Questions tagged [alpha-blending]

Alpha blending is the process of combining a translucent foreground color with a background color, thereby producing a new blended color.

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Blending Lights Into An Image Pulled From Memory (2d)

The circumstances to why I am forced to do things this way are a bit weird, without going into them, I have the following situation: I have a pointer that points to image data arranged in the form ...
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Overlap transparent particles without blending? (Unity)

I'm trying to create a continuous output of light from an object (like the exhaust of a space ship), and I thought I'd use particles to achieve this. But I'm running into a problem with alpha blending....
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Enabling OpenGL lighting seems to disable blending

I have the following code to set up for some 2D drawing using OpenTK. I originally wrote it without any lighting considerations, but later added the lighting block. This version of the code uses ...
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354 views

Smoothly fitting texture tiles using alpha gradient on edges

I'm trying to draw a background texture with tiles that I'll rotate and mirror to create a maze. Here is a sample tile: As you can see, I use an alpha gradient on the borders. If I'd use a sharp ...
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250 views

Show only some parts of a point cloud. OpenGl4

I am developing an opengl 4.0 app which is showing a point cloud. In the other hand, I have an array "pos" where I have some x,y,z positions: ...
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Fallback for R32F alpha blending

I'm rendering an aggregation of value into an R32F format texture, using alpha blending to accomplish the sum operation. R32F alpha blending is not supported on all hardware. What kind of fallback ...
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60 views

Controllable color blending?

I'm relatively new to color blending in DirectX, and I'm hoping there is a relatively simple answer to this question. I am targeting Direct10.1. What I am trying to achieve is colour blending of two ...
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94 views

Alpha blending is too smooth

I got the exercise to create a color map from a heightfield and given normals with alpha blending. Therefore I have to blend 4 textures (deep-flat, deep-steep, high-flat, high-steep) depending on the ...
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606 views

DirectX 11 GenerateMips only works with premultiplied alpha?

The GenerateMips method in the ID3D11DeviceContext allows generation of mipmaps at runtime, which is fine for fully opaque textures. However, when this method is used with transparent textures that do ...
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How can I eliminate these white outlines on my sprites in libgdx?

I'm recently started working on a game in libgdx, and I've run into the problem that my sprites tend to get a thin, whitish outline around them. This is especially a problem for me since I'm working ...
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141 views

Weird blending behavior on PowerVR SGX544MP2

On PowerVR SGX544MP2, sometimes blending behaves in a very strange way for me. Instead of blending with the actual color from the previous draw calls, it tries to blend with black: (sorry about the ...
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98 views

Part of the back side of a transparent object disappears

I did some blending and culling to get the image below. As you can see, it is messed up. On the right side of the image, only the front side of the mesh shows. On the left side of this image, it ...
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81 views

How to create post-processing effects in Slick2D?

As I get closer and closer to the end of the feature development for my game and the beginning of the graphical overhaul, I keep thinking of ideas for graphical effects that would make my game even ...
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1answer
208 views

DirectX 11 Sprite Alpha (Invalid? + Bad Quality)

i have a bug with a texture font. This is the texture file in photoshop: This is the result i am getting: The alpha from 0 and 1 shows weird artifacts as the final result, alongside the low quality ...
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133 views

LWJGL 3 - Random Sprites Don't Blend

Some of my sprites don't "Blend" in with tiles behind them Z-wise. glEnable(GL_DEPTH_TEST); Depth testing is enabled and works. ...
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ETC1 texture opacity

I'm using the cocos2d-x engine and want to support etc1 on android devices for my game. For ETC1 i'm using the mali compression tool, and GLSL. Everything is working, but I can't change the opacity ...