Function DisplayMemoryConsumption

tools/assimp_view/MessageProc.cpp:612–724

------------------------------------------------------------------------------- Display memory statistics -------------------------------------------------------------------------------

// Display memory statistics
//-------------------------------------------------------------------------------
void DisplayMemoryConsumption() {
    // first get the memory consumption for the aiScene
    if (! g_pcAsset ||!g_pcAsset->pcScene) {
        MessageBox(g_hDlg,"No asset is loaded. Can you guess how much memory I need to store nothing?",
            "Memory consumption",MB_OK);
        return;
    }
    unsigned int iScene = sizeof(aiScene);
    for (unsigned int i = 0; i < g_pcAsset->pcScene->mNumMeshes;++i) {
        iScene += sizeof(aiMesh);
        if (g_pcAsset->pcScene->mMeshes[i]->HasPositions())
            iScene += sizeof(aiVector3D) * g_pcAsset->pcScene->mMeshes[i]->mNumVertices;

        if (g_pcAsset->pcScene->mMeshes[i]->HasNormals())
            iScene += sizeof(aiVector3D) * g_pcAsset->pcScene->mMeshes[i]->mNumVertices;

        if (g_pcAsset->pcScene->mMeshes[i]->HasTangentsAndBitangents())
            iScene += sizeof(aiVector3D) * g_pcAsset->pcScene->mMeshes[i]->mNumVertices * 2;

        for (unsigned int a = 0; a < AI_MAX_NUMBER_OF_COLOR_SETS;++a) {
            if (g_pcAsset->pcScene->mMeshes[i]->HasVertexColors(a)) {
                iScene += sizeof(aiColor4D) * g_pcAsset->pcScene->mMeshes[i]->mNumVertices;
            } else {
                break;
            }
        }
        for (unsigned int a = 0; a < AI_MAX_NUMBER_OF_TEXTURECOORDS;++a) {
            if (g_pcAsset->pcScene->mMeshes[i]->HasTextureCoords(a))
                iScene += sizeof(aiVector3D) * g_pcAsset->pcScene->mMeshes[i]->mNumVertices;
            else break;
        }
        if (g_pcAsset->pcScene->mMeshes[i]->HasBones()) {
            for (unsigned int p = 0; p < g_pcAsset->pcScene->mMeshes[i]->mNumBones;++p) {
                iScene += sizeof(aiBone);
                iScene += g_pcAsset->pcScene->mMeshes[i]->mBones[p]->mNumWeights * sizeof(aiVertexWeight);
            }
        }
        iScene += (sizeof(aiFace) + 3 * sizeof(unsigned int))*g_pcAsset->pcScene->mMeshes[i]->mNumFaces;
    }
    // add all embedded textures
    for (unsigned int i = 0; i < g_pcAsset->pcScene->mNumTextures;++i) {
        const aiTexture* pc = g_pcAsset->pcScene->mTextures[i];
        if (0 != pc->mHeight) {
            iScene += 4 * pc->mHeight * pc->mWidth;
        } else {
            iScene += pc->mWidth;
        }
    }
    // add 30k for each material ... a string has 4k for example
    iScene += g_pcAsset->pcScene->mNumMaterials * 30 * 1024;

    // now get the memory consumption required by D3D, first all textures
    unsigned int iTexture = 0;
    for (unsigned int i = 0; i < g_pcAsset->pcScene->mNumMeshes;++i) {
        AssetHelper::MeshHelper* pc = g_pcAsset->apcMeshes[i];

        AddTextureMem(pc->piDiffuseTexture,iTexture);
        AddTextureMem(pc->piSpecularTexture,iTexture);