Global delta xy

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1 year 10 months ago - 6 months 1 day ago #1 by crabshank
Global delta xy was created by crabshank
Allows global increase and decrease of a channel:


That middle point goes up and down the dashed line, meaning that every value in the channel is higher or lower than it otherwise would be, except 0 and 1.
0 and 1 stay fixed where they are.


Also allows increase of red, green or blue independently of brightness with the option of excluding selected hue ranges.

Download  here
Last edit: 6 months 1 day ago by crabshank. Reason: Urgent fixes
The following user(s) said Thank You: jas01, Faustus86

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1 year 10 months ago #2 by crabshank
Replied by crabshank on topic Global delta
I figured out that the best use of this shader is for tint removal after using the White Point shader, as there have been many occasions where there has been a red tint even with an an optimal white point.

I also suggest using Distance_to_grey.fx after this one to act as a debugging/calibration tool.

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1 year 10 months ago #3 by Faustus86
Replied by Faustus86 on topic Global delta

I figured out that the best use of this shader is for tint removal after using the White Point shader, as there have been many occasions where there has been a red tint even with an an optimal white point.

I also suggest using Distance_to_grey.fx after this one to act as a debugging/calibration tool.


Exactly what i need right now. Thank you =)
The following user(s) said Thank You: crabshank

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1 year 8 months ago #4 by crabshank
Replied by crabshank on topic Global delta
Update: Linearises the RGB before adjustment and re-gamma corrects it afterwards.

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1 year 6 months ago - 1 year 4 months ago #5 by crabshank
Replied by crabshank on topic Global delta
UPDATE: Included "avoid_grey" option which makes the shader have less of an effect as the chroma decreases. Makes the result look better when using rgbDeltaAmnt and greyDeltaAmnt. I have aslo removed split because Before and After work fine.
Last edit: 1 year 4 months ago by crabshank.

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1 year 2 months ago #6 by crabshank
Replied by crabshank on topic Global delta
Now just an RGB adjustment shader, but allows application on certain hue ranges (as in my Colour Isolate shader).

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1 year 1 month ago #7 by crabshank
Replied by crabshank on topic Global delta
Added version that adjusts the colour in the xy space, but keeps the same Y (brightness).
The following user(s) said Thank You: Faustus86

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