Method UnmapForWriting

trinityal/dx12/Tr2TextureALDx12.cpp:1425–1483

}

void Tr2TextureAL::UnmapForWriting( Tr2RenderContextAL& renderContext )
{
	if( m_mappedScratch == m_writeScratches.end() || !renderContext.IsValid() || !m_mappedRegion.IsValid() )
	{
		return;
	}

	uint64_t requiredSize = 0;
	uint32_t pitch = 0;
	GetRegionSize( m_mappedRegion, pitch, requiredSize );

	m_mappedScratch->scratch->Unmap( 0, nullptr );

	auto texture = GetResourceDx12();
	auto subresource = m_mappedRegion.m_startFace * m_desc.GetTrueMipCount() + m_mappedRegion.m_startMipLevel;
	D3D12_RESOURCE_DESC desc = texture->GetDesc();
	D3D12_PLACED_SUBRESOURCE_FOOTPRINT layout;
	layout.Offset = 0;
	if( m_mappedRegion.HasBox() )
	{
		D3D12_SUBRESOURCE_FOOTPRINT f = { desc.Format, m_mappedRegion.GetWidth(), m_mappedRegion.GetHeight(), m_mappedRegion.GetDepth(), pitch };
		layout.Footprint = f;
	}
	else
	{
		auto mip = m_mappedRegion.m_startMipLevel;
		D3D12_SUBRESOURCE_FOOTPRINT f = { desc.Format, m_desc.GetMipWidth( mip ), m_desc.GetMipHeight( mip ), m_desc.GetMipDepth( mip ), pitch };
		layout.Footprint = f;
	}
	D3D12_TEXTURE_COPY_LOCATION Dst = { texture, D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX, subresource };
	D3D12_TEXTURE_COPY_LOCATION Src = { m_mappedScratch->scratch, D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT, layout };

	renderContext.ResourceBarrierDx12( TrinityALImpl::Transition( texture, m_defaultState, D3D12_RESOURCE_STATE_COPY_DEST ) );
	renderContext.FlushBarriersDx12( texture );

	if( m_mappedRegion.HasBox() )
	{
		D3D12_BOX box = { 0, 0, 0, m_mappedRegion.m_box.GetWidth(), m_mappedRegion.m_box.GetHeight(), m_mappedRegion.m_box.GetDepth() };
		renderContext.m_commandList->CopyTextureRegion(
			&Dst,
			m_mappedRegion.m_box.left,
			m_mappedRegion.m_box.top,
			m_mappedRegion.m_box.front,
			&Src,
			&box );
	}
	else
	{
		renderContext.m_commandList->CopyTextureRegion( &Dst, 0, 0, 0, &Src, nullptr );
	}

	renderContext.ResourceBarrierDx12( TrinityALImpl::Transition( texture, D3D12_RESOURCE_STATE_COPY_DEST, m_defaultState ) );
	FlushBarriersMaybe( *this, renderContext );

	m_mappedScratch->frameIndex = m_owner->GetRecordingFrameNumber();

	m_mappedRegion = Tr2TextureSubresource();
	m_mappedScratch = m_writeScratches.end();