In case you are new to the conversation, the first thing you should know is that Unity and Unreal Engine are two of the most prominent engines used for software development today. What Was the State of Unity and Unreal Engine In Previous Years? We’ve analyzed the facts in order to help you make an informed decision regarding the development of your next project. Sweeping changes have affected both engines recently, and in light of the massive interest studios and businesses have shown toward building apps with Unity or Unreal Engine development, we decided to revisit the topic. Though just a few years have passed since then, this is an eon in the fast-changing world of software development.
The discussion grew so fierce that we wrote an entire piece about the two engines and how they were showing their stripes. In 2015, Unity and Unreal Engine were the hottest titles in the game development industry, spurring discussion and comparisons anywhere they were mentioned. Check out the lit Toon Outline shader in 3.0 resources for example: it's a surface shader followed by UsePass that does black extruded outline.Īlso, perhaps post your shader that you have troubles with here, maybe it's possible to optimize it without resorting to multipass rendering.Considering the massive interest studios and businesses have shown toward building apps with Unity or Unreal Engine, we decided to revisit the facts to help you make an informed choice in the development of your next project. Surface shaders just generate a bunch of passes behind the scenes, so if you put manually written passes, UsePasses or just two surface shaders next to each other, it will result in multiple passes. If you still can't fit into one pass, and need to split into multiple passes, that is generally possible. Compiling shaders to shader model 3.0 (#pragma target 3.0) also increases number of interpolators available from 8 to 10. main texture normal map usually use the same), use one uv* variable in surface shader input.
Tricks to save interpolators: if you use multiple textures, and you know they don't need different UV scale/offset (e.g. Usually what burns a lot of interpolators is per-pixel normal mapped reflection (needs 3 interpolators to pass tangent space vectors). Yeah, you might be hitting the limit of texture interpolators (you can see what Cg source is generated by adding #pragma debug and opening the compiled shader in inspector).
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