diff --git a/.eslintrc.yaml b/.eslintrc.yaml
index 343d6ea0f86..e243ab1f049 100644
--- a/.eslintrc.yaml
+++ b/.eslintrc.yaml
@@ -129,14 +129,7 @@ rules:
     '@typescript-eslint/unbound-method': off # we exploit prototype methods sometimes to acheive better performace
     '@typescript-eslint/no-explicit-any': off # still relevant for some heavily templated usages
 
-    '@typescript-eslint/no-empty-function': [error, {
-      allow: [
-        private-constructors,
-        protected-constructors,
-        decoratedFunctions,
-        overrideMethods,
-      ]
-    }]
+    '@typescript-eslint/no-empty-function': off # may become useful in some parent classes
 
     '@typescript-eslint/no-unused-vars': off # may become useful in some parent classes
     '@typescript-eslint/no-non-null-assertion': off # sometimes we just know better than the compiler
diff --git a/cocos/gfx/base/descriptor-set.ts b/cocos/gfx/base/descriptor-set.ts
index b29c0f4073e..3896f7bb8f6 100644
--- a/cocos/gfx/base/descriptor-set.ts
+++ b/cocos/gfx/base/descriptor-set.ts
@@ -26,7 +26,7 @@ import { Buffer } from './buffer';
 import { DescriptorSetLayout } from './descriptor-set-layout';
 import { Sampler } from './states/sampler';
 import { Texture } from './texture';
-import { GFXObject, ObjectType, DescriptorSetInfo, DESCRIPTOR_BUFFER_TYPE, DESCRIPTOR_SAMPLER_TYPE, AccessFlags } from './define';
+import { GFXObject, ObjectType, DescriptorSetInfo, DESCRIPTOR_BUFFER_TYPE, DESCRIPTOR_SAMPLER_TYPE, AccessFlags, AccessFlagBit } from './define';
 
 /**
  * @en GFX descriptor sets.
@@ -96,7 +96,7 @@ export abstract class DescriptorSet extends GFXObject {
      * @param binding The target binding.
      * @param texture The texture to be bound.
      */
-    public bindTexture (binding: number, texture: Texture, index = 0, flags?: AccessFlags): void {
+    public bindTexture (binding: number, texture: Texture, index = 0, flags = AccessFlagBit.NONE): void {
         const bindingIndex = this._layout!.bindingIndices[binding];
         const info = this._layout!.bindings[bindingIndex]; if (!info) { return; }
         if (info.descriptorType & DESCRIPTOR_SAMPLER_TYPE) {
diff --git a/cocos/gfx/base/pipeline-state.ts b/cocos/gfx/base/pipeline-state.ts
index e7e01c375c9..a7f5848b05a 100644
--- a/cocos/gfx/base/pipeline-state.ts
+++ b/cocos/gfx/base/pipeline-state.ts
@@ -26,21 +26,12 @@ import { PipelineLayout } from './pipeline-layout';
 import { RenderPass } from './render-pass';
 import { Shader } from './shader';
 import {
-    BlendFactor,
-    BlendOp,
-    ColorMask,
-    ComparisonFunc,
-    CullMode,
     DynamicStateFlagBit,
     DynamicStateFlags,
     GFXObject,
     ObjectType,
-    PolygonMode,
     PrimitiveMode,
-    ShadeModel,
-    StencilOp,
     InputState,
-    Color,
     PipelineBindPoint,
 } from './define';
 import { BlendState, BlendTarget, RasterizerState, DepthStencilState } from './pipeline-sub-state';
diff --git a/cocos/gfx/base/states/sampler.ts b/cocos/gfx/base/states/sampler.ts
index 7dee689f6ed..887339117a0 100644
--- a/cocos/gfx/base/states/sampler.ts
+++ b/cocos/gfx/base/states/sampler.ts
@@ -43,13 +43,13 @@ export class Sampler extends GFXObject {
 
     static computeHash (info: Readonly<SamplerInfo>): Filter {
         let hash = info.minFilter;
-        hash |= (info.magFilter << 2);
-        hash |= (info.mipFilter << 4);
-        hash |= (info.addressU << 6);
-        hash |= (info.addressV << 8);
-        hash |= (info.addressW << 10);
+        hash |= ((info.magFilter as number) << 2);
+        hash |= ((info.mipFilter as number) << 4);
+        hash |= ((info.addressU as number) << 6);
+        hash |= ((info.addressV as number) << 8);
+        hash |= ((info.addressW as number) << 10);
         hash |= (info.maxAnisotropy << 12);
-        hash |= (info.cmpFunc << 16);
+        hash |= ((info.cmpFunc as number) << 16);
         return hash;
     }
 
