Function copyKeys

src/lib/libwebgl.js:3561–3563

(dst, src)

#if GL_EXPLICIT_UNIFORM_BINDING
    function copyKeys(dst, src) {
      for (var key of Object.keys(src)) { dst[key] = src[key] };
    }
    // Collect sampler and ubo binding locations from the vertex and fragment shaders.
    program.explicitUniformBindings = {};
    program.explicitSamplerBindings = {};