| <!DOCTYPE html> |
| <html> |
| <head> |
| <script src="../js/webgpu-functions.js"></script> |
| <script src="../../resources/js-test-pre.js"></script> |
| </head> |
| <body> |
| <script> |
| const shaderSource = ` |
| [numthreads(1, 1, 1)] |
| compute void computeShader(Texture2D<float4> theTexture : register(t0), device uint[] theBuffer : register(u1)) { |
| uint width; |
| uint height; |
| uint numberOfLevels; |
| GetDimensions(theTexture, 0, &width, &height, &numberOfLevels); |
| theBuffer[0] = width; |
| theBuffer[1] = height; |
| theBuffer[2] = numberOfLevels; |
| } |
| `; |
| |
| async function start(device) { |
| const shaderModule = device.createShaderModule({code: shaderSource}); |
| const computeStage = {module: shaderModule, entryPoint: "computeShader"}; |
| |
| const bindGroupLayoutDescriptor = {bindings: [{binding: 0, visibility: 7, type: "sampled-texture"}, {binding: 1, visibility: 7, type: "storage-buffer"}]}; |
| const bindGroupLayout = device.createBindGroupLayout(bindGroupLayoutDescriptor); |
| const pipelineLayoutDescriptor = {bindGroupLayouts: [bindGroupLayout]}; |
| const pipelineLayout = device.createPipelineLayout(pipelineLayoutDescriptor); |
| |
| const computePipelineDescriptor = {computeStage, layout: pipelineLayout}; |
| const computePipeline = device.createComputePipeline(computePipelineDescriptor); |
| |
| const textureDescriptor = {size: {width: 2, height: 2, depth: 1}, format: "rgba8unorm", usage: GPUTextureUsage.SAMPLED}; |
| const texture = device.createTexture(textureDescriptor); |
| const textureView = texture.createDefaultView(); |
| |
| const resultsBufferDescriptor = {size: Uint32Array.BYTES_PER_ELEMENT * 3, usage: GPUBufferUsage.STORAGE | GPUBufferUsage.MAP_READ}; |
| const resultsBuffer = device.createBuffer(resultsBufferDescriptor); |
| |
| const bufferBinding = {buffer: resultsBuffer, size: Uint32Array.BYTES_PER_ELEMENT * 3}; |
| const bindGroupBindings = [{binding: 0, resource: textureView}, {binding: 1, resource: bufferBinding}]; |
| const bindGroupDescriptor = {layout: bindGroupLayout, bindings: bindGroupBindings}; |
| const bindGroup = device.createBindGroup(bindGroupDescriptor); |
| |
| const commandEncoder = device.createCommandEncoder(); // {} |
| const computePassEncoder = commandEncoder.beginComputePass(); |
| computePassEncoder.setPipeline(computePipeline); |
| computePassEncoder.setBindGroup(0, bindGroup); |
| computePassEncoder.dispatch(1, 1, 1); |
| computePassEncoder.endPass(); |
| const commandBuffer = commandEncoder.finish(); |
| device.getQueue().submit([commandBuffer]); |
| |
| const resultsArrayBuffer = await resultsBuffer.mapReadAsync(); |
| const resultsUint32Array = new Uint32Array(resultsArrayBuffer); |
| if (resultsUint32Array[0] == 2 |
| && resultsUint32Array[1] == 2 |
| && resultsUint32Array[2] == 1) |
| testPassed(""); |
| else |
| testFailed(""); |
| resultsBuffer.unmap(); |
| } |
| window.jsTestIsAsync = true; |
| getBasicDevice().then(function(device) { |
| start(device).then(function() { |
| finishJSTest(); |
| }, function() { |
| testFailed(""); |
| finishJSTest(); |
| }); |
| }, function() { |
| testPassed(""); |
| finishJSTest(); |
| }); |
| </script> |
| <script src="../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
