Same airport, weather, date and time (15:56:16) in both FSX-SE and Prepar3d v2.5. All shadows are turned on in P3Dv2 (ULTRA quality). In the FSX-SE I see on the ground ahead the shadows of the tail rudder and the front of the Boeing. I think this is apparently correct because the sun at that time is positioned behind the jet, but in Prepar3d v2.5 the shadows does not exist. In which simulator the shadows is correct?Same airport, weather, date and time (15:56:16) in both FSX-SE and Prepar3d v2.5. All shadows are turned on in P3Dv2 (ULTRA quality). In the FSX-SE I see on the ground ahead the shadows of the tail rudder and the front of the Boeing. I think this is apparently correct because the sun at that time is positioned behind the jet, but in Prepar3d v2.5 the shadows does not exist. In which simulator the shadows is correct?

 

FSX-SE

 

 

P3Dv2.5

 

 

Best regards!

 

 

do you have all of the shadow receive boxes checked?

What do the ground shadows do to performance?

Same airport, weather, date and time (15:56:16) in both FSX-SE and Prepar3d v2.5. All shadows are turned on in P3Dv2 (ULTRA quality). In the FSX-SE I see on the ground ahead the shadows of the tail rudder and the front of the Boeing. I think this is apparently correct because the sun at that time is positioned behind the jet, but in Prepar3d v2.5 the shadows does not exist. In which simulator the shadows is correct?Same airport, weather, date and time (15:56:16) in both FSX-SE and Prepar3d v2.5. All shadows are turned on in P3Dv2 (ULTRA quality). In the FSX-SE I see on the ground ahead the shadows of the tail rudder and the front of the Boeing. I think this is apparently correct because the sun at that time is positioned behind the jet, but in Prepar3d v2.5 the shadows does not exist. In which simulator the shadows is correct?

 

 

Best regards!

One time is not the same, the FSX-SE shot is 20:59z and the P3D shot is 20:00z. That could definitely affect shadow position. Did you have shadows activated using the DX10Fixer for the FSX-SE shot? (Not sure if you are also questioning VC shadows) From that shot, it doesn't look like they are. What airport did you use? I can do a comparison shot from my system if you would like. (FSX-SE)

 

Tom Cain

I found using DX10 Fixer in FSX the shadows (all of them) absolutely killed my FPS thats one of the reasons why I switched, for good, to P3D, never looking back I am more than happy.

If I remember well, P3D provides the shadow of the model that is active, therefore when you are inside the cockpit you see only the cockpit shadow, not the airplane shadow, that you can see instead when you look at the airplane from outside.

just curious. you say it is the same airport, but there are different buildings at these airports. are they both stock airports? i thought the scenery in p3d was the same as in fsx? thanks.

Looking at it the difference in buildings it is just the FSX default vs the P3D default (P3D being more detailed as its the startup scenario) .

As for shadows I would say P3D is more accurate but it maybe as James said, P3D isn't showing outside shadows only VC ones. I believe its all down to the settings. There are many different settings for shadows in P3D. P3D as far as i'm aware does everything FSX does but better, plus more

Jepp, mr james is correct

If I remember well, P3D provides the shadow of the model that is active, therefore when you are inside the cockpit you see only the cockpit shadow, not the airplane shadow, that you can see instead when you look at the airplane from outside.

If that's true, then that's not realistic, and appears to be a shortfall in P3D, as FSX in DX10 can display both shadows at the same time. Question is, is it by design or is it a bug?

 

Tom Cain

I found using DX10 Fixer in FSX the shadows (all of them) absolutely killed my FPS thats one of the reasons why I switched, for good, to P3D, never looking back I am more than happy.

 

There are settings in DX10 fixer that will almost eliminate shadow fps hits. In fact they make almost no difference at all on my system, including internal cockpit shadows, whereas with P3d 2.5 it is the exact opposite to your experience! There is a "force walls" option in the DX10 fixer which forces the self shadowing on to effectively a "slab" in the VC, and as I understand it, this means the shadow does not have to render all the bits and pieces like switches and knobs.

 

The other important thing is to choose the option that eliminates clouds from being Sparse Grid aliased. That improves fps a lot.

 

In P3d I find internal shadowing absolutely kills performance - not necessarily raw frame rates - but in the sluggish response to the flight model and panning. There is no doubt the Sparse Grid Super Sampling is the culprit. On low or medium power cpus and graphics cards P3d cannot handle SGSS. 

 

One alternative is to use DSR and up sample the resolution to 2x or 3x times then let your monitor down sample it to native resolution. That way you can lower both AA settings and still get a nearly shimmer free image.

If that's true, then that's not realistic, and appears to be a shortfall in P3D, as FSX in DX10 can display both shadows at the same time. Question is, is it by design or is it a bug?

 

 

Tom Cain

This isn't correct. Wish I read this before my flight last night. Taxiing into KLEX in the Turbine Duke there was a full aircraft shadow in the ground when I turned back to the sun from virtual cockpit view. prepar3d 2.5

 

 

This isn't correct. Wish I read this before my flight last night. Taxiing into KLEX in the Turbine Duke there was a full aircraft shadow in the ground when I turned back to the sun from virtual cockpit view. prepar3d 2.5

 

Maybe at LM they managed to get a full shadow with v 2.5. I don't have P3D, it would be good if who owns it could check this, also with the PMDG aircraft.

This isn't correct. Wish I read this before my flight last night. Taxiing into KLEX in the Turbine Duke there was a full aircraft shadow in the ground when I turned back to the sun from virtual cockpit view. prepar3d 2.5

There is a big difference between the Duke and a PMDG aircraft.  PMDG is much more complex and they purposely omit the exterior model when you are in the cockpit model.