From 4bb8c65a460fde1c8723702c9c0af5d5d985b56b Mon Sep 17 00:00:00 2001
From: thinkinggis <lzx199065@gmail.com>
Date: Wed, 18 Dec 2019 21:13:56 +0800
Subject: [PATCH] =?UTF-8?q?feat(layer):=20add=20blend=20=E6=95=88=E6=9E=9C?=
 =?UTF-8?q?=E9=85=8D=E7=BD=AE=E6=94=AF=E6=8C=81=20normal,additive?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 docs/api/layer/layer.zh.md                    | 30 +++++++++
 .../core/src/services/config/ConfigService.ts |  1 +
 .../core/src/services/layer/ILayerService.ts  | 23 ++++++-
 .../core/src/services/layer/LayerService.ts   |  5 +-
 packages/core/src/services/log/LogService.ts  |  2 +-
 packages/core/src/services/renderer/IModel.ts | 41 ++++++++----
 packages/core/src/services/renderer/gl.ts     |  4 ++
 packages/layers/src/core/BaseLayer.ts         | 26 ++++----
 packages/layers/src/core/BaseModel.ts         |  9 ++-
 packages/layers/src/heatmap/index.ts          |  2 +-
 packages/layers/src/line/dash.ts              |  2 +-
 packages/layers/src/line/index.ts             |  2 +-
 packages/layers/src/point/index.ts            |  2 +-
 packages/layers/src/point/models/normal.ts    | 14 +---
 packages/layers/src/point/text.ts             |  2 +-
 packages/layers/src/polygon/index.ts          |  2 +-
 packages/layers/src/raster/image.ts           |  2 +-
 packages/layers/src/raster/raster.ts          |  2 +-
 packages/layers/src/raster/raster2d.ts        |  2 +-
 packages/layers/src/utils/blend.ts            | 54 +++++++++++++++
 packages/maps/src/mapbox/index.ts             |  6 +-
 packages/renderer/src/regl/constants.ts       |  2 +
 packages/renderer/src/regl/index.ts           |  1 +
 stories/Layers/Layers.stories.tsx             |  2 +
 stories/Layers/components/light.tsx           | 65 +++++++++++++++++++
 25 files changed, 248 insertions(+), 55 deletions(-)
 create mode 100644 packages/layers/src/utils/blend.ts
 create mode 100644 stories/Layers/components/light.tsx

diff --git a/docs/api/layer/layer.zh.md b/docs/api/layer/layer.zh.md
index bf4a3519bd..dd75034d6a 100644
--- a/docs/api/layer/layer.zh.md
+++ b/docs/api/layer/layer.zh.md
@@ -24,6 +24,10 @@ new Layer(option)
 
 ## 配置项
 
+### name
+
+设置图层名称,可根据 name 获取 layer;
+
 ### visable
 
 图层是否可见   {bool } default true
@@ -40,6 +44,15 @@ new Layer(option)
 
 图层显示最大缩放等级 （0-18）   {number}  default 18
 
+### blend
+
+图层元素混合效果
+
+- normal 正常效果 默认
+- additive 叠加模式
+- subtractive 相减模式
+- max 最大值
+
 # 方法
 
