After setting material to Blank, cannot set the material to Default or None

[Dan-Linden]

Environment

Second Life Release 7.1.3.7821226606 (64bit)
Release Notes

You are at 66.3, 40.2, 38.8 in Danger! Danger! located at simhost-0dce51b07a43a7deb.agni
SLURL: http://maps.secondlife.com/secondlife/Danger%21%20Danger%21/66/40/39
(global coordinates 261,186.0, 249,640.0, 38.8)
Second Life Server 2024-01-19.7590161929
Release Notes

CPU: AMD Ryzen 9 5980HX with Radeon Graphics (3293.82 MHz)
Memory: 15775 MB
OS Version: Microsoft Windows 10/11 64-bit (Build 22000.2538)
Graphics Card Vendor: ATI Technologies Inc.
Graphics Card: AMD Radeon RX 6800M

Windows Graphics Driver Version: 30.0.15020.1001
OpenGL Version: 4.6.14800 Core Profile Context 21.50.20.01 30.0.15020.1001

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J2C Decoder Version: KDU v7.10.4
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Dullahan: 1.14.0.202310131404
CEF: 118.4.1+g3dd6078+chromium-118.0.5993.54
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February 09 2024 15:11:17

Description

After setting material to Blank, cannot set the material to Default or None

Reproduction steps

Repro 1.

1. Open Inventory, and click the + button, New Material, so there is a Default material in the Inventory.
2. Edit a box and click the Textures tab
3. Choose PBR Metallic Roughness from the Materials dropdown.
4. Click the Choose from inventory button
5. Click the "Blank" button in the Material picker. The object should turn grayish.
6. Click the "Default" button.
   Observed: The box remains gray.
   Expected: The box should revert to plywood.

Repro 2.

1. Open Inventory, and click the + button, New Material, so there is a Default material in the Inventory.
2. Edit a box and click the Textures tab
3. Choose PBR Metallic Roughness from the Materials dropdown.
4. Click the Choose from inventory button
5. Click the "Blank" button in the Material picker. The object should turn grayish.
6. Click the "None" button.
   Observed: The box remains gray.
   Expected: The box should revert to plywood.

Workaround to remove the Material:

• Apply a material (as long as it's not the default Material) from your Inventory.
• Click the "Default" or "None" button.
• Observed: The Material is removed, leaving the plywood texture visible.

[LLGuru]

Tested on the custom build, built from the recent branch release/gltf-maint2
The button "None" works the same way as the button "Default", just clears the effect set by the button "Blank"
The expected behavior of the button Default is not known yet

@Dan-Linden, @AtlasLinden, could you please clarify this?
Thanks

[georgebproductengine]

Failed QA.
Verified on the Second Life Release 7.1.4.8149792635 (64bit) on Win10/OSX in the scope of https://github.com/secondlife/iqa/issues/150.

[Dan-Linden]

@LLGuru We have not defined a Default Material in the viewer. For now, the expected behavior when pressing the Default button in the Material picker is to remove the material. Pressing the None button in the Material picker should also remove the material.

The 7.1.3.7878383867 Emoji viewer can be referenced to see the correct behavior in action.

[brad-linden]

GLTF maint 2 has shipped, bumping back for triage

[LLGuru]

Observed the same behavior: GLTF-Maint-2 works identically to Maint-X

The "Blank" button clears the texture: light-gray for "Textures" and dark-gray for "PBR Metallic Roughness"
The "Default" button returns the initial texture: plywood for both materials

Sending to QA