stencilMaskStack.length
+            && maskData.maskType == "aaaa") {//Scissor还有问题，再处理
+            const matrix = maskData.transform.getMatrix();
+
+            let rot = Math.atan2(matrix.b, matrix.a);
+
+            // use the nearest degree!
+            rot = Math.round(rot * (180 / Math.PI));
+
+            if (rot % 90) {
+                this.pushStencilMask(maskData);
+            }
+            else {
+                this.pushScissorMask(target, maskData);
+            }
+        }
+        else {
+            this.pushStencilMask(maskData);
+        }
+    }
+
+    /**
+     * Removes the last mask from the mask stack and doesn't return it.
+     *
+     * @param {DisplayObject} target - Display Object to pop the mask from
+     * @param {Sprite|Graphics} maskData - The masking data.
+     */
+    popMask(target, maskData) {
+
+        if (this.enableScissor && !this.renderer.stencilManager.stencilMaskStack.length) {
+            this.popScissorMask(target, maskData);
+        }
+        else {
+            this.popStencilMask(target, maskData);
+        }
+    }
+
+    /**
+     * Applies the Mask and adds it to the current filter stack.
+     *
+     * @param {RenderTarget} target - Display Object to push the sprite mask to
+     * @param {Sprite} maskData - Sprite to be used as the mask
+     */
+    // pushSpriteMask(target, maskData)
+    // {
+    //     let alphaMaskFilter = this.alphaMaskPool[this.alphaMaskIndex];
+
+    //     if (!alphaMaskFilter)
+    //     {
+    //         alphaMaskFilter = this.alphaMaskPool[this.alphaMaskIndex] = [new AlphaMaskFilter(maskData)];
+    //     }
+
+    //     alphaMaskFilter[0].resolution = this.renderer.resolution;
+    //     alphaMaskFilter[0].maskSprite = maskData;
+
+    //     // TODO - may cause issues!
+    //     target.filterArea = maskData.getBounds(true);
+
+    //     this.renderer.filterManager.pushFilter(target, alphaMaskFilter);
+
+    //     this.alphaMaskIndex++;
+    // }
+
+    /**
+     * Removes the last filter from the filter stack and doesn't return it.
+     *
+     */
+    // popSpriteMask()
+    // {
+    //     this.renderer.filterManager.popFilter();
+    //     this.alphaMaskIndex--;
+    // }
+
+    /**
+     * Applies the Mask and adds it to the current filter stack.
+     *
+     * @param {Sprite|Graphics} maskData - The masking data.
+     */
+    pushStencilMask(maskData) {
+        this.renderer.currentRenderer.stop();
+        this.renderer.stencilManager.pushStencil(maskData);
+    }
+
+    /**
+     * Removes the last filter from the filter stack and doesn't return it.
+     *
+     */
+    popStencilMask(target, maskData) {
+        this.renderer.currentRenderer.stop();
+        this.renderer.stencilManager.popStencil();
+    }
+
+    /**
+     *
+     * @param {DisplayObject} target - Display Object to push the mask to
+     * @param {Graphics} maskData - The masking data.
+     */
+    pushScissorMask(target, maskData) {
+        maskData.renderable = true;
+
+        const renderTarget = this.renderer._activeRenderTarget;
+
+        const bounds = maskData.scissorMaskBounds();
+
+        this.fit(bounds,renderTarget.size);
+
+        this.renderer.gl.enable(this.renderer.gl.SCISSOR_TEST);
+
+        this.renderer.gl.scissor(
+            bounds.x,
+            (renderTarget.root ? renderTarget.size.height - bounds.y - bounds.height : bounds.y),
+            bounds.width,
+            bounds.height
+        );
+
+        this.scissorRenderTarget = renderTarget;
+        this.scissorData = maskData;
+        this.scissor = true;
+    }
+
+    /**
+     *
+     *
+     */
+    popScissorMask(target, maskData) {
+        // this.scissorRenderTarget = null;
+        // this.scissorData = null;
+        this.scissor = false;
+
+        // must be scissor!
+        const gl = this.renderer.gl;
+
+        gl.disable(gl.SCISSOR_TEST);
+    }
+
+    destroy() {
+
+    }
+
+    fit(bounds,rectangle) {
+        if (bounds.x < rectangle.x) {
+            bounds.width += bounds.x;
+            if (bounds.width < 0) {
+                bounds.width = 0;
+            }
+
+            bounds.x = rectangle.x;
+        }
+
+        if (bounds.y < rectangle.y) {
+            bounds.height += bounds.y;
+            if (bounds.height < 0) {
+                bounds.height = 0;
+            }
+            bounds.y = rectangle.y;
+        }
+
+        if (bounds.x + bounds.width > rectangle.x + rectangle.width) {
+            bounds.width = rectangle.width - bounds.x;
+            if (bounds.width < 0) {
+                bounds.width = 0;
+            }
+        }
+
+        if (bounds.y + bounds.height > rectangle.y + rectangle.height) {
+            bounds.height = rectangle.height - bounds.y;
+            if (bounds.height < 0) {
+                bounds.height = 0;
+            }
+        }
+    }
+}

