The killer of Windows 10!What did DirectX 12 bring

2025-01-28 01:32:37|Myriagame |source：minecraft skins

Microsoft's Windows 10 can be released this summer. In addition to the improvement of interfaces and operations, the most exciting part of Win10 is DirectX 12 (hereinafter referred to as DX12).What kind of changes can it bring to us? In order to use DX12 early, what should we make?

For DX12, we are not unfamiliar. Everyone is very impressed with the performance of DX12's performance of DX11, but on the other hand, DX12 is still "familiar strangers" for us.Many people have not yet greeted DX12 preparations. Today, this article will introduce in detail what changes DX12 brings, and which graphics cards and platforms will support DX12.

1. New changes brought by DX12

We all know that Microsoft will bring DX12 in this year's Windows 10 system. It also knows from previous reports and tests that DX12 has improved the underlying hardware efficiency. Multi -threaded support is better and the game performance is stronger.But everyone is still very vague about the complete impression of DX12. What new changes can it bring to us. Will the games using DX12 API have a qualitative improvement in picture quality and performance?

DX12 can be divided into three levels

Just like the previous DirectX specifications, DX12 can actually be divided into multiple feature layers with different functions (Feature Level), but DX12 has one more underlying optimization this time, so the DX12 specification can be regarded as three different levels:

· D3D 12 LOWLEVEL API: This part is actually the most reported part. Compared with the DX11, DX12 has greatly improved the performance of the underlying optimization. This is also the most attractive point of DX12.This is the case for players.

The underlying optimization section includes Low Overhead (low overhead), more control and asynchronous computing (Async Compute). The low overhead is similar to the Mantle optimization proposed by AMD.Driving layer overhead, this part can now be tested using 3DMark's Driver Overhead.

· DX12 Feature Level 12_0: The bottom -up optimization part of the previous one is actually helping DX12 to open up the "meridian" and increase the potential of developers, but those who do not involve the specific move -Feature Level 12_0 This part of the 3D rendering involved in the updated 3D renderingMethods, including Tiled Resources, classified UAV access, bindless, etc. Many of the functions are actually available in DX11.1, but most of the DX11 is T1 level.It is T2 level.

· DX12 advanced feature Feature Level 12_1: Like the previous DX11.1/11.2, DX12 also has the function of the FEATURE Level 12_1 function than Feature Level 12_0, including Volume Tiled Resources and ConservaTive Rasterizati. ON)The grating sequential view (Raster Order Views), etc. These functions are usually optional support, but they can better improve the efficiency of developers or game quality, and at the same time, they also have higher requirements for graphics cards.

The above three parts are the main contents of the DX12 specification, but these are not all the functions of DX12. Do you remember the DX12 black technology that previously exposed?The technology is called Muti-Adapter (multi-graphics adapter), which can combine the GPU of different architectures to render.

A multi-graphics card demonstration was made at the BUILD conference of Microsoft, using two ways: independent display and independent display+set display of 635 frames, respectively.The independent platform score is 39.7fps, and the slight advantage leads the independent platform.(The main reason for the small improvement is that the performance gap between independent display and set display is usually very large. When parallel operations, there will be no nearly double improvement such as CF/SLI. The same is true of LUCID VIRTU technology.)

Another advantage of Muti-Adapter technology is that the utilization rate of GPU video memory under multiple cards is higher. Whether it is CF or SLI technology in the past, DX can only store the memory storage data of one of the graphics cards.At the GTX 980 Ti graphics card dual card SLI, its total memory capacity is 4GB, and its GPU capacity cannot double when multi -card interconnection.Now with Muti-Adapter technology, it can merge all the memory and use it, and the memory capacity can double.(Microsoft's WDDM 2.0 model also supports GPU virtual memory, speculation has something to do with this)

In short, the most important change of Microsoft's DX12 is to bring the underlying hardware optimization. It improves the multi -threaded efficiency and reduces the driver overhead, which is very beneficial for gamers and developers.The 3D rendering technology is also updated in DX12, and on multi -card interconnection, DX12 may become a dark horse. If it is finally supported by AMD, NVIDIA, and Intel coresIt's right.

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