feat: Vertex Array Objects (#20)

Author: iwoplaza

packages/byegl/src/attribute.ts

@@ -30,3 +30,10 @@ export class ByeGLVertexArrayObject {
     };
   }
 }
+
+export function destroyVAO(vao: ByeGLVertexArrayObject) {
+  const internal = vao[$internal];
+  internal.boundElementArrayBuffer = null;
+  internal.enabledVertexAttribArrays.clear();
+  internal.vertexBufferSegments = [];
+}

packages/byegl/src/byegl-context.ts

@@ -1,5 +1,9 @@
 import { TgpuRoot } from 'typegpu';
-import { AttributeState, ByeGLVertexArrayObject } from './attribute.ts';
+import {
+  AttributeState,
+  ByeGLVertexArrayObject,
+  destroyVAO,
+} from './attribute.ts';
 import { ByeGLBuffer, VertexBufferSegment } from './buffer.ts';
 import {
   blendEquationMap,
@@ -543,6 +547,10 @@ export class ByeGLContext {
     }
   }
 
+  deleteVertexArray(vao: ByeGLVertexArrayObject | null): void {
+    vao && destroyVAO(vao);
+  }
+
   depthFunc(func: GLenum): void {
     // TODO: Do something with this value
     this.#parameters.set(gl.DEPTH_FUNC, func);