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Blender 5.0

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Re: Blender 5.0

#31

Post by 1220512064 »

gehsty wrote: post #26

I’d really like to see something like blender come for the 3D CAD industry, at the moment it feels like the only people who would lose out are AutoDesk. The amount of money that flows in and out of 3D cad (as subscription and then value created) having a first class open source kernel and tooling, would be giving big industrial players freedom to modify and tailor to their needs as well as smaller / hobbyists get sta…

IDK how they compare to professional CAD tools, but I've heard good things about FreeCAD and OpenSCAD. I know that some people use Blender for CAD work, and there are even some extensions to make it easier, but I'm dubious that the representation of meshes that Blender uses are well-suited for CAD applications.

Re: Blender 5.0

#32

Post by daedrdev »

gehsty wrote: post #26

I’d really like to see something like blender come for the 3D CAD industry, at the moment it feels like the only people who would lose out are AutoDesk. The amount of money that flows in and out of 3D cad (as subscription and then value created) having a first class open source kernel and tooling, would be giving big industrial players freedom to modify and tailor to their needs as well as smaller / hobbyists get sta…

Blender is a decent option for low effort 3d modeling for 3d printing in my experience

Re: Blender 5.0

#33

Post by k1musab1 »

gehsty wrote: post #26

I’d really like to see something like blender come for the 3D CAD industry, at the moment it feels like the only people who would lose out are AutoDesk. The amount of money that flows in and out of 3D cad (as subscription and then value created) having a first class open source kernel and tooling, would be giving big industrial players freedom to modify and tailor to their needs as well as smaller / hobbyists get sta…

FreeCAD is the front-runner for me.

KiCAD was also a meh ECAD FOSS alternative 7-8 years ago, now it is by far the tool of choice for regular ECAD designs. I can see FreeCad getting there by 2030.

Re: Blender 5.0

#34

Post by Uehreka »

1220512064 wrote: post #25
adgjlsfhk1 wrote: post #8

Earlier quoted context omitted.

Yeah. the HDR support is very nice. ACES got their system right the 2nd time around thankfully.

Is this the first blender release where you can change the working color space? I thought that you could in previous versions but it caused issues with some nodes. Now I want to look into it more, but I'd imagine that "Blackbody" and sky generation nodes might still assume a linear sRGB working space.

> Now I want to look into it more, but I'd imagine that "Blackbody" and sky generation nodes might still assume a linear sRGB working space.

Since people are always asking for “real world examples”, I have to point out this is a great place to use an agent like Claude Code or Codex. Clone the source, have your coding assistant run its /init routine to survey the codebase and get a lay of the land, then turn “thinking” to max and ask it “Do the Blackbody attribute for volumes and the sky generation nodes still expect to be working in linear sRGB? Or do they take advantage of the new ACES 2.0 support? Analyze the codebase, give examples and cite lines of code to support your conclusions.”

The best part: I’m probably wrong to assert that linear sRGB and ACES 2.0 are some sort of binary, but that’s exactly the kind of knowledge a good coding agent will have, and it will likely fold an explanation of the proper mental model into its response.

Re: Blender 5.0

#36

Post by 1220512064 »

throwaway290 wrote: post #27
adgjlsfhk1 wrote: post #8

Earlier quoted context omitted.

Yeah. the HDR support is very nice. ACES got their system right the 2nd time around thankfully.

why ACES and not something like P3?

Display P3 (distinct from cinema display P3, because names are hard ig) is used as a render target color space. ACES (and its internal color spaces) are designed as working spaces.

If you make a color space for a display, the intent is that you can (eventually) get a display which can display all those colors. However, given the shape of the human color gamut, you can't choose three color primaries which form a triangle which precisely contain the human color gamut. With a display color space, you want to pick primaries which live inside the gamut; else you'd be wasting your display on colors that people can't see. For a working space, you want to pick primaries which contain the entire human color gamut, including some colors people can't see (since it can be helpful when rendering to avoid clipping).

Beyond that, ACES isn't just one color space; it's several. ACEScg, for example, uses a linear transfer function, and is useful for rendering applications. A colorist would likely transform ACEScg colors into ACEScc (or something of that ilk) so that the response curves of their coloring tools are closer to what they're used it (i.e. they have a logarithmic response similar to old-fashioned analogue telecine machines).

Re: Blender 5.0

#37

Post by LoganDark »

gehsty wrote: post #26

I’d really like to see something like blender come for the 3D CAD industry, at the moment it feels like the only people who would lose out are AutoDesk. The amount of money that flows in and out of 3D cad (as subscription and then value created) having a first class open source kernel and tooling, would be giving big industrial players freedom to modify and tailor to their needs as well as smaller / hobbyists get sta…

Plasticity is the closest thing to this, I think. It uses Parasolid, which Blender does not, and supports xNURBS, which Blender does not.

Re: Blender 5.0

#38

Post by dgroshev »

gehsty wrote: post #26

I’d really like to see something like blender come for the 3D CAD industry, at the moment it feels like the only people who would lose out are AutoDesk. The amount of money that flows in and out of 3D cad (as subscription and then value created) having a first class open source kernel and tooling, would be giving big industrial players freedom to modify and tailor to their needs as well as smaller / hobbyists get sta…

Same, but I don't think it's possible without a large and sustained investment into a free geometric modelling kernel, which can probably be only done by a government.

Parasolid is powering practically every major CAD system. Its development started in 1986 and it's still actively developed. The amount of effort that goes into those things is immense (39 years of commercial development!) and I don't believe it can be done pro-bono in someone's spare time. What's worse, with this kind of software there is no "graceful degradation": while something like a MIP solver can be useful even if it's quite a bit slower than Gurobi, a kernel that can't model complex lofts and fillets is not particularly useful.

3D CAD is much harder than Blender and less amenable to open source development.

Re: Blender 5.0

#40

Post by LoganDark »

daedrdev wrote: post #32
gehsty wrote: post #26

I’d really like to see something like blender come for the 3D CAD industry, at the moment it feels like the only people who would lose out are AutoDesk. The amount of money that flows in and out of 3D cad (as subscription and then value created) having a first class open source kernel and tooling, would be giving big industrial players freedom to modify and tailor to their needs as well as smaller / hobbyists get sta…

Blender is a decent option for low effort 3d modeling for 3d printing in my experience

I use Plasticity to model for 3D printing. Having to worry about polygons in Blender is really annoying.
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