Brno BVE Website

What did the passengers say about that?

I think I've learned my first lesson of how to swear in Czech!

If you need any translation, do not hesitate to ask.

I did notice the cab darkening in the tunnels, which you hadn't done before, so you haven't messed up!

OK then,

I would bet I had not put the txt in the download though... strange.

Due to absolute lack of feedback / reactions the development has been suspended until further notice.

Hello guys,

there is a new video that should explain you the signs in the route. If you are interested, take a look. I suggest watching it in full screen mode. well, once Youtube processes it, that is.

You're clearly better at building than at driving Get better soon!

Great idea of doing such a route knowledge/signal explanation video!

A lot of the signs remind me of the german railways

Northern Line wrote:A lot of the signs remind me of the german railways

Well, we are neighboring countries after all, so the differences might not be big.

Right, 

on the 13th of October I have placed an announcement on my website asking for help with testing the optimized route - the purpose was to enable more people to be actually able to play it. There has been no response whatsoever (despite approx. 50 site views per day).

Have a good day everyone.

Sorry, I'm not watching websites regularly. The boards are a better place for such requests IMHO. 50 views can easily be achieved by crawler bots (Google etc.), especially if the view counter is rather primitive. From my nearly decade of webmastering experience pageviews are a) waaay higher than and b) not particularily correlating to unique visitors. A unique visitor can easily generate dozens of pageviews at a time.

I wouldn't mind helping with the testing but sure not what this involves, though I only have limited time I want to spend on this. I not sure whether my computer specs are what you are after for testing but mine is:

CPU:Intel® Core™ i5 processor 480M,2.66GHz, 1066MHz FSB, 3MB L2 Cache (Dual Core)
Operating System: Windows® 7 Home Premium 64bit   
Memory: 4GB DDR3 (1066MHz)
Graphics: ATI Mobility Radeon™ HD 5650 (2295MB Total: 1GB discrete memory + 1271MB shared memory

I ran the route and with fps values in brackets with the CPU at maximum. It took 65 seconds to load.

5 fps (11) upon loading. At the start I get 5 to 6 fps (13-14) This slowly improves to 7 to 9 (20) at 3000m. Through the tunnel I get 10 (22). This improves to about 10 to 14 (25-29). It then droped to 9 to 11 (20 to 23) at Senice. Then dropped to about 7 to 9 (13-17) in the tunnel and to 4 to 8 from 7500m. It improved to 7-8 at Vroanov -jih. 5 to 7 (14-15) after this station and  8 in aprroach to Vroanov and at the station. 9 to 10 (18-22) after the station. 10 to 11 from 11km but dropping to 5 to 8 (12-14) afterwards from 11.5km (after the tunnel). Dropped to 4-5 (8-9) at Lipnice nad Sivou and after the station. 3 to 5 (7 to 8 ) on approach and through Lipnice nad Sivou Haje. After the station it was 3 (4-6) and to 2 (5-6) at 14km and dropping to 1 (2-4) at 17km and right through to the last station.

I did download and run this version after you released it in June with the same results compared to the above results. But just to make sure I did delete and re downloaded the files.

Thanks, Matt, exactly what I needed. From those values I assume the route is more or less unplayable for you, correct?
Later today, I will send you a pm with links to the optimized version. I will be more than happy if you do the same with it.

Well it is bearable but at the end when the frame rates get very low it is not playable as it very hard to control the train. But it certainty would be more enjoyable with higher frame rates with the hardware I have. I look forward to testing your optimized version.

Ok - waiting!  

Phil

I ran your optimized version with fps values in brackets with the CPU at maximum. This version is a better but there are sections particularly the end where the fps is rather low.

