Practical sessions

Here are some ideas if you want to get a deeper insight into the glTF format:

• Change the lightPos and lightColor fragment shader variables into uniform variables, and make them adjustable via sliders in the user interface. You could use two SliderFloat3 ImGui elements – one for the color, and the other one for the position.
• Load a binary glTF model. A link to sample models is included in the Additional resources section. The tinygltf loader has a function to load binary models, called LoadBinaryFromFile(); you should use the filename extension to switch between textual (.gltf) and binary (.glb) model format loading.
• Try to load the textures of the binary models. The textures are not stored as separate files but included in the binary model file. Compared to the normal file-based method, this should be easier, as you will get the texture data to upload to the GPU as part of one of the glTF buffers – no need to load from files.
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