Hi! So I found a bunch of examples of how to convert YUV to RGB in OpenGL ES 2.0, but they all require me to give to buffers (luminance and chrominance) as input to the shaders.
What I want to do is to use the SurfaceTexture that I initialise from an OpenGL ES 2.0 texture I allocated. The camera gives its input to the SurfaceTexture correctly, but I can't display draw the texture in the fragment shader. I'm assuming this is because the format is NV21 (YUV) and the normal texture2D() shader function can't process that correctly. Now, the question is how do I make this work? Is it possible to convert NV21 to RGB in a shader without first splitting the NV21 buffer in two separate buffers? This would sort of defeat the purpose since I want to process the entire frame in OpenGL. Having to copy buffers manually when I can get the entire frame into OpenGL seems like a waste of CPU. I'm pretty sure that the underlying camera framework in Android converts nv21 to rgb on the fly, since I can draw the preview to a SurfaceTexture that I receive from a TextureView, but is this conversion then happening on the CPU or is there some secret yuv2rgb shader in the Android source code that I can't find? Thanks! // Erik -- -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
