alpha

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OpenGL blending with source and destination alpha

I\'m trying to render a texture with alpha to a frame buffer with alpha. I need the texture\'s transparency to be controlled by a combination of its own alpha, and the alpha already rendered to the fr[详细]

2023-01-27 11:59 分类：问答
Scale a Bitmap and preserve alpha, on BlackBerry

I am trying to scale down a Bitmap that contains transparency.Unfortunately, all three methods I\'ve tried result in white where there should be full transparency.I would like to maintain the transpar[详细]

2023-01-25 23:59 分类：问答
Testing point in the alpha channel

Is there a way to detect if the alpha of a pixel after drawing is not 0 when using OpenGLES on the iphone?[详细]

2023-01-24 11:09 分类：问答
WPF BitmapImage and TIFF with CMYK + Alpha

I am using this code snippet to load various image files: BitmapImage bitmap = new BitmapImage (); bitmap.BeginInit ();[详细]

2023-01-23 12:15 分类：问答
Sorting polygons for correct alpha blending in DirectX 9?

What is the correct way to sort polygons so that they blend properly? The basic concept I think is to r开发者_Python百科ender the furthest polygon first back to closest in order. But what about cases[详细]

2023-01-22 16:40 分类：问答
OpenGL ES for iPhone blending not working

I\'m a beginner to 3D graphics in general and I\'m trying to make a 3D game for the iPhone, and more specifically, to use textures that contain transparency. I am able to load a texture (an 8 bit .png[详细]

2023-01-21 20:47 分类：问答
How to make MapView object transparent (alpha)?

All, I have a need to display information on a MapView object. No problems there. The issue is that there are times when the MapView object displays 开发者_运维技巧map details that visually compete[详细]

2023-01-21 17:35 分类：问答
UITableView background with alpha color causing problem with UITableViewCell

I\'m trying to get a semi-transparent uitableview, with this color [UIColor colorWithRed:(247.0/255.) green:(151.0/255.0) blue:(121.0/255.0) alpha:0.38];[详细]

2023-01-19 13:07 分类：问答
Is it okay these days to use PNG with alpha-transparency in websites?

I remember from 3 years ago that it was an absolutely huge pain to use any nice PNG with alpha in websites, because of IE6 and other bad browsers.[详细]

2023-01-18 23:25 分类：问答
Developing using pre-release dev tools

We\'re developing a web site. One of the development tools we\'re using has an alpha release available of its next version which includes a number of features which we really want to use (ie they\'d s[详细]

2023-01-18 15:15 分类：问答