Top "Alpha" questions

What's the relationship among opaque, alpha, and backgroundColor of a UIView?

For example: I set UIView's alpha property as alpha = 0, Does that means its opaque property be treated as opaque=YES? …

ios performance uiview alpha

View with low alpha - Subview with high alpha

I have a UIView with an alpha of .5 I have added a subview with an alpha of 1. The subview seems …

objective-c ios uiview alpha

OpenGL transparent images have black in them

I am working on a game for Android and I was wondering why whenever I draw images with transparency there …

android opengl-es alpha overlap blending

Resize images with transparency in php

I have looked all over for how to correctly manage alpha when I'm resizing a png. I've managed to get …

php resize png gd alpha

ggplot2: different alpha values for border and filling of geom_point

I want to plot my data as a dotplot using geom_point. My datapoints are overlapping, so I want to …

r ggplot2 border alpha

Alpha Blending 2 RGBA colors in C

Possible Duplicate: How to do alpha blend fast? What is the fastest way to alpha blend 2 RGBA (Integer) colors? As …

c colors alpha alphablending rgba

How to programmatically alpha fade a textured object in OpenGL ES 1.1 (iPhone)

I've been using OpenGL ES 1.1 on the iPhone for 10 months, and in that time there is one seemingly simple task …

iphone opengl fade textures alpha

Alpha version of my Android app not available in Google Play

I need to test some features of my app like the "In App Billing" service so I published it in …

android google-play alpha

How to remove black background from textures in OpenGL

I'm looking for a way to remove the background of a 24bit bitmap, while keeping the main image totally opaque, …

c++ c opengl alpha blending

Andengine fade in/out and alpha modifiers not working

I have a problem with AndEngine GLES2. I have this code: Sprite black = new Sprite(0,0, blackRegion, this.getVertexBufferObjectManager()); black.setSize(…

android andengine fade alpha andengine-gles-2