VertexLayoutDesc hash computation

[solan-solan]

• axmol version: dev
• devices test on:
• developing environments
  • NDK version: r23c
  • Xcode version: 14.2+
  • Visual Studio:
    • VS version: 2022 (17.9+)
    • MSVC version: 19.39+
    • Windows SDK version: 10.0.22621.0+
  • cmake version:
    Steps to Reproduce:

There is an issue for me to render two similar objects according to their attributes but different strides. It looks like the issue has gone if stride is taken into account for hash

void VertexLayoutDesc::endLayout(int stride)
{
    if (stride != -1)
        _strides[0] = stride;
    // compute hash
    _hash = XXH32(_bindings.data(), _bindings.size() * sizeof(InputBindingDesc), _strides[0]);
}

[halx99]

In what situations can vertex attribs have exactly the same description but different strides?

[solan-solan]

I see it when some attribute exists for meshVertexData, but is absent for shader.

For example if one mesh can be rendered with two different shaders (materials or technique's inside one material).
Depend on distance it could be the shader with normal mapping and without normal mapping

[halx99]

ok, will improve later