Your question is very similar to this one: WebAssembly only supports i32 / i64 / f32 / f64 value types as well as i8 / i16 for storage. This means that you can’t pass in pointers. What you’re doing is totally sane when you’re coming from a C++ point of view (no need to apologize … Read more
Did you set the canvas to be non-premultilied? gl = someCanvas.getContext(“webgl”, { premultipliedAlpha: false }); The default for WebGL is true. The default for most OpenGL apps is false On top of that WebGL is composited with the rest of the page. At a minimum that’s the background color of the canvas or whatever it’s … Read more
The expected format of Module.cwrap does allow for ‘array’s to be passed into the function, but will assert on result and fail if you attempt to return an array displayArrayA=Module.cwrap(‘displayArray’,’array’,[‘array’]) displayArrayA([1,2,3]) // Assertion failed: ccallFunc, fromC assert(type != ‘array’) A second restriction of this is that incoming arrays are expected to be byte arrays, meaning … Read more