Vignetting

[Canardia]

Vignetting makes the corners and edges of the screen darker. I think it's basically a circle shape, maybe oval on a widescreen monitor.

I think this could be implemented pretty easily as a post-processing effect.

It adds a remarkable visual realism to the game, especially when combined with DoF and Bloom.

 

Maybe it could be used also as a per-face shader for faces which face to the inside of a mesh, so it would add SSAO to corridors and rooms.

[Josh]

You could just draw an image of the darkening effect on the screen, with the shade blend enabled.

[Canardia]

Then I need to calculate the image first, since it must be according to the screen size.

Maybe I could just draw lots of different sized circles with OpenGL.

[Josh]

It's a blurry image, so I think you can use the same texture and just stretch it to the screen.

[Michael Betke]

You guys will mabe find this thread over at crymod interesting: http://crymod.com/thread.php?threadid=59961

 

Bokeh and vignetting are the best DoF effect you can have. The quality is astonishing.

Having this kind is top for every kind of artistic presentation.

The person who writes me such a post-effect will get a Oscar.

[wh1sp3r]

i have Vignetting shader done, it's really easy

 

but i have problem with Bookeh effect, because i don't know, how to detect hightlights

when skybox is on scene it has usually same colour as hightlights of other objects in scene but there are no bookeh effect on the sky so .. my question is simple, how to detect right hightlights ?

[Canardia]

You don't need to care if it's sky or not, it's the artist's fault if he makes static skies with too bright colors. A good skybox texture has only distant clouds and no sun highlights in the clouds, since the sun must move in the game.

[omid3098]

my question is simple, how to detect right hightlights ?

as all bokeh points are same size:

maybe you can define it for all highligts smaller than "n" pixles.. and for example if n=10:

highlights with 10 pixel will draw bokeh shape in pure white, highlights with 1 pixel will be very fade..

and highlights with more than 10 pixels (like sky) can be just burred..

 

 

PS. or you can use only specular highlights..

[wh1sp3r]

ok, i converted RGB to HSL, and where L is bigger then something .. there is a place for this effect.

i will use a gaussian blur I am curious, how will it look like