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OpenGL ES opengl es texturing line

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i have an application that allows drawing thru touch just like paint and using opengl es (mobile),

currently, the line is just drawing with simple/default line style of opengl using GL_LINE_STRIP,

i want to have different pen style on it, just like attached, 

so my question, is it possible to texture an opengl Line (GL_LINE_STRIP) so i can achieve my desired effect (see attached)?

i know its possible to texture an OpenGL point via point sprite, but i have not found anything related to texturing an opengl Line.

is this possible?

S2.png

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I think you'll have to use GL_TRIANGLES to create a strip of quads to achieve any reasonable level of control over line thickness and texturing.

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if that's the case, can you guys point me to any resources or tutorials on how to render lines as triangles efficiently without using so m any vertices?

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