I went to the NVIDIA briefing on Pascal generation graphic technology that further advanced VR compatibility, including GeForce GTX 1080

New graphic board adopting Pascal architecture "GeForce GTX 1080"NVIDIA has held a briefing on GPU technology of Pascal architecture for press in Tokyo. There, it shows a lot of graphic technology that has evolved greatly in the Vascally supported Pascal generation.

GTX 1080 graphics card | GeForce
https://images.nvidia.com/graphics-cards/geforce/pascal/jp/

Arrived at Akasaka Garden City where press briefing was held.


The venue is like this.


A souvenir on the desk.


As a 10XX generation GPU, "10" was inscribed "Omusubyu" was.


It is Nick Stam (NVIDIA's technical marketing director) to explain.


Today 's theme is roughly divided into 4 themes. "ART FORM" of game capture, "sound" realizing more realistic VR, "new king" GTX 1080, and "new technology" realizing efficient high-speed rendering


First, from the new game capture function. There are an increasing number of fans enjoying capture (screenshot) of the game world.


As GPU performance improves, game capture has reached the level of art no longer.


I was born to take a perfect screenshot using the game capture tool "Ansel"


In Ansel, it is possible to take screenshots freely from your favorite position after stopping the "time" of the game.


You can capture the moment of battle against enemies from various angles, from different perspectives.


In addition, Ansel has various effect functions.


You can easily perform image processing, such as changing the scene of the day to dusk.


The resolution that can be captured by Ansel is amazing 4.5 gigapixels (4.5 billion pixels)


It is also possible to enlarge and cut out a part of the scene.


Ansel realizes ultra-high resolution of 4,500,000 pixels by connecting 3,600 tiled images. It is said that the quality of printing level is realized by this.


This is a screenshot cut out at 38 meters by 9 meters. The pixel density is 100 dpi, and the file size of 4.5 billion pixels is 1.5 GB.


CUDA technology is used for fast image stitching. Seamless joining without breakdown is possible.


There are many effect functions that can be used.


It is also possible to make 360 ​​degree photo. The 360-degree panoramic image that was shot is a dedicated viewer'sNVIDIA VR ViewerNot only can you enjoy it with Google Cardboard, Samsung's Gear VR, etc.


Ansel's demonstration started with that.


Stop the time at a certain moment ... ...


It is also possible to take a picture of a bird's-eye view as if you moved the place or flying up to the sky like a drone.


You can easily zoom in / out and roll, and you can take your favorite pictures with a number of effects.


Ancel is not just about Pascal architecture, it can be used with NVIDIA graphics board of GTX 600 series or higher.


A corresponding game will also appear one after another.


Game capture seems to be increasingly fun.




The next theme is an element to create more realistic VR. For reality VR, it is necessary to appeal to the five senses, not only high-quality images, but also movement that conforms to realistic sounds, tactile senses, physical laws.


Audio is important.


It was developed to realize a more realistic sound "NVIDIA VRWorks Audio". With conventional VR content, it only reproduced the direct sound from the sound source.


However, in the real world, sounds are reflected, wrapped around and absorbed. According to VRWorks Audio, the properties of these sounds are accurately reproduced by simulation.


In addition, high reality can be obtained by accurately reproducing physical behaviors in fine drawing such as movement of liquid, destruction, explosion, movement of hair and flapping of clothes by simulation.


VRWorks is provided to developers as a module.


Game content fully utilizing VRWorks "VR FunhouseThe demonstration starts.


A game in which a flying water balloon is cut with a sword. Balloon cracking and liquid splashing from inside are expressed not only as video and sound but also as tactile sense using vibration.


VR Funhouse will be released free of charge at Steam VR soon.


There are 600 companies incorporating VRWorks as of November 2015, and there are hundreds of additional companies at the time of article creation.


The third theme is a new graphic board waiting for you "GeForce GTX 1080"


Mr. Nick who got the GTX 1080.


Due to the Pascal architecture, various technical advances are being made.


What, professional high end model performance beyond TITAN X.


GTX 1080 is a "new king" reigning at the very top. According to Mr. Nick, GTX 1080 is roughly 25% faster than TITAN X and 70% faster than GTX 980.


game"ParagonDemonstration.


The texture is like this.


This is not pre-rendering but real-time rendered video.



"The quality of the Pascal generation, developers and users should be felt," Nick said.


