Solved

Unhandled exception during GetFVF

Posted on 2008-10-08
1
420 Views
Last Modified: 2013-12-26
Hello experts,

I'm pretty new to DirectX and Direct3D so it's all still a bit confusing.
I've been given a pre-made "engine" that can easily create and transform several shapes.

When I make a box or teapot it works but when I make anything else I get an unhandled exception in the Draw function of the Mesh at m_pDXMesh->GetFVF()

Anyone have any ideas?
Thanks in advance.
void MeshShape::Init()
{
	//default material color is white
	SetMaterialColor(1,1,1,1);
 
	switch(m_Type)
	{
	case BOX:
		D3DXCreateBox(GETDEVICE,m_a,m_b,m_c,&m_pDXMesh,0);
		break;
	case SPHERE:
		D3DXCreateSphere(GETDEVICE,m_a,(UINT)m_b,(UINT)m_c,&m_pDXMesh,0);
		break;
	case TEAPOT:
		D3DXCreateTeapot(GETDEVICE,&m_pDXMesh,0);
		break;
	case TORUS:
		D3DXCreateTorus(GETDEVICE,m_a,m_b,(UINT)m_c,(UINT)m_d,&m_pDXMesh,0);
		break;
	case CYLINDER:
		D3DXCreateCylinder(GETDEVICE,m_a,m_b,m_c,(UINT)m_d,(UINT)m_e,&m_pDXMesh,0);
		break;
	default:
		D3DXCreateBox(GETDEVICE,1,1,1,&m_pDXMesh,0);
	}
}
 
void MeshShape::Draw() 
{
    GETDEVICE->SetMaterial( &m_Mtrl );
	GETDEVICE->SetTransform( D3DTS_WORLD, &m_FinalWorld );
 
        // THIS LINE GIVES UNHANDLED EXCEPTION
	GETDEVICE->SetFVF( m_pDXMesh->GetFVF() ); 
	m_pDXMesh->DrawSubset(0);
}
 
 
 
void MultiMeshBasisApp::BuildScene()
{
	// This works
	m_pFloor = new MeshShape(MeshShape::BOX,10,0.1f,10);
	m_pFloor->SetMaterialColor(0.6f,0.6f,0.6f,1.0f);
	m_pFloor->Translate(0,-2,4);
	m_pFloor->Draw();
	
 
	// This works too
	m_pTeapot = new MeshShape(MeshShape::TEAPOT,1.0f,2.0f,1.0f);
	m_pTeapot->SetMaterialColor(1.0f,1.0f,0.1f,1.0f);
	m_pTeapot->Translate(3.0f,0.0f,6.0f);
	m_pTeapot->Draw();
 
	// This doesn't
	m_pCylinder = new MeshShape(MeshShape::TORUS,1.0f,2.0f,1.0f);
	m_pCylinder->SetMaterialColor(0.05f,0.2f,0.9f,1.0f);
	m_pCylinder->Translate(0,0,0);
	m_pCylinder->Draw(); // <- Here's the problem
 
}

Open in new window

0
Comment
Question by:Snapples
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 11

Accepted Solution

by:
jgordos earned 500 total points
ID: 22674178
This is a SWAG, since you don't show the entire program.

You seem to be using global variables, and reusing them, too.

I can think of a lot of things that might be wrong.

Try the following:
See if you can draw the cylinder/torus if you DON'T draw the others....

I.E., change BuildScene to look like this...

void MultiMeshBasisApp::BuildScene()
{
      // This doesn't
      m_pCylinder = new MeshShape(MeshShape::TORUS,1.0f,2.0f,1.0f);
      m_pCylinder->SetMaterialColor(0.05f,0.2f,0.9f,1.0f);
      m_pCylinder->Translate(0,0,0);
      m_pCylinder->Draw(); // <- Here's the problem
}

The next thing i'd try, if that still doesn't work, is to change the call where you build the mesh....

Try hard coding known good values in for hte parameters...  you might be asking the code to build something that isn't quite Kosher, so the resultant mesh is incorrect.

Try changing
D3DXCreateTorus(GETDEVICE,m_a,m_b,(UINT)m_c,(UINT)m_d,&m_pDXMesh,0);
to
D3DXCreateTorus(GETDEVICE,1.0,1.0,1,1,&m_pDXMesh,0);

And then, lastly, you talk about drawing a cylinder, but you're really drawing the torus.

Do you mean this ?

m_pCylinder = new MeshShape(MeshShape::CYLINDER,1.0f,2.0f,1.0f);

-john


0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Ready to improve network connectivity? Watch this webinar to learn how SD-WANs and a one-click instant connect tool can boost provisions, deployment, and management of your cloud connection.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The following diagram presents a diamond class hierarchy: As depicted, diamond inheritance denotes when two classes (e.g., CDerived1 and CDerived2), separately extending a common base class (e.g., CBase), are sub classed simultaneously by a fourt…
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
In this video, viewers are given an introduction to using the Windows 10 Snipping Tool, how to quickly locate it when it's needed and also how make it always available with a single click of a mouse button, by pinning it to the Desktop Task Bar. Int…
Add bar graphs to Access queries using Unicode block characters. Graphs appear on every record in the color you want. Give life to numbers. Hopes this gives you ideas on visualizing your data in new ways ~ Create a calculated field in a query: …

728 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question