Source/WebCore/platform/graphics/cocoa/GPURenderPassDescriptorMetal.mm

/*
 * Copyright (C) 2017 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
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 */

#import "config.h"
#import "GPURenderPassDescriptor.h"

#if ENABLE(WEBGPU)

#import "GPURenderPassColorAttachmentDescriptor.h"
#import "GPURenderPassDepthAttachmentDescriptor.h"
#import "Logging.h"

#import <Metal/Metal.h>

namespace WebCore {

GPURenderPassDescriptor::GPURenderPassDescriptor()
{
    LOG(WebGPU, "GPURenderPassDescriptor::GPURenderPassDescriptor()");

    m_renderPassDescriptor = adoptNS((MTLRenderPassDescriptor *)[MTLRenderPassDescriptor new]);
}

Vector<RefPtr<GPURenderPassColorAttachmentDescriptor>> GPURenderPassDescriptor::colorAttachments()
{
    if (!m_renderPassDescriptor)
        return Vector<RefPtr<GPURenderPassColorAttachmentDescriptor>>();

    Vector<RefPtr<GPURenderPassColorAttachmentDescriptor>> platformColorAttachments;
    platformColorAttachments.append(GPURenderPassColorAttachmentDescriptor::create([[m_renderPassDescriptor colorAttachments] objectAtIndexedSubscript:0]));
    return platformColorAttachments;
}

RefPtr<GPURenderPassDepthAttachmentDescriptor> GPURenderPassDescriptor::depthAttachment()
{
    if (!m_renderPassDescriptor)
        return nullptr;

    if (!m_depthAttachment)
        m_depthAttachment = GPURenderPassDepthAttachmentDescriptor::create([m_renderPassDescriptor depthAttachment]);
    
    return m_depthAttachment;
}

MTLRenderPassDescriptor *GPURenderPassDescriptor::platformRenderPassDescriptor()
{
    return m_renderPassDescriptor.get();
}

} // namespace WebCore

#endif