Celestia Forums

Shadow-Dragon-777 wrote:Yes, but Themis sees the temperature of a place, not how it looks if we looked at it with our eyes.

That's true. That is why I used visible light images for VT layers at 16k, 32k and 64k. THEMIS is perfectly in sync with them at 128k and 256k and THEMIS can show unbelievable details.

Shadow-Dragon-777 wrote:THEMIS IR is infrared though, it will look incorrect to visible light

But it has a 100 meter resolution so if you want real details there is no other data source.

I made a 256k false color dds Mars surface map but it is 38 GB. I used the Mars Odyssey THEMIS-IR data.

Olympus Mons:

OK. Now I can prove, that it is a software bug:



60 fps when there are not too many objects around.



Fps drops dramatically when there are planetary rings around (but why?).



Fps literally dies when the planet feature is on.

I found this text: https://www.mail-archive.com/interest@qt-project.org/msg36622.html Hi, I'm using a third party library (Skia) to render custom opengl code in sync with the QtQuick Scene Graph (Qt 5.15 on Windows 11). I'm using the QQuickFramebufferObject and QSGRenderNode classes to create custom...

Qt is slow for many others, so there must be a reason. Maybe more cpu resources. Gpu resources, whatever. That's a good lead. Celestia 1.6.2.2 consumes 15-25% of the GPU resources. Celestia 1.7 win32 is between 15-30%. But Celestia Qt can reach 40%. And where? At Mars, when the fps is very low. But...

If he already has one it may be failing. So my PC's power supply is failing at Celestia Qt, but it is not failing at Celestia win32? Not likely. As for system settings, I have the computer's power management set to "performance" mode. Thanks for the tips. The problem is that Celestia Qt C...

selden wrote:FWIW, I'm getting 60fps at Mars.
*sigh*

With Qt?

Added after 9 minutes 50 seconds:


?????

Maybe OpenGL and Qt has some kind of problem?

https://forum.qt.io/topic/55199/opengl-vsync-problem

https://forum.qt.io/topic/55119/opengl-in-a-different-thread-in-qt5

cartrite wrote:They should not be using each others dep dll's.

Maybe the problem is in the registry. Are they separated there?

Quite the opposite: every unnecessary file was purged by Bleachbit after I deleted every Celestia folder.

That's why I suspect that reinstalling 1.6.2.2 changed something...

cartrite wrote:If it was a new location and nothing else was added, I'm out of ideas.

I just purged all unnecessary registry data and uninstalled all Celestia versions a few weeks ago.

AND after that I installed your exe file.

I have 4.6.0 GL version. My card was able to achieve 820-941 fps with this test: https://sourceforge.net/projects/openglchecker/ I read about one person who had low frame rates cleaning the card contacts and reinstalling it to get rid of their problem. Also maybe you should take a look at BIOS setti...

cartrite wrote:Could you supply some more info about your hardware

Desktop, 4x3.2Ghz Intel Core, GeForce GTX 1050 Ti, 16 GB RAM, Windows 10 latest build 64 bit.

Built it myself from parts.

Has no problem with high end PC games.

In Celestia: Do you have the hires textures installed? (I don't.) In hardware: What's your screen resolution? 4K, maybe? (Mine's 1080p ) It is a clean install from Cartrite's file, nothing more. It runs in a window at 1080p. I have the latest driver AND I can run almost any modern game with it. I h...

Celestia 1.7 win32 has decent fps rates (35-60), although the DEMO managed to produce only 28 fps at the constellations. Celestia 1.7 qt is unusable . It can produce 60 fps in the interstellar space, but at the neighborhood of planets it is only 20 fps. Close to the planets it sinks to 6-7 fps, like...

What CPU do you have? Celestia is single threaded and runs only on a single core. It's often CPU bound. 4x3.2 Ghz Intel Core, should be enough. With Celestia qt I got 14% CPU load and 35% (!!!!) GPU load, when I was just looking at Earth from a distance (after the startup). The fps is 14 (!!!!). Af...

I wasn't able to crash it again with the "1" key, so it was probably a coincidence.

I managed to crash Celestia win32 1.7 with accidentally pushing the "1" key during startup. Also when running the DEMO, the fps is only 14-15 at the start. Sometimes I can see the software is struggling with my GeForce GTX 1050 Ti to reach 15 fps, which is insane. :insane: In this state th...