text example can't run. about magnum HOT 4 CLOSED

Hi, thanks for your interest in this library.

The FreeTypeFont plugin is not an error, it is available in magnum-plugins repository. It requires FreeType library, but I don't know if it is easily available for OSX.

The MagnumFont plugin doesn't have FreeType dependency, but is far more limited, as you need to pregenerate all glyphs to a file which you then load. It requires TgaImporter plugin, which needs its own manager instance to be successfully loaded, as mentioned in the docs. Also it has its own file format which needs to be converted from TTF files (e.g.) using the magnum-fontconverter utility.

Anyway, if you want to try it without too much hassle, check out ports branch where the text example uses MagnumFont and has everything needed in place.

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I install plugins (freetypefont) , But still error when I run text exmaple.
Using optional features:
GL_APPLE_vertex_array_object
GL_ARB_ES2_compatibility
GL_ARB_separate_shader_objects
GL_ARB_texture_storage
GL_EXT_debug_label
GL_EXT_debug_marker
GL_EXT_texture_filter_anisotropic
Shader::compile(): compilation of fragment shader 2 failed with the following message:
ERROR: 2:86: Initializer not allowed
ERROR: 2:96: Use of undeclared identifier 'position'
ERROR: 2:100: Use of undeclared identifier 'isInside'
ERROR: 2:110: Initializer not allowed
ERROR: 2:118: Use of undeclared identifier 'position'
ERROR: 2:118: Use of undeclared identifier 'offset'
ERROR: 2:118: Use of undeclared identifier 'isInside'
ERROR: 2:119: Use of undeclared identifier 'position'
ERROR: 2:119: Use of undeclared identifier 'offset'
ERROR: 2:119: Use of undeclared identifier 'isInside'
ERROR: 2:120: Use of undeclared identifier 'position'
ERROR: 2:120: Use of undeclared identifier 'offset'
ERROR: 2:120: Use of undeclared identifier 'isInside'
ERROR: 2:121: Use of undeclared identifier 'position'
ERROR: 2:121: Use of undeclared identifier 'offset'
ERROR: 2:121: Use of undeclared identifier 'isInside'
ERROR: 2:123: Use of undeclared identifier 'offset'
ERROR: 2:123: Use of undeclared identifier 'offset'
ERROR: 2:130: Use of undeclared identifier 'distanceSquared'
ERROR: 2:131: Use of undeclared identifier 'distanceSquared'
ERROR: 2:137: Use of undeclared identifier 'offset'
ERROR: 2:146: Attempt to use 'sign' as a variable
Assertion Shader::compile({vert, frag}) failed in /Users/xxx/SDK/magnum_sdk/magnum/src/Magnum/TextureTools/DistanceField.cpp on line 96

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It seems that the GL driver on OSX doesn't like GLSL const keyword, I'll try to work around that. In the meantime, if you try the text example from ports branch, it should work without issues.

The cubemap example currently requires OpenGL 4.3, which is a mistake.

Will fix these later today, hopefully :-) Thank you very much for reporting the issues.

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Should be fixed in 6fa9d36.

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