LayoutTests/webgpu/whlsl-ensure-proper-variable-lifetime.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <script src="js/webgpu-functions.js"></script>
 </head>
 <body>
 <canvas id="canvas" width="400" height="400"></canvas>
 <script>
 const shaderSource = `
 struct VertexOut {
     float4 position : SV_Position;
     float shade : attribute(0);
 }

 float assignToPtr(thread float* ptr, float value) {
     return *ptr = value;
 }

 thread float* realPtr(float value)
 {
     return &value;
 }

 thread float* firstPtr(float value) {
     return realPtr(value);
 }

 thread float* secondPtr(float value) {
     return firstPtr(value);
 }

 vertex VertexOut vertexShader(float4 position : attribute(0), float shade : attribute(1)) {
     VertexOut result;

     thread float* ptrToShade = firstPtr(shade);
     thread float* ptrToShade2 = secondPtr(1.0);

     float dummy;
     thread float* dummyPtr = &dummy;

     dummy = assignToPtr(ptrToShade2, 0.0);
     dummy = assignToPtr(ptrToShade, shade);

     result.position = position;

     result.shade = *ptrToShade2;

     return result;
 }

 fragment float4 fragmentShader(float shade : attribute(0)) : SV_Target 0 {
     return float4(shade, shade, shade, 1.0);
 }
 `;

 const canvas = document.getElementById("canvas");

 async function start(device) {
     const shaderModule = device.createShaderModule({code: shaderSource, isWHLSL: true});
     const vertexStage = {module: shaderModule, entryPoint: "vertexShader"};
     const fragmentStage = {module: shaderModule, entryPoint: "fragmentShader"};
     const primitiveTopology = "triangle-strip";
     const rasterizationState = {frontFace: "cw", cullMode: "none"};
     const alphaBlend = {};
     const colorBlend = {};
     const colorStates = [{format: "rgba8unorm", alphaBlend, colorBlend, writeMask: 15}]; // GPUColorWriteBits.ALL
     const depthStencilState = null;

     const attribute0 = {shaderLocation: 0, format: "float4"};
     const attribute1 = {shaderLocation: 1, format: "float", offset: 16};
     const attributes = [attribute0, attribute1];
     const input0 = {stride: 20, attributeSet: attributes};
     const inputs = [input0];
     const vertexInput = {vertexBuffers: inputs};

     const bindGroupLayoutDescriptor = {bindings: [{binding: 0, visibility: 7, type: "uniform-buffer"}]};
     const bindGroupLayout = device.createBindGroupLayout(bindGroupLayoutDescriptor);
     const pipelineLayoutDescriptor = {bindGroupLayouts: [bindGroupLayout]};
     const pipelineLayout = device.createPipelineLayout(pipelineLayoutDescriptor);

     const renderPipelineDescriptor = {vertexStage, fragmentStage, primitiveTopology, rasterizationState, colorStates, depthStencilState, vertexInput, sampleCount: 1, layout: pipelineLayout};
     const renderPipeline = device.createRenderPipeline(renderPipelineDescriptor);

     const vertexBuffer0Descriptor = {size: Float32Array.BYTES_PER_ELEMENT * 5 * 4, usage: GPUBufferUsage.VERTEX | GPUBufferUsage.MAP_WRITE};
     const vertexBuffer0 = device.createBuffer(vertexBuffer0Descriptor);
     const vertexBuffer0ArrayBuffer = await vertexBuffer0.mapWriteAsync();
     const vertexBuffer0Float32Array = new Float32Array(vertexBuffer0ArrayBuffer);
     vertexBuffer0Float32Array[0] = -0.5;
     vertexBuffer0Float32Array[1] = -0.5;
     vertexBuffer0Float32Array[2] = 1.0;
     vertexBuffer0Float32Array[3] = 1.0;
     vertexBuffer0Float32Array[4] = 1.0;

     vertexBuffer0Float32Array[5] = -0.5;
     vertexBuffer0Float32Array[6] = 0.5;
     vertexBuffer0Float32Array[7] = 1.0;
     vertexBuffer0Float32Array[8] = 1.0;
     vertexBuffer0Float32Array[9] = 1.0;

     vertexBuffer0Float32Array[10] = 0.5;
     vertexBuffer0Float32Array[11] = -0.5;
     vertexBuffer0Float32Array[12] = 1.0;
     vertexBuffer0Float32Array[13] = 1.0;
     vertexBuffer0Float32Array[14] = 1.0;

     vertexBuffer0Float32Array[15] = 0.5;
     vertexBuffer0Float32Array[16] = 0.5;
     vertexBuffer0Float32Array[17] = 1.0;
     vertexBuffer0Float32Array[18] = 1.0;
     vertexBuffer0Float32Array[19] = 1.0;
     vertexBuffer0.unmap();

