Modified: trunk/Source/WebGPU/CommandLinePlayground/main.swift (291376 => 291377)
--- trunk/Source/WebGPU/CommandLinePlayground/main.swift 2022-03-17 00:02:29 UTC (rev 291376)
+++ trunk/Source/WebGPU/CommandLinePlayground/main.swift 2022-03-17 00:05:30 UTC (rev 291377)
@@ -34,9 +34,7 @@
var adapter: WGPUAdapter!
var requestAdapterOptions = WGPURequestAdapterOptions(nextInChain: nil, compatibleSurface: nil, powerPreference: WGPUPowerPreference_Undefined, forceFallbackAdapter: false)
wgpuInstanceRequestAdapterWithBlock(instance, &requestAdapterOptions) { (status: WGPURequestAdapterStatus, localAdapter: Optional<WGPUAdapter>, message: Optional<UnsafePointer<Int8>>) in
- guard let localAdapter = localAdapter else {
- fatalError()
- }
+ assert(localAdapter != nil)
adapter = localAdapter
}
defer {
@@ -44,7 +42,62 @@
}
print("Adapter: \(String(describing: adapter))")
-//wgpuInstanceProcessEvents(instance)
+var device: WGPUDevice!
+var deviceDescriptor = WGPUDeviceDescriptor(nextInChain: nil, label: nil, requiredFeaturesCount: 0, requiredFeatures: nil, requiredLimits: nil)
+wgpuAdapterRequestDeviceWithBlock(adapter, &deviceDescriptor) { (status: WGPURequestDeviceStatus, localDevice: Optional<WGPUDevice>, message: Optional<UnsafePointer<Int8>>) in
+ assert(localDevice != nil)
+ device = localDevice
+}
+defer {
+ wgpuDeviceRelease(device)
+}
+print("Device: \(String(describing: device))")
+var uploadBufferDescriptor = WGPUBufferDescriptor(nextInChain: nil, label: nil, usage: WGPUBufferUsage_MapWrite.rawValue | WGPUBufferUsage_CopySrc.rawValue, size: UInt64(MemoryLayout<Int32>.size), mappedAtCreation: false)
+let uploadBuffer = wgpuDeviceCreateBuffer(device, &uploadBufferDescriptor)
+assert(uploadBuffer != nil)
+defer {
+ wgpuBufferRelease(uploadBuffer)
+}
+var downloadBufferDescriptor = WGPUBufferDescriptor(nextInChain: nil, label: nil, usage: WGPUBufferUsage_MapRead.rawValue | WGPUBufferUsage_CopyDst.rawValue, size: UInt64(MemoryLayout<Int32>.size), mappedAtCreation: false)
+let downloadBuffer = wgpuDeviceCreateBuffer(device, &downloadBufferDescriptor)
+assert(downloadBuffer != nil)
+defer {
+ wgpuBufferRelease(downloadBuffer)
+}
+
+wgpuBufferMapAsyncWithBlock(uploadBuffer, WGPUMapMode_Write.rawValue, 0, MemoryLayout<Int32>.size) { (status: WGPUBufferMapAsyncStatus) in
+ assert(status == WGPUBufferMapAsyncStatus_Success);
+ let writePointer = wgpuBufferGetMappedRange(uploadBuffer, 0, MemoryLayout<Int32>.size).bindMemory(to: Int32.self, capacity: 1)
+ writePointer[0] = 17
+ wgpuBufferUnmap(uploadBuffer)
+
+ var commandEncoderDescriptor = WGPUCommandEncoderDescriptor(nextInChain: nil, label: nil)
+ let commandEncoder = wgpuDeviceCreateCommandEncoder(device, &commandEncoderDescriptor)
+ defer {
+ wgpuCommandEncoderRelease(commandEncoder)
+ }
+ wgpuCommandEncoderCopyBufferToBuffer(commandEncoder, uploadBuffer, 0, downloadBuffer, 0, UInt64(MemoryLayout<Int32>.size))
+ var commandBufferDescriptor = WGPUCommandBufferDescriptor(nextInChain: nil, label: nil)
+ let commandBuffer = wgpuCommandEncoderFinish(commandEncoder, &commandBufferDescriptor)
+ defer {
+ wgpuCommandBufferRelease(commandBuffer)
+ }
+
+ let commands: [WGPUCommandBuffer?] = [commandBuffer]
+ wgpuQueueSubmit(wgpuDeviceGetQueue(device), UInt32(commands.count), commands)
+
+ wgpuQueueOnSubmittedWorkDoneWithBlock(wgpuDeviceGetQueue(device), 0) { (status: WGPUQueueWorkDoneStatus) in
+ assert(status == WGPUQueueWorkDoneStatus_Success)
+ wgpuBufferMapAsyncWithBlock(downloadBuffer, WGPUMapMode_Read.rawValue, 0, MemoryLayout<Int32>.size) { (status: WGPUBufferMapAsyncStatus) in
+ assert(status == WGPUBufferMapAsyncStatus_Success);
+ let readPointer = wgpuBufferGetMappedRange(downloadBuffer, 0, MemoryLayout<Int32>.size).bindMemory(to: Int32.self, capacity: 1)
+ print("Result: \(readPointer[0])")
+ wgpuBufferUnmap(downloadBuffer)
+ CFRunLoopStop(CFRunLoopGetMain())
+ }
+ }
+}
+
CFRunLoopRun()
