Add support for (fast?) memory_view objects. If C++ passes a memory_view to JS, it gets converted into a typed array object on the other side. Intended for WebGL.

1 files changed, 19 insertions, 0 deletions

diff --git a/tests/embind/embind_test.cpp b/tests/embind/embind_test.cpp
index 23761efc..e8ca0338 100644
--- a/tests/embind/embind_test.cpp
+++ b/tests/embind/embind_test.cpp
@@ -1148,6 +1148,25 @@ EMSCRIPTEN_BINDINGS(interface_tests) {
     function("callDifferentArguments", &callDifferentArguments);
 }
 
+template<typename T, size_t sizeOfArray>
+constexpr size_t getElementCount(T (&)[sizeOfArray]) {
+    return sizeOfArray;
+}
+
+static void callWithMemoryView(val v) {
+    // static so the JS test can read the memory after callTakeMemoryView runs
+    static unsigned char data[] = { 0, 1, 2, 3, 4, 5, 6, 7 };
+    v(memory_view(getElementCount(data), data));
+    static float f[] = { 1.5f, 2.5f, 3.5f, 4.5f };
+    v(typed_memory_view(getElementCount(f), f));
+    static short s[] = { 1000, 100, 10, 1 };
+    v(typed_memory_view(getElementCount(s), s));
+}
+
+EMSCRIPTEN_BINDINGS(memory_view_tests) {
+    function("callWithMemoryView", &callWithMemoryView);
+}
+
 class HasExternalConstructor {
 public:
     HasExternalConstructor(const std::string& str)