Method CreateVBuffer

GTE/Graphics/MeshFactory.cpp:1248–1283

}

std::shared_ptr<VertexBuffer> MeshFactory::CreateVBuffer(uint32_t numVertices)
{
    auto vbuffer = std::make_shared<VertexBuffer>(mVFormat, numVertices);
    if (vbuffer)
    {
        // Get the position channel.
        mPositions = GetGeometricChannel(vbuffer, VASemantic::POSITION, 1.0f);
        LogAssert(mPositions != nullptr, "Positions are required.");

        // Get the optional geometric channels.
        mNormals = GetGeometricChannel(vbuffer, VASemantic::NORMAL, 0.0f);
        mTangents = GetGeometricChannel(vbuffer, VASemantic::TANGENT, 0.0f);
        mBitangents = GetGeometricChannel(vbuffer, VASemantic::BINORMAL, 0.0f);

        // Get texture coordinate channels that are to be assigned values.
        // Clear the mAssignTCoords element in case any elements were set by a
        // previous mesh factory creation call.
        std::set<uint32_t> required;
        required.insert(DF_R32G32_FLOAT);
        for (uint32_t unit = 0; unit < VAConstant::MAX_TCOORD_UNITS; ++unit)
        {
            mTCoords[unit] = vbuffer->GetChannel(VASemantic::TEXCOORD, unit, required);
            if (mTCoords[unit])
            {
                mAssignTCoords[unit] = true;
            }
            else
            {
                mAssignTCoords[unit] = false;
            }
        }

        vbuffer->SetUsage(mVBUsage);
    }
    return vbuffer;
}

std::shared_ptr<IndexBuffer> MeshFactory::CreateIBuffer(uint32_t numTriangles)
{