当试图在3D空间中绘制线条与D3DPT_LINELIST
时,Direct3D会给我一个有关无效顶点声明的错误,称它不能转换为FVF
。我使用与我的D3DPT_TRIANGLELIST
渲染完全相同的顶点声明和着色器/流设置。使用D3DPT_LINELIST渲染3D线
如何使用D3DPT_LINELIST
在3D空间中渲染某些线条?
这是我的原始绘图调用。
D3DCALL(device->SetVertexDeclaration(VertexDecl));
D3DCALL(device->SetStreamSource(1, PerBoneBuffer.get(), 0, sizeof(PerInstanceData)));
D3DCALL(device->SetStreamSourceFreq(1, D3DSTREAMSOURCE_INSTANCEDATA | 1));
D3DCALL(device->SetStreamSource(0, LineVerts, 0, sizeof(D3DXVECTOR3)));
D3DCALL(device->SetStreamSourceFreq(0, D3DSTREAMSOURCE_INDEXEDDATA | lines.size()));
D3DCALL(device->SetIndices(LineIndices));
PerInstanceData* data;
std::vector<Wide::Render::Line*> lines_vec(lines.begin(), lines.end());
D3DCALL(PerBoneBuffer->Lock(0, lines.size() * sizeof(PerInstanceData), reinterpret_cast<void**>(&data), D3DLOCK_DISCARD));
std::for_each(lines.begin(), lines.end(), [&](Wide::Render::Line* ptr) {
data->Color = D3DXColor(ptr->Colour);
D3DXMATRIXA16 Translate, Scale, Rotate;
D3DXMatrixTranslation(&Translate, ptr->Start.x, ptr->Start.y, ptr->Start.z);
D3DXMatrixScaling(&Scale, ptr->Scale, 1, 1);
D3DXMatrixRotationQuaternion(&Rotate, &D3DQuaternion(ptr->Rotation));
data->World = Scale * Rotate * Translate;
});
D3DCALL(PerBoneBuffer->Unlock());
D3DCALL(device->DrawIndexedPrimitive(D3DPRIMITIVETYPE::D3DPT_LINELIST, 0, 0, 2, 0, 1));
这里是我的顶点声明:
D3DVERTEXELEMENT9 BasicMeshVertices[] = {
{0, 0, D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0},
{1, 0, D3DDECLTYPE_FLOAT4, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_TEXCOORD, 0},
{1, 16, D3DDECLTYPE_FLOAT4, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_TEXCOORD, 1},
{1, 32, D3DDECLTYPE_FLOAT4, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_TEXCOORD, 2},
{1, 48, D3DDECLTYPE_FLOAT4, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_TEXCOORD, 3},
{1, 64, D3DDECLTYPE_FLOAT4, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_COLOR, 0},
D3DDECL_END()
};
D3DCALL(Device->CreateVertexDeclaration(
BasicMeshVertices,
PointerToPointer(BasicMeshVertexDecl)
));
的LineIndices
只是0, 1
和LineVerts
只是{0,0,0}
和{1,0,0}
,代表沿X轴的单位3D线。
你可以发布你的调用CreateVertexDeclaration(),SetVertexDeclaration()和相关的顶点着色器代码的代码吗? – Asaf 2012-03-29 21:35:24
@Asaf:给我一秒找到那些特定的作品。 – Puppy 2012-03-29 21:50:06