HeelX@ I guess, I'm not familiar with real motion blur yet Cause at the moment I use simple (native) blur shader, which blurs the screen in the direction of the input values (I use "mickey.x" and "mickey.y", so it blurs the screen in the opposite direction of the mouse movement in my case). But real motion blur effect, will blur the screen from the camera rotation, as it looks like in games (cause I don't know the technique behind it, for me it looks like it blurs from the rotations of the camera). I hope I was more clear now, but my English sucks any way

Sorry for double post, but I got another idea What about dirt, water, blood and other shader effects on screen? I played recently Modern Warfare 2, and just got this idea in my head. Would be really nice to get one shader, which could be used for those needs, just by changing .tga files and adjusting some parameters.

what about a video grain effect and tone mapping?
Simple to create and gives nice results

They already exist man Tone mapping from Wiki and video grain from Slin collection, if you need them, I can get you some links.

Thank you 3run but I'm not really interested in this shader-collection 'cause I'm experienced enough to write my own
...but I have to say it's a nice idea and HeelX will do a great job on it
I just wanted to give some ideas and all these pp-effects could be implemented into one single shader for good performance

The next effect is something easy: a grayscale shader. It supports 8 different modes. This shader is also a nice example how to use the .technique feature of Gamestudio The download link is in the first post of this thread.

Grayscale shader:


P.S: if you use an alpha below 0%, you BOOST your colors by their calculated luminance and if the alpha is above 100%, the colors get INVERTED and are boosted if above 200%!

nice toy, can be really useful sometimes, thanks!

Really useful, thanks!

great work HeelX! Thanks for your efforts

I added a Sepia Tone effect with 4 different modes: Tint, Matrix, Duotone and YIQ. The download link is in the first post of this thread.

- Tint: the pixel is converted to grayscale and an offset is added for each R-, G- and B-channel
- Matrix: the pixel's RGB color is multiplied with a matrix which returns a sepia tone
- Duotone: the grayscale value of the pixel is used to blend beween two sepia'ish colors
- YIQ: the pixel's color is converted from RGB color space to YIQ color space, modified to a sepia color and translated back into RGB color space

Sepia effect:


When adjusting the alpha parameter, you can blend the Sepia tone with the original image to control the style of your game. Especially the YIQ- and Duotone-mode are useful. If you change the YIQ-target color and tune down the alpha, you can make the scene "feel" colder or warmer. With the Duotone-mode you can produce arbitrary duotone images.