/**
 * scene-render — Inc 2 (D.083, task 2h3s): render a HoloScript VM scene to native pixels.
 *
 * Takes the pure-data DrawSpec[] (from extractDrawSpecs over the engine VM ECSWorld) and
 * draws each entity natively on a WebGPU device: primitiveToMesh geometry → GPU vertex/index
 * buffers, per-entity {MVP, color} uniform, indexed draw to an offscreen texture. Verified
 * through the gpu-verify readback path — a real pixel, no Three.js.
 *
 * SCOPE: headless render-to-texture (the part this environment + CI-with-Dawn can verify).
 * It deliberately does NOT go through WebGPURenderer's canvas/IDrawCall pipeline-registry
 * machinery (which is browser-canvas-bound per the pre-mortem) — that browser path is a later,
 * /journalist-screenshot-gated step before any default-flip. This proves VM-scene → native pixel.
 */
import type { DrawSpec } from './draw-spec';
import { type PixelGrid } from './gpu-verify';
/** Symmetric orthographic projection, half-extent `e`. Centers world origin in the viewport. */
export declare function orthographic(e?: number): Float32Array;
export interface SceneRenderOptions {
    size?: number;
    viewProj?: Float32Array;
    clear?: [number, number, number, number];
}
/**
 * Render the given draw specs to an offscreen rgba8unorm texture and read the pixels back.
 * One render pass; one vertex/index/uniform buffer + bind group per spec (fine for the small
 * scenes this verifies). `mesh`-kind specs that carry `geometry.meshData` (Track-0 imported
 * real vertex buffers) are rendered using those buffers directly. `mesh`-kind specs WITHOUT
 * meshData (legacy external-reference pointer) are still skipped as before.
 */
export declare function renderDrawSpecs(device: GPUDevice, specs: DrawSpec[], opts?: SceneRenderOptions): Promise<PixelGrid>;
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