Function getMaterialParamsPython

Source/Falcor/Scene/Scene.cpp:4193–4214

Get serialized material parameters for a list of materials. * \param materialIDsBuffer Buffer containing material IDs * \param paramsBuffer Buffer to write material parameters to */

    *   \param paramsBuffer Buffer to write material parameters to
    */
    inline void getMaterialParamsPython(Scene& scene, ref<Buffer> materialIDsBuffer, ref<Buffer> paramsBuffer)
    {
        // Get material IDs from buffer.
        FALCOR_CHECK(materialIDsBuffer->getStructSize() == sizeof(uint32_t), "Material IDs buffer must contain uint32_t elements.");
        std::vector<uint32_t> materialIDs = materialIDsBuffer->getElements<uint32_t>();

        // Fetch material parameters.
        std::vector<float> params;
        params.reserve(materialIDs.size() * SerializedMaterialParams::kParamCount);
        for (uint32_t materialID : materialIDs)
        {
            SerializedMaterialParams tmpParams = scene.getMaterial(MaterialID(materialID))->serializeParams();
            params.insert(params.end(), tmpParams.begin(), tmpParams.end());
        }

        // Write material parameters to buffer.
        FALCOR_CHECK(paramsBuffer->getSize() >= params.size() * sizeof(float), "Material parameter buffer is too small.");
        paramsBuffer->setBlob(params.data(), 0, params.size() * sizeof(float));
#if FALCOR_HAS_CUDA
        scene.getDevice()->getRenderContext()->waitForFalcor();
#endif
    }

    /** Set serialized material parameters for a list of materials.
    *   \param materialIDsBuffer Buffer containing material IDs