Method SearchForInvalidTextures

code/PostProcessing/ValidateDataStructure.cpp:490–591

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// ------------------------------------------------------------------------------------------------
void ValidateDSProcess::SearchForInvalidTextures(const aiMaterial *pMaterial,
        aiTextureType type) {
    const char *szType = aiTextureTypeToString(type);

    // ****************************************************************************
    // Search all keys of the material ...
    // textures must be specified with ascending indices
    // (e.g. diffuse #2 may not be specified if diffuse #1 is not there ...)
    // ****************************************************************************

    int iNumIndices = 0;
    int iIndex = -1;
    for (unsigned int i = 0; i < pMaterial->mNumProperties; ++i) {
        aiMaterialProperty *prop = pMaterial->mProperties[i];
        ai_assert(nullptr != prop);
        if (!::strcmp(prop->mKey.data, "$tex.file") && prop->mSemantic == static_cast<unsigned int>(type)) {
            iIndex = std::max(iIndex, (int)prop->mIndex);
            ++iNumIndices;

            if (aiPTI_String != prop->mType) {
                ReportError("Material property %s is expected to be a string", prop->mKey.data);
            }
        }
    }
    if (iIndex + 1 != iNumIndices) {
        ReportError("%s #%i is set, but there are only %i %s textures",
                szType, iIndex, iNumIndices, szType);
    }
    if (!iNumIndices) {
        return;
    }
    std::vector<aiTextureMapping> mappings(iNumIndices);

    // Now check whether all UV indices are valid ...
    bool bNoSpecified = true;
    for (unsigned int i = 0; i < pMaterial->mNumProperties; ++i) {
        aiMaterialProperty *prop = pMaterial->mProperties[i];
        if (static_cast<aiTextureType>(prop->mSemantic) != type) {
            continue;
        }

        if ((int)prop->mIndex >= iNumIndices) {
            ReportError("Found texture property with index %i, although there "
                        "are only %i textures of type %s",
                    prop->mIndex, iNumIndices, szType);
        }

        if (!::strcmp(prop->mKey.data, "$tex.mapping")) {
            if (aiPTI_Integer != prop->mType || prop->mDataLength < sizeof(aiTextureMapping)) {
                ReportError("Material property %s%i is expected to be an integer (size is %i)",
                        prop->mKey.data, prop->mIndex, prop->mDataLength);
            }
            mappings[prop->mIndex] = *((aiTextureMapping *)prop->mData);
        } else if (!::strcmp(prop->mKey.data, "$tex.uvtrafo")) {
            if (aiPTI_Float != prop->mType || prop->mDataLength < sizeof(aiUVTransform)) {
                ReportError("Material property %s%i is expected to be 5 floats large (size is %i)",
                        prop->mKey.data, prop->mIndex, prop->mDataLength);
            }