 ### source
@@ -284,6 +297,13 @@ scene.render();
 layer.setData(data);
 ```
 
+### setBlend(type)
+
+设置图层叠加方法
+参数：
+
+- type blend 类型
+
 ## 图层控制方法
 
 ### show
@@ -422,3 +442,13 @@ layer.on('unmousedown', (ev) => {}); // 图层外单击按下时触发
 layer.on('uncontextmenu', (ev) => {}); // 图层外点击右键
 layer.on('unpick', (ev) => {}); // 图层外的操作的所有事件
 ```
+
+## 图层事件
+
+### inited
+
+图层初始化完成后触发
+
+### remove
+
+图层移除时触发
diff --git a/packages/core/src/services/config/ConfigService.ts b/packages/core/src/services/config/ConfigService.ts
index cb1db914a9..4ff7d497ad 100644
--- a/packages/core/src/services/config/ConfigService.ts
+++ b/packages/core/src/services/config/ConfigService.ts
@@ -50,6 +50,7 @@ const defaultLayerConfig: Partial<ILayerConfig> = {
   visible: true,
   autoFit: false,
   zIndex: 0,
+  blend: 'normal',
   pickedFeatureID: -1,
   enableMultiPassRenderer: true,
   enablePicking: true,
diff --git a/packages/core/src/services/layer/ILayerService.ts b/packages/core/src/services/layer/ILayerService.ts
index 81b7339f36..b376a83104 100644
--- a/packages/core/src/services/layer/ILayerService.ts
+++ b/packages/core/src/services/layer/ILayerService.ts
@@ -3,7 +3,11 @@ import { SyncBailHook, SyncHook, SyncWaterfallHook } from 'tapable';
 import Clock from '../../utils/clock';
 import { ISceneConfig } from '../config/IConfigService';
 import { IMapService } from '../map/IMapService';
-import { IModel, IModelInitializationOptions } from '../renderer/IModel';
+import {
+  IBlendOptions,
+  IModel,
+  IModelInitializationOptions,
+} from '../renderer/IModel';
 import {
   IMultiPassRenderer,
   IPass,
@@ -22,6 +26,16 @@ import {
   StyleAttributeOption,
   Triangulation,
 } from './IStyleAttributeService';
+export enum BlendType {
+  normal = 'normal',
+  additive = 'additive',
+  subtractive = 'subtractive',
+  min = 'min',
+  max = 'max',
+}
+export interface IBlendTypes {
+  [key: string]: Partial<IBlendOptions>;
+}
 export interface IDataState {
   dataSourceNeedUpdate: boolean;
   dataMappingNeedUpdate: boolean;
@@ -38,6 +52,7 @@ export interface ILayerModelInitializationOptions {
 export interface ILayerModel {
   render(): void;
   getUninforms(): IModelUniform;
+  getBlend(): IBlendOptions;
   buildModels(): IModel[];
 }
 export interface IModelUniform {
@@ -57,7 +72,8 @@ export interface IActiveOption {
 
 export interface ILayer {
   id: string; // 一个场景中同一类型 Layer 可能存在多个
-  name: string; // 代表 Layer 的类型
+  type: string; // 代表 Layer 的类型
+  name: string; //
   inited: boolean; // 是否初始化完成
   zIndex: number;
   plugins: ILayerPlugin[];
@@ -120,6 +136,7 @@ export interface ILayer {
   isVisible(): boolean;
   setMaxZoom(min: number): ILayer;
   setMinZoom(max: number): ILayer;
+  setBlend(type: keyof typeof BlendType): void;
   // animate(field: string, option: any): ILayer;
   render(): ILayer;
   destroy(): void;
@@ -190,6 +207,8 @@ export interface ILayerConfig {
   visible: boolean;
   zIndex: number;
   autoFit: boolean;
+  name: string; //
+  blend: keyof typeof BlendType;
   pickedFeatureID: number;
   enableMultiPassRenderer: boolean;
   passes: Array<string | [string, { [key: string]: unknown }]>;
diff --git a/packages/core/src/services/layer/LayerService.ts b/packages/core/src/services/layer/LayerService.ts
index d2afaebf07..fa9125e758 100644
--- a/packages/core/src/services/layer/LayerService.ts
+++ b/packages/core/src/services/layer/LayerService.ts
@@ -38,8 +38,8 @@ export default class LayerService implements ILayerService {
     return this.layers;
   }
 
-  public getLayer(id: string): ILayer | undefined {
-    return this.layers.find((layer) => layer.id === id);
+  public getLayer(name: string): ILayer | undefined {
+    return this.layers.find((layer) => layer.name === name);
   }
 
   public remove(layer: ILayer): void {
@@ -47,6 +47,7 @@ export default class LayerService implements ILayerService {
     if (layerIndex > -1) {
       this.layers.splice(layerIndex, 1);
     }
+    layer.emit('remove', null);
     layer.destroy();
     this.renderLayers();
   }
diff --git a/packages/core/src/services/log/LogService.ts b/packages/core/src/services/log/LogService.ts
index 3deb2005ec..e648b11c28 100644
--- a/packages/core/src/services/log/LogService.ts
+++ b/packages/core/src/services/log/LogService.ts
@@ -4,7 +4,7 @@ import { ILogService } from './ILogService';
 
 const Logger = new Log({ id: 'L7' }).enable(true);
 // // 只输出 debug 级别以上的日志信息
-Logger.priority = 4;
+Logger.priority = 5;
 
