Comments (10)
kimkulling
commented on June 1, 2024
With the latest master I get the following error message:
100 %ERROR: Failed to load file: No materials remaining
And there is no crash.
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kimkulling
commented on June 1, 2024
So all not used materials get removed correctly from my point of view. There is a noe hierarchy, but no meshes at all. So all not used materials will be removed.
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kimkulling
commented on June 1, 2024
This is just a validation message from the model validation and from ym point of view this is correct.
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stephengold
commented on June 1, 2024
So all not used materials get removed correctly from my point of view. There is a noe hierarchy, but no meshes at all. So all not used materials will be removed.
@kimkulling If no materials are used, and all not-used materials get removed, then all materials should be removed. That won't happen if the post-processing aborts.
This is just a validation message from the model validation and from ym point of view this is correct.
@kimkulling The message came from post-processing, not from model validation.
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kimkulling
commented on June 1, 2024
Which behavior would you expect?
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stephengold
commented on June 1, 2024
For a model with zero meshes, I expect that RRM post-processing should result in a model with zero materials.
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kimkulling
commented on June 1, 2024
Good point, fix is on its way.
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stephengold
commented on June 1, 2024
After the fix (GIT commit 3990ec8) loading the test model results in a segmentation violation:
$ bin/assimpd info ~/Downloads/Running.gltf -rrm
param = -rrm
Launching asset import ... OK
Validating postprocessing flags ... OK
100 %Importing file ... OK
import took approx. 0.02072 seconds
AddressSanitizer:DEADLYSIGNAL
=================================================================
==20768==ERROR: AddressSanitizer: SEGV on unknown address 0x00000000000c (pc 0x7f4fbae02bf2 bp 0x7fff99fe80a0 sp 0x7fff99fe7fa0 T0)
==20768==The signal is caused by a READ memory access.
==20768==Hint: address points to the zero page.
#0 0x7f4fbae02bf2 in Assimp::Importer::GetMemoryRequirements(aiMemoryInfo&) const /home/sgold/NetBeansProjects/ext/assimp/code/Common/Importer.cpp:1271
#1 0x55936c1bea63 in Assimp_Info(char const* const*, unsigned int) /home/sgold/NetBeansProjects/ext/assimp/tools/assimp_cmd/Info.cpp:352
#2 0x55936c1b3d61 in main /home/sgold/NetBeansProjects/ext/assimp/tools/assimp_cmd/Main.cpp:222
#3 0x7f4fba322d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
#4 0x7f4fba322e3f in __libc_start_main_impl ../csu/libc-start.c:392
#5 0x55936c18b564 in _start (/home/sgold/NetBeansProjects/ext/assimp/build/bin/assimpd+0x17564)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/sgold/NetBeansProjects/ext/assimp/code/Common/Importer.cpp:1271 in Assimp::Importer::GetMemoryRequirements(aiMemoryInfo&) const
==20768==ABORTING
$ bin/assimpd version
------------------------------------------------------
Open Asset Import Library ("Assimp", https://github.com/assimp/assimp)
-- Commandline toolchain --
------------------------------------------------------
Version 5.3 -debug -shared -st (GIT commit 3990ec80)
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stephengold
commented on June 1, 2024
Perhaps the fix doesn't update mNumMaterials correctly?
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