Loading Texture from Bitmap object

[maZZoo]

I am working on a project, where I am trying to build a (large) 2D map with Icons on it.

 

This works ok, untill I try to load map file (a 2500x2500 file), then my Texture.FromBitmap function crashes with the error message:

-2005530516 (D3DERR_INVALIDCALL)

in line:

m_TextureHash[ imageName ] = Texture.FromBitmap( m_Device, theImage, 0, Pool.Default );

 

It works if I insted do this:

TextureLoader.FromFile( m_Device, path );

 

But I want to manipulate the Image object, before I load the texture. How can I do this ?

 

Thx in advance,

-maZZoo

[snarfblam]

Have you tried explicitly loading textures into the managed pool? I don't know if that is the problem, but I have seen similar issues.

 

[Vb]

m_TextureHash[ imageName ] = Texture.FromBitmap( m_Device, theImage, 0, Pool.Managed);

[/code]

[maZZoo]

Thx for the idea unfortunally I have tryed that, and it does not seem to work,

maybe its because of the large memory consumsion it requires ?

 

I've gotton this to work (sort of)

 

m_TextureHash[ imageName ] = TextureLoader.FromFile( m_Device, imageName );

 

Only problem is, that it converts the image to a by 2 number ( eg 2048x2048 insted of the original 2500x2500 )

 

So I cannot use that,

Hope that somebody out there have a answer !

 

-maZZoo

[PlausiblyDamp]

It might be worth following the steps in this post to enable debugging of directx and see if any further information is generated.

[nagajim]

Hi Mazzoo,

I'm working on what sounds like a similar project. I have large 2D images (10000x10000) onto which I want to draw additional stationary items and also some moving items. The user can then scroll around this composite image. I ran into similar problems with Textures as powers of 2 and size limitations imposed by my Graphics Card (2048x2048 max).

 

I did think of using DirectDraw but the MSDN warnings plus having to convert my jpg to a bmp to load it made me shy away and plunge into Direct3D.

 

Ken Paulson over at http://www.drunkenhyena.com/ supplied me with the scheme for a solution. (Ken's site is being revamped and I think the DirectX Tutorials are still offline). However, it goes like this:

 

(I have large images now being displayed in a picturebox with the user scrolling them.)

Create a Texture (same size as your picturebox say)

boximage=Textureloader.fromfile(Device,TextureFile)

Create a surface to hold your Map image

backbuffer=graphicsdevice.CreateOffscreenPlainSurface(............

Load your map Image onto this surface

surfaceloader.FromFile(backbuffer,..................

Get a surface from your Texture

imgsurface=boximage.getsurfacelevel(0)

Load this surface with the "visible" part of your Map Image Surface

surfaceloader.FromSurface(imgsurface,backbuffer,.........

Then I use Sprite.Draw2D in my Render routine.

 

This works really well. Now where I'm stuck is in being able to draw lines & rounded boxes on my Map Image surface (ie Backbuffer).

 

Hope this helps.

Edited July 25, 2005 by nagajim