Function encodeCompute

src/renderers/createScatterDensityRenderer.ts:471–505

(encoder)

  };

  const encodeCompute: ScatterDensityRenderer['encodeCompute'] = (encoder) => {
    assertNotDisposed();
    if (!hasPrepared) return;
    if (!computeDirty) return;
    if (!binsBuffer || !maxBuffer || !computeBindGroup || lastPointCount <= 0) {
      computeDirty = false;
      return;
    }
    if (!lastPlotScissor || lastPlotScissor.w <= 0 || lastPlotScissor.h <= 0) {
      computeDirty = false;
      return;
    }

    // Clear bins + max.
    device.queue.writeBuffer(binsBuffer, 0, zeroBinsStaging.buffer, 0, binsCapacityU32 * 4);
    device.queue.writeBuffer(maxBuffer, 0, new Uint32Array([0]).buffer);

    const binTotal = (lastBinCountX * lastBinCountY) | 0;
    const visibleCount = Math.max(0, (lastVisibleEnd - lastVisibleStart) | 0);

    const pass = encoder.beginComputePass({ label: 'scatterDensity/computePass' });
    pass.setBindGroup(0, computeBindGroup);

    pass.setPipeline(binPointsPipeline);
    const wg = 256;
    const groupsPoints = Math.ceil(visibleCount / wg);
    if (groupsPoints > 0) pass.dispatchWorkgroups(groupsPoints);

    pass.setPipeline(reduceMaxPipeline);
    const groupsBins = Math.ceil(binTotal / wg);
    if (groupsBins > 0) pass.dispatchWorkgroups(groupsBins);

    pass.end();
    computeDirty = false;
  };

  const render: ScatterDensityRenderer['render'] = (passEncoder) => {
    assertNotDisposed();