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Questions tagged [blending]

The process of mixing things together. Computer graphics uses blending concept to achieve transparency with image.

Blending: The process of mixing things together. Computer graphics uses blending concept to achieve transparency with image.

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567 questions
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mix RGBA pixmap with texture

I have a RGBA pixmap (e.g. an antialiased circular 4x4 dot) that I want to draw over a texture in a way similar to a brush stroke. The obvious solution of using glTexSubImage2D just overwrites a rectangular area with no respect to alpha value. Is…
anon
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How to blend colours in a sequence of GL_POINTS, opengl

I have a sequence of points in my implementation, for example 1.000.000 points which are placed according to a defined sequence that I developed. I want to color all of them in such a way that I cover all the colors ranges. I explain better: I have…
Tarta
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Can I blend (with multiply) a UIImage to a simple UIView with GPUImage?

I just couldn't find it in the docs at the first sight. It is clear that I can do almost every magic with two images, but can I composite stuff upon a simple UIKit hierarchy?
Geri Borbás
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"Weird" Artifacts With Blending

This is what I'm seeing: To provide some perspective for the image, the torus is behind the model. The model is transparent. Those lines appear on the model. I don't want those lines to appear. Can someone explain what I'm seeing? I don't know what…
Anish Ramaswamy
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Android OpenGL Black color with blending

It seems when i want to blend in OpenGL Colors are all black. No matter if it's a per vertex color or a global glColor4f(). The whole drawing method looks like this: public void Draw(Texture2D texture, Rectangle destination, Rectangle source,…
Daniel Sharp
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Blending a picture with White

Hi I have a project where I need to blend white and black with a picture. I have the black code working but I can't seem to get the white to work. Can someone please advise me on what I am doing wrong, I had the white working briefly earlier but it…
neech
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How does photoshop blend two images together? Part 2: Color/Hue/Saturation filters and Fast transform from RGB to LCH transform

How to apply Color/hue/saturation blends as Photoshop? I know, that GIMP works with HSV/HSL color models, but photoshop - with CIE LCH. hue/color/saturation blends has differences for the HSV/HSL and LCH color spaces. Original question ( How does…
monyag
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How does the game engine handle the blend in and blend out of animations

I read that some online answers are : FinalMatrix = BlendOutWeight * OutMatrix + BlendInWeight * InMatrix The premise of this answer is that the BlendIn time is the same as the BlendOut time. But what should be the calculation formula for the…
Marsir
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I have a strange problem when trying to blend two overlapping surfaces (same depth)

I have two surfaces. One as the background (rendered first). The other as my "canvas" (rendered last). I found a very strange problem when I tried to use blending to achieve a transparent effect! Even though I have rendered in the "recommended"…
potter john
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enable extension in opengl es

I had done a program that worked. There was in a rendering in framebuffer attached to a texture in float32. For this fact, I activated an extension var ext = gl.getExtension ("OES_texture_float"); //weglbl var ext = gl.getExtension…
oceanGermanique
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Method is undefined for this type ERROR

Hi I keep getting this error: Error: The method BlendRectWithWhite(int, int, int, int, int) is undefined for the type BlendablePic here is my coding for both, I am confused about what to do as I've looked at other forum posts and they just made me…
neech
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Kinetic js photo image with blurred/transparent edges

I'm building a photo-framing application using Kinetic JS (which is great, by the way). I would like the photo, which starts life as a JPEG, to have blurred edges so it is blended in nicely to its patterned background. Is there any native way using…
Drongo
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