Exported Image looks different

Hello!

I want to use Writer (Ex9.Texture Grid) to export as an image. I connected the view and projection transform from the camera to the Writer. Because I use a different global blend mode, I made a new pin at the Writer and connected the input blendmode(ColorAsAlphaAdd) with Blend and GlobalRenderState in the Writer. The preview windows shows exactly the same shape as the standart renderer, but the rendered image is much brighter. I think the blending doesn’t work.
Can someone tell me what i did wrong?

Thanks in advantage.

render_vs_render_preview.v4p (24.2 kB)

You have to render the layer output before you send it to the Writer then it works with the blendmodes. I attached the modified working patch.

render_vs_render_preview_modified.v4p (25.7 kB)