Source/WebKit/Shared/WebGPU/WebGPUBindGroupDescriptor.cpp

/*
 * Copyright (C) 2021 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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#include "config.h"
#include "WebGPUBindGroupDescriptor.h"

#if ENABLE(GPU_PROCESS)

#include "WebGPUConvertFromBackingContext.h"
#include "WebGPUConvertToBackingContext.h"
#include <pal/graphics/WebGPU/WebGPUBindGroupDescriptor.h>

namespace WebKit::WebGPU {

std::optional<BindGroupDescriptor> ConvertToBackingContext::convertToBacking(const PAL::WebGPU::BindGroupDescriptor& bindGroupDescriptor)
{
    auto base = convertToBacking(static_cast<const PAL::WebGPU::ObjectDescriptorBase&>(bindGroupDescriptor));
    if (!base)
        return std::nullopt;

    auto identifier = convertToBacking(bindGroupDescriptor.layout);
    if (!identifier)
        return std::nullopt;

    Vector<BindGroupEntry> entries;
    entries.reserveInitialCapacity(bindGroupDescriptor.entries.size());
    for (const auto& entry : bindGroupDescriptor.entries) {
        auto convertedEntry = convertToBacking(entry);
        if (!convertedEntry)
            return std::nullopt;
        entries.uncheckedAppend(WTFMove(*convertedEntry));
    }

    return { { WTFMove(*base), identifier, WTFMove(entries) } };
}

std::optional<PAL::WebGPU::BindGroupDescriptor> ConvertFromBackingContext::convertFromBacking(const BindGroupDescriptor& bindGroupDescriptor)
{
    auto base = convertFromBacking(static_cast<const ObjectDescriptorBase&>(bindGroupDescriptor));
    if (!base)
        return std::nullopt;

    auto* bindGroupLayout = convertBindGroupLayoutFromBacking(bindGroupDescriptor.bindGroupLayout);
    if (!bindGroupLayout)
        return std::nullopt;

    Vector<PAL::WebGPU::BindGroupEntry> entries;
    entries.reserveInitialCapacity(bindGroupDescriptor.entries.size());
    for (const auto& backingEntry : bindGroupDescriptor.entries) {
        auto entry = convertFromBacking(backingEntry);
        if (!entry)
            return std::nullopt;
        entries.uncheckedAppend(WTFMove(*entry));
    }

    return { { WTFMove(*base), *bindGroupLayout, WTFMove(entries) } };
}

} // namespace WebKit

#endif // ENABLE(GPU_PROCESS)