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TypeScript
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126import { describe, it, expect } from "vitest"import { Effect } from "effect"import { createRenderRequest } from "./render"import { createLayer, makeRegistry } from "./layers"import { nextLayerId } from "./layers"import type { Layer } from "./layers"import { renderExposure, renderContrast, renderShadows, renderHighlights, renderWhiteBalance, renderSaturation, renderGrain, renderVignette, renderChromaticAberration, renderClarity, renderLut,} from "./shaders"import type { LutCube } from "./luts/cube"import { LutId } from "./brands"
// ---- helpers ----
const registry = makeRegistry({ exposure: renderExposure, contrast: renderContrast, shadows: renderShadows, highlights: renderHighlights, whiteBalance: renderWhiteBalance, saturation: renderSaturation, grain: renderGrain, vignette: renderVignette, chromaticAberration: renderChromaticAberration, clarity: renderClarity, lut: renderLut,})
// createRenderRequest never touches the bitmap (the GPU backend does); the// test env has no ImageBitmap constructor, so a structural stand-in is fine.class FakeBitmap implements ImageBitmap { readonly width = 0 readonly height = 0 close(): void {}}
const fakeBitmap = (): ImageBitmap => new FakeBitmap()
const cube2: LutCube = { size: 2, data: new Float32Array(8 * 3) }
const lutsWith = (lutId: LutId, cube: LutCube): ReadonlyMap<LutId, LutCube> => { const luts = new Map<LutId, LutCube>() luts.set(lutId, cube) return luts}
// Contextually typed by the return annotation — no assertion needed.const lutLayer = (lutId: LutId): Layer => ({ id: nextLayerId(), visible: true, type: "lut", lutId, amount: 1,})
const VELVIA = LutId("luts/colorslide/fuji_velvia_50.cube")
// ---- tests ----
describe("createRenderRequest with LUT layers", () => { it("resolves LUT layers through the LUT map into the pass", () => { const luts = lutsWith(VELVIA, cube2) const request = Effect.runSync( createRenderRequest([lutLayer(VELVIA)], registry, fakeBitmap(), 0, luts), ) expect(request.shader.passes).toHaveLength(1) expect(request.shader.passes[0]!.lutId).toBe(VELVIA) // The cube size is baked into the shader source expect(request.shader.passes[0]!.source).toContain("const LUT_SIZE: f32 = 2.0;") // Only `amount` is a uniform slot (lutId is not a uniform) expect(request.shader.passes[0]!.uniforms).toEqual([ { layerIndex: 0, field: "amount", offset: 0 }, ]) // Amount packs from the layer value expect(request.uniforms[0]![0]).toBe(1) expect(request.luts.get(VELVIA)).toBe(cube2) })
it("creates LUT layers with the registry string-field default", () => { const layer = createLayer("lut", registry) expect(layer.type).toBe("lut") if (layer.type === "lut") { // The engine default is empty — the frontend fills the first catalog id expect(layer.lutId).toBe("") expect(layer.amount).toBe(1) } })
it("fails with GpuError when a LUT layer references an unknown id", () => { const message = Effect.runSync( Effect.catchTag( createRenderRequest([lutLayer(LutId("luts/does/not_exist.cube"))], registry, fakeBitmap(), 0, new Map()), "GpuError", (err) => Effect.succeed(err.message), ), ) expect(message).toContain("Unknown LUT: luts/does/not_exist.cube") })
it("hides LUT layers like any other layer", () => { const hidden: Layer = { id: nextLayerId(), visible: false, type: "lut", lutId: VELVIA, amount: 1, } const request = Effect.runSync( createRenderRequest([hidden], registry, fakeBitmap(), 0, lutsWith(VELVIA, cube2)), ) // Passthrough: no LUT pass, and the empty map is never consulted expect(request.shader.passes).toHaveLength(1) expect(request.shader.passes[0]!.lutId).toBeUndefined() })})