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For performance reasons, we recommend against downscaling images. This consumes considerably more resources than either displaying images at their native size or upscaling them.
Memory and Performance
The amount of memory available for HTML applications varies by model:
XTx43, XTx44: 512MB for graphics; 512MB for JavaSriptJavaScript
XDx33, XDx34: 256MB for graphics; 512MB for JavaScript
HDx23/LS423/HO523: 256MB for graphics; 128MB for JavaScript
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GPU rasterization is enabled by default in firmware versions 6.2.x and later.
Optimized Image Rendering
The image-rendering CSS property can be assigned the optimizeSpeedBS value. Using this value ensures that Chromium uses lower-quality but faster bilinear filtering when scaling images to 50% or less. We recommend using this value with pages that scale a lot of images at runtime.
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The following table describes which version of web-rendering engine is used in each version of BrightSign firmware:
Rendering Engine | Version | BrightSign FW Versions |
|---|---|---|
Chromium | 87 | 8.5.x, 9.0x |
Chromium | 69 | 8.4.x, 8.3.x, 8.2.x, 8.1.x |
Chromium | 65 | 8.0.x |
Chromium | 45 | 7.1.x, 7.0.x, 6.2.x |
Chromium | 37 | 6.1.x, 6.0.x |
WebKit | -- | 5.1.x, 5.0.x, 4.8.x, 4.7.x |
See this page to download any of the listed Chromium versions.
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BrightAuthor:connected: Select Allow JavaScript console in theChromium Debuggingsection of the DWS andEnable Javascript consolein Presentation tab > State Properties > Options. To disable Chromium debugging, uncheck either of these boxes.
BrightAuthor: In your BrightAuthor presentation, navigate to File > Presentation Properties > HTML and check the Enable Javascript console box. Note that as of BOS 8.5.31 you will need to also set the enable_web_inspector registry key (in the "html" section) to enable the JavaScript console. See the "inspector_server" in roHtmlWidget for more information.
BrightScript: When creating the roHtmlWidget instance, include the inspector_server initialization parameter and specify a port number. Note that as of BOS 8.5.31, you must set the
enable_web_inspectorregistry key to “1” to enable the web inspector for Chromium on the player (if it is set to “0” or nothing, the web inspector is disabled). For example:
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