GTX 1080 is equipped with 8 GB of GDDR 5 X memory. The conventional reference model has been renamed to "Founders Edition". Founders Edition was released on 27th May 2016, and after a few weeks thereafter, an original model will be coming out from a third party.


The middle range model GTX 1070 will be released on June 10, 2016 a little behind the GTX 1080.


Both GTX 1080/1070 will be released from NVIDIA genuine Founders Edition, but unlike in the past, as long as the GTX 1080/1070 series is on the market, the Founders Edition will continue to be released.


The appearance of full metal, silent specification of 33 dBA.


The heat sink inside the case looks like this.


Followed by a description of the Pascal architecture.


GP104 manufactured with the 16 nm FinFET process has 7.2 billion transistors. Compared to the Maxwell generation, the base clock is significantly improved to 1.61 GHz (1.73 GHz at boost). The transfer speed of 256-bit GDDR 5X memory has reached 10 Gbps.


We have succeeded in raising the circuit path to 1733 MHz or more by accumulating detailed optimization called "Crafted technique".


GDDR 5X was developed jointly with Micron. It boasts 1.7 times bandwidth compared to GDDR5.


Two types of memory compression technology are also added. The band can be effectively used as the compression ratio increases.


Comparison of compression.


Maxwell on the left and Pascal on the right. Purple indicates a compressible range.


Pascal can save the band in the main game.


The bandwidth of DRAM is 1.4 times, compression effect is 1.2 times, 1.4 × 1.2 = 1.7 times efficiency has been achieved.


In the geometry engine "Simultaeous Multi-Projection (SMP: simultaneous multi-projection)Function has been added.


Consider a case where a solid is drawn in 2D.


In the angle from the front, the three-dimensional object should be projected on the plane like this.


When configuring a multi-display in order to see a wider range ......


If one long viewport is taken from the center point, both sides are delayed and it is strange.


For SMP, increase the number of viewpoints and respond.



Furthermore, in the case of VR, there are two viewpoints with two eyes.


You must also consider the distortion of the intervening lens.


Also, there is also a disadvantage that drawing peripheral videos which should not enter the field of vision is originally rendered.


So, as you bend the lens, it has been changed not to render unnecessary drawing around.


He said that he was able to realize a more natural visual field more efficiently.



In addition, we do not draw two eyes independently two times, but eliminate waste with a single pass.


SMP demo. For SMP off, VR video of about 60 FPS ...


SMP on to 90 FPS.


Although 2D is comfortable 60 FPS, it is not enough for VR, it is about 90 FPS required. It seems that SMP is very effective for VR contents.


About Async Compute.


The top is Maxwell and the bottom is Pascal.


In the past, graphics and others were statically divided, and there was a need to wait in the idle state even after the graphic (yellow green) finished processing first.


On the other hand, in Pascal, when the graphic has finished processing earlier, it is said that the overall processing speed has been increased by turning it to compute processing.


If a task with a higher priority comes, the interrupt prevention function "Preemption" has also been improved. By switching drawing threads, Maxwell could not do it on a per-command basis, whereas in Pascal it can be done on a pixel-by-pixel basis.


With the improvement of the architecture and process, with the GTX 980 ratio, the GTX 1080 realized 1.7 times the game nature and 2.7 times the VR performance.


HDR support is also progressing.


GameStreme which can stream PC games by NVIDIA SHIELD (remote play) also supports HDR.


HDR compatible game is expected to increase more and more.


In Maxwell 's GPU Boost 2.0 the clock pulling rate was constant regardless of the voltage.


Pascal's GPU Boost 3.0 controls the maximum clock for each voltage. It is said that each voltage approaches the theoretical value.


That is why it was a briefing for the contents of the massive press, such as GTX 1080 which improved performance in any way, and "Ansel" a powerful capture tool and technology to enhance the reality of VR.


◆ 2016/05/27 18:25 Additional notes
It turned out that the estimated sales price of GTX 1080 at store front is around 92,000 yen by tax.

GV - N 1080 D 5 X - 8 GD - B: Graphic board with GIGABYTE NVIDIA GEFORCE GTX 1080 | CFD Sales Co., Ltd. CFD Sales INC.
http://www.cfd.co.jp/product/graphics_bord/nvidia-graphics/gv-n1080d5x-8gd-b/release/


Professional oriented | GF-GTX1080-E8GB / FE: NVIDIA GEFORCE GTX 1080 equipped PCI-Express graphic board
http://www.kuroutoshikou.com/product/graphics_bord/nvidia/gf-gtx1080-e8gb_fe/release/