The use of HDR lighning without shaders. It's possible!

Since our engine still has no shader support I tryed to make a HDR test. So here is the result.

I still need to blur the image to the lighning is not so "cubic".


And some other results I from tweaking it:
http://necrodome.homeftp.net/zooi/hdr.jpg
http://necrodome.homeftp.net/zooi/HDR2.jpg
http://necrodome.homeftp.net/zooi/HDR3.jpg
http://necrodome.homeftp.net/zooi/Hdr4.jpg
http://necrodome.homeftp.net/zooi/hdroverkill.jpg

How it's done:
1. Render scene to texture (SceneTextre)
2. Render SceneTexture to a small texture (256x256) with some blending
- FDevice.SetRenderState(D3DRS_SRCBLEND, D3DBLEND_ZERO);
- FDevice.SetRenderState(D3DRS_DESTBLEND, D3DBLEND_SRCCOLOR);
3. Render the SceneTexture to the screen
4. Add the 256x256 texture to the screen

ps. Sorry for the BIG image