Rebuild core around render graph AST and shared memory

Amp-Thread-ID: https://ampcode.com/threads/T-01a01380-b478-77d0-84a0-102880a5c5ae
Co-authored-by: Heaust Azure <heaust.azure@gmail.com>

examples/cookbook/06-custom-render-pipeline.js

@@ -0,0 +1,31 @@
+import { RenderGraph } from "@yawn/render-graph-js";
+
+export const simpleSceneShader = /* wgsl */ `
+@group(1) @binding(0) var<uniform> view_projection: mat4x4<f32>;
+struct Input {
+  @location(0) position: vec3<f32>,
+  @location(3) model_0: vec4<f32>,
+  @location(4) model_1: vec4<f32>,
+  @location(5) model_2: vec4<f32>,
+  @location(6) model_3: vec4<f32>,
+}
+@vertex fn vertex_main(input: Input) -> @builtin(position) vec4<f32> {
+  let model = mat4x4<f32>(input.model_0, input.model_1, input.model_2, input.model_3);
+  return view_projection * model * vec4(input.position, 1.0);
+}
+@fragment fn fragment_main() -> @location(0) vec4<f32> {
+  return vec4(0.2, 0.7, 1.0, 1.0);
+}`;
+
+/** Supply scene WGSL and entry points as graph data, never as core source. */
+export function customRenderPipelineExample() {
+  return new RenderGraph("custom_render_program", 1)
+    .renderPipeline({
+      name: "ground_plane",
+      shader: simpleSceneShader,
+      vertexEntry: "vertex_main",
+      fragmentEntry: "fragment_main",
+      doubleSided: false,
+    })
+    .ast();
+}