GL_INVALID_OPERATION in Setbuffer(gbuffer)

[Volker]

This error is thrown In renderer.bmx (using framework),if I

 

- create a plane (or cube or sphere) and remove(!) it a bit later

- ONLY if the plane is in view of the camera

- AND if I use some Drawtext(), and then more then once (one line alone is not enough)

- and not always, just 75 percent.

 

 

Code used to crate the plane:

		Global plane:tmesh = createplane()
		If KeyDown(KEY_ENTER)
			DebugLog("plane removed and new created")
			FreeEntity(Plane)
			Plane = CreatePlane()
		End If

 

Adding this code alone does not produce the crash, but..

		Local Vec:TVec3 = Vec3(10, 10, 10)
		Local text:String = "camera"
		DrawText(text + vec.x + vec.z, 100, 10)
		DrawText(text + vec.x + vec.z, 10, 10) 
		DrawText(text + vec.x, 100, 10) 
		DrawText(text + vec.x, 100, 10) 

 

.. if I activate fw.setstats(2) too, it crashes!

 

Sorry, no working example code yet, will do it if there are no ideas.

It took me three days to get near this little ******* of an error.

[Marleys Ghost]

A full working example would be more useful.

[macklebee]

well offhand i don't see how what you posted for the plane has anything to do with the drawtext? Nor do I see any issues with the drawtext other than the fact that you are basically drawing them on top of each other and over the top of the Stats... I placed both snippets in a program and have not had any issues. So I can only guess that maybe there is another issue inside your program that is causing this. Without an example though, we can only guess.

 

On another note, you may want to actually space out your text so they are not writing over the top of each other and the stats...

Local Vec:TVec3 = Vec3(10, 10, 10)
Local text:String = "camera"
DrawText(text + vec.x + vec.z, 0, 100)
DrawText(text + vec.x + vec.z, 0, 120)
DrawText(text + vec.x, 0, 140)
DrawText(text + vec.z, 0, 160)

[Volker]

well offhand i don't see how what you posted for the plane has anything to do with the drawtext? Nor do I see any issues with the drawtext other than the fact that you are basically drawing them on top of each other and over the top of the Stats... I placed both snippets in a program and have not had any issues

Think I did not make it clear enough. The plane creating and deleting code only fails if I use some drawtext() in my code.

Else my projects runs perfectly.

But I see, there is no way then stripping down my project to make an working example.

[macklebee]

Without an example code showing this error, its hard to give a solution. Like I said, I placed your snippets directly into an existing program and I am not getting this error no matter how many times I create/destroy a plane, or drawtext, or what the mode the stats are set at...

[Volker]

Here is the code, did not take as much time as I suposed.

 

Download with all files:

http://www.skopia.de/forum/glinvalid.rar

 

Framework leadwerks.engine
Import "framework.bmx"

RegisterAbstractPath AppDir
Graphics (800, 600) 
Global fw:tframework = createframework()

Local game:TGametest = New TGametest
game.Init()
game.Process()

Type TGametest

Field camera:TEntity

'

Method Init()

	fw.SetStats(2) ' set this to 0 and code works, 2 produces crash

	fw.Main.world.size = Vec3(7000) ' 
	fw.Main.world.SetGravity(Vec3(0, -0.75 * levelscale, -0))

	' a light
	Local light2:TLight = CreateDirectionalLight()
	TurnEntity(light2, Vec3(270, 0, 0))

	' cam
	Local camera:TEntity = fw.Main.camera
	Self.camera = camera
'	CameraZoom(TCamera(Self.camera), 1.90) 

	PositionEntity(Self.camera, Vec3(0, 0, -10))
	CameraRange(TCamera(Self.camera), 1, 200)


End Method

Method Process()

	DebugLog("Press ENTER to produce error!")

	While Not KeyDown(KEY_ESCAPE)
		Global plane:tmesh = CreateSphere ()
		If KeyDown(KEY_ENTER)
			DebugLog("pane removed and new created")
			FreeEntity(Plane)
			Plane = CreateSphere()
			'Delay 1500
			'flushkeys() 
		End If

		' comment this lines out and it will work:
		Local Vec:TVec3 = Vec3(10, 10, 10)
		Local text:String = "camera"
		DrawText(text + vec.x + vec.z, 100, 10) 'fails
		DrawText(text + vec.x + vec.z, 10, 10) ' fails
		DrawText(text + vec.x, 100, 10) 'works
		DrawText(text + vec.x, 100, 10) ' works
		' until here

		fw.Update()

		Self.Render()

		Flip(0)
	Wend
End Method


Method Render()
	fw.Render()
End Method



End Type

[macklebee]

DrawText (and all 2D things) need to be right before Flip.

[Marleys Ghost]

yep as Mack said ..

 

Self.Render()

       ' comment this lines out and it will work:
Local Vec:TVec3 = Vec3(10, 10, 10)
Local text:String = "camera"
DrawText(text + vec.x + vec.z, 100, 10) 'fails
DrawText(text + vec.x + vec.z, 10, 10) ' fails
DrawText(text + vec.x, 100, 10) 'works
DrawText(text + vec.x, 100, 10) ' works
' until here

Flip(0)

[Volker]

Ok, 2D, that was something I could work with.

In my project all 2D-rendering is at the right place,

but something else is different.

