Why are custom fonts slowing down my program?












0















So I’m making a project in p5.js which aim to reproduce the Matrix rain code effect.
It ran pretty smooth until I decided to load a custom font.
When I did, my framerate dropped considerably. And it’s the case for every custom font that I try to load (only when I use the loadFont function; if I use textFont and some default font it doesn’t seem to slow down)



Of course, I use the loadFont function in the preload function, and textFont in setup, so I don’t know if this is a known thing ? How could I avoid this ?



Here is a Minimum Viable Example of the problem :



var characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789$+-*/÷=%"'#&_(),.;:?!\|{}<>^~ "

var font;



var spacing_width = 10;

var spacing_height = 20;



function preload() {

    font = loadFont('matrix_font.otf');

}



function setup() {

  createCanvas(window.innerWidth, window.innerHeight);

  frameRate(60);

  background(0);



  textFont(font);

  fill(255)

}



var lastUpdate;



function draw() 

{

  background(0);



  var timeSinceLastUpdate = new Date().getTime() - lastUpdate;

  print(timeSinceLastUpdate + "ms") // prints time elapsed between each frame

  lastUpdate = new Date().getTime();



  for(var i = 0; i < 40; i++)

    for(var j = 0; j < 40; j++)

      text(characters[int(random(0, characters.length))], j * spacing_width, i * spacing_height)

}


This code prints in the console values around 40-50ms, but when I comment out the line textFont(font); the values are around 10-20ms



I'm using this font but I have the problem with every font that I try to load






javascript fonts p5.js







share|improve this question























  • Please link between crossposts. This question has also been posted here: discourse.processing.org/t/custom-fonts-slowing-down-my-program/…

    – Kevin Workman
    Jan 2 at 17:21











  • Oh I didn't know I could do that

    – Drakalex
    Jan 3 at 10:14
















0















So I’m making a project in p5.js which aim to reproduce the Matrix rain code effect.
It ran pretty smooth until I decided to load a custom font.
When I did, my framerate dropped considerably. And it’s the case for every custom font that I try to load (only when I use the loadFont function; if I use textFont and some default font it doesn’t seem to slow down)



Of course, I use the loadFont function in the preload function, and textFont in setup, so I don’t know if this is a known thing ? How could I avoid this ?



Here is a Minimum Viable Example of the problem :



var characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789$+-*/÷=%"'#&_(),.;:?!\|{}<>^~ "

var font;



var spacing_width = 10;

var spacing_height = 20;



function preload() {

    font = loadFont('matrix_font.otf');

}



function setup() {

  createCanvas(window.innerWidth, window.innerHeight);

  frameRate(60);

  background(0);



  textFont(font);

  fill(255)

}



var lastUpdate;



function draw() 

{

  background(0);



  var timeSinceLastUpdate = new Date().getTime() - lastUpdate;

  print(timeSinceLastUpdate + "ms") // prints time elapsed between each frame

  lastUpdate = new Date().getTime();



  for(var i = 0; i < 40; i++)

    for(var j = 0; j < 40; j++)

      text(characters[int(random(0, characters.length))], j * spacing_width, i * spacing_height)

}


This code prints in the console values around 40-50ms, but when I comment out the line textFont(font); the values are around 10-20ms



I'm using this font but I have the problem with every font that I try to load






javascript fonts p5.js







share|improve this question























  • Please link between crossposts. This question has also been posted here: discourse.processing.org/t/custom-fonts-slowing-down-my-program/…

    – Kevin Workman
    Jan 2 at 17:21











  • Oh I didn't know I could do that

    – Drakalex
    Jan 3 at 10:14














0












0








0








So I’m making a project in p5.js which aim to reproduce the Matrix rain code effect.
It ran pretty smooth until I decided to load a custom font.
When I did, my framerate dropped considerably. And it’s the case for every custom font that I try to load (only when I use the loadFont function; if I use textFont and some default font it doesn’t seem to slow down)



Of course, I use the loadFont function in the preload function, and textFont in setup, so I don’t know if this is a known thing ? How could I avoid this ?



