Mg_IDEAS.txt

Viewport arrays 
OpenGL ES 3.2
GL_ARB_viewport_array
#extension GL_ARB_viewport_array : <behavior>

OpenGL ES 3.1
NV_viewport_array
https://www.khronos.org/registry/gles/extensions/NV/NV_viewport_array.txt

#extension GL_NV_viewport_array : <behaviour>

OpenGL 4.3
OpenGL ES 3.1
GL_NV_viewport_array2
https://www.opengl.org/registry/specs/NV/viewport_array2.txt

#extension GL_NV_viewport_array2 : <behavior>

Explicit locations
OpenGL ES 2.0
GL_NV_explicit_attrib_location
https://www.khronos.org/registry/gles/extensions/NV/NV_explicit_attrib_location.txt

#extension GL_NV_explicit_attrib_location : <behavior>

OpenGL 3.3
ARB_explicit_attrib_location
https://www.opengl.org/registry/specs/ARB/explicit_uniform_location.txt

#extension GL_ARB_explicit_uniform_location : <behavior>

Bindless textures
OpenGL 4.0
https://www.opengl.org/registry/specs/ARB/bindless_texture.txt

OpenGL ES 3.1/3.2
https://www.khronos.org/registry/gles/extensions/IMG/IMG_bindless_texture.txt

OpenGL GLSL workaround for Metal.

GLSL entrypoint can't be named main HOWEVER we could append a main method body to source code 
which calls custom function for every stage before compiling the code

e.g. 

void main()
{
	custom_func();
}

TODO : Remove all finalize classes from code