HDR frame buffer blending

[Christian Schüler]

When will it be there?

[Humus]

You mean blending on a float buffer? Well, maybe next HW generation.

[Christian Schüler]

I think that float-rendering is not truly useful without FB-blending.

Think of adding the contributions of multiple lightsources that cast shadows, like in Doom3. You *could* emulate that with a ping-pong render to texture, but what about ...

... a true HDR particle system. Like RTT for each particle? Oops

[Humus]

No doubt it's useful. But then again, you can't have everything you want. Chip space it limited, so sometimes you have to settle for something not quite as good.