message: gltfio: fix unbound texture warnings in ubershader mode.
diff: @@ -82,7 +82,6 @@ public:
  #define MATINDEX(shading, alpha) (int(shading) + 3 * int(alpha))
  UbershaderLoader::UbershaderLoader(Engine* engine) : mEngine(engine) {
  - #ifdef EMSCRIPTEN
  unsigned char texels[4] = {};
  mDummyTexture = Texture::Builder()
  .width(1).height(1)
  @@ -91,7 +90,6 @@ UbershaderLoader::UbershaderLoader(Engine* engine) : mEngine(engine) {
  Texture::PixelBufferDescriptor pbd(texels, sizeof(texels), Texture::Format::RGBA,
  Texture::Type::UBYTE);
  mDummyTexture->setImage(*mEngine, 0, std::move(pbd));
  - #endif
  }
  size_t UbershaderLoader::getMaterialsCount() const noexcept {
  @@ -179,11 +177,6 @@ MaterialInstance* UbershaderLoader::createMaterialInstance(MaterialKey* config,
  mi->setParameter("clearCoatNormalUvMatrix", identity);
  #endif
  - // Some WebGL implementations emit a warning at draw call time if the shader declares a sampler
  - // that has not been bound to a texture, even if the texture lookup is conditional. Therefore we
  - // need to ensure that every sampler parameter is bound to a dummy texture, even if it is never
  - // actually sampled from.
  - #ifdef EMSCRIPTEN
  TextureSampler sampler;
  mi->setParameter("normalMap", mDummyTexture, sampler);
  mi->setParameter("baseColorMap", mDummyTexture, sampler);
  @@ -193,7 +186,6 @@ MaterialInstance* UbershaderLoader::createMaterialInstance(MaterialKey* config,
  mi->setParameter("clearCoatMap", mDummyTexture, sampler);
  mi->setParameter("clearCoatRoughnessMap", mDummyTexture, sampler);
  mi->setParameter("clearCoatNormalMap", mDummyTexture, sampler);
  - #endif
  return mi;
  }
  