/*
 * Copyright (C) 2019 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 "WebGPURenderPipelineDescriptor.h"

#if ENABLE(WEBGPU)

#include "GPUErrorScopes.h"

namespace WebCore {

Optional<GPURenderPipelineDescriptor> WebGPURenderPipelineDescriptor::tryCreateGPURenderPipelineDescriptor(GPUErrorScopes& errorScopes) const
{
    auto pipelineLayout = layout ? makeRefPtr(layout->pipelineLayout()) : nullptr;

    auto vertex = vertexStage.tryCreateGPUProgrammableStageDescriptor();

    Optional<GPUProgrammableStageDescriptor> fragment;
    if (fragmentStage)
        fragment = fragmentStage->tryCreateGPUProgrammableStageDescriptor();

    if (!vertex || (fragmentStage && !fragment)) {
        errorScopes.generatePrefixedError("Invalid GPUProgrammableStageDescriptor!");
        return WTF::nullopt;
    }

    // FIXME: Web GPU validation, e.g. fail if colorStates is larger than (max number of supported color states).

    return GPURenderPipelineDescriptor { WTFMove(pipelineLayout), WTFMove(*vertex), WTFMove(fragment), *this };
}

} // namespace WebCore

#endif // ENABLE(WEBGPU)