LÖVE

Ref wrote:Try the attached demo (just something I stuck together from your code.).
The left image is created with bloom.
I think that this is the effect your are attempting???

Nope, I don't think so. Here's what it looks like for me:




Just to be clear, the shader script I'm using is slime's, and, according to his example, should result in something like this:
See his posts here:
viewtopic.php?f=4&t=3733&p=38666&hilit=bloom#p38565
And here:
viewtopic.php?f=4&t=3733&p=38666&hilit=bloom#p38666

And here's another example of a bloom effect (first picture is off, second picture is on):
http://www.progx.org/users/Gfx/aerith_bloom.png

You might want to give this shader a try.

Ref wrote:You might want to give this shader a try.

Code: Select all

bloom2 = love.graphics.newPixelEffect[[
   //BlackBulletIV
   extern vec2 size = vec2(20,20);
   extern int samples = 20; // pixels per axis; higher = bigger glow, worse performance
   extern float quality = .15; // lower = smaller glow, better quality

   vec4 effect(vec4 colour, Image tex, vec2 tc, vec2 sc)
   {
      vec4 source = Texel(tex, tc);
      vec4 sum = vec4(0);
      int diff = (samples - 1) / 2;
      vec2 sizeFactor = vec2(1) / size * quality;

      for (int x = -diff; x <= diff; x++)
      {
         for (int y = -diff; y <= diff; y++)
         {
            vec2 offset = vec2(x, y) * sizeFactor;
            sum += Texel(tex, tc + offset);
         }
      }

   return ((sum / (samples * samples)) + source) * colour;
   }
]]

Thanks again!

I had run across that before and, while the results look pretty good, its performance is pretty lacking, unfortunately...

Hi,

I've written a little raytracer from scratch. It's not perfect and has some bugs like the shadow projection on the mirrored material, but I'm pretty happy with the result .

Controls:
W = Forward
S = Backward
A = Left Side
D = Right Side
B = Down
N = Up
Escape = exit the program

And for those who can't run glsl code :

Taz wrote:Hi,

I've written a little raytracer from scratch. It's not perfect and has some bugs like the shadow projection on the mirrored material, but I'm pretty happy with the result .

Controls:
W = Forward
S = Backward
A = Left Side
D = Right Side
B = Down
N = Up
Escape = exit the program

And for those who can't run glsl code :

Wow, excellent work!

Displays me an error with shader location failure. I'm pretty sure my card Radeon HD 7970 can run GLSL.

raidho36 wrote:Displays me an error with shader location failure. I'm pretty sure my card Radeon HD 7970 can run GLSL.

Actually I can't find a reason for this... can you post the exact error message ?

Im getting an error as well.
graphics.lua:1346: Cannot get location of shader variable `light.direction'.
Acommon error is to define but not use the variable.

traceback
[C]: in function 'sendFloat'
graphics.lua:1346: in function 'send'
main.lua:102 in function 'update'
[C]: in function 'xpcall'


Edit: commenting out line 102 in main.lua allows it to run but im not sure the effect is the same.

Ok that was my error forget to comment out the light direction but for some reasons the code still run with it .... Here's the (hopefully) fixed version.

The yellow ball has reflections inside out, but other than that it's an "okay". I don't honestly understand why lövers are so obsessed with 3d and particularry with raytracing.