Questions tagged [blending]
The blending tag has no usage guidance.
19
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Normal blend mode math
I have one question.
How to calculate source color after blending operation.
For example. I have
1 - Background color (r-115, g-94, b-67, a-1)
2 - Foreground color above background color, which ...
- 1
0
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1
answer
51
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What's the intuition behind color burn and other blend modes?
I've implemented a simple color burn function in one of my shaders and I understand the results (I think), but the math behind it, although simple, is unintuitive to me. I struggle to understand how ...
2
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1
answer
453
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How is the alpha value treated when blending?
I'm struggling with understanding how blending works. Here's what I understand:
when I set the following
...
- 25
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0
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36
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Is it possible to separate or split original images (or videos) from a blend image (or video)
The title says it all. Blended image or video contains multiple image or video blended on top of each other. I am looking for any software or tools that can separate the original images or videos.
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- 101
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128
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how to blend RGB components separately
Suppose I have previously rendered some set of pixels on the screen that each contain one of the following RGB values:
...
- 29
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1
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390
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OpenGL blending with the screen
I don't understand how OpenGL performs the blending of a texture on the screen. By default, the clear color is set to (0, 0, 0, 0). If we use the default blending equation GL_SRC_ALPHA and ...
- 269
1
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2
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432
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How to calculate interpolation between multiple skeleton poses?
I found out that I should use spherical linear interpolation to blend two poses of a joint. I cannot find what to do if I have hundreds of poses to blend except applying the SLERP iteratively.
What ...
- 161
2
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1
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810
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GL_SAMPLE_ALPHA_TO_COVERAGE and depth testing
I am currently looking into alternatives to my current, somewhat slow but exact, OIT approach. Specifically, GL_SAMPLE_ALPHA_TO_COVERAGE to convert the alpha value into a per-sample mask.
...
- 123
3
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1
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67
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Repeating alpha over/under operation multiple times
I have two RGBA colors in linear [0..1] space, src and dst and I want to alpha blender src ...
- 297
1
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1
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59
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How to blend a segment of an image with another image
I want to put a segment of an image to another image. But to make it realistic I applied poisson blending. But the output is not good at all.
Output without poisson blending. The kid was cropped ...
- 81
1
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0
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177
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Sorting my geometry for alpha testing
Here is my predicament. I am trying to draw a multitude of dots that leave trails behind them real time. Heres the difficulty, that line fades. Each dot line has a defined z position and the goal ...
- 1,445
2
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2
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3k
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How to perform additive blending in Metal. What do these terms mean?
Forgive me, I dont really understand the basis of alpha blending. Like I know the formula but when it comes to the terms blending operation, source blend factor, and destination blend factor I am ...
- 1,445
3
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1
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1k
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Alpha blending in linear colour space
I've been making a simple game in OpenGL, and implemented a screen fade-out using the old 'draw a black fullscreen quad and ramp up the alpha' trick. I'm doing all my shaders in linear space and using ...
- 2,402
1
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2
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152
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What blend mode is this?
I asked this on Graphic Design but was unable to get any relevant help from them.
I'm trying to reverse engineer a blending mode I've seen on a picture:
This image was created by someone else ...
- 111
1
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1
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2k
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Is it possible to override or disable blending per pixel
I'm rendering transparent objects in separate framebuffer then compositing it with opaque one to get final image.
The transparent pass has additive blending:
...
- 185