src/core/webgl/managers/StencilManager.ts

+
+
+/**
+ * @class
+ */
+export default class StencilManager {
+    renderer: any;
+    stencilMaskStack: any;
+    /**
+     * @param {WebGLRenderer} renderer - The renderer this manager works for.
+     */
+    constructor(renderer) {
+        this.renderer = renderer
+        this.stencilMaskStack = null;
+    }
+
+    /**
+     * Changes the mask stack that is used by this manager.
+     *
+     * @param {Graphics[]} stencilMaskStack - The mask stack
+     */
+    setMaskStack(stencilMaskStack) {
+        this.stencilMaskStack = stencilMaskStack;
+
+        const gl = this.renderer.gl;
+
+        if (stencilMaskStack.length === 0) {
+            gl.disable(gl.STENCIL_TEST);
+        }
+        else {
+            gl.enable(gl.STENCIL_TEST);
+        }
+    }
+
+    /**
+     * Applies the Mask and adds it to the current stencil stack. @alvin
+     *
+     * @param {Graphics} graphics - The mask
+     */
+    pushStencil(graphics) {
+        this.renderer.setObjectRenderer(this.renderer.plugins.graphics);
+
+        this.renderer._activeRenderTarget.attachStencilBuffer();
+
+        const gl = this.renderer.gl;
+        const prevMaskCount = this.stencilMaskStack.length;
+
+        if (prevMaskCount === 0) {
+            gl.enable(gl.STENCIL_TEST);
+        }
+
+        this.stencilMaskStack.push(graphics);
+
+        // Increment the refference stencil value where the new mask overlaps with the old ones.
+        if(graphics.maskVisible){
+            //如果显示遮罩
+            gl.colorMask(true, true, true, true);
+        }else{
+            gl.colorMask(false, false, false, false);
+        }
+        // gl.colorMask(true, true, true, true);
+        gl.stencilFunc(gl.EQUAL, prevMaskCount, this._getBitwiseMask());
+        gl.stencilOp(gl.KEEP, gl.KEEP, gl.INCR);
+        this.renderer.plugins.graphics.render(graphics);
+ 
+        this._useCurrent();
+    }
+
+    /**
+     * Removes the last mask from the stencil stack. @alvin
+     */
+    popStencil() {
+        this.renderer.setObjectRenderer(this.renderer.plugins.graphics);
+
+        const gl = this.renderer.gl;
+        const graphics = this.stencilMaskStack.pop();
+
+        if (this.stencilMaskStack.length === 0) {
+            // the stack is empty!
+            gl.disable(gl.STENCIL_TEST);
+            gl.clear(gl.STENCIL_BUFFER_BIT);
+            gl.clearStencil(0);
+        }
+        else {
+            // Decrement the refference stencil value where the popped mask overlaps with the other ones
+            gl.colorMask(false, false, false, false);
+            gl.stencilOp(gl.KEEP, gl.KEEP, gl.DECR);
+            this.renderer.plugins.graphics.render(graphics);
+
+            this._useCurrent();
+        }
+    }
+
+    /**
+     * Setup renderer to use the current stencil data.
+     */
+    _useCurrent() {
+        const gl = this.renderer.gl;
+
+        gl.colorMask(true, true, true, true);
+        gl.stencilFunc(gl.EQUAL, this.stencilMaskStack.length, this._getBitwiseMask());
+        gl.stencilOp(gl.KEEP, gl.KEEP, gl.KEEP);
+    }
+
+    /**
+     * Fill 1s equal to the number of acitve stencil masks.
+     *
+     * @return {number} The bitwise mask.
+     */
+    _getBitwiseMask() {
+        return (1 << this.stencilMaskStack.length) - 1;
+    }
+
+    /**
+     * Destroys the mask stack.
+     *
+     */
+    destroy() {
+        
+        this.renderer = null;
+        this.stencilMaskStack.stencilStack = null;
+    }
+}

