GLM is one the GL library used for 2d 3d operation 

But it is written in C++ 

This project wraps the functions using C struct and function pointers

Example C code

GSL library can be used for advanced math operations and vector, stats, sort, permute, fitting, matrix, fourier transform, blas integration

This code demonstration a simple matrix addition and diagonal addition in kotlin using GSL

A simple example of OSMesa driver offscreen rendering to a buffer binary array

This explains OpenGL functions can be used to indirectly manipulate a numeric array

Kotlin Code

GTK4 is already available for download as "mingw-w64-x86_64-gtk4" you can type "pacman -S mingw-w64-x86_64-gtk4" to install it

Below steps are useful if you want to customize and install GTK4 with vulkan

Step 1 download and install MSYS2

Step 3 Install toolchains

Cairo is a ancient 2D library to draw shapes on linux platform.

It can be used in windows with proper library DLL extensions.

There a few software still uses cairo.

This demo kotlin code explains how to render a cairo+graphene rectangle region using GSK

Kotlin Code

This is a small experiment for AVR Atmega8 

A simple swap function which is possibly re-used inside actual avr "C/C++" code as library

import platform.avr.*
import kotlinx.cinterop.internal.*
import kotlinx.cinterop.*

fun swap(a:uint8_tVar, b:uint8_tVar) = memScoped {
    var temp = a
    a.value = b.value
    b.value = temp.value
}

Install mingw64 dependencies as below

This is an experimental code with few glitches

it allows Cygwin+Mingw to use GTK3 from cygwin to render opengl GLEW

Kotlin code

GTK windows design using glade builder

This code explains how to use Kotlin to program GTK3 and Glade3 using Cygwin Glade designer

Install cygwin with below dependencies

mingw64-x86_64-gtk3    3.22.28-1
glade                                 3.20.3-1
xorg-server                       1.20.4-1
xinit                                   1.4.1-1

launch cygwin and export the PATH as

Embedded OpenCL inside Kotlin

OpenCL code which runs from kotlin

#pragma OPENCL EXTENSION cl_khr_byte_addressable_store : enable
__constant char hw[] = "Hello World";
__kernel void hello(__global char * A) {
    size_t tid = get_global_id(0);
    A[tid] = hw[tid];
}

Kotlin code which runs OpenCL

Embedded TCL inside Kotlin

TCL code which runs from kotlin

puts "Hello, world!"

Kotlin code which run TCL

package plot

import kotlinx.cinterop.*
import tcl.*

fun main() 
{
    var tcli = Tcl_CreateInterp()
    if(Tcl_Eval(tcli, "set a 1")==TCL_OK) {
        Tcl_EvalFile(tcli, "hello.tcl")
    }
    Tcl_DeleteInterp(tcli)
}

You need to install MSYS2 and tcl using below command