Here is a Minimum Viable Example of the problem :



var characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789$+-*/÷=%"'#&_(),.;:?!\|{}<>^~ "

var font;



var spacing_width = 10;

var spacing_height = 20;



function preload() {

    font = loadFont('matrix_font.otf');

}



function setup() {

  createCanvas(window.innerWidth, window.innerHeight);

  frameRate(60);

  background(0);



  textFont(font);

  fill(255)

}



var lastUpdate;



function draw() 

{

  background(0);



  var timeSinceLastUpdate = new Date().getTime() - lastUpdate;

  print(timeSinceLastUpdate + "ms") // prints time elapsed between each frame

  lastUpdate = new Date().getTime();



  for(var i = 0; i < 40; i++)

    for(var j = 0; j < 40; j++)

      text(characters[int(random(0, characters.length))], j * spacing_width, i * spacing_height)

}


This code prints in the console values around 40-50ms, but when I comment out the line textFont(font); the values are around 10-20ms



I'm using this font but I have the problem with every font that I try to load






javascript fonts p5.js







share|improve this question














So I’m making a project in p5.js which aim to reproduce the Matrix rain code effect.
It ran pretty smooth until I decided to load a custom font.
When I did, my framerate dropped considerably. And it’s the case for every custom font that I try to load (only when I use the loadFont function; if I use textFont and some default font it doesn’t seem to slow down)



Of course, I use the loadFont function in the preload function, and textFont in setup, so I don’t know if this is a known thing ? How could I avoid this ?



Here is a Minimum Viable Example of the problem :



var characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789$+-*/÷=%"'#&_(),.;:?!\|{}<>^~ "

var font;



var spacing_width = 10;

var spacing_height = 20;



function preload() {

    font = loadFont('matrix_font.otf');

}



function setup() {

  createCanvas(window.innerWidth, window.innerHeight);

  frameRate(60);

  background(0);



  textFont(font);

  fill(255)

}



var lastUpdate;



function draw() 

{

  background(0);



  var timeSinceLastUpdate = new Date().getTime() - lastUpdate;

  print(timeSinceLastUpdate + "ms") // prints time elapsed between each frame

  lastUpdate = new Date().getTime();



  for(var i = 0; i < 40; i++)

    for(var j = 0; j < 40; j++)

      text(characters[int(random(0, characters.length))], j * spacing_width, i * spacing_height)

}


This code prints in the console values around 40-50ms, but when I comment out the line textFont(font); the values are around 10-20ms



I'm using this font but I have the problem with every font that I try to load






javascript fonts p5.js




javascript fonts p5.js






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jan 2 at 17:20









DrakalexDrakalex

66121027




66121027













  • Please link between crossposts. This question has also been posted here: discourse.processing.org/t/custom-fonts-slowing-down-my-program/…

    – Kevin Workman
    Jan 2 at 17:21











  • Oh I didn't know I could do that

    – Drakalex
    Jan 3 at 10:14



















  • Please link between crossposts. This question has also been posted here: discourse.processing.org/t/custom-fonts-slowing-down-my-program/…

    – Kevin Workman
    Jan 2 at 17:21











  • Oh I didn't know I could do that

    – Drakalex
    Jan 3 at 10:14

















Please link between crossposts. This question has also been posted here: discourse.processing.org/t/custom-fonts-slowing-down-my-program/…

– Kevin Workman
Jan 2 at 17:21





Please link between crossposts. This question has also been posted here: discourse.processing.org/t/custom-fonts-slowing-down-my-program/…

– Kevin Workman
Jan 2 at 17:21













Oh I didn't know I could do that

– Drakalex
Jan 3 at 10:14





Oh I didn't know I could do that

– Drakalex
Jan 3 at 10:14












1 Answer
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See https://github.com/processing/p5.js/issues/3435 for a discussion of this issue






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    See https://github.com/processing/p5.js/issues/3435 for a discussion of this issue






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      See https://github.com/processing/p5.js/issues/3435 for a discussion of this issue






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        See https://github.com/processing/p5.js/issues/3435 for a discussion of this issue






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        See https://github.com/processing/p5.js/issues/3435 for a discussion of this issue







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        answered Jan 3 at 10:00









        rednoyzrednoyz

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