Nodes: Compositor and Eevee renders skip implicit type conversions in some cases #54777
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Reference: blender/blender#54777
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System Information
Win10 64bit
Blender Version
Broken: 2.79
Short description of error
RGB To BW node is active when muted
Exact steps for others to reproduce the error
Open file and render
RGB_BW.blend
Added subscriber: @SergeL
#81280 was marked as duplicate of this issue
#70064 was marked as duplicate of this issue
Added subscriber: @LazyDodo
can confirm on windows, somehow the material view works correctly, but the actual render doesn't.
Added subscribers: @brecht, @lichtwerk
same is true for
Separate RGBbtw.Had a quick look and it seems that on the blender side the internal links are set up correctly (going from color input to the value/float output), but something breaks when cycles inserts/evaluates its
ConvertNode.When the out socket type is not the same as the one linked to the input socket it seems to fail (but dont know enough of the internals here)
Also tried something like P662, but that makes things even worse... Would like to spend more time on this, but hitting my timelimit for now and would like to pass this on to @brecht?
Added subscriber: @padthai
Added subscribers: @EmmanuelLORANT, @JacquesLucke, @fclem, @tomjk
RGB To BW node is active when mutedto Cycles RGB To BW node is active when mutedAdded subscriber: @JoshuaKnauber
I just wanted to get some focus back on this, as I just stumbled upon this and was about to report it with the Math node. As mentioned in the duplicate I think the Eevee way makes more sense and it should be the same in Cycles.
Removed subscriber: @fclem
Added subscribers: @zzzzzig-2, @mano-wii
Cycles RGB To BW node is active when mutedto Some Cycles nodes are active when muted (RGB To BW, Math, vector Math, Separate RGB)I can confirm this issue for Blender 3.0-4.0
Geometry Nodes an Cycles render behavior is correct. Even if node is muted, link and socket are displayed as data type that should be used for values. EEVEE and compositor render have this inconsistency and should be fixed.
This also is there for node group sockets (see: #120648).
Some Cycles nodes are active when muted (RGB To BW, Math, vector Math, Separate RGB)to Nodes: Compositor and Eevee renders skip implicit type conversions in some cases