diff --git a/cocos/gfx/empty/empty-command-buffer.ts b/cocos/gfx/empty/empty-command-buffer.ts
index b3de2aadc95..4355538a03b 100644
--- a/cocos/gfx/empty/empty-command-buffer.ts
+++ b/cocos/gfx/empty/empty-command-buffer.ts
@@ -43,10 +43,16 @@ export class EmptyCommandBuffer extends CommandBuffer {
         this._queue = info.queue;
     }
     public destroy (): void {}
-    public begin (renderPass?: RenderPass, subpass = 0, frameBuffer?: Framebuffer): void {}
+    public begin (renderPass?: RenderPass, subpass?: number, frameBuffer?: Framebuffer): void {}
     public end (): void {}
-    public beginRenderPass (renderPass: RenderPass, framebuffer: Framebuffer, renderArea: Readonly<Rect>,
-        clearColors: Readonly<Color[]>, clearDepth: number, clearStencil: number): void {}
+    public beginRenderPass (
+        renderPass: RenderPass,
+        framebuffer: Framebuffer,
+        renderArea: Readonly<Rect>,
+        clearColors: Readonly<Color[]>,
+        clearDepth: number,
+        clearStencil: number,
+    ): void {}
     public endRenderPass (): void {}
     public bindPipelineState (pipelineState: PipelineState): void {}
     public bindDescriptorSet (set: number, descriptorSet: DescriptorSet, dynamicOffsets?: Readonly<number[]>): void {}
@@ -63,9 +69,12 @@ export class EmptyCommandBuffer extends CommandBuffer {
     public updateBuffer (buffer: Buffer, data: Readonly<BufferSource>, size?: number): void {}
     public copyBuffersToTexture (buffers: Readonly<ArrayBufferView[]>, texture: Texture, regions: Readonly<BufferTextureCopy[]>): void {}
     public execute (cmdBuffs: Readonly<CommandBuffer[]>, count: number): void {}
-    public pipelineBarrier (GeneralBarrier: Readonly<GeneralBarrier>, bufferBarriers?: Readonly<BufferBarrier[]>,
+    public pipelineBarrier (
+        GeneralBarrier: Readonly<GeneralBarrier>,
+        bufferBarriers?: Readonly<BufferBarrier[]>,
         buffers?: Readonly<Buffer[]>,
         textureBarriers?: Readonly<TextureBarrier[]>,
-        textures?: Readonly<Texture[]>): void {}
+        textures?: Readonly<Texture[]>,
+    ): void {}
     public blitTexture (srcTexture: Readonly<Texture>, dstTexture: Texture, regions: Readonly<TextureBlit []>, filter: Filter): void {}
 }
diff --git a/cocos/gfx/webgl/webgl-buffer.ts b/cocos/gfx/webgl/webgl-buffer.ts
index 9f6c308dc61..66101b608d1 100644
--- a/cocos/gfx/webgl/webgl-buffer.ts
+++ b/cocos/gfx/webgl/webgl-buffer.ts
@@ -33,6 +33,7 @@ import {
 } from './webgl-commands';
 import { IWebGLGPUBuffer, IWebGLGPUBufferView, WebGLIndirectDrawInfos } from './webgl-gpu-objects';
 import { WebGLDeviceManager } from './webgl-define';
+import { warn } from '../../core';
 
 export class WebGLBuffer extends Buffer {
     get gpuBuffer (): IWebGLGPUBuffer {
@@ -112,7 +113,7 @@ export class WebGLBuffer extends Buffer {
 
     public resize (size: number): void {
         if (this._isBufferView) {
-            console.warn('cannot resize buffer views!');
+            warn('cannot resize buffer views!');
             return;
         }
 
