Hi Marc, On 24 Feb 2014, at 19:21, Marc Ferland <ferla...@sonatest.com> wrote:
> On Mon, Feb 24, 2014 at 03:46:07PM +0000, Chris Tapp wrote: >> I'm trying to get zero-copy GLES textures working using Danny / >> Cedartrail (PVR) so I can stream video frames into a GLES >> application. >> >> Googling hasn't really helped that much with how to do this, but I >> think I need to use eglCreateImageKHR and a client-side buffer so >> that glEGLImageTargetTexture2DOES() can be used to bind the texture >> to an image in memory. >> >> eglCreatePixmapSurfaceHI() looks like it allows client memory to be >> used as a colour-buffer which can be passed to eglCreateImageKHR, >> but I can't seem to be able to create a context which supports >> pixmaps. >> >> Are there any examples out there to show how to put all of this >> together? >> > Documentation about this stuff is indeed sparse and hard to find! > > I once tried (and failed!) to do something similar on crownbay but the > texture data was mapped to a polygon mesh (no video acceleration > stuff). > > The documentation that I came across mentionned using the > GL_TEXTURE_STREAM_IMG extension to implement the zero-copy texture > transfers. Maybe the same extension is available on cedartrail. I don't think is it. I tried to find this before and could only find GL_IMG_texture_stream2 listed in the GL extensions (for which I can find no documentation!). > The pdf used to be hosted on intel (emgd section) web site, but it > looks like it was taken down. I can check if I still have it somewhere > if you're interested. Yes please :-) Chris Tapp opensou...@keylevel.com www.keylevel.com _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto
