liquidvr-globe-man-eye-focus-375pxLiquidVR™ is an AMD technology initiative aimed at enabling a fully immersive and comfortable virtual reality experience by creating a new programming model that fully exploits the capabilities of modern GPUs, like AMD Radeon™ products. One of the key technology goals of LiquidVR™ is to reduce unwanted processing latency (reduce motion-to-photon latency) and deliver a consistent frame rate. AMD’s LiquidVR™ is ushering in a new era of visual computing, designed to empower developers and fuel fully immersive VR experiences. The LiquidVR™ SDK is here! Get the scoop and the SDK at GPUOpen.

Spotlight on: Asynchronous Shaders

Asynchronous shaders have the ability to perform compute operations concurrently, i.e. in parallel with rendering tasks. This is a key capability of the new generation of graphics APIs, including Mantle, DirectX® 12, and Vulkan™.  AMD’s Graphics Core Next (GCN) architecture, currently the only architecture to support this functionality, was designed to efficiently process multiple command streams in parallel.

 
 
 
In the context of virtual reality, when rendering images to virtual reality headsets, low latency is critical to avoid nausea and motion sickness. One of the challenges associated with reducing latency is ensuring that the GPU has access to the latest head position information when it is rendering each frame. Even if the information is fresh when rendering begins, it may already be stale by the time the frame completes.

Asynchronous Time Warp addresses this issue by obtaining fresh head tracking information after each frame finishes rendering, using it to warp the frame to appear as if it was rendered from the new viewpoint. This warping makes use of a compute shader, and needs to be executed with high priority to avoid adding latency back into the pipeline. Executing it asynchronously allows latency to be minimized and helps eliminate stuttering, since context switching and pre-emption overhead can be avoided. 

 

 

  • You can start using an AMD graphics cards to accelerate VR content today. This is what you’ll need to get started:

     

    virtual-reality-headset

    STEP 1:

    Choose a VR-capable head-mounted display (HMD):

    *Please contact the VR HMD manufacturer directly for pricing and availability.

     

    virual-reality-graphics-card-product

    STEP 2:

    Select a VR-capable AMD product

    A range of AMD Radeon™ graphics cards are designed to work with head-mounted displays (HMDs) from different suppliers. See the Support section for more details.

    Shop graphics products.

  • The LiquidVR™ SDK is here! Get the scoop and the SDK at GPUOpen. The LiquidVR SDK is a platform designed to simplify and optimize VR development. It unlocks many unique hardware features designed to work seamlessly with headsets and enable beautifully rich and immersive VR experiences.

    The four major features of LiquidVR SDK include:

    Asynchronous Shaders: more efficient GPU resource management

    Asynchronous shading is a powerful LiquidVR feature that helps increase performance and decrease latency by enabling GPU resources to be used significantly more efficiently. Unique to AMD’s Radeon™ GCN hardware architecture, this feature enables the simultaneous execution of compute and graphics shaders, eliminating pipeline bubbles that can be caused by context switching. In the context of VR, this is critical for reducing motion-to-photon latency.

    Affinity Multi-GPU: faster multi-GPU performance

    Affinity Multi-GPU delivers significantly increased stereo rendering performance when using two or more GPUs. By assigning one or more GPUs to each eye and intelligently partitioning workload, Affinity Multi-GPU can cut latency nearly in half while doubling bandwidth and computational resources.

    Latest Data Latch: reduced motion-to-photon latency

    Latest Data Latch enables the GPU to use the latest data ‘just-in-time’, crucial for latency-sensitive VR applications. Minimizing latency for more efficient head tracking, this feature is especially important for accurately transferring sensor input data such as the latest head position into the rendering pipeline.

    Direct-To-Display: seamless plug and play experience

    VR headsets are a new class of display devices that currently lack native support in existing operating systems. This means that a VR headset might be used unintentionally for tasks like boot and desktop configuration. Direct-to-Display is designed to eliminate this type of undesirable behavior, creating a seamless plug-and-play user experience. The LiquidVR SDK also enables direct rendering to the front buffer, significantly reducing latency.

  • VIDEOS

    Virtual is the Next Frontier of Reality at AMD

    AMD Simplified: Virtual Reality

    AMD Simplified: LiquidVR

    Crytek explores the limitless possibilities of Virtual Reality with AMD LiquidVR

    AMD LiquidVR: Latest Data Latch

    AMD and VR: A Game Changer

    AMD Simplified: Asynchronous Shaders

    AMD Asynchronous Shaders Demo

    AMD LiquidVR: Affinity Multi-GPU

    GE takes you on an amazing journey of the human brain with VR

    AMD LiquidVR: Direct-to-Display

    Discover Virtual Reality in Healthcare

    VRLA Winter Expo: Keynote – Opportunities in VR with Roy Taylor

    AMD’s VR Cinema Journey with Baahubali

    VRLA Summer Expo Keynote, Roy Taylor, AMD

    Introducing Sulon Q powered by AMD

    SULON Magic Beans Demo

    View more videos from the AMD LiquidVR technology series here.


