Blender 2.8 assertion failure when using the Knife angle constraint option #55744

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Jesse Yurkovich · 2018-07-04T02:22:57+02:00

Jesse Yurkovich commented

2018-07-04 02:22:57 +02:00

System Information
Windows 10, nVidia Quadro 600

Blender Version
Broken: 2.8 46bdbc6c78
Worked: 2.7x

Short description of error
Assertion triggered in debug build when using the "angle constraint" option for the Knife tool

Note: Release builds seem fine, however, this prevents debugging of blender during normal operation (in the spirit of providing actionable bugs for the alpha/beta milestones etc.) Triage accordingly I suppose...

Exact steps for others to reproduce the error

Start with default scene
Go into Edit mode for the cube
Hit "K" for knife and start making a cut...
Hit "C" to constrain the angle -- assertion failure

Top few lines of the stack trace:

blender.exe!_wassert(const wchar_t * expression, const wchar_t * file_name, unsigned int line_number) Line 444	C++
blender.exe!immBindProgram(unsigned int program, const Gwn_ShaderInterface * shaderface) Line 123	C
blender.exe!immBindBuiltinProgram(GPUBuiltinShader shader_id) Line 39	C
blender.exe!knifetool_draw_angle_snapping(const KnifeTool_OpData * kcd) Line 1013	C
blender.exe!knifetool_draw(const bContext * UNUSED_C, ARegion * UNUSED_ar, void * arg) Line 1059	C
blender.exe!ED_region_draw_cb_draw(const bContext * C, ARegion * ar, int type) Line 276	C
blender.exe!DRW_draw_render_loop_ex(Depsgraph * depsgraph, RenderEngineType * engine_type, ARegion * ar, View3D * v3d, GPUViewport * viewport, const bContext * evil_C) Line 1333	C

stacktrace.txt

**System Information** Windows 10, nVidia Quadro 600 **Blender Version** Broken: 2.8 46bdbc6c78b Worked: 2.7x **Short description of error** Assertion triggered in debug build when using the "angle constraint" option for the Knife tool Note: Release builds seem fine, however, this prevents debugging of blender during normal operation (in the spirit of providing actionable bugs for the alpha/beta milestones etc.) Triage accordingly I suppose... **Exact steps for others to reproduce the error** - Start with default scene - Go into Edit mode for the cube - Hit "K" for knife and start making a cut... - Hit "C" to constrain the angle -- assertion failure Top few lines of the stack trace: ``` blender.exe!_wassert(const wchar_t * expression, const wchar_t * file_name, unsigned int line_number) Line 444 C++ blender.exe!immBindProgram(unsigned int program, const Gwn_ShaderInterface * shaderface) Line 123 C blender.exe!immBindBuiltinProgram(GPUBuiltinShader shader_id) Line 39 C blender.exe!knifetool_draw_angle_snapping(const KnifeTool_OpData * kcd) Line 1013 C blender.exe!knifetool_draw(const bContext * UNUSED_C, ARegion * UNUSED_ar, void * arg) Line 1059 C blender.exe!ED_region_draw_cb_draw(const bContext * C, ARegion * ar, int type) Line 276 C blender.exe!DRW_draw_render_loop_ex(Depsgraph * depsgraph, RenderEngineType * engine_type, ARegion * ar, View3D * v3d, GPUViewport * viewport, const bContext * evil_C) Line 1333 C ``` [stacktrace.txt](https://archive.blender.org/developer/F3858837/stacktrace.txt)

Jesse Yurkovich commented

2018-07-04 02:22:57 +02:00

Added subscriber: @deadpin