New crashing code:

 

http://www.skopia.de/forum/glinvalid2.rar

Framework leadwerks.engine
Import "framework.bmx"

RegisterAbstractPath AppDir
Graphics (800, 600) ', 32)
Global fw:tframework = createframework()

Local game:TGametest = New TGametest
game.Init()
game.Process()

Type TGametest

Field camera:TEntity

'

Method Init()

	fw.SetStats(2) ' set this to 0 and code works, 2 produces crash

	fw.Main.world.size = Vec3(7000) ' 
	fw.Main.world.SetGravity(Vec3(0, -0.75 * levelscale, -0))

	' a light
	Local light2:TLight = CreateDirectionalLight()
	TurnEntity(light2, Vec3(270, 0, 0))

	' cam
	Local camera:TEntity = fw.Main.camera
	Self.camera = camera
'	CameraZoom(TCamera(Self.camera), 1.90) 

	PositionEntity(Self.camera, Vec3(0, 0, -10))
	CameraRange(TCamera(Self.camera), 1, 200)


End Method

Method Process()

	DebugLog("Press ENTER to produce error!")

	While Not KeyDown(KEY_ESCAPE)
		Global plane:tmesh = CreateSphere ()
		If KeyDown(KEY_ENTER)
			DebugLog("pane removed and new created")
			FreeEntity(Plane)
			Plane = CreateSphere()
			'Delay 1500
			'flushkeys() 
		End If


		fw.Update()

		Self.Render()

		Local Vec:TVec3 = Vec3(10, 10, 10)
		Local text:String = "camera"
		DrawText(text + vec.x + vec.z, 100, 10) 'fails
		DrawText(text + vec.x + vec.z, 10, 10) ' fails
		DrawText(text + vec.x, 100, 10) 'works
		DrawText(text + vec.x, 100, 10) ' works
		' comment the draw texts above OR the drawvector below out and code works
		DrawVector("camera", Vec3(10, 10, 10), 200, 10) 'EntityPosition(fw.Main.camera)

		Flip(0)
	Wend
End Method


Method Render()
	fw.Render()
End Method



End Type

Function DrawVector(text:String, vec:TVec3, x:Int, y:Int)
DrawText(Text + ":    " + vec.x + ":    " + vec.y + ":    " + vec.z, x, y)
End Function

[macklebee]

you need to set the garbage collection mode to manual...

Framework leadwerks.engine
Import "framework.bmx"
GCSetMode(2)
RegisterAbstractPath AppDir

[Marleys Ghost]

EDIT: never mind mack got there first

 

EDIT2: but you do need to space out the text ... too cluttered... too hard on the eyes (the text being printed in app)

 

                        Local Vec:TVec3 = Vec3(10, 10, 10)
		Local text:String = "camera"
		DrawText(text + vec.x + vec.z, 10, 100) 'fails
		DrawText(text + vec.x + vec.z, 10, 120) ' fails
		DrawText(text + vec.x, 10, 140) 'works
		DrawText(text + vec.x, 10, 160) ' works
		' comment the draw texts above OR the drawvector below out OR set fw.main.setstats(0), and code works
		DrawVector("camera", Vec3(10, 10, 10), 0, 200) 'EntityPosition(fw.Main.camera)

[macklebee]

EDIT: never mind mack got there first

 

EDIT2: but you do need to space out the text ... too cluttered... too hard on the eyes (the text being printed in app)

 

                        Local Vec:TVec3 = Vec3(10, 10, 10)
		Local text:String = "camera"
		DrawText(text + vec.x + vec.z, 10, 100) 'fails
		DrawText(text + vec.x + vec.z, 10, 120) ' fails
		DrawText(text + vec.x, 10, 140) 'works
		DrawText(text + vec.x, 10, 160) ' works
		' comment the draw texts above OR the drawvector below out OR set fw.main.setstats(0), and code works
		DrawVector("camera", Vec3(10, 10, 10), 0, 200) 'EntityPosition(fw.Main.camera)

 

beat you on the second edit as well here

[Marleys Ghost]

Let mack beat him .. knows how easy Mack bursts into tears lol

[macklebee]

Let mack beat him .. knows how easy Mack bursts into tears lol

 

youve hurt my feelings. im not going to proofread your book any more.

[Marleys Ghost]

youve hurt my feelings. im not going to proofread your book any more.

 

Its 12,592 page numbers you have 10 fingers and 10 toes when was that ever going to be a reality ?

[Volker]

In my project the plane is created every 300 millsecs.

I thought GCCollect() is automatically called every Updateworld().

So it must be called minimum 5 times before a new plane is created.

 

How the hell should I have the idea the garbage collection mode does that?

And how did you got on this?

 

I see the project wizard in 2.3 creates files in which GCSetMode(2) is already done.

Thats good.

[Marleys Ghost]

In my project the plane is created every 300 millsecs.

I thought GCCollect() is automatically called every Updateworld().

So it must be called minimum 5 times before a new plane is created.

 

How the hell should I have the idea the garbage collection mode does that?

And how did you got on this?

 

I see the project wizard in 2.3 creates files in which GCSetMode(2) is already done.

Thats good.

 

 

 

Your welcome.

[Volker]

Sorry, I don't wanted to be offensive.

 

But this one really made me thinking about giving up.

It's not always easy to strip down the code

for the forum.

And I see no solution to prevent something like this

in the future. Perpaps it's a way to be more OOP, so I can disable

big chunks of code for testing.

Will sleep over this.

 

Thanks for your (very fast) help, guys.

[Marleys Ghost]

No problems Volker, not every problem is LE, I think I remember somewhere on the old forum (also still a good resource) that the default GC setting can result in OpenGL commands getting called at any time and causing errors. The solution was to use :

 

GCSetMode(2)