I\'m developing a movie player 开发者_C百科and I\'m using OpenGL to draw frames and On Screen Messages.
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.
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
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.
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
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.
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
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)
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
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?
加载中,请稍侯......