It took 60 seconds to load and at the start of the route I got 7 to 9 fps (14-20). This increases to 8 to 11 (15-23) after the station and further to 15 to 20 (33-50) from 1500m. From 2500m I get 15 to 23 (45-50). Then from the tunnel and through the tunnel I get 33-41(69-80). This continues after the tunnel dropping slightly to 25-35 from 4500m to through to Senice. 19-24 through the tunnel and 15-21 (30-35) after the tunnel and dropping to 10-19 (23-26)from 6500m. This dropped to 7-11 (14-17)soon after and continued thorugh to Vranov jih and 5 to 8 (14-18)through the station. 7 to 9 after the station and improving slightly to 7 to 10 (18-21) on approach to Vranov. 10-13 (29-32) through Vranov. 13-20 (38-43) after station and 17-21 (38-42) through the tunnel. 13-19 (30-34) after tunnel. 11-14 (20-22) from 11700m and 8-14(18-21 on approach to Lipnice nad Divou and 6-7 (7-11) though the station. 4-6 (10-12) after station and through to Lipnice nad Divou Haje. 3-4 (6- after station and 3 (6-7) from 14000m dropping to 2-3 from 16500m and to 2 (4-5) from 17000m and through to Deblin.

Bit of a mixed bag Dexter.

I used OBVE 1.4.3.1-dev dated 24/08, full screen with an interpolation of mipmapping (if that makes any difference).

Loading time was 25 seconds.

Stationary at Brno - 45 fps average.
between Brno and the 50kph limit sign 25 to 40 fps

1.0k             77fps
1.2k           104fps

then to 2.0k average over 100fps although at 2.0kfps were 60. In the following tunnel fps were between 117 and 162!

3.6k        139fps dropping to 125fps by 4.2k.

Fps stayed over 100 until 5.2k then dropped to 91

5.6k         75fps
6.0k         50fps
6.4k         37fps
7.0k         28fps
7.4k         22fps

After Vranov (stop 50fps) things pick up -

Between 9.2k (56 fps) and 9.8k (97fps) then drop off

10.4k       70fps
11.4k       40fps
12.0        25fps.

Between Lipnice nad Sivou and Lipnice nad Haje fps vary between 15 and 23.

13.2k to 13.8k        23fps down to 11fps
14.0k to 14.4k        9 to 10fps then up to 20fps at 15.8k

After 16.0k fps went from 13 down to 8 at 16.2k and then down to a steady 6fps at 16.6k until 5fps at Deblin

I did find an unexpected extra station Dolni Skalky had appeared at about 13k. That was a surprise, particularly to be told off for not stopping.

Much better at the beginning that the first version I tried and more fps at the end, still 'stuttering' at several quite random places though.

Looking forward to trying the next version - anything more you want to know about this run or do you want me to try it again with an earlier OBVE version?

Phil

Dexter wrote:

Cheers guys,

I have managed to start the optimization of the route - part 2. I have identified what causes the heavy lagging at the end of the route. Unsurprisingly, it is caused by the vegetation (that's what I though earlier), but it is not the trees, it is the dense bushes alongside the tracks. The question now is how to deal with this, since I do not want to use plain grass only...

Sorry for possible typos, my daughter is assisting me with me with typing... and also with scrolling the mouse, clicking random stuff etc. Just in case you thought I am mad...

Whilst I haven't got the optimized version, a few thoughts based on the current release version:
Your bushes are always going to be *nasty*

A brief explanation as to why:
Faces using transparency must be rendered in order from the back of the scene to the front of the scene.
Each time the texture changes, GL.BindTexture must be called to change the texture being drawn. This is the slowest call the engine makes.
Look at the attached screenshot (Screenshot.jpg)

You're probably binding the texture ~100 times a frame, as you, which is the cause of your slowdown, as your transparent bushes change texture every ~5m along the track.
The easiest way to speed these up would be to change all the bushes to the same texture, and drop in a periodic different bush to break up the monotony.

An alternative, and better approach would be to make a basic texture atlas.
This is very simple:
Take both of your bush textures, and combine into a single texture file. (Texture.jpg is a very quick example, although this isn't intended for use)
Depending on whether you need your bushes to tile vertically or horizontally, just use the other axis.
Now, use a little basic texture mapping, so that all the bushes use this texture
Suddenly, your 100 calls to GL.BindTexture drop to one!

Notes:
You want one line of transparent pixels at the top, bottom and in between the two textures.
This prevents 'bleeding' between the two textures.

Cheers

Chris Lees

http://www.bvecornwall.co.uk