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ported the University CGI demo from WINDOWS + GLUT + GLEW + GLU + OpenGL 4 to LINUX WAYLAND + EGL + GLES 2 with minimal cuts

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beno
2025-07-03 01:26:25 +02:00
commit 6c125fb35e
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GL_SHADING_LANGUAGE_VERSION​
is different from
GL_SHADING_LANGUAGE_VERSION
the correct form is the second, taken from a compiler error, the first is text taken from
https://www.khronos.org/opengl/wiki/OpenGL_Context
(
there is an invisible blank at the end of the first string,
it can be identified by moving the text cursor one step at the time​,
it doesn't show through selection since it has width 0, but the cursor movement skips a step due to its presence )
verify by replacing in the following text:
this phrase GL_SHADING_LANGUAGE_VERSION
will change height on the screen depending on the label used
and can also make the compiler fail with an absurd "undefined reference"