REQ: Ambient Occlusion

[lurker]

Code: Select all

        const float pm15 = gl_ProjectionMatrix[2][3];
        const float pm11 = gl_ProjectionMatrix[2][3];

Remove 'const' from those lines. Shouldn't hurt any.

[Hacked]

ahh, thanks
infolog pointed me to lines "8 and 9"
so i was confused

[lurker]

of the shader

[jK]

Okay, I removed it from my webserver ...
I SAID IT IS A CODE EXAMPLE AND NOT A WIDGET

[Gnomre]

Okay, I removed it from my webserver ...
I SAID IT IS A CODE EXAMPLE AND NOT A WIDGET

This widget will go GREAT with Hoi's bloom widget!

[jK]

1. THIS IS NOT A WIDGET!!!
2. IT IS NOT HOI'S BLOOM WIDGET!!!

[Falcrum]

OMG... ok... close this topic... =/

[dizekat]

lol nubs
jK, can you put your code somewhere on pastebin maybe? I'm curious how it works, and theres no ways nubs will copypaste it into lua widget from pastebin.

[clumsy_culhane]

lol jK calm the f*** down. That said, everyone i think needs to take a chill pill...

[dizekat]

lol jK calm the f*** down. That said, everyone i think needs to take a chill pill...

you especially need to take a whole box

[FLOZi]

Okay, I removed it from my webserver ...
I SAID IT IS A CODE EXAMPLE AND NOT A WIDGET

This widget will go GREAT with Hoi's bloom widget!

[Hacked]

1. THIS IS NOT A WIDGET!!!

wow great widget

[lurker]

lol nubs
jK, can you put your code somewhere on pastebin maybe? I'm curious how it works, and theres no ways nubs will copypaste it into lua widget from pastebin.

Code: Select all

 depthcopy = gl.CreateTexture(vsx,vsy, {
    border = false,
    format = GL_DEPTH_COMPONENT24,
    min_filter = GL.NEAREST,
    mag_filter = GL.NEAREST,
  })

  ssaoShader = gl.CreateShader({
    vertex = [[
      varying vec2 normScreenCoord;

      void main()
      {
         normScreenCoord = gl_Vertex.xy;
         gl_Position = vec4( (gl_Vertex.xy-0.5)*2.0 ,1.0,1.0);
       }
    ]],
    fragment = [[
      uniform sampler2D tex0;

      varying vec2 normScreenCoord;

      //////////////////////////////////////////////////
      // Depth conversion

        const float pm15 = gl_ProjectionMatrix[2][3];
        const float pm11 = gl_ProjectionMatrix[2][3];
        float convertDepthToZ(float d) {
          return pm15 / (((d * 2.0) - 1.0) + pm11);
        }

        vec4 convertDepthToZ(vec4 d) {
          return pm15 / (((d * 2.0) - 1.0) + pm11);
        }

      //////////////////////////////////////////////////
      // Main

      void main(void)
      {
        float depth = convertDepthToZ( texture2D(tex0, normScreenCoord ).r );

        float texelScale = clamp(1.0-depth*0.002,0.0,1.0);

        vec2 texel = vec2(dFdx(normScreenCoord.s),dFdy(normScreenCoord.t))*3.0*texelScale;

        float ao = 0.0;
        float aoMultiplier = 0.3;
        float depthTolerance = 0.01;

        vec4 depths,depthsFix;
        depths.x = texture2D(tex0, normScreenCoord+vec2(texel.x,0.0) ).r;
        depths.y = texture2D(tex0, normScreenCoord+vec2(0.0,texel.y) ).r;
        depths.z = texture2D(tex0, normScreenCoord+vec2(-texel.x,0.0) ).r;
        depths.w = texture2D(tex0, normScreenCoord+vec2(0.0,-texel.y) ).r;
        depths = convertDepthToZ(depths);
        depths = (depth-depths-depthTolerance) * aoMultiplier;

        bvec4 facb = greaterThan( depths, vec4(0.3) );
        vec4 fac = vec4(float(facb.x),float(facb.y),float(facb.z),float(facb.w));
        depthsFix = smoothstep(0.3,0.8,depths);

        depths = smoothstep(0.0,0.2,depths) - fac*depthsFix;
        ao += depths.x + depths.y + depths.z + depths.w;

        texel*=2.0;
        aoMultiplier*=0.75;
        depths.x = texture2D(tex0, normScreenCoord+vec2(texel.x,0.0) ).r;
        depths.y = texture2D(tex0, normScreenCoord+vec2(0.0,texel.y) ).r;
        depths.z = texture2D(tex0, normScreenCoord+vec2(-texel.x,0.0) ).r;
        depths.w = texture2D(tex0, normScreenCoord+vec2(0.0,-texel.y) ).r;
        depths = convertDepthToZ(depths);
        depths = (depth-depths-depthTolerance) * aoMultiplier;

        facb = greaterThan( depths, vec4(0.3) );
        fac = vec4(float(facb.x),float(facb.y),float(facb.z),float(facb.w));
        depthsFix = smoothstep(0.3,0.8,depths);

        depths = smoothstep(0.0,0.2,depths) - fac*depthsFix;
        ao += depths.x + depths.y + depths.z + depths.w;

	  ao/=6.0;
	  ao=min(ao,0.5);
	
	  gl_FragColor = vec4(1.0-ao);
	  //gl_FragColor = vec4(texelScale);
	  //gl_FragColor = vec4(max(0.4,1.0-depth*0.002));
        //gl_FragColor.rga *= 0.5;
      }
    ]],
    uniformInt = {
      tex0 = 0,
    }
  })


function widget:DrawWorld()
  gl.CopyToTexture(depthcopy, 0, 0, 0, 0, vsx, vsy)

  gl.Blending(GL.ZERO,GL.SRC_COLOR)
  --gl.Blending(false)
  gl.UseShader(ssaoShader)
  gl.Texture(0,depthcopy)
  gl.TexRect(0,1,1,0)
  gl.Texture(0,false)
  gl.UseShader(0)
  gl.Blending(GL.SRC_ALPHA, GL.ONE_MINUS_SRC_ALPHA)
end

[REVENGE]

You could really go places with this.

[Hacked]

whoa how did you do that?
jw how to make this more intense b/c im getting bored of it already =D

[Ashnal]

It would be really nice for someone to finish this. The concept is pretty cool.

[losbellos]

does anybody still have this lua script?

[BrainDamage]

try reading 4 posts above yours

[losbellos]

THE create texture function expects number, but it doesnt get. Any clues, seems to be some syntax error?

[losbellos]

ok I got that problem solved by declaring the two variablesb but there is an other one with the createshader. Complicated shit.