In my previous
thread i was trying to work out why my tangent space normal mapping wasn't working, focussed on my shader. Well i took a step back and made sure that D3DXComputeTangent() was actually creating the tangents and binormals, it isn't. However, it returns S_OK and D3D reports no errors.
Here is the code for creating thenew declaration, cloning and calculation:
D3DXMesh pMesh( pNewModel->GetMesh() );
D3DVERTEXELEMENT9 EndElement = {0xFF,0,D3DDECLTYPE_UNUSED,0,0,0};
D3DVERTEXELEMENT9 CurrentDeclaration[MAX_FVF_DECL_SIZE];
pMesh->GetDeclaration(&CurrentDeclaration[0]);
// Find the end of the declaration and insert space for tangents.
UInt32 EndIndex( 0 );
for ( UInt32 Index( 0 ); Index < MAX_FVF_DECL_SIZE; ++Index )
{
if ( CurrentDeclaration[ Index ].Type == D3DDECLTYPE_UNUSED )
{
EndIndex = Index;
break;
}
}
CurrentDeclaration[ EndIndex + 2 ] = EndElement;
D3DVERTEXELEMENT9& rTangentElement( CurrentDeclaration[EndIndex] );
D3DVERTEXELEMENT9& rBiNormalElement( CurrentDeclaration[EndIndex+1] );
D3DVERTEXELEMENT9& rPreviousElement( CurrentDeclaration[EndIndex-1] );
rTangentElement.Offset = rPreviousElement.Offset + 12;
rTangentElement.Method = D3DDECLMETHOD_DEFAULT;
rTangentElement.Stream = rPreviousElement.Stream;
rTangentElement.Type = D3DDECLTYPE_FLOAT3;
rTangentElement.Usage = D3DDECLUSAGE_TEXCOORD;
rTangentElement.UsageIndex = 1;
rBiNormalElement.Offset = rTangentElement.Offset + 12;
rBiNormalElement.Method = D3DDECLMETHOD_DEFAULT;
rBiNormalElement.Stream = rPreviousElement.Stream;
rBiNormalElement.Type = D3DDECLTYPE_FLOAT3;
rBiNormalElement.Usage = D3DDECLUSAGE_TEXCOORD;
rBiNormalElement.UsageIndex = 2;
D3DXMesh NewMesh;
HRESULT Result = pMesh->CloneMesh( D3DXMESH_VB_MANAGED | D3DXMESH_IB_MANAGED, &CurrentDeclaration[0], m_Device, &NewMesh );
pNewModel->SetMesh( NewMesh );
DWORD* pCharBuffer( new DWORD[3 * NewMesh->GetNumFaces()] );
NewMesh->GenerateAdjacency( 0.0f, pCharBuffer );
D3DXCleanMesh( D3DXCLEAN_BOWTIES , NewMesh, pCharBuffer, &NewMesh, pCharBuffer, NULL );
D3DXCleanMesh( D3DXCLEAN_BACKFACING , NewMesh, pCharBuffer, &NewMesh, pCharBuffer, NULL );
static UInt32 TexStage(0);
static UInt32 TangentStage(0);
static UInt32 BinormalStage(0);
Result = D3DXComputeTangent( pNewModel->GetMesh(), TexStage, TangentStage, D3DX_DEFAULT, TRUE, pCharBuffer );
pNewModel->SetMesh( NewMesh );
if ( Result == D3DERR_INVALIDCALL )
Result = Result;
else if ( Result == D3DXERR_INVALIDDATA )
Result = Result;
NewMesh->GetDeclaration(&CurrentDeclaration[0]);
void* pData( NULL );
NewMesh->LockVertexBuffer( 0, &pData );
if ( pData != NULL )
{
}
NewMesh->UnlockVertexBuffer();
Here is the .x file, a quad:
xof 0303txt 0032
template VertexDuplicationIndices {
<b8d65549-d7c9-4995-89cf-53a9a8b031e3>
DWORD nIndices;
DWORD nOriginalVertices;
array DWORD indices[nIndices];
}
template XSkinMeshHeader {
<3cf169ce-ff7c-44ab-93c0-f78f62d172e2>
WORD nMaxSkinWeightsPerVertex;
WORD nMaxSkinWeightsPerFace;
WORD nBones;
}
template SkinWeights {
<6f0d123b-bad2-4167-a0d0-80224f25fabb>
STRING transformNodeName;
DWORD nWeights;
array DWORD vertexIndices[nWeights];
array float weights[nWeights];
Matrix4x4 matrixOffset;
}
Frame RootFrame {
FrameTransformMatrix {
1.000000,0.000000,0.000000,0.000000,
0.000000,-0.000000,1.000000,0.000000,
0.000000,1.000000,0.000000,0.000000,
0.000000,0.000000,0.000000,1.000000;;
}
Frame Plane {
FrameTransformMatrix {
1.000000,0.000000,0.000000,0.000000,
0.000000,-0.000000,1.000000,0.000000,
0.000000,-1.000000,-0.000000,0.000000,
0.000000,0.000000,0.000000,1.000000;;
}
Mesh {
4;
1.000000; 1.000000; 0.000000;,
-1.000000; 1.000000; 0.000000;,
-1.000000; -1.000000; 0.000000;,
1.000000; -1.000000; 0.000000;;
1;
4; 0, 3, 2, 1;;
MeshMaterialList {
0;
1;
0;;
} //End of MeshMaterialList
MeshNormals {
4;
0.000000; 0.000000; 1.000000;,
0.000000; 0.000000; 1.000000;,
0.000000; 0.000000; 1.000000;,
0.000000; 0.000000; 1.000000;;
1;
4; 0, 3, 2, 1;;
} //End of MeshNormals
MeshTextureCoords {
4;
1.000000;-1.000000;,
0.000000;-1.000000;,
0.000000;-0.000000;,
1.000000;-0.000000;;
} //End of MeshTextureCoords
}
}
}
Here is a screenshot of the pre vertex shader input from PIX:
Any suggestions for why this is happening?
EDIT: On posting realised this PIX output was for a more complicated model, but the same principle applies.
Thanks in advance.
