Source/WebCore:

Source/WebCore:
[WebGPU] Implement WebGPUBuffer, and some nullibility consistency in WebGPU
https://bugs.webkit.org/show_bug.cgi?id=192516

Reviewed by Dean Jackson.

Test: webgpu/buffers.html

Enable basic creation of WebGPUBuffers, and fix nullability inconsitencies in WebGPU implementation.

Add necessary symbols and files for Web/GPUBuffer, Web/GPUBufferUsage, and Web/GPUBufferDescriptor:
* CMakeLists.txt:
* DerivedSources.make:
* Sources.txt:
* SourcesCocoa.txt:
* WebCore.xcodeproj/project.pbxproj:
* bindings/js/WebCoreBuiltinNames.h:

* Modules/webgpu/WebGPUBuffer.cpp: Added.
(WebCore::WebGPUBuffer::create):
(WebCore::WebGPUBuffer::WebGPUBuffer):
* Modules/webgpu/WebGPUBuffer.h: Added.
(WebCore::WebGPUBuffer::mapping const):
(WebCore::WebGPUBuffer::unmap): Unimplemented stub, for now, as Metal equivalent is unclear.
(WebCore::WebGPUBuffer::destroy): Unimplemented stub.
* Modules/webgpu/WebGPUBuffer.idl: Added.
* Modules/webgpu/WebGPUBufferDescriptor.h: Added.
* Modules/webgpu/WebGPUBufferDescriptor.idl: Added.
* Modules/webgpu/WebGPUDevice.cpp:
(WebCore::WebGPUDevice::createBuffer const): Added.
* platform/graphics/gpu/GPUBuffer.h:
(WebCore::GPUBuffer::platformBuffer const):
(WebCore::GPUBuffer::mapping const):
* platform/graphics/gpu/GPUBufferDescriptor.h: Added.
* platform/graphics/gpu/GPUDevice.cpp:
(WebCore::GPUDevice::createBuffer const): Added.
* platform/graphics/gpu/GPUDevice.h:
* platform/graphics/gpu/cocoa/GPUBufferMetal.mm: Added.
(WebCore::GPUBuffer::create): Attempt to create a page-aligned Gigacage to back the GPUBuffer's ArrayBuffer.
(WebCore::GPUBuffer::GPUBuffer):
(WebCore::GPUBuffer::~GPUBuffer): Dereference mapped ArrayBuffer first.

Small benign edits, most to make nullability more consistent in WebGPU classes:
* Modules/webgpu/WebGPUCommandBuffer.cpp:
(WebCore::WebGPUCommandBuffer::create):
(WebCore::WebGPUCommandBuffer::beginRenderPass):
* Modules/webgpu/WebGPUCommandBuffer.h:
* Modules/webgpu/WebGPUDevice.cpp:
(WebCore::WebGPUDevice::create):
(WebCore::WebGPUDevice::WebGPUDevice):
(WebCore::WebGPUDevice::createShaderModule const):
(WebCore::WebGPUDevice::createRenderPipeline const):
(WebCore::WebGPUDevice::createCommandBuffer const):
* Modules/webgpu/WebGPUDevice.h:
(WebCore::WebGPUDevice::device const):
* Modules/webgpu/WebGPUDevice.idl:
* Modules/webgpu/WebGPUQueue.cpp:
(WebCore::WebGPUQueue::create):
* Modules/webgpu/WebGPURenderPassEncoder.cpp:
(WebCore::WebGPURenderPassEncoder::create):
* Modules/webgpu/WebGPURenderPassEncoder.h:
* Modules/webgpu/WebGPUShaderModule.cpp:
(WebCore::WebGPUShaderModule::create):
(WebCore::WebGPUShaderModule::WebGPUShaderModule):
* Modules/webgpu/WebGPUShaderModule.h:
(WebCore::WebGPUShaderModule::module const):
* Modules/webgpu/WebGPUSwapChain.idl: Sync with IDL changes.
* Modules/webgpu/WebGPUTexture.cpp:
(WebCore::WebGPUTexture::create):
(WebCore::WebGPUTexture::createDefaultTextureView):
* Modules/webgpu/WebGPUTextureView.cpp:
(WebCore::WebGPUTextureView::create):
* Modules/webgpu/WebGPUTextureView.h:
* platform/graphics/gpu/cocoa/GPUQueueMetal.mm:
(WebCore::GPUQueue::create):
* platform/graphics/gpu/cocoa/GPURenderPipelineMetal.mm:
(WebCore::GPURenderPipeline::create):
* platform/graphics/gpu/cocoa/GPUShaderModuleMetal.mm:
(WebCore::GPUShaderModule::create):
* platform/graphics/gpu/cocoa/GPUSwapChainMetal.mm:
(WebCore::GPUSwapChain::setDevice):
* platform/graphics/gpu/cocoa/GPUTextureMetal.mm:
(WebCore::GPUTexture::GPUTexture):

LayoutTests:
[WebGPU] Implement WebGPUBuffer
https://bugs.webkit.org/show_bug.cgi?id=192516

Reviewed by Dean Jackson.

Basic test to create a WebGPUBuffer and ensure that its memory is valid.

* webgpu/buffers-expected.txt: Added.
* webgpu/buffers.html: Added.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@239094 268f45cc-cd09-0410-ab3c-d52691b4dbfc