  • NEWS

    VRLA Winter Expo Keynote: Opportunities in VR with Roy Taylor
    Roy Taylor, Corporate Vice President of Alliances for AMD, presents the keynote at the Virtual Reality LA Winter Expo

    Our Virtual Reality Future is Bigger Than it Appears
    I was in Los Angeles recently and had a beer with Roy Taylor, a vice-president of the chipmaker AMD, which is making a big play in VR.

    How Virtual Reality Is Revolutionizing Storytelling
    A new paradigm emerges for truly immersive storytelling

    AMD’s Layla Mah on the Future of Advanced Rendering With LiquidVR Podcast
    AMD Chief Architect of VR and Advanced Rendering Layla Mah addressed the technology that will be required to create this new storytelling medium. “We have quite a ways to go … and Moore’s Law might not take us there,” she said.

    Advanced Micro Devices’s Head of Radeon Technologies Group, Raja Koduri, Talks About Their Future
    Raja Koduri recently spoke with select industry analysts about the future of the AMD graphics business and what it means to the RTG.

    VR Architect and Dancing Engineer Layla Mah on Sirius/XM in both Canada and the US
    She is the inventor of LiquidVR for chipmaker AMD, a new technology that will counteract the effects of motion sickness in virtual reality systems. We chat with Layla Mah about what causes some people to feel queasy in movie experiences and explore her sense of adventure that has lead her to passions in the real world including ballroom dancing, figure skating, and building robots.

    The Critical Mass of Virtual Reality
    Virtual reality is here — and ready for prime time. The enormous potential of VR has created immense excitement in the computer industry, and computer hardware, software, gaming and entertainment vendors and manufacturers are devoting tremendous resources to be at the forefront of VR development.

    Virtual Reality Gets Real at SMPTE 2015 Technical Conference
    Panelists Discuss the technique and technology that will drive immersive content in the coming decades.

    AMD’s Head of VR Marketing, Sasa Marinkovic, on the Present & Future of VR
    Virtual reality is going to be a really disruptive and transformative technology, changing every aspect of our lives – all the experiences you can imagine are going to be completely transformed.

    In Pursuit Of Presence and True Immersion
    Tremendous advances in graphics technology are making it possible to achieve true immersion with hyper-realistic VR simulations.

    AMD Q&A: Bringing the Virtual World into Reality
    Will Virtual Reality ever deliver? AMD’s Sasa Marinkovic takes CBR through the past, present and future of VR technology.

    AMD Determines That Absolute Immersion In VR Requires 128 Megapixel Display
    AMD explains just how far away from the absolutely immersive VR experience we really are, with numbers.

    Tech Industry Heavyweights Debate the Future of VR at AMD ‘VR Advisory Council’
    AMD demonstrated its commitment to the future of virtual reality during the 2015 E3 Expo by pulling together big name industry executives, content creators and retailers to discuss the practical future of consumer virtual reality. The results were a refreshingly frank, open and encouraging conversation.

    AMD Plans to do for VR What it did for PC Game Development
    PC gaming has gone from strength to strength over the last few years. One of the prime catalysts of this has been AMD.

    AMD Breaks New Ground With the LiquidVR SDK
    Starting from the top with AMD’s Latest Data Latch feature it’s clear that AMD understands the importance of latency to VR applications.

    First Rule of VR: Don’t Break The Presence
    Virtual reality is poised to fundamentally transform personal entertainment as we know it, potentially delivering a long-term impact that may exceed today’s most “disruptive” new technologies. 

  • AMD is currently enabling key technology partners to implement LiquidVR in their engines and their own SDKs.

    All AMD Radeon™ GPUs based on the Graphics Core Next (GCN) architecture support the current AMD LiquidVR feature set. However, the minimum performance requirements required for the best VR experience will vary between different head-mounted display (HMD)/content platforms.

    The following AMD Radeon™ graphics products are recommended for use with the Oculus Rift:

    • AMD Radeon™ R9 Fury Series
    • AMD Radeon™ R9 Nano GPU
    • AMD Radeon™ R9 390 Series
    • AMD Radeon™ R9 295X2 GPU
    • AMD Radeon™ R9 290 Series.

    The following AMD Radeon™ graphics products are recommended for use with the HTC Vive Consumer Edition:

    • AMD Radeon™ R9 Fury Series
    • AMD Radeon™ R9 Nano GPU
    • AMD Radeon™ R9 390 Series
    • AMD Radeon™ R9 295X2 GPU
    • AMD Radeon™ R9 290 Series

  • AMD LiquidVR™ Technology Wins Prestigious Lumiere Award

    AMD LiquidVR™ technology was recognized with the prestigious Lumiere Award by the Advanced Imaging Society for innovation in entertainment technology at the 7th Annual Technology and New Product Awards Luncheon at the Paramount Pictures Studios on the Paramount Lot in Hollywood, California. The Lumiere Award recognizes new technologies and products in the marketplace that are driving the creative industry forward. Read more here.

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