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PresentationContext.mm
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PresentationContext.mm
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/*
* Copyright (c) 2021-2022 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "config.h"
#import "PresentationContext.h"
#import "APIConversions.h"
#import "Adapter.h"
#import "PresentationContextCoreAnimation.h"
#import "PresentationContextIOSurface.h"
namespace WebGPU {
Ref<PresentationContext> Device::createSwapChain(PresentationContext& presentationContext, const WGPUSwapChainDescriptor& descriptor)
{
presentationContext.configure(*this, descriptor);
return presentationContext;
}
Ref<PresentationContext> PresentationContext::create(const WGPUSurfaceDescriptor& descriptor)
{
if (!descriptor.nextInChain || descriptor.nextInChain->next)
return PresentationContext::createInvalid();
switch (static_cast<unsigned>(descriptor.nextInChain->sType)) {
case WGPUSTypeExtended_SurfaceDescriptorCocoaSurfaceBacking:
return PresentationContextIOSurface::create(descriptor);
case WGPUSType_SurfaceDescriptorFromMetalLayer:
return PresentationContextCoreAnimation::create(descriptor);
default:
return PresentationContext::createInvalid();
}
}
PresentationContext::PresentationContext() = default;
PresentationContext::~PresentationContext() = default;
WGPUTextureFormat PresentationContext::getPreferredFormat(const Adapter&)
{
return WGPUTextureFormat_BGRA8Unorm;
}
void PresentationContext::configure(Device&, const WGPUSwapChainDescriptor&)
{
}
void PresentationContext::present()
{
}
TextureView* PresentationContext::getCurrentTextureView()
{
return nullptr;
}
} // namespace WebGPU
#pragma mark WGPU Stubs
void wgpuSurfaceRelease(WGPUSurface surface)
{
WebGPU::fromAPI(surface).deref();
}
void wgpuSwapChainRelease(WGPUSwapChain swapChain)
{
WebGPU::fromAPI(swapChain).deref();
}
WGPUTextureFormat wgpuSurfaceGetPreferredFormat(WGPUSurface surface, WGPUAdapter adapter)
{
return WebGPU::fromAPI(surface).getPreferredFormat(WebGPU::fromAPI(adapter));
}
WGPUTextureView wgpuSwapChainGetCurrentTextureView(WGPUSwapChain swapChain)
{
return WebGPU::fromAPI(swapChain).getCurrentTextureView();
}
void wgpuSwapChainPresent(WGPUSwapChain swapChain)
{
WebGPU::fromAPI(swapChain).present();
}