DX11.2 Tiled Resource Pool

左手的ㄟ右手 2021-12-20 04:59 173阅读 0赞

Nvidia white paper :

https://developer.nvidia.com/content/taking-advantage-directx112-tiled-resources

https://developer.nvidia.com/sites/default/files/akamai/gameworks/events/gdc14/GDC\_14\_DirectX%20Advancements%20in%20the%20Many-Core%20Era%20Getting%20the%20Most%20out%20of%20the%20PC%20Platform.pdf

https://developer.nvidia.com/sites/default/files/akamai/gameworks/events/gdc14/GDC\_14\_Real%20Virtual%20Texturing%20-%20Taking%20Advantage%20of%20DirectX%2011.2%20Tiled%20Resources.pdf

http://news.mydrivers.com/1/267/267530.htm

http://v.youku.com/v\_show/id\_XNTc2MzA2MTQw.html

微软借助[一个Demo][Demo]现场演示了DX 11.2中的一个重要特性：Tiled Resources。

开发者可利用Tiled Resources在物理显存及虚拟资源之间建立松散的映射关系——换句话说，可利用规模较小的本地物理显存获得一大坨可用的虚拟空间，从而为游戏中的地形贴图及App界面提供方便。

![DirectX 11.2演示][DirectX 11.2]

除此之外，DX 11.2还支持以下特性：

\- HLSL shader linking  
\- Inbox HLSL compiler  
\- **GPU overlay support**  
\- DirectX tiled resources  
\- **Direct3D low-latency presentation API**  
\- DXGI Trim API and map default buffer  
\- Frame buffer scaling  
\- Multithreading with SurfaceImageSource  
\- Interactive Microsoft DirectX composition of XAML visual elements  
\- Direct2D batching with SurfaceImageSource

微软在视频中称DX 11.2将用于Windows 8.1及下一代主机比如Xbox One。考虑到PS4是定制版FreeBSD/Unix系统，而Wii U已被开除出次世代行列，实际上DX 11.2将由Xbox One独占。

但是索尼爱好者请勿泄气，卡大神的MegaTexturing与DX 11.2的Tiled Resources颇为神似且有实际应用案例，尽管在《Rage》中用得不算特别成功。

卡马克的MegaTexture技术使用预存于硬盘的纹理数据来实现局促空间下应用大纹理数据，这也是《Rage》一作占用20多GB磁盘空间的原因所在：

[![DirectX 11.2演示][DirectX 11.2 1]][DirectX 11.2_DirectX 11.2 1]

对PC玩家来说，传说中的Radeon HD 8000系列会不会因为AMD与微软靠得特别近从而有幸成为市面上首批DX 11.2示范卡？

http://msdn.microsoft.com/zh-cn/library/dn458996(v=vs.85).aspx

This section contains functions that a Windows Display Driver Model (WDDM) 1.3 and later user-mode display driver must implement in order to support the use and manipulation of tiled resources.

For more info, see [Tiled resource support][].

## In this section ##

<table> 
 <tbody> 
 <tr> 
 <th>Topic</th> 
 <th>Description</th> 
 </tr> 
 <tr> 
 <td> <a href="http://msdn.microsoft.com/zh-cn/library/dn458984%28v=vs.85%29.aspx" rel="nofollow">CheckMultisampleQualityLevels(D3D11_2)</a> </td> 
 <td> Retrieves the number of quality levels that the device supports for the specified number of samples. Supported </td> 
 </tr> 
 <tr> 
 <td> <a href="http://msdn.microsoft.com/zh-cn/library/dn458985%28v=vs.85%29.aspx" rel="nofollow">CopyTileMappings</a> </td> 
 <td> Copies mappings from a source tiled resource to a destination tiled resource. </td> 
 </tr> 
 <tr> 
 <td> <a href="http://msdn.microsoft.com/zh-cn/library/dn458986%28v=vs.85%29.aspx" rel="nofollow">CopyTiles</a> </td> 
 <td> Copies tiles from buffer to tiled resource or vice versa. </td> 
 </tr> 
 <tr> 
 <td> <a href="http://msdn.microsoft.com/zh-cn/library/dn458992%28v=vs.85%29.aspx" rel="nofollow">GetMipPacking</a> </td> 
 <td> For a given tiled resource, returns how many mips are packed, and how many tiles are needed to store all the packed mips. </td> 
 </tr> 
 <tr> 
 <td> <a href="http://msdn.microsoft.com/zh-cn/library/dn458993%28v=vs.85%29.aspx" rel="nofollow">RelocateDeviceFuncs(D3D11_2)</a> </td> 
 <td> Notifies the user-mode display driver about the new location of the driver function table. Implemented by WDDM 1.3 and later user-mode display drivers. </td> 
 </tr> 
 <tr> 
 <td> <a href="http://msdn.microsoft.com/zh-cn/library/dn458994%28v=vs.85%29.aspx" rel="nofollow">ResizeTilePool</a> </td> 
 <td> Resizes a tile pool. </td> 
 </tr> 
 <tr> 
 <td> <a href="http://msdn.microsoft.com/zh-cn/library/dn458995%28v=vs.85%29.aspx" rel="nofollow">TiledResourceBarrier</a> </td> 
 <td> Specifies a data access ordering constraint between multiple tiled resources. For more info about this constraint, see Remarks. </td> 
 </tr> 
 <tr> 
 <td> <a href="http://msdn.microsoft.com/zh-cn/library/dn458998%28v=vs.85%29.aspx" rel="nofollow">UpdateTileMappings</a> </td> 
 <td> Updates mappings of tile locations in tiled resources to memory locations in a tile pool. </td> 
 </tr> 
 <tr> 
 <td> <a href="http://msdn.microsoft.com/zh-cn/library/dn459001%28v=vs.85%29.aspx" rel="nofollow">UpdateTiles</a> </td> 
 <td> Updates tiles by copying from app memory to the tiled resource. </td> 
 </tr> 
 </tbody> 
</table>

转载于:https://www.cnblogs.com/kylegui/p/3845420.html

[Demo]: http://v.youku.com/v_show/id_XNTc2MzA2MTQw.html
[DirectX 11.2]: /images/20211220/348c85235d2b4054b0b1f1acb96b41b8.png
[DirectX 11.2 1]: http://img1.mydrivers.com/img/20130628/s_afd19a98ac154d7593a3713ac525185d.jpg
[DirectX 11.2_DirectX 11.2 1]: /images/20211220/4bd25b71492e4829844fcb3e51fb1eee.png
[Tiled resource support]: http://msdn.microsoft.com/zh-cn/library/dn458997%28v=vs.85%29.aspx