![]() ![]() The Screenshot Comparison browser is where all your screenshot comparisons will populate, and as you introduce new ones or if a screenshot comparison fails, this view is where you'll take care The default settings of the Functional Screenshot Test Actor will be used for each instance placed in the level. If you're explicitly testing rendering functionality, the Rendering node should be used instead, otherwise, Node can be useful to disable noise in the shot and buffers that aren't necessarily needed. When capturing gameplay differences, the Gameplay The Default Screenshot Options node for gameplay and rendering are useful to set the default Tolerance level for the Screenshot Test Actor. Should consider setting to default tolerances when capturing gameplay or rendering functionality for comparison. ![]() There are two useful Blueprint nodes you can One thing to keep in mind is that you can customize the screenshot settings that are applied when capturing the screenshot. This can be setīy going to Edit > Editor Preferences > Automation > Screenshots.īlueprint example used to capture a screenshot during another Functional Test. In the Editor Preferences, the default resolution of all captured screenshots for comparison can be set for all placed Functional Screenshot Test Actors. If this is enabled, the luminance of the scene is all that will be compared for the screenshot test. ![]() If this is enabled, neighboring pixels will be searched for the expected pixel as what to what may have happened, such as the pixel shifting a little bit. Depending on how pixels were colored on triangle edges, there may be a few percent of the pixels that fall outside of the tolerance levels. These chunks will be compared to the local error in an attempt to local to locate hot spots of change that are important that otherwise would be ignored by the global error.Īfter you've accounted for color tolerance changes, you now need to control for the total acceptable error. Unlike the Maximum Global Error, the Maximum Local Error works by focusing on a smaller subset of the image. The maximum tolerance brightness value to accept.Īfter you've accounted for color tolerance changes, you now need to control for local acceptable error. The minimum tolerance brightness value to accept. Set values for any of the RGBA channels separately. Generally, this is necessary as modern rendering techniques tend to introduce noise constantly to hide aliasing. By default, Low is used because there's some constant variability in every pixel's color introduced by Temporal Anti-Aliasing.įor each channel and brightness levels, you can control a region where the colors are found to be essentially the same. This is useful if you're trying to build a test for a specific GBuffer that may be harder to tell if errors are introduced. The delay before the screenshot will be taken.ĭisables Anti-aliasing, Motion Blur, Screen Space Reflections, Eye Adaptation (Auto-Exposure), and Contact Shadows because these features contribute a lot of noise in the final rendered image if you're explicitly looking for changes.Īllows you to screenshot a buffer other than the default final lit scene image. If none is provided, the default resolution of the platform setup in the Automation Settings will be used. The desired resolution of the screenshot. ![]()
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