alpha 255

> only you don ' T see it, because the> color_alpha->calculate > function just always returns *covers. In my case, I>  was using> a combined alpha  (Source x shape) ... Ah, i see. well, the division by 255 is too expensive. the usual technique there 

  Reproduced in: http://blog.csdn.net/Crazyjumper/archive/2007/12/26/1968567.aspx Reproduced in: http://blog.csdn.net/Crazyjumper/archive/2007/12/26/1968567.aspx Reproduced in: http://blog.csdn.net/Crazyjumper/archive/2007/12/26/1968567.aspx Hello

This article is a personal blog backup article, the original address:http://validvoid.net/win2d-premultiplied-alpha/There are two ways to represent the opacity of a color value in a computer drawing. Both methods are used in win2d. This article aims

If the original article needs to be reproduced, please note: Reprinted from Fengyu Chong unity3d tutorial Institute  Lecture on shader 12thAlpha Testing Introduction: this and the next sections focus on Alpha, that is, the content related to

The colors supported by the Android system are made up of 4 values, the first 3 RGB, which is what we often call the three primary colors (red, green, blue), and the last value is a, which is alpha. These 4 values are between 0~255. A smaller color

Alpha is a common special effect in graphic interface development. We usually use the following code to implement the alpha special effect: view.setAlpha(0.5f);View.ALPHA.set(view, 0.5f);ObjectAnimator.ofFloat(view, "alpha",

The Android system supports colors that are made up of 4 values, the first 3 RGB, the three primary colors we often say (red, green, and blue), and the last value is a, which is alpha. These 4 values are 0~255 between the two. The smaller the color

Argb-alpha,red,green,blueA color mode, which is the RGB color mode, attaches an alpha (transparency) channel, which is common in 32-bit bitmap storage structures.Alpha, image channel, full strength ff, means no transparency, i.e. opaque, no strength

Index | Transparent I can't see White in the preview on a transparent background. As soon as I convert to a transparent color, all the white becomes transparent. If I set it opaque, the object that is the same as the background color becomes white. "

Berlin noise is a special random noise, that is, the random number generated for each given value is unique, but different Values generate different random numbers. For more details about Berlin noise, refer to the following: Http://freespace.virgin.