Maxwell Render | Official public forum

3.1 is looking great so far !! , just wondering if you could implement an option for different tonemapping/burn options to go with the film curves. From what I can see maxwell works similarly to modo in this regard, when you burn in an area saturation is increased in it as well it would be nice to have as an "option" for it working more s how vray/corona do it . Which is more like a burn on the luminance without the saturation going crazy. I've posted a macro that was made for fusion if that helps .







{
Tools = ordered() {
CoronaHighlightCompression1 = MacroOperator {
Inputs = ordered() {
MainInput1 = InstanceInput {
SourceOp = "CoronaHighlighCompression",
Source = "Image1",
},
Input1 = InstanceInput {
SourceOp = "CoronaHighlighCompression",
Source = "NumberIn1",
Name = "HighlightCompression",
MinScale = 1,
MaxScale = 10,
},
},
Outputs = {
MainOutput1 = InstanceOutput {
SourceOp = "CoronaHighlighCompression",
Source = "Output",
},
},
ViewInfo = GroupInfo {
Name = "CoronaHighlightCompression",
Pos = { 0, 0, },
},
Tools = ordered() {
CoronaHighlighCompression = Custom {
CtrlWZoom = false,
CtrlWShown = false,
NameSet = true,
Inputs = {
NumberIn1 = Input { Value = 1, },
LUTIn1 = Input {
SourceOp = "CustomTool1LUTIn1",
Source = "Value",
},
LUTIn2 = Input {
SourceOp = "CustomTool1LUTIn2",
Source = "Value",
},
LUTIn3 = Input {
SourceOp = "CustomTool1LUTIn3",
Source = "Value",
},
LUTIn4 = Input {
SourceOp = "CustomTool1LUTIn4",
Source = "Value",
},
RedExpression = Input { Value = "r1 * (1+r1/(n1*n1))/(1+r1)\r\n", },
GreenExpression = Input { Value = "g1 * (1+g1/(n1*n1))/(1+g1)\r\n", },
BlueExpression = Input { Value = "b1 * (1+b1/(n1*n1))/(1+b1)\r\n", },
NumberControls = Input { Value = 1, },
ShowNumber2 = Input { Value = 0, },
ShowNumber3 = Input { Value = 0, },
ShowNumber4 = Input { Value = 0, },
ShowNumber5 = Input { Value = 0, },
ShowNumber6 = Input { Value = 0, },
ShowNumber7 = Input { Value = 0, },
ShowNumber8 = Input { Value = 0, },
PointControls = Input { Value = 1, },
ShowPoint1 = Input { Value = 0, },
ShowPoint2 = Input { Value = 0, },
ShowPoint3 = Input { Value = 0, },
ShowPoint4 = Input { Value = 0, },
LUTControls = Input { Value = 1, },
ShowLUT1 = Input { Value = 0, },
ShowLUT2 = Input { Value = 0, },
ShowLUT3 = Input { Value = 0, },
ShowLUT4 = Input { Value = 0, },
},
ViewInfo = OperatorInfo { Pos = { 1045, 115.5, }, },
},
CustomTool1LUTIn1 = LUTBezier {
KeyColorSplines = {
[0] = {
[0] = { 0, RH = { 0.333333333333333, 0.333333333333333, }, Flags = { Linear = true, }, },
[1] = { 1, LH = { 0.666666666666667, 0.666666666666667, }, Flags = { Linear = true, }, },
},
},
SplineColor = { Red = 204, Green = 0, Blue = 0, },
CtrlWShown = false,
},
CustomTool1LUTIn2 = LUTBezier {
KeyColorSplines = {
[0] = {
[0] = { 0, RH = { 0.333333333333333, 0.333333333333333, }, Flags = { Linear = true, }, },
[1] = { 1, LH = { 0.666666666666667, 0.666666666666667, }, Flags = { Linear = true, }, },
},
},
SplineColor = { Red = 0, Green = 204, Blue = 0, },
CtrlWShown = false,
},
CustomTool1LUTIn3 = LUTBezier {
KeyColorSplines = {
[0] = {
[0] = { 0, RH = { 0.333333333333333, 0.333333333333333, }, Flags = { Linear = true, }, },
[1] = { 1, LH = { 0.666666666666667, 0.666666666666667, }, Flags = { Linear = true, }, },
},
},
SplineColor = { Red = 0, Green = 0, Blue = 204, },
CtrlWShown = false,
},
CustomTool1LUTIn4 = LUTBezier {
KeyColorSplines = {
[0] = {
[0] = { 0, RH = { 0.333333333333333, 0.333333333333333, }, Flags = { Linear = true, }, },
[1] = { 1, LH = { 0.666666666666667, 0.666666666666667, }, Flags = { Linear = true, }, },
},
},
SplineColor = { Red = 204, Green = 204, Blue = 204, },
CtrlWShown = false,
},
},
},
},
ActiveTool = "CoronaHighlightCompression1",
}

Liking the new tonemapping some (most) of the presets look weird, maybe they are buggy?



random render lit with hdri with kodak gold 200 and white point 6000, burn .75 gamma 2.4

Don't get me wrong Eric , I think what they are doing is awesome . I wouldn't want them to get rid of how the burn operator works at the moment, but I'm all for seeing options.

Fairly sure maxwell tone mapping applies the Reinhard operator to the luminance of each pixel rather than the individual color components. Doing it to the individual colour components would have the effect of desaturating colors in brighter areas which I personally would find as a nice option to have . I've always just changed colour spaces etc to whichever ones alleviates the issue the most when facing that problem(oversaturation of burned in information). That has always been a poor solution though as it doesn't really solve the issue.

Some of the film curves are very contrasty (in a nice way) , so I can see me facing this issue more often (needing to burn in highlights) hence me bringing it up.

I just tried fiddling with the settings and fiddling with the hdri file, and the process seemed to make sense / felt right from a creative point of view. It would be nice to understand it, but I dont really need to know how it works..

Heres 2 more wide views with the same settings to show the lighting context, just 5 min renders sl11ish;

Hi Eric,
I think we are possibly talking about different issues, the reason for my post was with regards to the method Maxwell uses for burning in blown out areas and asking for another option on this. Or am I missing your point ?

here is another example top row Maxwell , bottom vray ..

I wasnt making a point. Your point sounds valid, but what do I know, I also dont know that the v-ray comparison has meaning

I guess I was concerned that many of the filters seem whack, and maybe needed checking, a bit like dodgy ior files. I thought this was a general thread about tonemapping, my bad, sorry for disturbance, keep calm and carry on.

no worries , you please carry on as well Eric !! I just wanted to make sure I wasn't misreading your posts ..... I like where you have been going with that scene by the way ,animation next part of it ?

The vray version was just to give an example of a different burn in method

with regards to bugs on the profiles , the tungsten version should appear blue in daylight which they don't and a some of the others do very little .So im sure you are right they have some teething issues.

Just wanted to say that I don't like very much the "filmic" tonemapping in your first post example. It totally killed the highlights which for the impression of metal is very important. Highlight 'clipping' is not always a bad thing, many times those whites should be white