Modify the final color output

Unity Engine
1

Hi there,

As the title suggests, how can I modify the final color output , after all the lighting pass and shadow pass are done, on a render texture(in forward path)? In the compiled shader I couldn’t find a pass that actually combine all the forward passes…

Thanks

2

That would be a postprocessor effect, so requires Pro.

3

Sorry…but what i meant was that modifying the final color before it was rendered on a render texture, i was intended to do some color encoding inside the shader itself, which should be taken place just before the color was written to the texture/buffer, so this is not a post effect. The post effect will only deal with the decoding etc.

4

There is no compositing pass. The whole forward approach is built around multiple passes, each of which render to the render target (screen or otherwise).

5

Thanks for the heads up. :slight_smile:

6

Another problem is … how is shadow being managed in the forward pass? I didn’t see any code related to shadow mapping… are they rendered as an independent pass per light as well?

7

Check out Autolight.cginc for the definition of the LIGHT_ATTENUATION macro. It handles everything that makes the lighting equation darker.