Can you switch between standard and DX8/9 runtime?

[uprize]

Is it possible to switch between standard display mode and DirectX 8 or 9 during runtime?
I would like this to be a toggable option in my game.

If this is possible, how do I check to see what version is running? I have some code in my LUA engine which is specific to HWA and some specific to standard. I want to be able to check which version is running and run the appropriate script accordingly.

Is this possible etiher via MMF or LUA?

[SEELE]

It is, using command line switches.. but i'm on my way out and really don't have time to explain; maybe someone else will :wink:

[Looki]

SEELE, what? He said at runtime, but command line switches are processed when the application starts. You'd have to restart the application.
See this post, you can execute a program with an evaluated path name $apppath$+appname+".exe", command line /D3D8 or /D3D9.

[SEELE]

Looki is right as usual , you would need to restart the application; but if you save first then load immediately you can probably make it pretty smooth.

[uprize]

Yes I know you would have to restart I was expecting that, I will just save the game state temporarily first and then load it upon restart.
Thanks Looki I will check it out.
What about a way of checking which version is running? I could have it start in say standard mode when run for the first time and then if user changes the mode I could write the current mode to an ini file or something, but it would be easier if I could do a simple check upon loading the application instead.

[uprize]

Hi seele, would you be able to make a quick example for me please? Thanks in advance

[SEELE]

Hi, bigredron ... since you'll be using a command switch to change the current display mode; all you need to do is check the string 'CommandLine$' found in the 'special conditions' object to see what command line argument was parsed.

[uprize]

I got it working with the command script, but it keeps loading multiple instances of my program until my pc freezes.

Is there any way I can close the current program once the new one is called? I dont really want to have to run a different exe first and then call the correct display mode from there

EDIT: Never mind, I had 'wait for end' ticked.
Thanks, think its working

[uprize]

How do I detect which version is running upon loading?
Right now all I do is go into an infinite loop as the program keeps restarting because I cant seem to make it check the current mode and change only if it needs to.

[Yves]

In the HWA version you can use the DisplayMode function in the Storyboard object to retrieve the current display mode :

1 = standard
2 = Direct Draw
4 = Direct3D 8
8 = Direct3D 9

Note: this mode may be different from the one you selected in the properties of the application, or in a command line option, as it depends on the graphic card, etc. i.e. you should add a security to avoid the infinite loop you are talking about.