WebGPU（Chrome 137）中的新变化

const texture = myDevice.createTexture({
  size: [42, 42],
  format: navigator.gpu.getPreferredCanvasFormat(),
  usage: GPUTextureUsage.RENDER_ATTACHMENT | GPUTextureUsage.TEXTURE_BINDING,
});

const code = `
@group(0) @binding(0) var texture : texture_external;
@group(0) @binding(1) var<storage, read_write> buffer: vec2u;
    
@compute @workgroup_size(1) fn main() {
  buffer = textureDimensions(texture);
}`;

const pipeline = myDevice.createComputePipeline({
  layout: "auto",
  compute: { module: myDevice.createShaderModule({ code }) },
});

const bindGroup = myDevice.createBindGroup({
  layout: pipeline.getBindGroupLayout(0),
  entries: [
    { binding: 0, resource: texture.createView() }, // Use texture view for an externalTexture binding
    { binding: 1, resource: { buffer: myBuffer } },
  ],
});

const size = 42;
const srcBuffer = myDevice.createBuffer({
  size,
  usage: GPUBufferUsage.STORAGE | GPUBufferUsage.COPY_SRC,
});
const dstBuffer = myDevice.createBuffer({
  size,
  usage: GPUBufferUsage.COPY_DST | GPUBufferUsage.MAP_READ,
});

// Copy entire buffer.
myCommandEncoder.copyBufferToBuffer(srcBuffer, dstBuffer);

// This is the same as the following.
// myCommandEncoder.copyBufferToBuffer(srcBuffer, 0, dstBuffer, 0, size);

@group(0) @binding(0) var<storage, read_write> buffer : array<u32, 1>;

var<workgroup> wgvar : atomic<u32>;

@compute @workgroup_size(1, 1)
fn main(@builtin(local_invocation_index) lid: u32) {
  if (lid == 0) {
    atomicStore(&(wgvar), 42u);
  }
  buffer[lid] = workgroupUniformLoad(&wgvar);
}

function checkPowerPreferenceForGpuDevice(device) {
  const powerPreference = device.adapterInfo.powerPreference;
  if (powerPreference === "high-performance") {
    // High-performance GPU detected. Enabling enhanced graphics settings.
  } else if (powerPreference === "low-power") {
    // Low-power GPU detected. Optimizing for battery life.
  }
}