Tell that to our artists 😉.
As a coder I’m all for procedurally generated content. I did replace several heavy textures in our games by procedural materials, to squeeze out a couple of extra MB.
However, that’s not the way artists traditionally work. They often don’t have the programming knowledge needed to develop procedural materials on their own, and would need to rely on technical artists or programmers to do so. Drawing a texture however, is very much part of their skillset…
But yeah, the mention of “squeezing out a couple of MB” brings me to another topic, namely that (at least in our games) the on-disk textures are only part of the RAM usage, and a relativley small one on comparison. In the games I worked on, meshes made up a significantly larger amount of RAM usage. We have several unique assets, which need to fulfill a certain quality standard due to licensing terms, such that in the end we had several dozens of meshes, each over 100 MB, that the player can freely place… Of course there would still be optimization potential on those assets, but as always, there’s a point where further optimization hits diminishing returns…
In the end we had to resort to brute-force solutions, like unloading high quality LODs for meshes even if they are relatively close to the player… Not the most beautiful solution, but luckily not often needed during normal gameplay (that is: if the player doesn’t intentioally try to make the game go out-of-memory).
But I’m rambling.
The tl;dr is: The memory constraints would not be a big deal if there was enough time/money for optimization. If there is one thing that’s never enough in game dev, it’s time/money.
OK so this is now offtopic for the conversation, but…
However, that’s not the way artists traditionally work.
To some extent, it’s authoring tools which affect how they work. A procedural materials pipeline can help them compose on top of already procedural content. In a way, you could see PBR as a part of that pipeline because PBR materials are physics modelled. Having said that I do take your point, even building out that pipeline takes time. Creating a PBR materials library is not super easy, and obviously organic stuff is very hard to model as a material.
meshes made up a significantly larger amount of RAM usage
From watching blender modelling, I thought the pattern was to have minimal rigging on the base mesh and then tesselation via normal maps + subdivision (apparently this is very doable even with sculpting). Obviously for animation you need a certain quality but beyond that I thought everything would be normal maps, reflection maps, etc etc.
I’m not an artist - my 3D modelling experience can be summed up as “none”, so I can’t really answer your last point.
I know for certain that we don’t use normal maps to the extent they could be used, and therefore have way more detail in the meshes than they would need to have. I’m also pretty certain that we don’t do any tesselation on player pawns, and I think (but am not certain) that this is due to some engine limitation (again, don’t quote me on that, but iirc Unreal doesn’t support tesselation on skeletal meshes on all our target platforms).
TIL for no tessellation on skeletal meshes. I hope over time Unreal / Epic will put some effort in on minimising memory usage, even though I know they “just” got done with Nanite and friends.
Tell that to our artists 😉. As a coder I’m all for procedurally generated content. I did replace several heavy textures in our games by procedural materials, to squeeze out a couple of extra MB. However, that’s not the way artists traditionally work. They often don’t have the programming knowledge needed to develop procedural materials on their own, and would need to rely on technical artists or programmers to do so. Drawing a texture however, is very much part of their skillset…
But yeah, the mention of “squeezing out a couple of MB” brings me to another topic, namely that (at least in our games) the on-disk textures are only part of the RAM usage, and a relativley small one on comparison. In the games I worked on, meshes made up a significantly larger amount of RAM usage. We have several unique assets, which need to fulfill a certain quality standard due to licensing terms, such that in the end we had several dozens of meshes, each over 100 MB, that the player can freely place… Of course there would still be optimization potential on those assets, but as always, there’s a point where further optimization hits diminishing returns… In the end we had to resort to brute-force solutions, like unloading high quality LODs for meshes even if they are relatively close to the player… Not the most beautiful solution, but luckily not often needed during normal gameplay (that is: if the player doesn’t intentioally try to make the game go out-of-memory).
But I’m rambling. The tl;dr is: The memory constraints would not be a big deal if there was enough time/money for optimization. If there is one thing that’s never enough in game dev, it’s time/money.
OK so this is now offtopic for the conversation, but…
To some extent, it’s authoring tools which affect how they work. A procedural materials pipeline can help them compose on top of already procedural content. In a way, you could see PBR as a part of that pipeline because PBR materials are physics modelled. Having said that I do take your point, even building out that pipeline takes time. Creating a PBR materials library is not super easy, and obviously organic stuff is very hard to model as a material.
From watching blender modelling, I thought the pattern was to have minimal rigging on the base mesh and then tesselation via normal maps + subdivision (apparently this is very doable even with sculpting). Obviously for animation you need a certain quality but beyond that I thought everything would be normal maps, reflection maps, etc etc.
I’m not an artist - my 3D modelling experience can be summed up as “none”, so I can’t really answer your last point. I know for certain that we don’t use normal maps to the extent they could be used, and therefore have way more detail in the meshes than they would need to have. I’m also pretty certain that we don’t do any tesselation on player pawns, and I think (but am not certain) that this is due to some engine limitation (again, don’t quote me on that, but iirc Unreal doesn’t support tesselation on skeletal meshes on all our target platforms).
TIL for no tessellation on skeletal meshes. I hope over time Unreal / Epic will put some effort in on minimising memory usage, even though I know they “just” got done with Nanite and friends.