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| author | cosmic-linden <111533034+cosmic-linden@users.noreply.github.com> | 2024-07-02 14:27:52 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-07-02 14:27:52 -0700 |
| commit | 51b329cc4766a462d48e52fb38db4efa683725cd (patch) | |
| tree | 1c49fca34dc854c3ec322005af0d490c57314916 /doc/testplans | |
| parent | b63065486b6e24a8518f95b95e0a5ca91a3eec28 (diff) | |
| parent | b7ad221f3783ae953a1e0b4eb227950061c48b13 (diff) | |
Merge pull request #1902 from secondlife/v-1847
secondlife/viewer#1847: Add test plan for normal textures on PBR materials
Diffstat (limited to 'doc/testplans')
| -rw-r--r-- | doc/testplans/pbr_materials.md | 12 | ||||
| -rw-r--r-- | doc/testplans/pbr_terrain_appearance.md | 2 |
2 files changed, 13 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. |