src/core/webgl/managers/TextureGarbageCollector.ts

+import { GC_MODES } from '../const';
+import settings from '../settings';
+
+/**
+ * TextureGarbageCollector. This class manages the GPU and ensures that it does not get clogged
+ * up with textures that are no longer being used.
+ *
+ * @class
+ * @memberof PIXI
+ */
+export default class TextureGarbageCollector {
+    renderer: any;
+    count: number;
+    checkCount: number;
+    maxIdle: number;
+    checkCountMax: number;
+    mode: number;
+    /**
+     * @param {WebGLRenderer} renderer - The renderer this manager works for.
+     */
+    constructor(renderer) {
+        this.renderer = renderer;
+
+        this.count = 0;
+        this.checkCount = 0;
+        this.maxIdle = settings.GC_MAX_IDLE;
+        this.checkCountMax = settings.GC_MAX_CHECK_COUNT;
+        this.mode = settings.GC_MODE;
+    }
+
+    /**
+     * Checks to see when the last time a texture was used
+     * if the texture has not been used for a specified amount of time it will be removed from the GPU
+     */
+    update() {
+        this.count++;
+
+        if (this.mode === GC_MODES.MANUAL) {
+            return;
+        }
+
+        this.checkCount++;
+
+        if (this.checkCount > this.checkCountMax) {
+            this.checkCount = 0;
+
+            this.run();
+        }
+    }
+
+    /**
+     * Checks to see when the last time a texture was used
+     * if the texture has not been used for a specified amount of time it will be removed from the GPU
+     */
+    run() {
+        const tm = this.renderer.textureManager;
+        const managedTextures = tm._managedTextures;
+        let wasRemoved = false;
+
+        for (let i = 0; i < managedTextures.length; i++) {
+            const texture = managedTextures[i];
+
+            // only supports non generated textures at the moment!
+            if (!texture._glRenderTargets && this.count - texture.touched > this.maxIdle) {
+                tm.destroyTexture(texture, true);
+                managedTextures[i] = null;
+                wasRemoved = true;
+            }
+        }
+
+        if (wasRemoved) {
+            let j = 0;
+
+            for (let i = 0; i < managedTextures.length; i++) {
+                if (managedTextures[i] !== null) {
+                    managedTextures[j++] = managedTextures[i];
+                }
+            }
+
+            managedTextures.length = j;
+        }
+    }
+
+    /**
+     * Removes all the textures within the specified displayObject and its children from the GPU
+     *
+     * @param {DisplayObject} displayObject - the displayObject to remove the textures from.
+     */
+    unload(displayObject) {
+        const tm = this.renderer.textureManager;
+
+        // only destroy non generated textures
+        if (displayObject._texture && displayObject._texture._glRenderTargets) {
+            tm.destroyTexture(displayObject._texture, true);
+        }
+
+        for (let i = displayObject.children.length - 1; i >= 0; i--) {
+            this.unload(displayObject.children[i]);
+        }
+    }
+}

