Horizon Client can resize the remote desktop to match the size of the browser window. To use this feature, a Horizon administrator must configure the remote desktop to have the correct amount of video RAM (VRAM). The default VRAM configuration is 36 MB. If you are not using 3D applications, the minimum VRAM requirement is 16 MB.

If you use a Chromebook device that has a high pixel density resolution, such as a Google Chromebook Pixel, you can set the remote desktop or published application to use that resolution. Turn on the High Resolution Mode option in the Settings window. This option appears in the Settings window only if you are using a high-resolution display, or a normal display that uses a scale that is greater than 100 percent, and an administrator has not disabled the feature.

For information about disabling the High Resolution Mode feature, see Using the Google Admin Console to Configure Enrolled Chromebook Devices .

The High Resolution Mode feature cannot change the resolution for an active remote session. You must log out and log in again to make the feature take effect.

To use the 3D rendering feature, you must allocate sufficient VRAM for each remote desktop.

  • The software-accelerated graphics feature, which is available with vSphere 5.0 or later, enables you to use 3D applications, such as Windows Aero themes or Google Earth. This feature requires from 64 MB to 128 MB of VRAM.
  • The shared hardware-accelerated graphics feature (vSGA), which is available with vSphere 5.1 or later, enables you to use 3D applications for design, modeling, and multimedia. This feature requires from 64 MB to 512 MB of VRAM. The default is 96 MB.
  • The dedicated hardware-accelerated graphics feature (vDGA), which is 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 from 64 MB to 512 MB of VRAM. The default is 96 MB.

When 3D rendering is enabled, the maximum number of monitors is one and the maximum resolution is 3840 x 2160.

Similarly, if you use a Chromebook that has a high pixel density resolution, such as a Google Chromebook Pixel, you must allocate sufficient VRAM for each remote desktop.

Important: Estimating the amount of VRAM that 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 "Estimating Memory Requirements for Virtual Desktops" in the Horizon 7 Architecture Planning document.