Im Log bin ich auf die folgende Sequenz gestoßen, da gibt es wohl ein Problem mit dem grid.shader. Mit den Interna von OpenGL kenn ich mich leider garnicht aus.
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2017-10-20 07:23:10,422 - DEBUG - UM.View.GL.OpenGL.__init__ [85]: Initialized OpenGL subsystems.
2017-10-20 07:23:10,423 - DEBUG - UM.View.GL.OpenGL.__init__ [86]: OpenGL Version: 2.1 ATI-10.2.37
2017-10-20 07:23:10,425 - DEBUG - UM.View.GL.OpenGL.__init__ [87]: OpenGL Vendor: ATI Technologies Inc.
2017-10-20 07:23:10,427 - DEBUG - UM.View.GL.OpenGL.__init__ [88]: OpenGL Renderer: ATI Radeon HD 4850 OpenGL Engine
2017-10-20 07:23:10,429 - DEBUG - UM.View.GL.ShaderProgram.load [55]: Loading shader file [/Applications/Cura.app/Contents/MacOS/resources/shaders/default.shader]...
2017-10-20 07:23:10,434 - DEBUG - UM.View.GL.ShaderProgram.load [55]: Loading shader file [/Applications/Cura.app/Contents/MacOS/resources/shaders/selection.shader]...
2017-10-20 07:23:10,438 - DEBUG - UM.View.GL.ShaderProgram.load [55]: Loading shader file [/Applications/Cura.app/Contents/MacOS/resources/shaders/default.shader]...
2017-10-20 07:23:10,441 - DEBUG - UM.View.GL.ShaderProgram.load [55]: Loading shader file [/Applications/Cura.app/Contents/MacOS/resources/shaders/composite.shader]...
2017-10-20 07:23:10,447 - DEBUG - UM.View.GL.ShaderProgram.load [55]: Loading shader file [/Applications/Cura.app/Contents/MacOS/resources/shaders/overhang.shader]...
2017-10-20 07:23:10,452 - DEBUG - UM.View.GL.ShaderProgram.load [55]: Loading shader file [/Applications/Cura.app/Contents/MacOS/resources/shaders/striped.shader]...
2017-10-20 07:23:10,460 - DEBUG - UM.View.GL.ShaderProgram.load [55]: Loading shader file [/Applications/Cura.app/Contents/MacOS/resources/shaders/default.shader]...
2017-10-20 07:23:10,463 - DEBUG - UM.View.GL.ShaderProgram.load [55]: Loading shader file [/Applications/Cura.app/Contents/MacOS/resources/shaders/grid.shader]...
2017-10-20 07:23:10,467 - ERROR - UM.View.GL.ShaderProgram.setFragmentShader [127]: Fragment shader failed to compile: ERROR: 0:20: '/' does not operate on 'vec2' and 'int'
ERROR: 0:20: '/' does not operate on 'vec2' and 'int'
ERROR: 0:21: Use of undeclared identifier 'majorGrid'
ERROR: 0:21: Use of undeclared identifier 'majorGrid'
ERROR: 0:23: Use of undeclared identifier 'frag_color'
ERROR: 0:23: Use of undeclared identifier 'majorLine'