Re: [osg-users] Setting a monochrome 2d texture from byte array

Steve, Just be aware that GL_LUMINANCE is long since deprecated and only available in compatibility context. GL_RED is the only 1-channel option available in modern OpenGL. Glenn Waldron / osgEarth On Tue, Nov 5, 2019 at 12:49 PM Steve Hardy wrote: > Hi, > > Thanks for the responses. I tried

Re: [osg-users] Setting a monochrome 2d texture from byte array

Hi, Thanks for the responses. I tried Robert's initial suggestions, but they get Code: Warning: detected OpenGL error 'invalid value' at after RenderBin::draw(..) on my system. Glenn's suggestion basically worked, although the image was literally shades of red. So I looked at the

Re: [osg-users] Setting a monochrome 2d texture from byte array

Sandy, Try this instead. You probably want normalized [0..1] data on the GPU, not [0..255] integers. img->setImage(w, h, 1, GL_R8, GL_RED, GL_UNSIGNED_BYTE, data, osg::Image::USE_MALLOC_FREE); Glenn Waldron / osgEarth On Tue, Nov 5, 2019 at 2:14 AM Steve Hardy wrote: > Hi, > > I am trying

Re: [osg-users] Setting a monochrome 2d texture from byte array

Hi Steve, Using a monochrome texture should be as simple as using GL_ALPHA or GL_RED as the pixel format. The OpenSceneGraph/src/osgText/DefaultFont.cpp provides an example of a setting up a monochrome image. Robert. ___ osg-users mailing list

[osg-users] Setting a monochrome 2d texture from byte array

Hi, I am trying to render a monochrome camera image to a 2d texture, but without success unless I first convert it to BGR. After reading http://forum.openscenegraph.org/viewtopic.php?t=16236 I got closer, but still no cigar as the result is a boring uniform black. Here is some code: Code: