[TRACKER] BaseMaterial3D (StandardMaterial3D + ORMMaterial3D) issues

[Calinou]

This is a tracker issue for the default 3D material implementation in Godot 4.0 (formerly SpatialMaterial). BaseMaterial3D provides StandardMaterial3D and ORMMaterial3D.

This tracker only tracks issues in the master branch, not 3.x.

Bugs

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1. Clearcoat effect on materials is too subtle #14403
   bug confirmed topic:3d topic:rendering +4
2. Vulkan: StandardMaterial3D render_priority has no effect #48123
   bug regression topic:3d topic:rendering +4
3. Vulkan: StandardMaterial3D specular modes are off by one #49841
   bug regression topic:3d topic:rendering +4
4. Vulkan: Depth prepass does not respect cull mode #50124
   bug regression topic:3d topic:rendering +4
5. Vulkan: ORMMaterial3D has a redundant Ambient Occlusion section #50231
   archived bug topic:3d topic:rendering +4
6. Vulkan: ORMMaterial3D has no way to adjust metallic specular (unlike StandardMaterial3D) #50232
   discussion enhancement topic:3d topic:rendering +4
7. Vulkan: Enabling subsurface scattering on BaseMaterial3D spams error in output console #53444
   bug topic:3d topic:rendering +3
8. Vulkan: Light specular lobes can be visible on smooth-shaded surfaces facing away from the light #55161
   archived discussion topic:3d topic:rendering +4
9. Vulkan: BaseMaterial3D Anisotropy does not work and results in a shader compilation error if Normal Map is disabled #55771
   bug topic:3d topic:rendering +3
10. Vulkan: Alpha scissor/test material has pixel Z-order issues #56008
    bug topic:3d topic:rendering +3
11. Vulkan: StandardMaterial3D's Disable Ambient Light property has no effect #56332
    bug confirmed regression topic:3d topic:rendering +5
12. Vulkan: Standard/ORM Material Triplanar breaks with animation #56574
    bug confirmed topic:3d topic:rendering +4
13. Vulkan: Transparency pipeline has z-order issues #63675
    bug regression topic:3d topic:rendering +4
14. Vulkan: StandardMaterial3D with any transparency does not cast shadows #61730
    bug topic:3d topic:rendering +3

Missing features compared to 3.x's SpatialMaterial

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1. Vulkan: "Mirrored Repeat" option for BaseMaterial3D missing #51625
   confirmed regression topic:3d topic:rendering +4

Proposals

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1. Add rotation of UVs to StandardMaterial3D godot-proposals#1230
   archived topic:3d topic:rendering +3
2. Add a random rotation option to StandardMaterial3D option for tiling textures godot-proposals#1242
   topic:3d topic:rendering +2
3. Add self-shadowing to parallax occlusion mapping in StandardMaterial3D godot-proposals#1843
   topic:3d topic:rendering +2
4. Add a way to combine PBR maps into an ORM texture for use in ORMMaterial3D godot-proposals#2316
   topic:3d topic:editor +2
5. Add a project setting to control BaseMaterial3D parallax mapping quality in a global manner godot-proposals#2455
   performance topic:3d topic:rendering +3
6. Allow StandardMaterial3D Proximity Fade to fade surfaces when they are far away from other solid surfaces godot-proposals#3021
   topic:3d topic:rendering +2
7. Add a Detail Scale property to BaseMaterial3D godot-proposals#3499
   topic:3d topic:rendering +2

[TokisanGames]

Shouldn't these issues be on the GD4 roadmap? Also some of them are out of date, eg #56008 which has been fixed. And here's a new one: #63675