Question by Lordinarius · Apr 10, 2015 at 06:41 PM · shader background effect blur

Changing render time (framerate) of a shader

Is it possible to adjust update time of a shader? For example i have a blur shader and i just want to update it 5 times in a second.

I want to make a blury background in pause/gameover menu for a mobile game. It is too expensive to use blur effects for mobile platform. So i wanted to render it for one time and use it as a background.

Thanks.

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equus_ligneus · Apr 10, 2015 at 09:04 PM 0

Does your menu-background change in any way? Because if it does not, you could just render your blurry background once (in a renderer of your choice) and use it as a texture

Lordinarius · Apr 11, 2015 at 05:33 AM 0

I thought like that but does it make a cpu spike ?

LEGEND383 · Apr 11, 2015 at 07:09 AM 0

I'm pretty sure @equus_ligneus was suggesting that, if you're using a static background, to arrange the objects in a 3d package and render them out to an image file. This could even be done in unity editor, just apply the blur, take a screenshot of the game view and then crop it in an image editor of your choice. Then you remove the blur, and put the image behind your menu.

Lordinarius · Apr 11, 2015 at 07:13 AM 0

It is static but could change. Every gameover state will be different because player will be in different position. So i should generate this texture in play mode with no cpu spike.

equus_ligneus · Apr 11, 2015 at 12:32 PM 0

Well, then I don't think you'll get past RenderTextures... And cpu-spikes for that matter (depends on your screen resolution in contrast to your cpu speed). Either do your blurring as a post processing effect or render your current view to an image, apply the blur and use it as an image in your gui. Because as far as I know, setting the frame rate for one specific shader is not possible.

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