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/*
* Copyright (C) 2024 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#include "config.h"
#include "XRGPUSubImage.h"
#if ENABLE(WEBXR_LAYERS)
#include "GPUDevice.h"
#include "GPUTextureDescriptor.h"
#include "GPUTextureFormat.h"
#include "WebXRViewport.h"
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
static constexpr auto gpuSubImageWidth = 1920;
static constexpr auto gpuSubImageHeight = 1824;
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(XRGPUSubImage);
static auto makeTextureViewDescriptor(WebGPU::XREye eye)
{
return GPUTextureViewDescriptor {
.format = std::nullopt,
.dimension = GPUTextureViewDimension::_2d,
.aspect = GPUTextureAspect::All,
.baseMipLevel = 0,
.mipLevelCount = std::nullopt,
.baseArrayLayer = (eye == WebGPU::XREye::Right ? 1u : 0u),
.arrayLayerCount = 1u,
};
}
XRGPUSubImage::XRGPUSubImage(Ref<WebGPU::XRSubImage>&& backing, WebGPU::XREye eye, GPUDevice& device)
: m_backing(WTFMove(backing))
, m_device(device)
, m_descriptor(makeTextureViewDescriptor(eye))
, m_viewport(WebXRViewport::create(IntRect { 0, 0, gpuSubImageWidth, gpuSubImageHeight }))
{
}
static GPUTextureDescriptor textureDescriptor(GPUTextureFormat format)
{
return GPUTextureDescriptor {
{ "canvas backing"_s },
GPUExtent3DDict { gpuSubImageWidth, gpuSubImageHeight, 1 },
1,
1,
GPUTextureDimension::_2d,
format,
GPUTextureUsage::RENDER_ATTACHMENT,
{ }
};
}
ExceptionOr<Ref<GPUTexture>> XRGPUSubImage::colorTexture()
{
RefPtr texture = m_backing->colorTexture();
if (!texture)
return Exception { ExceptionCode::InvalidStateError };
return GPUTexture::create(texture.releaseNonNull(), textureDescriptor(GPUTextureFormat::Bgra8unormSRGB), m_device);
}
RefPtr<GPUTexture> XRGPUSubImage::depthStencilTexture()
{
RefPtr texture = m_backing->depthStencilTexture();
if (!texture)
return nullptr;
return GPUTexture::create(texture.releaseNonNull(), textureDescriptor(GPUTextureFormat::Depth24plus), m_device);
}
RefPtr<GPUTexture> XRGPUSubImage::motionVectorTexture()
{
RELEASE_ASSERT_NOT_REACHED();
return nullptr;
}
const GPUTextureViewDescriptor& XRGPUSubImage::getViewDescriptor() const
{
return m_descriptor;
}
const WebXRViewport& XRGPUSubImage::viewport() const
{
return m_viewport;
}
} // namespace WebCore
#endif // ENABLE(WEBXR_LAYERS)
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