Method setImageFromMemory

interface/js_binding/ktx_wrapper.cpp:320–352

        }

        ktx_error_code_e setImageFromMemory(ktx_uint32_t level,
                                            ktx_uint32_t layer,
                                            ktx_uint32_t faceSlice,
                                            const val& jsimage)
        {
            std::vector<uint8_t> image{};
            image.resize(jsimage["byteLength"].as<size_t>());
            val memory = emscripten::val::module_property("HEAP8")["buffer"];
            val memoryView = jsimage["constructor"].new_(memory,
                                               reinterpret_cast<uintptr_t>(image.data()),
                                               jsimage["length"].as<uint32_t>());
            // Yes, this code IS copying the data. Sigh! According to Alon
            // Zakai:
            //     "There isn't a way to let compiled code access a new
            //     ArrayBuffer. The compiled code has hardcoded access to the
            //     wasm Memory it was instantiated with - all the pointers it
            //     can understand are indexes into that Memory. It can't refer
            //     to anything else, I'm afraid."
            //
            //     "In the future using different address spaces or techniques
            //     with reference types may open up some possibilities here."
            memoryView.call<void>("set", jsimage);
            ktx_error_code_e result;
            result = ktxTexture_SetImageFromMemory(m_ptr.get(),
                                                   level, layer, faceSlice,
                                                   image.data(), image.size());

            if (result != KTX_SUCCESS) {
                std::cout << "ERROR: Failed to setImageFromMemory: " << ktxErrorString(result) << std::endl;
            }
            return result;

        }

        ktx_error_code_e compressAstc(const ktxAstcParams& params_input)
        {