glblendfunc

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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
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
glBlendFunc Disables Shader

I have a very simple shader (just sets a background square to green) and this works perfectly. I recently added in some quads that have a texture applied to them. This texture has 开发者_运维技巧some[详细]

2023-04-03 11:53 分类：问答
Custom glBlendFunc a lot slower than native

I\'m trying to do my own custom glBlendFunc through fragment shaders, however, my solution is a lot slower than the native glBlendFunc, even 开发者_如何学Cwhen they do the exact blending function.[详细]

2023-03-28 12:08 分类：问答
Creating an OpenGL texture with alpha using NSBitmapImageRep

I am loading a PNG using: theImage = [NSBitmapImageRep imageRepWithContentsOfFile:imagePath]; from which I can successfully create a gl texture and render correctly without any transparency. Howeve[详细]

2023-03-24 16:41 分类：问答
OpenGL Multi Bit Alpha Textures

I\'m having some troubles rendering a texture that has a 8 bit alpha channel - namely, its being flattened to 1 bit and glBlendFunc() doesn\'t seem to be doing anything.[详细]

2023-02-05 01:03 分类：问答
Why does OpenGL blending not work on HTC Desire?

Does anyone know how to enable blending in OpenGL (android) on a HTC Desire. I am trying to draw colored triangles and using the alpha value of the color buffer to blend them with the background (or a[详细]

2023-01-25 20:34 分类：问答
How does the OpenGL Blend equation work?

opengl ver: opengl es 1.x platform: iphone The blending equation: (Rs Sr + Rd Dr, Gs Sg + Gd Dg, Bs Sb + Bd Db, As Sa + Ad Da)[详细]

2023-01-19 18:26 分类：问答
Preserving the GLBlendFunc

I need to preserve the current GlBlendFunc socan restore it after I do some work.It seems that this is开发者_开发问答 not one of the attributes that can be saved with GLPushAttrib, is there some other[详细]

2022-12-29 07:37 分类：问答
How can I create an enum type in Perl?

I need to pass back a enum value in perl, how can I do this? pulling from this thread: Does Perl have an enumeration type?[详细]

2022-12-17 21:22 分类：问答