 @injectable()
 export default class LogService implements ILogService {
diff --git a/packages/core/src/services/renderer/IModel.ts b/packages/core/src/services/renderer/IModel.ts
index 10eb40de0e..7606932486 100644
--- a/packages/core/src/services/renderer/IModel.ts
+++ b/packages/core/src/services/renderer/IModel.ts
@@ -3,6 +3,30 @@ import { IAttribute } from './IAttribute';
 import { IElements } from './IElements';
 import { IUniform } from './IUniform';
 
+export interface IBlendOptions {
+  // gl.enable(gl.BLEND)
+  enable: boolean;
+  // gl.blendFunc
+  func: BlendingFunctionSeparate;
+  // gl.blendEquation
+  equation: {
+    // TODO: EXT_blend_minmax
+    rgb:
+      | gl.FUNC_ADD
+      | gl.FUNC_SUBTRACT
+      | gl.FUNC_REVERSE_SUBTRACT
+      | gl.MIN_EXT
+      | gl.MAX_EXT;
+    alpha?:
+      | gl.FUNC_ADD
+      | gl.FUNC_SUBTRACT
+      | gl.FUNC_REVERSE_SUBTRACT
+      | gl.MIN_EXT
+      | gl.MAX_EXT;
+  };
+  // gl.blendColor
+  color: [number, number, number, number];
+}
 type stencilOp =
   | gl.ZERO
   | gl.KEEP
@@ -153,20 +177,7 @@ export interface IModelInitializationOptions {
   /**
    * blending
    */
-  blend?: Partial<{
-    // gl.enable(gl.BLEND)
-    enable: boolean;
-    // gl.blendFunc
-    func: BlendingFunctionSeparate;
-    // gl.blendEquation
-    equation: {
-      // TODO: EXT_blend_minmax
-      rgb: gl.FUNC_ADD | gl.FUNC_SUBTRACT | gl.FUNC_REVERSE_SUBTRACT;
-      alpha: gl.FUNC_ADD | gl.FUNC_SUBTRACT | gl.FUNC_REVERSE_SUBTRACT;
-    };
-    // gl.blendColor
-    color: [number, number, number, number];
-  }>;
+  blend?: Partial<IBlendOptions>;
 
   /**
    * stencil
@@ -221,6 +232,8 @@ export interface IModelDrawOptions {
     [key: string]: IAttribute;
   };
   elements?: IElements;
+
+  blend?: IBlendOptions;
 }
 
 /**
diff --git a/packages/core/src/services/renderer/gl.ts b/packages/core/src/services/renderer/gl.ts
index 37bdcd96b4..8238266d07 100644
--- a/packages/core/src/services/renderer/gl.ts
+++ b/packages/core/src/services/renderer/gl.ts
@@ -60,6 +60,10 @@ export enum gl {
   FUNC_SUBTRACT = 0x800a,
   FUNC_REVERSE_SUBTRACT = 0x800b,
 
+  /** Blend Min Max */
+  MAX_EXT = 0x8008,
+  MIN_EXT = 0x8007,
+
   /* Separate Blend Functions */
   BLEND_DST_RGB = 0x80c8,
   BLEND_SRC_RGB = 0x80c9,
diff --git a/packages/layers/src/core/BaseLayer.ts b/packages/layers/src/core/BaseLayer.ts
index 4a2f628691..3f752ad676 100644
--- a/packages/layers/src/core/BaseLayer.ts
+++ b/packages/layers/src/core/BaseLayer.ts
@@ -1,4 +1,5 @@
 import {
+  BlendType,
   gl,
   IActiveOption,
   IAnimateOption,
@@ -34,10 +35,9 @@ import {
   ScaleTypes,
   StyleAttributeField,
   StyleAttributeOption,
-  TYPES,
+   TYPES
 } from '@antv/l7-core';
 import Source from '@antv/l7-source';
-import { bindAll } from '@antv/l7-utils';
 import { EventEmitter } from 'eventemitter3';
 import { Container } from 'inversify';
 import { isFunction, isObject } from 'lodash';
@@ -45,6 +45,7 @@ import { isFunction, isObject } from 'lodash';
 import mergeJsonSchemas from 'merge-json-schemas';
 import { SyncBailHook, SyncHook, SyncWaterfallHook } from 'tapable';
 import { normalizePasses } from '../plugins/MultiPassRendererPlugin';
+import { BlendTypes } from '../utils/blend';
 import baseLayerSchema from './schema';
 /**
  * 分配 layer id
@@ -55,6 +56,7 @@ export default class BaseLayer<ChildLayerStyleOptions = {}> extends EventEmitter
   implements ILayer {
   public id: string = `${layerIdCounter++}`;
   public name: string;
+  public type: string;
   public visible: boolean = true;
   public zIndex: number = 0;
   public minZoom: number;
@@ -165,6 +167,7 @@ export default class BaseLayer<ChildLayerStyleOptions = {}> extends EventEmitter
 
   constructor(config: Partial<ILayerConfig & ChildLayerStyleOptions> = {}) {
     super();
+    this.name = config.name || this.id;
     this.rawConfig = config;
   }
 
