Raw File Loader

[maedhros777]

Hello, I'm fairly new to OpenGL, and I've been writing a .raw loader to import models from Blender. Here's my header file: http://docs.google.com/View?id=dd7xssbg_6d52d3qhb, and my source file: http://docs.google.com/View?id=dd7xssbg_7g28pqtd2. When I run this, I get an error saying "Unhandled exception at 0x00000000 in RawModel.exe: 0xC0000005: Access violation reading location 0x00000000." I use Visual C++ and I know that there isn't anything wrong with the .raw file (cube.raw), it's fairly simple. Does anyone know why I'm getting an error, and how I can fix it? Also, if anyone could give me any recommendations of how to write a 3d loader (of basically any format) for OpenGL, that would be great, because I just figured that .raw would be easiest and I don't really understand it very well. Thanks.

[ZbuffeR]

For one thing, run your code on the debugger, so you can pin point the exact line of the segfault.
Probable a too small or uninitialised array.

[maedhros777]

How do I find the error in the debugger?

[trinitrotoluene]

In your main function, you call OpenGL functions before you have a valid rendering context. Don't call OpenGL functions before glutInit.

[maedhros777]

Oh yeah, you're right. I fixed that, but it still gives the same error.

[trinitrotoluene]

I have run your code, but I don't have a 3d raw file to test with. So now, when I run the program, I got an infinite loop somewhere and the program is not responding. Often, when a program crash at address 0x00000000, you are dereferencing a null pointer. So check very carefully the way you create and destroy your memory with new and delete.

[maedhros777]

So you're getting the same error even without the file? I'll have to look back at my code.

[trinitrotoluene]

No , I have now an infinite loop in your model.render function because I don't have a 3D model to load and I cannot verify your code farther.

[maedhros777]

Hm...I think I might just get rid of this code and write a .obj loader or some other 3d format, because I actually don't understand .raw very well. Does anyone recommend a certain format or have a link to any tutorial for creating a loader?

[Jan]

This contains an OBJ and TGA Loader. Feel free to use, modify, ignore, do whatever you want with it.

Jan.