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o3de/Gems/Atom/RPI/Code/Source/RPI.Reflect/Image/Image.cpp

74 lines
2.2 KiB
C++

/*
* Copyright (c) Contributors to the Open 3D Engine Project.
* For complete copyright and license terms please see the LICENSE at the root of this distribution.
*
* SPDX-License-Identifier: Apache-2.0 OR MIT
*
*/
#include <Atom/RPI.Reflect/Image/Image.h>
#include <Atom/RPI.Reflect/Image/ImageAsset.h>
#include <Atom/RHI/Factory.h>
namespace AZ
{
namespace RPI
{
Image::Image()
{
/**
* Image views are persistently initialized on their parent image, and
* shader resource groups hold image view references. If we re-create the image
* view instance entirely, that will not automatically propagate to dependent
* shader resource groups.
*
* Image views remain valid when their host image shuts down and re-initializes
* (it will force a rebuild), so the best course of action is to keep a persistent
* pointer around at all times, and then only initialize the image view once.
*/
auto& factory = RHI::Factory::Get();
m_image = factory.CreateImage();
AZ_Assert(m_image, "Failed to acquire an image instance from the RHI. Is the RHI initialized?");
}
bool Image::IsInitialized() const
{
return m_image->IsInitialized();
}
RHI::Image* Image::GetRHIImage()
{
return m_image.get();
}
const RHI::Image* Image::GetRHIImage() const
{
return m_image.get();
}
const RHI::ImageView* Image::GetImageView() const
{
return m_imageView.get();
}
const RHI::ImageDescriptor& Image::GetDescriptor() const
{
return m_image->GetDescriptor();
}
uint16_t Image::GetMipLevelCount()
{
return m_image->GetDescriptor().m_mipLevels;
}
RHI::ResultCode Image::UpdateImageContents(const RHI::ImageUpdateRequest& request)
{
RHI::ImagePool* imagePool = azrtti_cast<RHI::ImagePool*> (m_image->GetPool());
return imagePool->UpdateImageContents(request);
}
}
}