Source/WebCore/Modules/webgpu/WebGPUCommandBuffer.cpp

/*
 * Copyright (C) 2018 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
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 */

#include "config.h"
#include "WebGPUCommandBuffer.h"

#if ENABLE(WEBGPU)

#include "GPUCommandBuffer.h"
#include "GPURenderPassDescriptor.h"
#include "GPURenderPassEncoder.h"
#include "Logging.h"
#include "WebGPURenderPassDescriptor.h"
#include "WebGPURenderPassEncoder.h"

namespace WebCore {

Ref<WebGPUCommandBuffer> WebGPUCommandBuffer::create(Ref<GPUCommandBuffer>&& buffer)
{
    return adoptRef(*new WebGPUCommandBuffer(WTFMove(buffer)));
}

WebGPUCommandBuffer::WebGPUCommandBuffer(Ref<GPUCommandBuffer>&& buffer)
    : m_commandBuffer(WTFMove(buffer))
{
}

RefPtr<WebGPURenderPassEncoder> WebGPUCommandBuffer::beginRenderPass(WebGPURenderPassDescriptor&& descriptor)
{
    // FIXME: Improve error checking as WebGPURenderPassDescriptor is implemented.
    if (descriptor.colorAttachments.isEmpty()) {
        LOG(WebGPU, "WebGPUCommandBuffer::create(): No attachments specified for WebGPURenderPassDescriptor!");
        return nullptr;
    }

    GPURenderPassDescriptor gpuRenderPassDescriptor;

    for (const auto& colorAttachment : descriptor.colorAttachments) {
        if (!colorAttachment.attachment) {
            LOG(WebGPU, "WebGPUCommandBuffer::create(): Invalid attachment in WebGPURenderPassColorAttachmentDescriptor!");
            return nullptr;
        }
        gpuRenderPassDescriptor.colorAttachments.append(GPURenderPassColorAttachmentDescriptor { colorAttachment.attachment->texture(), colorAttachment.clearColor });
    }

    if (auto encoder = GPURenderPassEncoder::create(m_commandBuffer.get(), WTFMove(gpuRenderPassDescriptor)))
        return WebGPURenderPassEncoder::create(*this, encoder.releaseNonNull());
    return nullptr;
}

} // namespace WebCore

#endif // ENABLE(WEBGPU)