diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/testplans/pbr_materials.md | 12 | ||||
| -rw-r--r-- | doc/testplans/pbr_terrain_appearance.md | 2 | ||||
| -rw-r--r-- | doc/testplans/pbr_terrain_composition.md | 6 |
3 files changed, 19 insertions, 1 deletions
diff --git a/doc/testplans/pbr_materials.md b/doc/testplans/pbr_materials.md new file mode 100644 index 0000000000..1ef7945b94 --- /dev/null +++ b/doc/testplans/pbr_materials.md @@ -0,0 +1,12 @@ +# PBR Materials + +## KHR Texture Transforms + +Texture repeats for PBR materials on prims are based on the [KHR\_texture\_transform](https://github.com/KhronosGroup/glTF/tree/main/extensions/2.0/Khronos/KHR_texture_transform) spec, and thus should be expected to behave according to the spec. We currently suport offset, rotation, and scale from the spec. texCoord is not currently supported. + +PBR materials should have approximately correct lighting based on the normal texture: + +- With default texture transforms, assuming the prim or model has correct normals and tangents +- With a texture transform applied, especially rotation or negative scale +- With a texture animation applied via `llSetTextureAnim`, especially a rotation animation + - Note: Texture animations are not guaranteed to loop when a PBR texture transform is applied diff --git a/doc/testplans/pbr_terrain_appearance.md b/doc/testplans/pbr_terrain_appearance.md index 770e39204e..eab5b8bf44 100644 --- a/doc/testplans/pbr_terrain_appearance.md +++ b/doc/testplans/pbr_terrain_appearance.md @@ -39,7 +39,7 @@ PBR terrain does not support materials with alpha blend or double-sided. In addi ## PBR Terrain Texture Transforms -Like PBR materials on prims, PBR terrain repeats are based on the [KHR\_texture\_transform](https://github.com/KhronosGroup/glTF/tree/main/extensions/2.0/Khronos/KHR_texture_transform) spec, and thus should be expected to behave the same way. +Like PBR materials on prims, PBR terrain repeats are based on the [KHR\_texture\_transform](https://github.com/KhronosGroup/glTF/tree/main/extensions/2.0/Khronos/KHR_texture_transform) spec, and thus should be expected to behave the same way. We currently suport offset, rotation, and scale from the spec. texCoord is not currently supported. The southwest corner of a region, at z=0, is the UV origin for all texture coordinates of the whole region. Unless an offset is also applied, scale and rotation of the terrain texture transforms are relative to that point. diff --git a/doc/testplans/pbr_terrain_composition.md b/doc/testplans/pbr_terrain_composition.md index c2630d242f..bac0e8662e 100644 --- a/doc/testplans/pbr_terrain_composition.md +++ b/doc/testplans/pbr_terrain_composition.md @@ -89,6 +89,12 @@ If saving the terrain fails for any reason, the terrain should not be updated. Unlike a viewer without PBR terrain support, the new viewer will no longer treat textures with alpha channels as invalid. +### Saving PBR Terrain Texture Transforms + +If "PBR Metallic Roughness" checkbox is checked, a user with saving composition permissions should also be allowed to edit and save PBR texture transforms. + +One texture transform may be set for each material swatch. Setting texture transforms for each individual texture on the material is not currently supported. + ## Graphics Features Texture terrain with transparency is not permitted to be applied in the viewer. |