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5 changes: 2 additions & 3 deletions 4d_creatures/hypercamera_webgpu.html
Original file line number Diff line number Diff line change
Expand Up @@ -2074,7 +2074,7 @@
// Create temp buffer for scan algorithm
const tempBuffer = device.createBuffer({
size: accelStructureCountsData.byteLength,
usage: GPUBufferUsage.STORAGE | GPUBufferUsage.COPY_DST | GPUBufferUsage.COPY_SRC // NOCOMMIT DEBUG
usage: GPUBufferUsage.STORAGE | GPUBufferUsage.COPY_DST | GPUBufferUsage.COPY_SRC
});

// Create a larger buffer for parameters
Expand Down Expand Up @@ -2941,13 +2941,12 @@
const itemsReadStart = 100000;
readbackEncoder.copyBufferToBuffer(cellCountsBuffer, itemsReadStart * 4, readbackBuffer, 0, nItemsToRead * 4);
readbackEncoder.copyBufferToBuffer(cellOffsetsBuffer, itemsReadStart * 4, readbackBuffer, nItemsToRead * 4, nItemsToRead * 4);
readbackEncoder.copyBufferToBuffer(tempBuffer, itemsReadStart * 4, readbackBuffer, nItemsToRead * 8, nItemsToRead * 4); // NOCOMMIT DEBUG
readbackEncoder.copyBufferToBuffer(tempBuffer, itemsReadStart * 4, readbackBuffer, nItemsToRead * 8, nItemsToRead * 4);
device.queue.submit([readbackEncoder.finish()]);
await readbackBuffer.mapAsync(GPUMapMode.READ);
const readbackArray = new Uint32Array(readbackBuffer.getMappedRange());
console.log('Cell Counts:', readbackArray.slice(0, nItemsToRead));
console.log('Cell Offsets:', readbackArray.slice(nItemsToRead, nItemsToRead * 2));
console.log('Temp Buffer (NOCOMMIT DEBUG):', readbackArray.slice(nItemsToRead * 2, nItemsToRead * 3));
readbackBuffer.unmap();
}

Expand Down