     const resourceBufferDescriptor = {size: Float32Array.BYTES_PER_ELEMENT, usage: GPUBufferUsage.UNIFORM | GPUBufferUsage.MAP_WRITE};
     const resourceBuffer = device.createBuffer(resourceBufferDescriptor);
     const resourceBufferArrayBuffer = await resourceBuffer.mapWriteAsync();
     const resourceBufferFloat32Array = new Float32Array(resourceBufferArrayBuffer);
     resourceBufferFloat32Array[0] = 1;
     resourceBuffer.unmap();

     const bufferBinding = {buffer: resourceBuffer, size: 4};
     const bindGroupBinding = {binding: 0, resource: bufferBinding};
     const bindGroupDescriptor = {layout: bindGroupLayout, bindings: [bindGroupBinding]};
     const bindGroup = device.createBindGroup(bindGroupDescriptor);

     const context = canvas.getContext("gpu");
     const swapChainDescriptor = {device, format: "bgra8unorm"};
     const swapChain = context.configureSwapChain(swapChainDescriptor);
     const outputTexture = swapChain.getCurrentTexture();
     const outputTextureView = outputTexture.createDefaultView();

     const commandEncoder = device.createCommandEncoder(); // {}
     const red = {r: 0, g: 0, b: 1, a: 1};
     const colorAttachments = [{attachment: outputTextureView, resolveTarget: null, loadOp: "clear", storeOp: "store", clearColor: red}];
     const depthStencilAttachment = null;
     const renderPassDescriptor = {colorAttachments, depthStencilAttachment};
     const renderPassEncoder = commandEncoder.beginRenderPass(renderPassDescriptor);
     renderPassEncoder.setPipeline(renderPipeline);
     renderPassEncoder.setBindGroup(0, bindGroup);
     renderPassEncoder.setVertexBuffers(0, [vertexBuffer0], [0]);
     renderPassEncoder.draw(4, 1, 0, 0);
     renderPassEncoder.endPass();
     const commandBuffer = commandEncoder.finish();
     device.getQueue().submit([commandBuffer]);
 }
 if (window.testRunner)
     testRunner.waitUntilDone();
 getBasicDevice().then(function(device) {
     start(device).then(function() {
         if (window.testRunner)
             testRunner.notifyDone();
     }, function() {
         if (window.testRunner)
             testRunner.notifyDone();
     });
 }, function() {
     drawWhiteSquareOnBlueBackgroundInSoftware(canvas);
     if (window.testRunner)
         testRunner.notifyDone();
 });
 </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<script src="js/webgpu-functions.js"></script>
	</head>
	<body>
	<canvas id="canvas" width="400" height="400"></canvas>
	<script>
	const shaderSource = `
	struct VertexOut {
	float4 position : SV_Position;
	float shade : attribute(0);
	}

	float assignToPtr(thread float* ptr, float value) {
	return *ptr = value;
	}

	thread float* realPtr(float value)
	{
	return &value;
	}

	thread float* firstPtr(float value) {
	return realPtr(value);
	}

	thread float* secondPtr(float value) {
	return firstPtr(value);
	}

	vertex VertexOut vertexShader(float4 position : attribute(0), float shade : attribute(1)) {
	VertexOut result;

	thread float* ptrToShade = firstPtr(shade);
	thread float* ptrToShade2 = secondPtr(1.0);

	float dummy;
	thread float* dummyPtr = &dummy;

	dummy = assignToPtr(ptrToShade2, 0.0);
	dummy = assignToPtr(ptrToShade, shade);

	result.position = position;

	result.shade = *ptrToShade2;

	return result;
	}

	fragment float4 fragmentShader(float shade : attribute(0)) : SV_Target 0 {
	return float4(shade, shade, shade, 1.0);
	}
	`;

	const canvas = document.getElementById("canvas");

	async function start(device) {
	const shaderModule = device.createShaderModule({code: shaderSource, isWHLSL: true});
	const vertexStage = {module: shaderModule, entryPoint: "vertexShader"};
	const fragmentStage = {module: shaderModule, entryPoint: "fragmentShader"};
	const primitiveTopology = "triangle-strip";
	const rasterizationState = {frontFace: "cw", cullMode: "none"};
	const alphaBlend = {};
	const colorBlend = {};
	const colorStates = [{format: "rgba8unorm", alphaBlend, colorBlend, writeMask: 15}]; // GPUColorWriteBits.ALL
	const depthStencilState = null;

	const attribute0 = {shaderLocation: 0, format: "float4"};
	const attribute1 = {shaderLocation: 1, format: "float", offset: 16};
	const attributes = [attribute0, attribute1];
	const input0 = {stride: 20, attributeSet: attributes};
	const inputs = [input0];
	const vertexInput = {vertexBuffers: inputs};