@@ -142,7 +143,7 @@ export class WebGLBuffer extends Buffer {
 
     public update (buffer: Readonly<BufferSource>, size?: number): void {
         if (this._isBufferView) {
-            console.warn('cannot update through buffer views!');
+            warn('cannot update through buffer views!');
             return;
         }
 
diff --git a/cocos/gfx/webgl/webgl-command-buffer.ts b/cocos/gfx/webgl/webgl-command-buffer.ts
index c41205649d3..cbeed1907fc 100644
--- a/cocos/gfx/webgl/webgl-command-buffer.ts
+++ b/cocos/gfx/webgl/webgl-command-buffer.ts
@@ -47,6 +47,7 @@ import { GeneralBarrier } from '../base/states/general-barrier';
 import { TextureBarrier } from '../base/states/texture-barrier';
 import { BufferBarrier } from '../base/states/buffer-barrier';
 import { WebGLDeviceManager } from './webgl-define';
+import { error } from '../../core';
 
 export class WebGLCommandBuffer extends CommandBuffer {
     public cmdPackage: WebGLCmdPackage = new WebGLCmdPackage();
@@ -74,7 +75,7 @@ export class WebGLCommandBuffer extends CommandBuffer {
         this._cmdAllocator.clearCmds(this.cmdPackage);
     }
 
-    public begin (renderPass?: RenderPass, subpass = 0, frameBuffer?: Framebuffer): void {
+    public begin (renderPass?: RenderPass, subpass?: number, frameBuffer?: Framebuffer): void {
         this._cmdAllocator.clearCmds(this.cmdPackage);
         this._curGPUPipelineState = null;
         this._curGPUInputAssembler = null;
@@ -295,7 +296,7 @@ export class WebGLCommandBuffer extends CommandBuffer {
                 }
             }
         } else {
-            console.error('Command \'draw\' must be recorded inside a render pass.');
+            error('Command \'draw\' must be recorded inside a render pass.');
         }
     }
 
@@ -331,7 +332,7 @@ export class WebGLCommandBuffer extends CommandBuffer {
                 this.cmdPackage.cmds.push(WebGLCmd.UPDATE_BUFFER);
             }
         } else {
-            console.error('Command \'updateBuffer\' must be recorded outside a render pass.');
+            error('Command \'updateBuffer\' must be recorded outside a render pass.');
         }
     }
 
@@ -353,7 +354,7 @@ export class WebGLCommandBuffer extends CommandBuffer {
                 }
             }
         } else {
-            console.error('Command \'copyBufferToTexture\' must be recorded outside a render pass.');
+            error('Command \'copyBufferToTexture\' must be recorded outside a render pass.');
         }
     }
 
diff --git a/cocos/gfx/webgl/webgl-commands.ts b/cocos/gfx/webgl/webgl-commands.ts
index 22844ba116d..e428927c9f8 100644
--- a/cocos/gfx/webgl/webgl-commands.ts
+++ b/cocos/gfx/webgl/webgl-commands.ts
@@ -501,9 +501,7 @@ export class WebGLCmdDraw extends WebGLCmdObject {
         super(WebGLCmd.DRAW);
     }
 
-    public clear (): void {
-        //
-    }
+    public clear (): void {}
 }
 
 export class WebGLCmdUpdateBuffer extends WebGLCmdObject {
diff --git a/cocos/gfx/webgl/webgl-gpu-objects.ts b/cocos/gfx/webgl/webgl-gpu-objects.ts
index 8abff6d139d..79058b028a1 100644
--- a/cocos/gfx/webgl/webgl-gpu-objects.ts
+++ b/cocos/gfx/webgl/webgl-gpu-objects.ts
@@ -341,12 +341,16 @@ export class IWebGLBlitManager {
         this._gpuShader = {
             name: 'Blit Pass',
             blocks: [
-                new UniformBlock(0, 0, `BlitParams`,
+                new UniformBlock(
+                    0,
+                    0,
+                    `BlitParams`,
                     [
                         new Uniform(`tilingOffsetSrc`, Type.FLOAT4, 1),
                         new Uniform(`tilingOffsetDst`, Type.FLOAT4, 1),
                     ],
-                    1),
+                    1,
+                ),
             ],
             samplerTextures: [new UniformSamplerTexture(0, samplerOffset, 'textureSrc', Type.SAMPLER2D, 1)],
             subpassInputs: [],
@@ -538,7 +542,7 @@ export class IWebGLBlitManager {
         descriptor.gpuSampler = filter === Filter.POINT ? this._gpuPointSampler : this._gpuLinearSampler;
 
         const formatInfo = FormatInfos[gpuTextureDst.format];
-        let attachment = gl.COLOR_ATTACHMENT0;
+        let attachment: number = gl.COLOR_ATTACHMENT0;
         if (formatInfo.hasStencil) {
             attachment = gl.DEPTH_STENCIL_ATTACHMENT;
         } else if (formatInfo.hasDepth) {
@@ -582,8 +586,13 @@ export class IWebGLBlitManager {
             this._uniformBuffer[6] = region.dstOffset.x / dstWidth;
             this._uniformBuffer[7] = region.dstOffset.y / dstHeight;
 
