Transparency test

Purpose

Test the functionality of Transparency in the edit tools and on objects.

Scope

Second Life Viewer 2.7 and higher.

Test Plan

The transparency can be changed to 100% from the edit tools

• Create a cube and change the Transparency to 100% in the Texture tab of the edit tools.
• Deselect the cube then select the cube again.
• Verify the transparency is 100 in the edit tools.

100% transparent triangles are not rendered

• test 1: turn off occlusion culling and compare triangles

1. Create a grid 125 default size spheres, 5 to a side.
2. Enable the Develop menu with ctrl-alt-q
3. Disable Develop menu > Rendering > Object-Object Occlusion.
4. Note the KTris Drawn/fr in the Statistics bar (ctrl-shift-1) > Advanced > Render.
5. Select the 125 spheres and set their transparency to 100%.
6. Note the KTris Drawn/fr
7. Verify the KTris Drawn/fr have decreased. (This is a known bug https://jira.secondlife.com/browse/SH-1073)

• test 2: with occlusion culling on, compare triangles between 90% and 100% transparent

1. Create a grid 125 default size spheres, 5 to a side.
2. Enable the Develop menu with ctrl-alt-q
3. Enable Object-Object Occlusion in Develop menu > Rendering > Object-Object Occlusion.
4. Select the 125 spheres and set their transparency to 90%.
5. Note the KTris Drawn/fr in the Statistics bar (ctrl-shift-1).
6. Select the 125 spheres and set their transparency to 100%.
7. Note the KTris Drawn/fr
8. Verify the KTris Drawn/fr have decreased.

100% Transparent objects are visible when Highlight Transparent is enabled

1. Enable the Advanced menu with ctrl-alt-d.
2. Verify that 100% transparent objects are rendered with a reddish haze when Advanced > Highlighting and Visibility > Highlight Transparent is enabled.

Textures 88% or more transparent allow right-clicks to pass through

1. Make some textures that are 87% transparent and 88% transparent and apply them to objects. (or visit the test at Bug Island 13/89)
2. Attempt to right-click through the objects.
3. Verify you can click through the object with the 88% transparent texture, but cannot click through the object with the 87% transparent texture.

Objects that have a Transparency value of 100% allow right-clicks to pass through

• Note: This is a functionality change in the viewer that supports DOF. Previously, right-clicks would not pass through 100% Transparent objects.

1. Create 2 boxes.
2. Set the Transparency of one box to 99% and the other to 100%
3. Attempt to right-click through the objects.
4. Verify you can click through the object that is 100% transparent, but cannot click through the object that is 99% transparent.