@@ -299,6 +302,7 @@ export default class BaseLayer<ChildLayerStyleOptions = {}> extends EventEmitter
     this.buildModels();
     // 触发初始化完成事件;
     this.emit('inited');
+    this.emit('added');
     return this;
   }
 
@@ -514,10 +518,18 @@ export default class BaseLayer<ChildLayerStyleOptions = {}> extends EventEmitter
       this.interactionService.triggerSelect(id);
     }
   }
+  public setBlend(type: keyof typeof BlendType): void {
+    this.updateLayerConfig({
+      blend: type,
+    });
+    this.layerModelNeedUpdate = true;
+    this.render();
+  }
   public show(): ILayer {
     this.updateLayerConfig({
       visible: true,
     });
+
     return this;
   }
 
@@ -685,15 +697,7 @@ export default class BaseLayer<ChildLayerStyleOptions = {}> extends EventEmitter
       fs,
       vs,
       elements,
-      blend: {
-        enable: true,
-        func: {
-          srcRGB: gl.SRC_ALPHA,
-          srcAlpha: 1,
-          dstRGB: gl.ONE_MINUS_SRC_ALPHA,
-          dstAlpha: 1,
-        },
-      },
+      blend: BlendTypes[BlendType.normal],
       ...rest,
     });
   }
diff --git a/packages/layers/src/core/BaseModel.ts b/packages/layers/src/core/BaseModel.ts
index 994f208b42..f21ae3b67e 100644
--- a/packages/layers/src/core/BaseModel.ts
+++ b/packages/layers/src/core/BaseModel.ts
@@ -1,5 +1,7 @@
 import {
+  BlendType,
   IAttribute,
+  IBlendOptions,
   ICameraService,
   IElements,
   IFontService,
@@ -17,7 +19,7 @@ import {
   Triangulation,
   TYPES,
 } from '@antv/l7-core';
-
+import { BlendTypes } from '../utils/blend';
 export default class BaseModel implements ILayerModel {
   public triangulation: Triangulation;
 
@@ -54,7 +56,10 @@ export default class BaseModel implements ILayerModel {
       .get<ICameraService>(TYPES.ICameraService);
     this.registerBuiltinAttributes();
   }
-
+  public getBlend(): IBlendOptions {
+    const { blend = 'normal' } = this.layer.getLayerConfig();
+    return BlendTypes[BlendType[blend]] as IBlendOptions;
+  }
   public getUninforms(): IModelUniform {
     throw new Error('Method not implemented.');
   }
diff --git a/packages/layers/src/heatmap/index.ts b/packages/layers/src/heatmap/index.ts
index d350dda55d..f10463232b 100644
--- a/packages/layers/src/heatmap/index.ts
+++ b/packages/layers/src/heatmap/index.ts
@@ -5,7 +5,7 @@ interface IPointLayerStyleOptions {
   opacity: number;
 }
 export default class HeatMapLayer extends BaseLayer<IPointLayerStyleOptions> {
-  public name: string = 'HeatMapLayer';
+  public type: string = 'HeatMapLayer';
   protected getConfigSchema() {
     return {
       properties: {
diff --git a/packages/layers/src/line/dash.ts b/packages/layers/src/line/dash.ts
index 2154e03a9f..212e7ba0bd 100644
--- a/packages/layers/src/line/dash.ts
+++ b/packages/layers/src/line/dash.ts
@@ -10,7 +10,7 @@ interface IDashLineLayerStyleOptions {
 export default class DashLineLayer extends BaseLayer<
   IDashLineLayerStyleOptions
 > {
-  public name: string = 'LineLayer';
+  public type: string = 'LineLayer';
 