-            WebGLCmdFuncUpdateBuffer(device, this._gpuUniformBuffer, this._uniformBuffer, 0,
-                this._uniformBuffer.length * Float32Array.BYTES_PER_ELEMENT);
+            WebGLCmdFuncUpdateBuffer(
+                device,
+                this._gpuUniformBuffer,
+                this._uniformBuffer,
+                0,
+                this._uniformBuffer.length * Float32Array.BYTES_PER_ELEMENT,
+            );
             WebGLCmdFuncBindStates(device, this._gpuPipelineState, this._gpuInputAssembler, [this._gpuDescriptorSet], [], null!);
             WebGLCmdFuncDraw(device, this._drawInfo);
         }
diff --git a/cocos/gfx/webgl2/webgl2-buffer.ts b/cocos/gfx/webgl2/webgl2-buffer.ts
index a9f868dd156..c600d7f3380 100644
--- a/cocos/gfx/webgl2/webgl2-buffer.ts
+++ b/cocos/gfx/webgl2/webgl2-buffer.ts
@@ -22,6 +22,7 @@
  THE SOFTWARE.
 */
 
+import { warn } from '../../core';
 import { Buffer } from '../base/buffer';
 import { BufferUsageBit, BufferSource, BufferInfo, BufferViewInfo } from '../base/define';
 import {
@@ -101,7 +102,7 @@ export class WebGL2Buffer extends Buffer {
 
     public resize (size: number): void {
         if (this._isBufferView) {
-            console.warn('cannot resize buffer views!');
+            warn('cannot resize buffer views!');
             return;
         }
 
@@ -123,7 +124,7 @@ export class WebGL2Buffer extends Buffer {
 
     public update (buffer: Readonly<BufferSource>, size?: number): void {
         if (this._isBufferView) {
-            console.warn('cannot update through buffer views!');
+            warn('cannot update through buffer views!');
             return;
         }
 
diff --git a/cocos/gfx/webgl2/webgl2-command-buffer.ts b/cocos/gfx/webgl2/webgl2-command-buffer.ts
index 84a3f6bdd00..8f117fc8ca5 100644
--- a/cocos/gfx/webgl2/webgl2-command-buffer.ts
+++ b/cocos/gfx/webgl2/webgl2-command-buffer.ts
@@ -60,6 +60,7 @@ import { GeneralBarrier } from '../base/states/general-barrier';
 import { TextureBarrier } from '../base/states/texture-barrier';
 import { BufferBarrier } from '../base/states/buffer-barrier';
 import { WebGL2DeviceManager } from './webgl2-define';
+import { error } from '../../core';
 
 export class WebGL2CommandBuffer extends CommandBuffer {
     public cmdPackage: WebGL2CmdPackage = new WebGL2CmdPackage();
@@ -87,7 +88,7 @@ export class WebGL2CommandBuffer extends CommandBuffer {
         this._cmdAllocator.clearCmds(this.cmdPackage);
     }
 
-    public begin (renderPass?: RenderPass, subpass = 0, frameBuffer?: Framebuffer): void {
+    public begin (renderPass?: RenderPass, subpass?: number, frameBuffer?: Framebuffer): void {
         this._cmdAllocator.clearCmds(this.cmdPackage);
         this._curGPUPipelineState = null;
         this._curGPUInputAssembler = null;
@@ -307,7 +308,7 @@ export class WebGL2CommandBuffer extends CommandBuffer {
                 }
             }
         } else {
-            console.error('Command \'draw\' must be recorded inside a render pass.');
+            error('Command \'draw\' must be recorded inside a render pass.');
         }
     }
 
@@ -342,7 +343,7 @@ export class WebGL2CommandBuffer extends CommandBuffer {
                 this.cmdPackage.cmds.push(WebGL2Cmd.UPDATE_BUFFER);
             }
         } else {
-            console.error('Command \'updateBuffer\' must be recorded outside a render pass.');
+            error('Command \'updateBuffer\' must be recorded outside a render pass.');
         }
     }
 
@@ -362,7 +363,7 @@ export class WebGL2CommandBuffer extends CommandBuffer {
                 this.cmdPackage.cmds.push(WebGL2Cmd.COPY_BUFFER_TO_TEXTURE);
             }
         } else {
-            console.error('Command \'copyBufferToTexture\' must be recorded outside a render pass.');
+            error('Command \'copyBufferToTexture\' must be recorded outside a render pass.');
         }
     }