I haven't really presented games that will appear until now, but as I prefer this kind of complex game that requires resource management, here's what I found on the web...
The youtube channel is called Stealth17 Gaming
2D, 3D, game, games, online game, game development, game engine, programming, OpenGL, Open AI, math, graphics, design, graphic, graphics, game development, game engine, programming, web development, web art, web graphic, arts, tutorial, tutorials,
void mainImage( out vec4 fragColor, in vec2 fragCoord )
{
//set the uv to a proper size on the center of screen
vec2 uv = (fragCoord - 0.5 * iResolution.xy) / min(iResolution.x, iResolution.y);
// set rotation angle value
float rot = radians(0.0);
// this set rotation by time and
rot = iTime;a
// algebra formula for rotation by matrix , https://en.wikipedia.org/wiki/Rotation_matrix
mat2 m = mat2(cos(rot), -sin(rot), sin(rot), cos(rot));
// rotation of uv with matrix algebra formula where is set the rotation angle
uv = m* uv;
// define float by function module from 1.0 and uv.x - uv.y
float d = mod(uv.x - uv.y, 1.0);
// color for fragColor is value of fload d by module function
vec4 col = vec4(vec3(d), 1.0);
fragColor = vec4(col);
}