   protected getConfigSchema() {
     return {
diff --git a/packages/layers/src/line/index.ts b/packages/layers/src/line/index.ts
index f46c4270b5..5a6b613e71 100644
--- a/packages/layers/src/line/index.ts
+++ b/packages/layers/src/line/index.ts
@@ -4,7 +4,7 @@ interface IPointLayerStyleOptions {
   opacity: number;
 }
 export default class LineLayer extends BaseLayer<IPointLayerStyleOptions> {
-  public name: string = 'LineLayer';
+  public type: string = 'LineLayer';
 
   private animateStartTime: number = 0;
 
diff --git a/packages/layers/src/point/index.ts b/packages/layers/src/point/index.ts
index 300bc1bfb2..62fd5bdea3 100644
--- a/packages/layers/src/point/index.ts
+++ b/packages/layers/src/point/index.ts
@@ -7,7 +7,7 @@ interface IPointLayerStyleOptions {
   strokeColor: string;
 }
 export default class PointLayer extends BaseLayer<IPointLayerStyleOptions> {
-  public name: string = 'PointLayer';
+  public type: string = 'PointLayer';
   protected getConfigSchema() {
     return {
       properties: {
diff --git a/packages/layers/src/point/models/normal.ts b/packages/layers/src/point/models/normal.ts
index 987a3924ee..c0ea63c2e6 100644
--- a/packages/layers/src/point/models/normal.ts
+++ b/packages/layers/src/point/models/normal.ts
@@ -1,5 +1,6 @@
 import {
   AttributeType,
+  BlendType,
   gl,
   IEncodeFeature,
   IModel,
@@ -8,9 +9,9 @@ import {
 
 import { rgb2arr } from '@antv/l7-utils';
 import BaseModel from '../../core/BaseModel';
+import { BlendTypes } from '../../utils/blend';
 import normalFrag from '../shaders/normal_frag.glsl';
 import normalVert from '../shaders/normal_vert.glsl';
-
 interface IPointLayerStyleOptions {
   opacity: number;
   strokeWidth: number;
@@ -38,7 +39,6 @@ export default class NormalModel extends BaseModel {
       u_stroke_color: rgb2arr(strokeColor),
     };
   }
-
   public buildModels(): IModel[] {
     return [
       this.layer.buildLayerModel({
@@ -48,15 +48,7 @@ export default class NormalModel extends BaseModel {
         triangulation: PointTriangulation,
         depth: { enable: false },
         primitive: gl.POINTS,
-        blend: {
-          enable: true,
-          func: {
-            srcRGB: gl.ONE,
-            srcAlpha: 1,
-            dstRGB: gl.ONE,
-            dstAlpha: 1,
-          },
-        },
+        blend: this.getBlend(),
       }),
     ];
   }
diff --git a/packages/layers/src/point/text.ts b/packages/layers/src/point/text.ts
index 1e68a913e3..becc151b72 100644
--- a/packages/layers/src/point/text.ts
+++ b/packages/layers/src/point/text.ts
@@ -26,7 +26,7 @@ export function PointTriangulation(feature: IEncodeFeature) {
   };
 }
 export default class TextLayer extends BaseLayer<IPointTextLayerStyleOptions> {
-  public name: string = 'PointLayer';
+  public type: string = 'PointLayer';
 
   protected getConfigSchema() {
     return {
diff --git a/packages/layers/src/polygon/index.ts b/packages/layers/src/polygon/index.ts
index 9957cfbfde..9e0dbd380b 100644
--- a/packages/layers/src/polygon/index.ts
+++ b/packages/layers/src/polygon/index.ts
@@ -7,7 +7,7 @@ interface IPolygonLayerStyleOptions {
 }
 
 export default class PolygonLayer extends BaseLayer<IPolygonLayerStyleOptions> {
-  public name: string = 'PolygonLayer';
+  public type: string = 'PolygonLayer';
 
   protected getConfigSchema() {
     return {
diff --git a/packages/layers/src/raster/image.ts b/packages/layers/src/raster/image.ts
index 3c5ac1b8af..ad48fcf4c9 100644
--- a/packages/layers/src/raster/image.ts
+++ b/packages/layers/src/raster/image.ts
@@ -14,7 +14,7 @@ interface IPointLayerStyleOptions {
 }
 
 export default class ImageLayer extends BaseLayer<IPointLayerStyleOptions> {
-  public name: string = 'ImageLayer';
+  public type: string = 'ImageLayer';
   protected texture: ITexture2D;
 
