Setbuffer where did it go?

Where did it go to my wee Barry Burtons? I remember arsing around with Blitz+ and being able to draw to the desktop by going Setbuffer(Desktopbuffer()) or something like that. Is that not achievable in BlitzMax GUI? What would Rebecca Chambers say?

Do a search for that topic

It's not achievable in BlitzMAX period. No such thing as imagebuffers.

Oh yes there is, you can render to a texture!

Function Render2Image(image:TImage)
	Local DXFrame:TDX7ImageFrame = TDX7ImageFrame (image.frame(0))
	PrimaryDevice.Device.SetRenderTarget DXFrame.Surface,0
End Function

Only thing is I have not had the time to get the handle to the backbuffer so I can change it back again :) So it's a one-way solution at the moment.

It's the price we pay for having hardware accelerated graphics in bmax. There are -very slow- ways to do it though.

it's stinky. One way haha.

what?

Just ignore him. =]


Can we have an OpenGL version of that function as well, pretty please? ;]

= stinky



= one way haha

Oh I am so stupid muuuhhhhaaa.

Strict

Function Render2Image(image:TImage,frame:int=0)
	Local DXFrame:TDX7ImageFrame = TDX7ImageFrame (image.frame(frame))
	PrimaryDevice.Device.SetRenderTarget DXFrame.Surface,0
End Function

Function Render2BackBuffer()
	PrimaryDevice.Device.SetRenderTarget PrimaryDevice.backbuffer,0
End Function

Switch it baby!

{EDIT} Now with multiframe render :D

Hmm, Tim have you got a simple example as I'm sure I have this wrong...

Strict

Function Render2Image(image:TImage,frame:Int=0)
	Local DXFrame:TDX7ImageFrame = TDX7ImageFrame (image.frame(frame))
	PrimaryDevice.Device.SetRenderTarget DXFrame.Surface,0
End Function

Function Render2BackBuffer()
	PrimaryDevice.Device.SetRenderTarget PrimaryDevice.backbuffer,0
End Function
Graphics 640,480
Global myimage:TImage=LoadImage("max.png")
While Not KeyHit(KEY_ESCAPE)
  Cls
  If MouseHit(1)
     render2image(myimage)
     DrawRect 0,0,40,40
  EndIf
   render2backbuffer()
  DrawImage myimage,0,0
  Flip
Wend

Like I said I have not finished this yet, the above code will swap the target but I think there is something else that needs to happen, a bit like the old Renderworld command in B3D.

Function Renderworld()
	PrimaryDevice.Device.EndScene()
	PrimaryDevice.Device.BeginScene()
End Function

Still don't work though.

Hey if you click in the window then the white square flashes up!

Yep, but it doesn't get saved as part of the image which is what I thought it would do.

Just figured how to do this. I'll post an example when it's working as it should.