Add framework for supporting geometrical occluders within rooms, and add support for sphere occluders.
Includes gizmos for editing.
They also work outside the portal system.
This comment is useful to determine the origin of ShaderMaterials
converted from built-in material types (such as CanvasItemMaterial
or SpatialMaterial).
The Godot version is also included in case the shader needs to be
regenerated with a newer engine version.
They could cause a segfault when parsing values with ID "Resource"
as apparently we never set a valid `func` for it.
Fixes crash part of #42115.
(cherry picked from commit f3aaa713d9)
Implement Octahedral Compression for normal/tangent vectors
*Oct32 for uncompressed vectors
*Oct16 for compressed vectors
Reduces vertex size for each attribute by
*Uncompressed: 12 bytes, vec4<float32> -> vec2<unorm16>
*Compressed: 2 bytes, vec4<unorm8> -> vec2<unorm8>
Binormal sign is encoded in the y coordinate of the encoded tangent
Added conversion functions to go from octahedral mapping to cartesian
for normal and tangent vectors
sprite_3d and soft_body meshes write to their vertex buffer memory
directly and need to convert their normals and tangents to the new oct
format before writing
Created a new mesh flag to specify whether a mesh is using octahedral
compression or not
Updated documentation to discuss new flag/defaults
Created shader flags to specify whether octahedral or cartesian vectors
are being used
Updated importers to use octahedral representation as the default format
for importing meshes
Updated ShaderGLES2 to support 64 bit version codes as we hit the limit
of the 32-bit integer that was previously used as a bitset to store
enabled/disabled flags
This prevents setting too large values and crashing the editor.
Very low values are also no longer allowed since they are generally
not detailed enough to represent complex gradients, leading to confusion.
(cherry picked from commit 2c7813385d)
Clean: remove duplicate and interior vertices (uses Bullet algorithm)
Simplify: modify the geometry for further simplification (uses VHACD
algorithm)
In the editor, single convex hull now uses the clean option.
Added a new editor entry to create a simplified convex hull, can be
useful for creating convex hull from highly tessellated triangle meshes.
Specific change for 3.x:
Add support for Vector<Vector3> and PoolVector<Vector3> in the convex hull generator.
The CylinderMesh generation code handles this special case and
avoids generating the top and bottom faces if their radius is equal
to 0. This improves performance by reducing the number of vertices
to draw.
If both values are set to 0, nothing will be visible but the mesh
generation will still succeed.
This also improves the CylinderMesh class documentation.
(cherry picked from commit b4ed84ba2b)
Regression fix: update_exports is tool only and should be used only in
the editor, otherwise it can cause export variable overrides from
instances to be discarded in favor of the parent's value.
(cherry picked from commit f1587c8a7d)
A value of 0 rings is valid and results in a non-subdivided cylinder.
Compared to the previous lowest allowed value (1), a value of 0 halves
the triangle count in any cylinder.
This backports the improved RayCast debug drawing functionality
from the `master` branch.
`ArrayMesh.clear_surfaces()` was also backported from the `master`
branch and exposed because the new debug drawing code requires it.
1. Backport sub-resource cache fixes from master.
Uses a cache by index to keep sub resource indices consistent.
2. The subindex within Resource wasn't synchronized with the path stored in cache when saving a packed scene. It could cause
sub-resources to be swapped when loading the same packed scene in
the same session.
Now the subindex in Resource reflects the sub-resource path in cache,
making saving and loading sub-resources consistent.
Co-authored-by: latorril <latorril@gmail.com>
