OME-Zarr Multichannel

[pedson]

Adds basic OME-Zarr multichannel support under the current color channel implementation. Each channel is loaded as an individual child channel actor under the parent OmeZarrVolumeActor. There is a small change to the initial Ome-Zarr load/init call that slightly modifies NeuronTopTracerComponent and ViewLoader, but changes are otherwise limited to the Ome-Zarr implementation and the Volume MIP shader.

A two channel OME-Zarr file is available at /nrs/mouselight/pipeline-testing/tczyx.ome.zarr.

Video of 3 channel AIND data (too large to put on nrs) https://www.dropbox.com/scl/fi/jqayzn33npqqxd34tbrfk/OZMC.mp4?rlkey=au0lpjnr23cg06grngm3u1ta6&dl=0

[porterbot]

Looks like some kind of initialization exception when the color sliders are not open when the Zarr Sample is loaded. If you open or close the color sliders window after loading the 2-channel demo, it throws the following GLException. This might be related to the change in the order of the initColorModel? This seems to only happen with the 2-channel sample, not regular KTX samples.

javax.media.opengl.GLException: Thread[AWT-EventQueue-0,6,main] glGetError() returned the following error codes after a call to glUseProgram( 0xD): GL_INVALID_VALUE ( 1281 0x501),
at javax.media.opengl.DebugGL4bc.writeGLError(DebugGL4bc.java:29466)
at javax.media.opengl.DebugGL4bc.glUseProgram(DebugGL4bc.java:24136)
at org.janelia.gltools.BasicShaderProgram.load(BasicShaderProgram.java:66)
at org.janelia.gltools.material.BasicMaterial.load(BasicMaterial.java:114)
at org.janelia.horta.volume.VolumeMipMaterial.load(VolumeMipMaterial.java:279)
at org.janelia.gltools.material.BasicMaterial.display(BasicMaterial.java:34)
at org.janelia.gltools.MeshActor.display(MeshActor.java:397)
at org.janelia.horta.actors.OmeZarrVolumeMeshActor.display(OmeZarrVolumeMeshActor.java:76)
at org.janelia.horta.actors.OmeZarrVolumeChannelActor.display(OmeZarrVolumeChannelActor.java:232)
at org.janelia.horta.actors.OmeZarrVolumeActor.display(OmeZarrVolumeActor.java:140)
at org.janelia.gltools.RenderPass.renderScene(RenderPass.java:58)
at org.janelia.horta.render.VolumeRenderPass.renderScene(VolumeRenderPass.java:90)
at org.janelia.gltools.RenderPass.display(RenderPass.java:85)
at org.janelia.gltools.MultipassRenderer.display(MultipassRenderer.java:17)
at org.janelia.horta.render.NeuronMPRenderer.display(NeuronMPRenderer.java:171)
at org.janelia.scenewindow.SceneRenderer.renderScene(SceneRenderer.java:192)
at org.janelia.scenewindow.stereo.MonoscopicRenderer.renderScene(MonoscopicRenderer.java:18)
at org.janelia.scenewindow.SceneRenderer.display(SceneRenderer.java:146)
at jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:690)
at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:672)
at javax.media.opengl.awt.GLCanvas$10.run(GLCanvas.java:1383)
at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:1277)

[porterbot]

Hi Patrick,
Just revisiting this before I either close it or merge it in. Did you ever get a chance to evaluate the comment I made (I realize it was a pretty long time ago)?

Thanks,
David

[pedson]

I had not pursued this further after the plan shifted a bit to possibly reworking multichannel in Horta in general.

As it stands right now, it shouldn't be merged because it is out of date with other changes that happened with the supporting libraries.

If changes to the Horta multichannel are on hold or not going to happen, I could revisit this and update to try to allow for at least two channel OME-Zarr support under the current model. Otherwise, it would make sense to close.