src/core/webgl/managers/TextureManager.ts

+import { GLTexture } from '../glCore';
+import { WRAP_MODES, SCALE_MODES } from '../const';
+import RenderTarget from '../utils/RenderTarget';
+import removeItems from '../utils/removeItems';
+
+import {isPow2} from "../utils"
+/**
+ * Helper class to create a webGL Texture
+ *
+ * @class
+ */
+export default class TextureManager {
+    renderer: any;
+    gl: any;
+    _managedTextures: any[];
+    /**
+     * @param {WebGLRenderer} renderer - A reference to the current renderer
+     */
+    constructor(renderer) {
+        /**
+         * A reference to the current renderer
+         *
+         * @member {PIXI.WebGLRenderer}
+         */
+        this.renderer = renderer;
+
+        /**
+         * The current WebGL rendering context
+         *
+         * @member {WebGLRenderingContext}
+         */
+        this.gl = renderer.gl;
+
+        /**
+         * Track textures in the renderer so we can no longer listen to them on destruction.
+         *
+         * @member {Array<*>}
+         * @private
+         */
+        this._managedTextures = [];
+    }
+
+    /**
+     * Binds a texture.
+     *
+     */
+    bindTexture() {
+        // empty
+    }
+
+    /**
+     * Gets a texture.
+     *
+     */
+    getTexture() {
+        // empty
+    }
+
+    /**
+     * Updates and/or Creates a WebGL texture for the renderer's context.
+     *
+     * @param {PIXI.BaseTexture|PIXI.Texture} texture - the texture to update
+     * @param {number} location - the location the texture will be bound to.
+     * @return {GLTexture} The gl texture.
+     */
+    updateTexture(texture, location) {
+        // assume it good!
+        // texture = texture.baseTexture || texture;
+
+        const gl = this.gl;
+
+        const isRenderTexture = !!texture._glRenderTargets;
+
+        // if (!texture.hasLoaded) {
+        //     return null;
+        // }
+        if(!texture.complete&&!(texture instanceof HTMLCanvasElement)){
+            return null;
+        }
+
+        const boundTextures = this.renderer.boundTextures;
+
+        // if the location is undefined then this may have been called by n event.
+        // this being the case the texture may already be bound to a slot. As a texture can only be bound once
+        // we need to find its current location if it exists.
+        if (location === undefined) {
+            location = 0;
+
+            // TODO maybe we can use texture bound ids later on...
+            // check if texture is already bound..
+            for (let i = 0; i < boundTextures.length; ++i) {
+                if (boundTextures[i] === texture) {
+                    location = i;
+                    break;
+                }
+            }
+        }
+
+        boundTextures[location] = texture;
+
+        gl.activeTexture(gl.TEXTURE0 + location);
+
+        let glTexture = texture._glTextures[this.renderer.CONTEXT_UID];
+
+        if (!glTexture) {
+            // if (isRenderTexture) {
+            //     const renderTarget = new RenderTarget(
+            //         this.gl,
+            //         texture.width,
+            //         texture.height,
+            //         texture.scaleMode,
+            //         texture.resolution
+            //     );
+
+            //     renderTarget.resize(texture.width, texture.height);
+            //     texture._glRenderTargets[this.renderer.CONTEXT_UID] = renderTarget;
+            //     glTexture = renderTarget.texture;
+            // }
+            // else {
+                glTexture = new GLTexture(this.gl, null, null, null, null);
+                glTexture.bind(location);
+                glTexture.premultiplyAlpha = true;//必设，否则带透明度的纹理渲染会出问题
+                // glTexture.upload(texture.source);
+                glTexture.upload(texture);
+            // }
+
+            texture._glTextures[this.renderer.CONTEXT_UID] = glTexture;
+
+            // texture.on('update', this.updateTexture, this);
+            // texture.on('dispose', this.destroyTexture, this);
+
+            this._managedTextures.push(texture);
+
+            if (isPow2(texture.width)&&isPow2(texture.height)) {
+                // if (texture.mipmap) {
+                //     glTexture.enableMipmap();
+                // }
+
+                // if (texture.wrapMode === WRAP_MODES.CLAMP) {
+                //     glTexture.enableWrapClamp();
+                // }
+                // else if (texture.wrapMode === WRAP_MODES.REPEAT) {
+                //     glTexture.enableWrapRepeat();
+                // }
+                // else {
+                //     glTexture.enableWrapMirrorRepeat();
+                // }
+                glTexture.enableMipmap();
+                glTexture.enableWrapClamp();
+            }
+            else {
+                glTexture.enableWrapClamp();
+            }
+
+            // if (texture.scaleMode === SCALE_MODES.NEAREST) {
+            //     glTexture.enableNearestScaling();
+            // }
+            // else {
+                glTexture.enableLinearScaling();
+            // }
+        }
+        // the texture already exists so we only need to update it..
+        // else if (isRenderTexture) {
+        //     texture._glRenderTargets[this.renderer.CONTEXT_UID].resize(texture.width, texture.height);
+        // }
+        else {
+            glTexture.upload(texture);
+        }
+
+        return glTexture;
+    }
+
+    /**
+     * Deletes the texture from WebGL
+     *
+     * @param {PIXI.BaseTexture|PIXI.Texture} texture - the texture to destroy
+     * @param {boolean} [skipRemove=false] - Whether to skip removing the texture from the TextureManager.
+     */
+    destroyTexture(texture, skipRemove) {
+        texture = texture.baseTexture || texture;
+
+        if (!texture.hasLoaded) {
+            return;
+        }
+
+        const uid = this.renderer.CONTEXT_UID;
+        const glTextures = texture._glTextures;
+        const glRenderTargets = texture._glRenderTargets;
+
+        if (glTextures[uid]) {
+            this.renderer.unbindTexture(texture);
+
+            glTextures[uid].destroy();
+            // texture.off('update', this.updateTexture, this);
+            // texture.off('dispose', this.destroyTexture, this);
+
+            delete glTextures[uid];
+
+            if (!skipRemove) {
+                const i = this._managedTextures.indexOf(texture);
+
+                if (i !== -1) {
+                    removeItems(this._managedTextures, i, 1);
+                }
+            }
+        }
+
+        if (glRenderTargets && glRenderTargets[uid]) {
+            glRenderTargets[uid].destroy();
+            delete glRenderTargets[uid];
+        }
+    }
+
+    /**
+     * Deletes all the textures from WebGL
+     */
+    removeAll() {
+        // empty all the old gl textures as they are useless now
+        for (let i = 0; i < this._managedTextures.length; ++i) {
+            const texture = this._managedTextures[i];
+
+            if (texture._glTextures[this.renderer.CONTEXT_UID]) {
+                delete texture._glTextures[this.renderer.CONTEXT_UID];
+            }
+        }
+    }
+
+    /**
+     * Destroys this manager and removes all its textures
+     */
+    destroy() {
+        // destroy managed textures
+        for (let i = 0; i < this._managedTextures.length; ++i) {
+            const texture = this._managedTextures[i];
+
+            this.destroyTexture(texture, true);
+
+            // texture.off('update', this.updateTexture, this);
+            // texture.off('dispose', this.destroyTexture, this);
+        }
+
+        this._managedTextures = null;
+    }
+}

