Function runTiledParityCase

e2e/webgpu-psnr.spec.ts:214–273

()

      };

      const runTiledParityCase = async (): Promise<{
        full: BrowserPsnrMetric;
        tiled: BrowserPsnrMetric;
      }> => {
        const width = 4;
        const height = 2;
        const renderedPixels = new Uint8Array(width * height * 4);
        const groundTruthPixels = new Uint8Array(width * height * 4);
        for (let pixel = 0; pixel < width * height; pixel++) {
          renderedPixels[pixel * 4 + 3] = 255;
          groundTruthPixels[pixel * 4 + 3] = 255;
        }
        groundTruthPixels[1 * 4] = 10;
        groundTruthPixels[7 * 4 + 1] = 20;

        const renderedTexture = device.createTexture({
          size: { width, height },
          format: 'rgba8unorm',
          usage: textureUsageCopyDst | textureUsageTextureBinding,
        });
        const groundTruthTexture = device.createTexture({
          size: { width, height },
          format: 'rgba8unorm',
          usage: textureUsageCopyDst | textureUsageTextureBinding,
        });
        try {
          uploadTexture(renderedTexture, width, height, renderedPixels);
          uploadTexture(groundTruthTexture, width, height, groundTruthPixels);
          const full = await computePsnrFromRgbaTexturesWebGpu({
            device: trackedDevice,
            renderedTexture,
            groundTruthTexture,
            width,
            height,
          });
          const left = await computePsnrTextureReductionFromRgbaTexturesWebGpu({
            device: trackedDevice,
            renderedTexture,
            groundTruthTexture,
            width: 2,
            height,
          });
          const right = await computePsnrTextureReductionFromRgbaTexturesWebGpu({
            device: trackedDevice,
            renderedTexture,
            groundTruthTexture,
            width: 2,
            height,
            renderedOrigin: { x: 2, y: 0 },
            groundTruthOrigin: { x: 2, y: 0 },
          });
          const tiled = computePsnrFromTextureReduction(
            accumulatePsnrTextureReductions([left, right])
          );
          return { full, tiled };
        } finally {
          renderedTexture.destroy();
          groundTruthTexture.destroy();