LÖVE

Posted: **Tue Jul 15, 2014 11:19 am**

Hi, I wanted to share my lights.

It's pretty simple:

Code: Select all

For every light
  For every block
     Iterate over edges of block, calculating the shadow for each edge
     Draw the shadows to the inverted stencil
  Turn on shader and additive blending
  Draw a fullscreen rectangle (shader renders the light with some simple math)
Change blending mode to multiply
Render every block with color

It's all runs smoothly, even with many lights and many Box2D bodies.

I just wanted to share and see what you guys think

Well I just saw this: viewtopic.php?f=5&t=77418

Code on GitHub in case anyone wants to see:
https://github.com/jacobbrunson/Love-Lights

Here's a standalone .love if you want it:
https://github.com/jacobbrunson/Love-Li ... ights.love

Controls:

Left-Click: Place light
Right-Click: Drag block
A/D: Cycle light hue
W/S: Change light sizes
Z: Remove light
F: Spawn blocks
R: Remove blocks
G: Toggle gravity
Arrow keys: Move blocks

And shameless plug, I also made this in Java and WebGL:
https://github.com/jacobbrunson/BasicLighting
http://jacobbrunson.me/lights.html

Posted: **Tue Jul 15, 2014 2:30 pm**

Really nice, what fps do you get ?

Posted: **Tue Jul 15, 2014 8:04 pm**

Ranguna259 wrote:Really nice, what fps do you get ?

Hmm I just tested it. I get a solid 60 w/ 10 lights and 100 bodies, and also with 25 lights and 8o bodies

All of the code is currently optimized for readability so there's likely performance loss there. Also most of this is computed on the CPU. I might try moving all of it over to a shader to make it more robust.

Would you normally do math (like calculating the position of shadows) inside a shader? Or should that stay on the CPU?

Edit:
Well I just saw this: viewtopic.php?f=5&t=77418

So I am now quitting and putting my code on GitHub in case anyone wants to see:
https://github.com/jacobbrunson/Love-Lights

Here's a standalone .love if you want it:
https://github.com/jacobbrunson/Love-Li ... ights.love

And shameless plug, I also made this in Java and WebGL:
https://github.com/jacobbrunson/BasicLighting
http://jacobbrunson.me/lights.html

Posted: **Tue Jul 15, 2014 10:04 pm**

Disable vsync and check the FPS, lights on the CPU are very resource intensive so I want to know how much is shader based lightning better than CPU lightning.

Posted: **Tue Jul 15, 2014 11:02 pm**

fruitcup wrote: So I am now quitting and putting my code on GitHub in case anyone wants to see:
https://github.com/jacobbrunson/Love-Lights

No need to quit. There is enough LÖVE for ~~everyone~~ two lighting engines.

LÖVE

Dynamic lighting and shadows

Dynamic lighting and shadows

Re: Dynamic lighting and shadows

Re: Dynamic lighting and shadows

Re: Dynamic lighting and shadows

Re: Dynamic lighting and shadows