   protected getConfigSchema() {
diff --git a/packages/layers/src/raster/raster.ts b/packages/layers/src/raster/raster.ts
index b8035e2ab6..1aaea3c4bd 100644
--- a/packages/layers/src/raster/raster.ts
+++ b/packages/layers/src/raster/raster.ts
@@ -26,7 +26,7 @@ interface IRasterLayerStyleOptions {
 }
 
 export default class RasterLayer extends BaseLayer<IRasterLayerStyleOptions> {
-  public name: string = 'e';
+  public type: string = 'RasterLayer';
   protected texture: ITexture2D;
   protected colorTexture: ITexture2D;
 
diff --git a/packages/layers/src/raster/raster2d.ts b/packages/layers/src/raster/raster2d.ts
index f82581ffbb..17ca71129b 100644
--- a/packages/layers/src/raster/raster2d.ts
+++ b/packages/layers/src/raster/raster2d.ts
@@ -12,7 +12,7 @@ interface IRasterLayerStyleOptions {
 }
 
 export default class Raster2dLayer extends BaseLayer<IRasterLayerStyleOptions> {
-  public name: string = 'RasterLayer';
+  public type: string = 'RasterLayer';
   protected texture: ITexture2D;
   protected colorTexture: ITexture2D;
 
diff --git a/packages/layers/src/utils/blend.ts b/packages/layers/src/utils/blend.ts
new file mode 100644
index 0000000000..e209a58b8d
--- /dev/null
+++ b/packages/layers/src/utils/blend.ts
@@ -0,0 +1,54 @@
+import { BlendType, gl, IBlendOptions, IBlendTypes } from '@antv/l7-core';
+export const BlendTypes: IBlendTypes = {
+  [BlendType.additive]: {
+    enable: true,
+    func: {
+      srcRGB: gl.ONE,
+      dstRGB: gl.ONE,
+      srcAlpha: 1,
+      dstAlpha: 1,
+    },
+  },
+  [BlendType.normal]: {
+    enable: true,
+    func: {
+      srcRGB: gl.SRC_ALPHA,
+      dstRGB: gl.ONE_MINUS_SRC_ALPHA,
+      srcAlpha: 1,
+      dstAlpha: 1,
+    },
+  },
+  [BlendType.subtractive]: {
+    enable: true,
+    func: {
+      srcRGB: gl.ONE,
+      dstRGB: gl.ONE,
+      srcAlpha: gl.ZERO,
+      dstAlpha: gl.ONE_MINUS_SRC_COLOR,
+    },
+    equation: {
+      rgb: gl.FUNC_SUBTRACT,
+      alpha: gl.FUNC_SUBTRACT,
+    },
+  },
+  [BlendType.max]: {
+    enable: true,
+    func: {
+      srcRGB: gl.ONE,
+      dstRGB: gl.ONE,
+    },
+    equation: {
+      rgb: gl.MAX_EXT,
+    },
+  },
+  [BlendType.min]: {
+    enable: true,
+    func: {
+      srcRGB: gl.ONE,
+      dstRGB: gl.ONE,
+    },
+    equation: {
+      rgb: gl.MIN_EXT,
+    },
+  },
+};
diff --git a/packages/maps/src/mapbox/index.ts b/packages/maps/src/mapbox/index.ts
index 32377cea34..95786ec2f7 100644
--- a/packages/maps/src/mapbox/index.ts
+++ b/packages/maps/src/mapbox/index.ts
@@ -204,7 +204,7 @@ export default class MapboxService
      */
 
     // 判断全局 mapboxgl 对象的加载
-    if (!('mapInstance' in this.config) && !mapboxgl) {
+    if (!mapInstance && !mapboxgl) {
       // 用户有时传递进来的实例是继承于 mapbox 实例化的，不一定是 mapboxgl 对象。
       this.logger.error(this.configService.getSceneWarninfo('SDK'));
     }
@@ -213,13 +213,13 @@ export default class MapboxService
       token === MAPBOX_API_KEY &&
       style !== 'blank' &&
       !mapboxgl.accessToken &&
-      !('mapInstance' in this.config) // 如果用户传递了 mapInstance，应该不去干预实例的 accessToken。
+      !mapInstance // 如果用户传递了 mapInstance，应该不去干预实例的 accessToken。
     ) {
       this.logger.warn(this.configService.getSceneWarninfo('MapToken'));
     }
 
