mirror of
https://github.com/blender/blender
synced 2026-10-25 03:07:01 +03:00
7847f65137
Legacy texture evaluation falls back to the active tessface UV layer when no UV map is explicitly specified. After active and default UV map state moved to `Mesh`, legacy tessface conversion still tried to copy the corresponding indices from corner `CustomData`. This left the generated `CD_MTFACE` layers using index 0, so textures with an empty UV map name could sample the wrong UV map. Resolve the active and default UV map names from the mesh when generating legacy tessface data, restoring the previous implicit active-UV fallback. Pull Request: https://projects.blender.org/blender/blender/pulls/161347
30 lines
859 B
Python
30 lines
859 B
Python
# SPDX-FileCopyrightText: 2026 Blender Authors
|
|
#
|
|
# SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
import bpy
|
|
import sys
|
|
|
|
|
|
def main():
|
|
bpy.context.scene.frame_set(1)
|
|
depsgraph = bpy.context.evaluated_depsgraph_get()
|
|
depsgraph.update()
|
|
|
|
obj = bpy.data.objects["testParticleLegacyTextureUV"].evaluated_get(depsgraph)
|
|
particles = obj.particle_systems[0].particles
|
|
existing_particles = sum(1 for particle in particles if particle.is_exist)
|
|
|
|
if len(particles) != 1:
|
|
print(f"Expected exactly one deterministic parent hair particle, got {len(particles)}")
|
|
sys.exit(1)
|
|
if existing_particles != 1:
|
|
print(
|
|
"Expected the empty legacy texture UV name to use the active UV map, "
|
|
f"got {existing_particles} existing particles"
|
|
)
|
|
sys.exit(1)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|