User manual

Screen Resolution
If the Horizon Administrator congures a remote desktop with the correct amount of video RAM, the Web
client can resize a remote desktop to match the size of the browser window. The default conguration is
36MB of video RAM, which is comfortably more than minimum requirement of 16MB if you are not using
3D applications.
If you use a browser or Chrome device that has a high pixel density resolution, such as a Macbook with
Retina Display or a Google Chromebook Pixel, you can set the remote desktop or application to use that
resolution. Turn on the High Resolution Mode option in the Seings window, which is available from the
sidebar. (This option appears in the Seings window only if you are using a high-resolution display.)
To use the 3D rendering feature, you must allocate sucient VRAM for each remote desktop.
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The software-accelerated graphics feature, available with vSphere 5.0 or later, allows you to use 3D
applications such as Windows Aero themes or Google Earth. This features requires 64MB to 128MB of
VRAM.
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The shared hardware-accelerated graphics feature (vSGA), available with vSphere 5.1 or later, allows
you to use 3D applications for design, modeling, and multimedia. This feature requires 64MB to 512MB
of VRAM. The default is 96MB.
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The dedicated hardware-accelerated graphics feature (vDGA), available with vSphere 5.5 or later,
dedicates a single physical GPU (graphical processing unit) on an ESXi host to a single virtual machine.
Use this feature if you require high-end, hardware-accelerated workstation graphics. This feature
requires 64MB to 512MB of VRAM. The default is 96MB.
When 3D rendering is enabled, the maximum number of monitors is 1 and the maximum resolution is 3840
x 2160.
Similarly, if you use a browser on a device that has a high pixel density resolution, such as a Macbook with
Retina Display or a Google Chromebook Pixel, you must allocate sucient VRAM for each remote desktop.
I Estimating the amount of VRAM you need for the VMware Blast display protocol is similar to
estimating how much VRAM is required for the PCoIP display protocol. For guidelines, see the section
"RAM Sizing for Specic Monitor Congurations When Using PCoIP" of the topic "Estimating Memory
Requirements for Virtual Desktops," in the View Architecture Planning document.
H.264 Decoding
If you use a Chrome browser, you can allow H.264 decoding in the HTML Access client for remote desktop
and application sessions.
When you allow H.264 decoding, the HTML Access client uses H.264 decoding if the agent supports H.264
encoding. If the agent does not support H.264 encoding, the HTML Access client uses JPEG/PNG decoding.
If you are connected to a remote desktop or application, you can allow H.264 decoding by turning on the
Allow H.264 decoding option in the Seings window, which is available from the sidebar. You must
disconnect and reconnect to the remote desktop or application for the new seing to take eect.
If you are not connected to a remote desktop or application, you can click the  toolbar buon in the
upper-right corner of the desktop and application selector screen and turn on the Allow H.264 decoding
option in the Seings window. The new seing takes eect for any sessions that are connected after you
change the seing.
Chapter 3 Using a Remote Desktop or Application
VMware, Inc. 35