Memory leak related to the gpu module #119028

New Issue

Damien Picard · 2024-03-03T14:58:49+01:00

Damien Picard commented

2024-03-03 14:58:49 +01:00

System Information
Operating system: Linux-6.5.0-21-generic-x86_64-with-glibc2.38 64 Bits, X11 UI
Graphics card: NVIDIA GeForce RTX 3060 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 545.29.06

Blender Version
Broken: version: 4.2.0 Alpha, branch: main, commit date: 2024-03-02 23:40, hash: 62bb346af911
Broken: version: 3.3.15, branch: master, commit date: 2024-01-15 13:02, hash: ec91541af1fa
Worked: version: 3.2.0

Short description of error
Under specific circumstances probably related to the gpu module and property updates, a memory leak occurs.

Exact steps for others to reproduce the error

Start Blender with the --debug-memory option.
Install the attached add-on stub.
Enable it in the User Preferences.
Quit Blender
This message is displayed in the terminal:

Error: Not freed memory blocks: 4, total unfreed memory 0.001808 MB
GLShader len: 1648 0x7f966df95c40
GLShaderInterface len: 248 0x7f965badc040
GLShaderInterface len: 0 0x7f967f5cfa78
name_buffer len: 0 0x7f967f5cfab8

Without --debug-memory, only the first line appears.
The error does not appear when the script is run in a text editor.
This was originally reported in blender/blender-addons#105201 with the Sun Position add-on.

Full script:

bl_info = {
    "name": "Memory Leak Debug",
    "version": (0, 0, 1),
    "blender": (2, 80, 0),
    "category": "Debug",
}

import bpy
import gpu

shader_info = gpu.types.GPUShaderCreateInfo()
shader_info.vertex_source('void main() {}')
shader_info.fragment_source('void main() {}')

shader = gpu.shader.create_from_info(shader_info)
del shader_info

def test_update(self, context):
    pass

class TestProperties(bpy.types.PropertyGroup):
    test: bpy.props.BoolProperty(name="Test", update=test_update)

def register():
    bpy.utils.register_class(TestProperties)

def unregister():
    bpy.utils.unregister_class(TestProperties)

**System Information** Operating system: Linux-6.5.0-21-generic-x86_64-with-glibc2.38 64 Bits, X11 UI Graphics card: NVIDIA GeForce RTX 3060 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 545.29.06 **Blender Version** Broken: version: 4.2.0 Alpha, branch: main, commit date: 2024-03-02 23:40, hash: `62bb346af911` Broken: version: 3.3.15, branch: master, commit date: 2024-01-15 13:02, hash: `ec91541af1fa` Worked: version: 3.2.0 **Short description of error** Under specific circumstances probably related to the `gpu` module and property updates, a memory leak occurs. **Exact steps for others to reproduce the error** - Start Blender with the `--debug-memory` option. - Install the attached add-on stub. - Enable it in the User Preferences. - Quit Blender - This message is displayed in the terminal: ``` Error: Not freed memory blocks: 4, total unfreed memory 0.001808 MB GLShader len: 1648 0x7f966df95c40 GLShaderInterface len: 248 0x7f965badc040 GLShaderInterface len: 0 0x7f967f5cfa78 name_buffer len: 0 0x7f967f5cfab8 ``` Without `--debug-memory`, only the first line appears. The error does not appear when the script is run in a text editor. This was originally reported in blender/blender-addons#105201 with the Sun Position add-on. Full script: ```python bl_info = { "name": "Memory Leak Debug", "version": (0, 0, 1), "blender": (2, 80, 0), "category": "Debug", } import bpy import gpu shader_info = gpu.types.GPUShaderCreateInfo() shader_info.vertex_source('void main() {}') shader_info.fragment_source('void main() {}') shader = gpu.shader.create_from_info(shader_info) del shader_info def test_update(self, context): pass class TestProperties(bpy.types.PropertyGroup): test: bpy.props.BoolProperty(name="Test", update=test_update) def register(): bpy.utils.register_class(TestProperties) def unregister(): bpy.utils.unregister_class(TestProperties) ```

memory_leak_debug.py

636 B

Damien Picard added the

labels 2024-03-03 14:58:50 +01:00

Pratik Borhade commented

2024-03-04 05:12:02 +01:00