alphablending

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Watermarking an image with php, full code in here =)

O wrote this code to overlay 1 image over the other one... For some reason firefox reports that there is an error in the image and cannot be displayed.[详细]

2023-04-11 09:38 分类：问答
OpenGL: glTexEnvi, glBlendFunc and On Screen Text Messages

I\'m developing a movie player 开发者_C百科and I\'m using OpenGL to draw frames and On Screen Messages.[详细]

2023-04-08 19:11 分类：问答
Alpha Compositing Algorithm (Blend Modes)

I\'m trying to implement blend modes from the PDF specification, for my own pleasure, in SASS. PDF Specification:[详细]

2023-04-05 00:42 分类：问答
Create a PNG having JPG and AlphaChannel in C#

How can I create a PNG file if I have two separated JPG files with the image and the alpha chann开发者_开发知识库el?[详细]

2023-04-03 14:34 分类：问答
glBlendFunc and alpha blending

I\'m writing a application where a user is allowed to toggle between different shaders, and combinations of them. Thus i want to draw the exact same scene a multiple time.[详细]

2023-04-03 14:11 分类：问答
Convert PNG from premultiplied-alpha to conventional alpha transparancy?

I\'m having a really hard time working with some source images in PNG format that h开发者_高级运维ave premultiplied alpha because most tools simply do not support it correctly.[详细]

2023-03-30 11:45 分类：问答
is there any conflict between GL_DEPTH_TEST and alpha blending in openGL?

I\'m drawing some \"2D\" pictures. Let\'s say, pic A in the background draw first, pic B in foreground draw later than A.[详细]

2023-03-28 03:10 分类：问答
How are `glTexEnv`, `glColor4x` and `glBlendFunc` related in OpenGL ES 1.0?

I\'m looking at SurfaceFlinger, i.e. the the code that is doing the composition in Android, and I have trouble understanding some of the OpenGL ES 1.0 calls as I\'ve only programmed ES 2.0 code.[详细]

2023-03-23 14:13 分类：问答
Multitexturing is darkening the entire scene!

I\'ve implemen开发者_开发百科ted a scene using 3 quads, A, B, and C. Quad C is behind quad B. Quad B sits on top of Quad A.[详细]

2023-03-16 02:26 分类：问答
XNA Alpha Blending part of a texture in Game Studio 4.0

Hi I\'m trying to follow an answer about making part of a texture transparent when using Alpha Blending from this question[详细]

2023-03-12 23:09 分类：问答