	const bindGroupLayoutDescriptor = {bindings: [{binding: 0, visibility: 7, type: "uniform-buffer"}]};
	const bindGroupLayout = device.createBindGroupLayout(bindGroupLayoutDescriptor);
	const pipelineLayoutDescriptor = {bindGroupLayouts: [bindGroupLayout]};
	const pipelineLayout = device.createPipelineLayout(pipelineLayoutDescriptor);

	const renderPipelineDescriptor = {vertexStage, fragmentStage, primitiveTopology, rasterizationState, colorStates, depthStencilState, vertexInput, sampleCount: 1, layout: pipelineLayout};
	const renderPipeline = device.createRenderPipeline(renderPipelineDescriptor);

	const vertexBuffer0Descriptor = {size: Float32Array.BYTES_PER_ELEMENT * 5 * 4, usage: GPUBufferUsage.VERTEX \| GPUBufferUsage.MAP_WRITE};
	const vertexBuffer0 = device.createBuffer(vertexBuffer0Descriptor);
	const vertexBuffer0ArrayBuffer = await vertexBuffer0.mapWriteAsync();
	const vertexBuffer0Float32Array = new Float32Array(vertexBuffer0ArrayBuffer);
	vertexBuffer0Float32Array[0] = -0.5;
	vertexBuffer0Float32Array[1] = -0.5;
	vertexBuffer0Float32Array[2] = 1.0;
	vertexBuffer0Float32Array[3] = 1.0;
	vertexBuffer0Float32Array[4] = 1.0;

	vertexBuffer0Float32Array[5] = -0.5;
	vertexBuffer0Float32Array[6] = 0.5;
	vertexBuffer0Float32Array[7] = 1.0;
	vertexBuffer0Float32Array[8] = 1.0;
	vertexBuffer0Float32Array[9] = 1.0;

	vertexBuffer0Float32Array[10] = 0.5;
	vertexBuffer0Float32Array[11] = -0.5;
	vertexBuffer0Float32Array[12] = 1.0;
	vertexBuffer0Float32Array[13] = 1.0;
	vertexBuffer0Float32Array[14] = 1.0;

	vertexBuffer0Float32Array[15] = 0.5;
	vertexBuffer0Float32Array[16] = 0.5;
	vertexBuffer0Float32Array[17] = 1.0;
	vertexBuffer0Float32Array[18] = 1.0;
	vertexBuffer0Float32Array[19] = 1.0;
	vertexBuffer0.unmap();

	const resourceBufferDescriptor = {size: Float32Array.BYTES_PER_ELEMENT, usage: GPUBufferUsage.UNIFORM \| GPUBufferUsage.MAP_WRITE};
	const resourceBuffer = device.createBuffer(resourceBufferDescriptor);
	const resourceBufferArrayBuffer = await resourceBuffer.mapWriteAsync();
	const resourceBufferFloat32Array = new Float32Array(resourceBufferArrayBuffer);
	resourceBufferFloat32Array[0] = 1;
	resourceBuffer.unmap();

	const bufferBinding = {buffer: resourceBuffer, size: 4};
	const bindGroupBinding = {binding: 0, resource: bufferBinding};
	const bindGroupDescriptor = {layout: bindGroupLayout, bindings: [bindGroupBinding]};
	const bindGroup = device.createBindGroup(bindGroupDescriptor);

	const context = canvas.getContext("gpu");
	const swapChainDescriptor = {device, format: "bgra8unorm"};
	const swapChain = context.configureSwapChain(swapChainDescriptor);
	const outputTexture = swapChain.getCurrentTexture();
	const outputTextureView = outputTexture.createDefaultView();

	const commandEncoder = device.createCommandEncoder(); // {}
	const red = {r: 0, g: 0, b: 1, a: 1};
	const colorAttachments = [{attachment: outputTextureView, resolveTarget: null, loadOp: "clear", storeOp: "store", clearColor: red}];
	const depthStencilAttachment = null;
	const renderPassDescriptor = {colorAttachments, depthStencilAttachment};
	const renderPassEncoder = commandEncoder.beginRenderPass(renderPassDescriptor);
	renderPassEncoder.setPipeline(renderPipeline);
	renderPassEncoder.setBindGroup(0, bindGroup);
	renderPassEncoder.setVertexBuffers(0, [vertexBuffer0], [0]);
	renderPassEncoder.draw(4, 1, 0, 0);
	renderPassEncoder.endPass();
	const commandBuffer = commandEncoder.finish();
	device.getQueue().submit([commandBuffer]);
	}
	if (window.testRunner)
	testRunner.waitUntilDone();
	getBasicDevice().then(function(device) {
	start(device).then(function() {
	if (window.testRunner)
	testRunner.notifyDone();
	}, function() {
	if (window.testRunner)
	testRunner.notifyDone();
	});
	}, function() {
	drawWhiteSquareOnBlueBackgroundInSoftware(canvas);
	if (window.testRunner)
	testRunner.notifyDone();
	});
	</script>
	</body>
	</html>