alpha

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How to convert grayscale bitmap into alpha mask?

I have a grayscale JPG picture, and I\'d like to load it into Bitmap of format Bitmap.Config.ALPHA_8. Is that possible, how can I do th开发者_开发知识库at?[详细]

2023-02-13 00:18 分类：问答
Draw a block of colour on top of a figure to create trails in python

I have a set of data which I am plotting using pylab 开发者_如何学Gowhich changes over time. I can store each frame as a .png and put them together using iMovie, but I want to add trails to the plot[详细]

2023-02-12 11:32 分类：问答
html/css Tranparency in image link not clickable

I have a .png image of a star. The area around the star is transparent. Here is an example of my code[详细]

2023-02-12 10:19 分类：问答
How do you make the background of a texture transparent when it overlaps?

I have a texture that has a black background which I want to make transparent. The problem is that when I draw this texture in front of another object using the textu开发者_如何学Gore, the black backg[详细]

2023-02-11 04:57 分类：问答
Texture and color together in GLSL?

I cant figure out, how to get with OpenGL ES 2.0 similiar Results to OpenGL ES 1.1. I want to use actually a Sampler2D (to blend my texture with Alpha Channel to the Framebuffer) and also set an Color[详细]

2023-02-10 17:07 分类：问答
Changing alpha of window background, not the whole window

so i have a quick question i have the method below which sets the alpha value of a window depending on the value from a slider, however the cont开发者_开发百科ent of the window also becomes translucen[详细]

2023-02-08 23:01 分类：问答
Detecting .png alpha channel in Windows/D3D

I\'m loading a texture from .png using D3DXCreateTextureFromFile(). How can my program kn开发者_StackOverflow社区ow if the image file contains an alpha channel?This isn\'t too hard to do by simply exa[详细]

2023-02-07 19:29 分类：问答
Need help understanding Alpha Channels

I have the RGB tuple of a pixel we\'ll call P. (255, 0, 0) is the color of P with the alpha channel at 1.0.开发者_如何转开发[详细]

2023-02-07 06:00 分类：问答
Android <alpha> issues... image blinks?

My fade in code works p开发者_C百科roperly, but at the end before transitioning to the main .java file it shows the image again for a second. What could I do to fix this?[详细]

2023-02-07 03:18 分类：问答
How to use ImageMagick to substract a image from another?

I have this two images : (source: free.fr) (source: free.fr) How can I use imagemagick to remove the background (second picture) from the first one ?[详细]

2023-02-06 22:45 分类：问答