change drawable interface

src/app.ts

@@ -35,8 +35,8 @@ export class CanvasApp{
         
         this.gl.clearColor(0,0,0,0);
         this.gl.clear(this.gl.COLOR_BUFFER_BIT);
-        this.renderer.draw(this.gl);
+        this.renderer.draw(this.gl,{});
-        this.trenderer.draw(this.gl);
+        this.trenderer.draw(this.gl,{});
         requestAnimationFrame(this.drawScene.bind(this));
     }
 };

src/drawable.ts

@@ -1,4 +1,6 @@
+export interface RenderState{
+}
 
 export interface Drawable{
-    draw(gl:WebGL2RenderingContext):void;
+    draw(gl:WebGL2RenderingContext, state : RenderState):void;
 };

src/drawer2D.ts

@@ -17,7 +17,7 @@ uniform vec4 u_color;
 void main() {
   outColor = u_color;
 }`;
-import { Drawable } from "./drawable";
+import { Drawable, RenderState } from "./drawable";
 import * as G from "./glWrapper";
 import { getUniformDefaultValue, UniformSet } from "./uniform";
 
@@ -82,7 +82,7 @@ export class Drawer2D implements Drawable{
     setUniform(u:UniformSet){
         this.uniforms = u;
     }
-    draw(gl:WebGL2RenderingContext){
+    draw(gl:WebGL2RenderingContext, state : RenderState){
         this.useProgram();
 
         this.program.setUniform4fv(gl,"u_color",[this.uniforms.redcolor,0.3,0.8,1.0]);

src/triangle_drawer.ts

@@ -1,4 +1,4 @@
-import { Drawable } from "./drawable";
+import { Drawable, RenderState } from "./drawable";
 import {createProgramFromSource, ProgramError, ShaderError} from "./gl_util";
 import { createIndexBuffer, createVertexArray, createVertexBuffer, GLProgram, IndexBuffer, VertexArray, VertexBuffer } from "./glWrapper";
 
@@ -55,7 +55,7 @@ export class TriangleDrawer implements Drawable{
         this.indexBuffer.bind(gl);
         this.vao.unbind(gl);
     }
-    draw(gl: WebGL2RenderingContext): void {
+    draw(gl: WebGL2RenderingContext, state :RenderState): void {
         this.program.use(gl);
         this.vao.bind(gl);