Invisible geometry :( D3D vertex prob?

Hey, all im trying to do is make a simple cube in DirectX 9. However, despite it all compiling i have inivisble geometry. I have my lights switched on, materials set etc. So that leads me to think its a prob when I set my vertices, the code is:

Code:

---

bool CGfxEntityCube::Initialise()
{
gD3dDevice->CreateVertexBuffer(8*sizeof(CUBEVERTEX), D3DUSAGE_WRITEONLY, D3DFVF_CUBEVERTEX, D3DPOOL_MANAGED, &m_vb, NULL);

CUBEVERTEX pVertices[]={{ 0.0, 0.0, 0.0,},
                                                { 0.0, 1.0, 0.0,},
                                                { 1.0, 0.0, 0.0,},
                                                { 1.0, 1.0, 0.0,},
                                                { 1.0, 0.0, 1.0,},
                                                { 1.0, 1.0, 1.0,},
                                                { 0.0, 0.0, 1.0,},
                                                { 0.0, 1.0, 1.0,}};

VOID *vertices;

m_vb->Lock(0, sizeof(pVertices), (void**)&vertices, 0);

memcpy(vertices, pVertices, sizeof(pVertices));

m_vb->Unlock();

gD3dDevice->CreateIndexBuffer(36*3*2, D3DUSAGE_WRITEONLY, D3DFMT_INDEX16, D3DPOOL_MANAGED, &m_ib, NULL);

WORD pIndices[]={0, 1, 2,
                                2, 1, 3,
                                2, 3, 4,
                                4, 3, 5,
                                4, 5, 6,
                                6, 5, 7,
                                6, 7, 0,
                                0, 7, 1,
                                1, 7, 3,
                                3, 7, 5,
                                0, 2, 6,
                                2, 4, 6};

VOID *indices;

m_ib->Lock(0, sizeof(pIndices), (void**)&indices, 0);

memcpy(indices, pIndices, sizeof(pIndices));

m_ib->Unlock();

return TRUE;
}

---

Is that ok? any other ideas where im going wrong?

All i want is a simple life, a life of OpenGL ;)

When you are creating your index buffer why are you passing 36 * 3 * 2 ?? just pass sizeof(pIndices) instead. This is a lot more flexible and I don't know why you multiplied it by 3? I'd have to see some more code to see what else might be wrong.

I'm no expert with DirectX, but I think I found your problem. I checked all your verticies and all your indicies, and those look correct, and they are wound correctly. I think the problem lies in these lines

Code:

---

VOID *vertices;

m_vb->Lock(0, sizeof(pVertices), (void**)&vertices, 0);

memcpy(vertices, pVertices, sizeof(pVertices));

---

and

Code:

---

VOID *indices;

m_ib->Lock(0, sizeof(pIndices), (void**)&indices, 0);

memcpy(indices, pIndices, sizeof(pIndices));

---

It appears to me that you are declaring void pointers named verticies and indicies, and then you are using them to store data? Unless m_ib->lock allocates some memory for your operations, you are going to run into some serious, serious problems with the pointers...once again, I'm not a DirectX expert, but if your problem is that you aren't allocating memory, at least it's easy to fix.

Quote:

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Originally posted by blackrat364
I'm no expert with DirectX, but I think I found your problem. I checked all your verticies and all your indicies, and those look correct, and they are wound correctly. I think the problem lies in these lines

Code:

---

VOID *vertices;

m_vb->Lock(0, sizeof(pVertices), (void**)&vertices, 0);

memcpy(vertices, pVertices, sizeof(pVertices));

---

and

Code:

---

VOID *indices;

m_ib->Lock(0, sizeof(pIndices), (void**)&indices, 0);

memcpy(indices, pIndices, sizeof(pIndices));

---

It appears to me that you are declaring void pointers named verticies and indicies, and then you are using them to store data? Unless m_ib->lock allocates some memory for your operations, you are going to run into some serious, serious problems with the pointers...once again, I'm not a DirectX expert, but if your problem is that you aren't allocating memory, at least it's easy to fix.

---

Thats not the problem. When you call CreateIndexBuffer and CreateVertexBuffer you specify the size and Direct3D will allocate the storage for you.

My bad. Sorry, disregard my previous post.

Quote:

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why are you passing 36 * 3 * 2 ?? just pass sizeof(pIndices) instead

---

I didnt use sizeof, since at that point pIndices doesnt have a size. But it would be better.

The debugger is giving an error:
Direct3D9: (ERROR) :All attenuation factors are 0 for non-directional light
Direct3D9: (ERROR) :SetLight failed.

But i think this code is ok, so im unsure why its fails:

Code:

---

void CVisualisation::CreateDirectionalLight()
{
// Fill in a light structure defining our light
D3DLIGHT9 light;
D3DXVECTOR3 vecDir;

ZeroMemory(&light, sizeof(D3DLIGHT9));

light.Type=D3DLIGHT_DIRECTIONAL;
light.Diffuse.r=0.6f;
light.Diffuse.g=0.6f;
light.Diffuse.b=0.6f;
 
vecDir=D3DXVECTOR3(0.0f,-0.3f,-0.5);
 
D3DXVec3Normalize((D3DXVECTOR3*)&light.Direction, &vecDir);

// Tell the device about the light and turn it on
light.Range=1000.0f;
gD3dDevice->SetLight(0, &light);
gD3dDevice->LightEnable(0, TRUE);

}

void CVisualisation::CreatePointLight(const D3DVECTOR &pos)
{
// Fill in a light structure defining our light
D3DLIGHT9 light;

ZeroMemory(&light, sizeof(D3DLIGHT9));

light.Type=D3DLIGHT_POINT;
light.Diffuse.r=1.0f;
light.Diffuse.g=1.0f;
light.Diffuse.b=1.0f;
 
// Point lights have no direction but do have a position
light.Position=pos;
 
// Tell the device about the light and turn it on
light.Attenuation0=0.0f;
light.Range=200.0f;
gD3dDevice->SetLight(1, &light);
gD3dDevice->LightEnable(1, TRUE);

}

---

For your point light you need to set the attenuation to a non-zero value. Do this..

Code:

---

light.Attenuation0 = 1.0f;

---

This value is ignored for directional lights but all of the attenuations for non-directinal lights should never all be zero.

EDIT:
Which light is failing? I'm assuming the point light. Why don't you translate the HRESULT and find out what the error message is. That will probably be the most helpful.

I found the problem, there was a problem with the light attentuation as pointed out and also with my matrices, the projection matrix was messed up somehow. So after all that i now have a big black blob on my screen, rewarding huh! :P