I found an artifact on the RT_MULTI_PASS. You can see the screenshots attached to this topic.
My video card is ATI Radeon HD 3400 Series with latest drivers(today installed).
And my simple questions is "What is this? How can i repair it?". Maybe this problem of my video card.

Hello,

This problem looks like a vide card or driver issue.

What things could you check:
-that the video card is not overclocked
-does the error appear only when there is water on the scene?
-testing the scene on a different computer
-do you have problems in other games or 3d apps?
-you could try uninstalling all drivers, rebooting computer, reinstalling latest drivers

Hi

I have checked up things about which you spoke.
- the video card is not overclocked
- the error appear not only when the water on the scene
- a scene on the my previous screenshots from water tutorial. Problem appear only on a "ATI Radeon HD 3400 Series". I have checked up the scene on NVIDIA GeForce 9800GTX, NVIDIA GeForce 7600M and NVIDIA 7600GT, that's all right.
- i did not find out similar problems in other games or applications.
- the reinstalling of last drivers has not solved the problem.

I have made new screenshots of my own small game. On a first screenshot switched on a RT_MULTI_PASS mode, on a second screenshot switched on a RT_SINGLE_PASS mode. World without a water.

I see, could you play around with the engine options. like disable shadows, disable bloom, disable hardware depth buffer (d.hwDepth..) and all other options
So we could narrow down the problem?

There is high possibility that only one element is causing the problem with your video card.

Thanks

Hi

D.hwDepthBuffer(false) resolved this problem.

Thank you for the information,

Could you do this:

in Display.h header file remove the "private:" line (in struct Display)

then in any code (for example in your game)
paste this code into the main Bool Init() function

and take the screenshot of the message box that will appear?
This will show me the description of your video card.
and I will be able to disallow D.hwDepthBuffer on all this kind of cards.
So you will no longer experience the problem, (including in the World Editor)

Thanks

I have made a screenshot.

Thanks, in the next engine release I'll disable hwDpethBuffer for those kinds of cards, and tools (World Editor) should work ok