src/core/webgl/rendererPlugins/PrimitiveShader.ts

+import Shader from './Shader';
+
+/**
+ * This shader is used to draw simple primitive shapes for {@link Graphics}.
+ *
+ * @class
+ * @extends Shader
+ */
+export default class PrimitiveShader extends Shader {
+    /**
+     * 注释掉的aColor暂时不需要，不考虑混色，简单粗暴颜色和透明度
+     * @param {WebGLRenderingContext} gl - The webgl shader manager this shader works for.
+     */
+    constructor(gl) {
+        super(gl,
+            // vertex shader
+            [
+                'attribute vec2 aVertexPosition;',
+                // 'attribute vec4 aColor;',
+
+                'uniform mat3 translationMatrix;',
+                'uniform mat3 projectionMatrix;',
+
+                'uniform float alpha;',
+                'uniform vec3 tint;',
+
+                'varying vec4 vColor;',
+
+                'void main(void){',
+                '   gl_Position = vec4((projectionMatrix * translationMatrix * vec3(aVertexPosition, 1.0)).xy, 0.0, 1.0);',
+                // '   vColor = aColor * vec4(tint * alpha, alpha);',
+                'vColor = vec4(tint * alpha, alpha);',//考虑和vColor = vec4(tint,alpha)的区别
+                '}',
+            ].join('\n'),
+            // fragment shader
+            [
+                'varying vec4 vColor;',
+
+                'void main(void){',
+                '   gl_FragColor = vColor;',
+                // '   gl_FragColor = vec4(1.0,0.0,0.0,1.0);',
+                '}',
+            ].join('\n')
+        );
+    }
+}

src/core/webgl/utils/canUploadSameBuffer.ts

+
+export default function canUploadSameBuffer() {
+	// Uploading the same buffer multiple times in a single frame can cause perf issues.
+	// Apparent on IOS so only check for that at the moment
+	// this check may become more complex if this issue pops up elsewhere.
+	const ios = !!navigator.platform && (/iPad|iPhone|iPod/).test(navigator.platform);
+
+	return !ios;
+}

types/core/webgl/glCore/checkMaxIfStatmentsInShader.d.ts

+export declare function checkMaxIfStatmentsInShader(maxIfs: any, gl: any): any;

types/core/webgl/glCore/shader/mapType.d.ts

+export declare function mapType(gl: any, type: any): any;