Did a lot of shader improvements this week! First, I upgraded my material/lighting system from plastic-y phong shading to a more modern PBR (physically based rendering) shading technique. Then as I was adding PBR material textures (thanks FreePBR!) I noticed a lot of them had heightmaps, so not wanting to discard those, I also added Parallax Occlusion Mapping (POM)! While I was mucking around in the shaders, I also increased the simultaneous light limit by making some optimizations! I also fixed the cloud shapes and added a bit of detail... the cloud shader is raymarched and actually supports a really high level of detail, but I can't run it that high at a good enough framerate with a whole scene of other stuff rendering too because I just have a 1060. Next I need to rework the shadows because they're super inefficient, you can see the framerate jump up 10-15 frames when the sun goes down and the engine doesn't draw sun shadows anymore. Maybe I should not draw shadows for the grass? I notice most games don't have grass casting shadows. Oh but first I need to finish setting up PBR material textures for the cat and the trees, as you can see they're currently shiny af.
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