There are 3 buffers

std::vector< vec3 > verticies; std::vector< vec2 > tcoords; std::vector< vec3 > normals;

When creating the Vertex buffer, filling in the D3D11_SUBRESOURCE_DATA structure specifies the pointer to the array from which the D3D11 buffer will be created

 vData.pSysMem = verticies.data(); // сюда нужно послать ещё tcoords и normals

The problem is that there are three arrays, and the pointer is needed 1.

I tried type designs

 struct Vertex{ Vertex(){} Vertex( vec3* _pos, vec2* _texCoord, vec3* _norm){ pos = _pos; texCoord = _texCoord; norm = _norm; } vec3* pos; vec2* texCoord; vec3* norm; }; std::vector< Vertex > verts; this->verts.push_back( Vertex( verticies.data(), tcoords.data(), normals.data() )); vData.pSysMem = this->verts.data();

somehow unsuccessfully

Maybe there are other ways, for example, using the features of C ++, or Direct3D 11 itself? On OpenGL, individual functions create everything without problems, but there is something else in the D3D11?

    1 answer 1

    On the knee something like this:

     #include <iostream> #include <vector> #include <algorithm> struct A { A( int p_a ) : _a( p_a ) {} int _a; }; using VecSrcData = std::vector<A>; using VecPtrSrcData = std::vector<A const*>; class B { public: template<size_t N> B( VecSrcData* const ( &vecs )[N] ) { size_t commonSize = 0; std::for_each( vecs, vecs + N, [&commonSize]( VecSrcData const* vec ) { commonSize += vec->size(); }); std::cout << "\ncommon_size=" << commonSize << std::endl; m_srcPData.reserve( commonSize ); /*for( size_t j = 0; j < N; ++j ) { for( size_t i = 0; i < vecs[j]->size() ; ++i ) { std::cout << "\nnum:" << i; m_srcPData.push_back( &( vecs[j]->at(i) ) ); } } */ std::for_each( vecs, vecs + N, [this]( VecSrcData const* vec ) { for( VecSrcData::const_iterator it = vec->cbegin(); it != vec->cend(); ++it ) m_srcPData.push_back( &(*it) ); }); } VecPtrSrcData m_srcPData; void show() { for( VecPtrSrcData::const_iterator it = m_srcPData.begin(); it != m_srcPData.end(); ++it ) { std::cout << "\nEl[" << it - m_srcPData.begin() << "] = " << (*it)->_a; } } }; int main() { VecSrcData srcDataA( 10, A( 2 ) ); VecSrcData srcDataB( 20, A( 3 ) ); VecSrcData srcDataC( 10, A( 4 ) ); VecSrcData* vecs[] = { &srcDataA, &srcDataB, &srcDataC }; B b = B( vecs ); b.show(); getchar(); return 0; }