     // 判断是否设置了 accessToken
-    if ('mapInstance' in this.config && !mapboxgl.accessToken) {
+    if (!mapInstance && !mapboxgl.accessToken) {
       // 用户有时传递进来的实例是继承于 mapbox 实例化的，不一定是 mapboxgl 对象。
       mapboxgl.accessToken = token;
     }
diff --git a/packages/renderer/src/regl/constants.ts b/packages/renderer/src/regl/constants.ts
index f5696cc22d..a79d3a1a54 100644
--- a/packages/renderer/src/regl/constants.ts
+++ b/packages/renderer/src/regl/constants.ts
@@ -141,6 +141,8 @@ export const blendEquationMap: {
   [key: string]: regl.BlendingEquation;
 } = {
   [gl.FUNC_ADD]: 'add',
+  [gl.MIN_EXT]: 'min',
+  [gl.MAX_EXT]: 'max',
   [gl.FUNC_SUBTRACT]: 'subtract',
   [gl.FUNC_REVERSE_SUBTRACT]: 'reverse subtract',
 };
diff --git a/packages/renderer/src/regl/index.ts b/packages/renderer/src/regl/index.ts
index 50697320f6..7b3f0bb968 100644
--- a/packages/renderer/src/regl/index.ts
+++ b/packages/renderer/src/regl/index.ts
@@ -53,6 +53,7 @@ export default class ReglRendererService implements IRendererService {
         extensions: [
           'OES_element_index_uint',
           // 'EXT_shader_texture_lod', // IBL 兼容性问题
+          'EXT_blend_minmax',
           'OES_standard_derivatives', // wireframe
           // 'OES_texture_float', // shadow map 兼容性问题
           'WEBGL_depth_texture',
diff --git a/stories/Layers/Layers.stories.tsx b/stories/Layers/Layers.stories.tsx
index 3800e9eae3..7def7130ca 100644
--- a/stories/Layers/Layers.stories.tsx
+++ b/stories/Layers/Layers.stories.tsx
@@ -5,6 +5,7 @@ import ArcLineDemo from './components/Arcline';
 import Column from './components/column';
 import DataUpdate from './components/data_update';
 import HeatMapDemo from './components/HeatMap';
+import LightDemo from './components/light';
 import LineLayer from './components/Line';
 import PointDemo from './components/Point';
 import Point3D from './components/Point3D';
@@ -17,6 +18,7 @@ import RasterLayerDemo from './components/RasterLayer';
 storiesOf('图层', module)
   .add('点图层', () => <PointDemo />)
   .add('数据更新', () => <DataUpdate />)
+  .add('亮度图', () => <LightDemo />)
   .add('3D点', () => <Point3D />)
   .add('Column', () => <Column />)
   .add('图片标注', () => <PointImage />)
diff --git a/stories/Layers/components/light.tsx b/stories/Layers/components/light.tsx
new file mode 100644
index 0000000000..be9087972d
--- /dev/null
+++ b/stories/Layers/components/light.tsx
@@ -0,0 +1,65 @@
+import { PointLayer, Scene } from '@antv/l7';
+import { GaodeMap, Mapbox } from '@antv/l7-maps';
+import * as React from 'react';
+// @ts-ignore
+export default class Light extends React.Component {
+  // @ts-ignore
+  private scene: Scene;
+
+  public componentWillUnmount() {
+    this.scene.destroy();
+  }
+
+  public async componentDidMount() {
+    const response = await fetch(
+      'https://alipay-rmsdeploy-image.cn-hangzhou.alipay.aliyun-inc.com/antvdemo/assets/city/bj.csv',
+    );
+    const pointsData = await response.text();
+
+    const scene = new Scene({
+      id: 'map',
+      map: new Mapbox({
+        pitch: 0,
+        style: 'dark',
+        center: [116.405289, 39.904987],
+        zoom: 6,
+      }),
+    });
+    this.scene = scene;
+    scene.on('loaded', async () => {
+      const pointLayer = new PointLayer({
+        blend: 'min',
+      })
+        .source(pointsData, {
+          parser: {
+            type: 'csv',
+            x: 'lng',
+            y: 'lat',
+          },
+        })
+        .size(2)
+        .color("#FFFECC")
+        .style({
+          opacity: 1,
+        });
+
+      scene.addLayer(pointLayer);
+      this.scene = scene;
+    });
+  }
+
+  public render() {
+    return (
+      <div
+        id="map"
+        style={{
+          position: 'absolute',
+          top: 0,
+          left: 0,
+          right: 0,
+          bottom: 0,
+        }}
+      />
+    );
+  }
+}