koobas.hobune.stream
How do I insert custom rendering before transparent objects?
I want to put some custom rendering code in, after rendering solid geometry, but before transparencies. If I add code to call a native plugin with GL.IssuePluginEvent in a camera script in OnPostRender, the drawing comes after transparent objects.
How can I draw in between geometry and transparencies using GL.IssuePluginEvent?
If I directly call my native plugin rendercode from OnRenderImage, that produces a thread conflict because we're on the main thread, not the render thread. So it works, but occasionally crashes.
1 This code renders after transparencies, thus obscuring particle systems etc.:
void OnPostRender()
{
GL.IssuePluginEvent (EVENT_ID);
}
2 This code renders after opaque objects and before transparencies, but has a thread conflict:
[ImageEffectOpaque]
void OnRenderImage(RenderTexture source,RenderTexture destination)
{
UnityRenderEvent(EVENT_ID);
}
3 Whereas this code renders after transparencies, in spite of issuing the event before they are rendered:
[ImageEffectOpaque]
void OnRenderImage(RenderTexture source,RenderTexture destination)
{
UnityRenderEvent(EVENT_ID);
}
So, only version 2 above produces the correct effect, but it is not usable.
I'm very unfamiliar with the GL class, but I assume setting the material to use a shader that is a Queue point Geometry+1 doesn't work?
There is no material. GL.IssuePluginEvent produces a call on the rendering thread to a native plugin.
Ahh my bad, in that case I am unlikely to be of any help! The only other idea I can think of would be to have 2 cameras, one that renders geometry, then you have your plugin and then paint a second 'transparent layer' camera over that but it seems rather hacky and hopefully someone cleverer than me will point you in the right/better direction :D good luck
I'm confused by parts 2 and 3. They appear to be the exact same code, so I am not sure how they could be executing in a different order than one another. At any rate, OnRenderImage happens after OnPostRender, so I believe you should be able to add [ImageEffectOpaque] to code section 1 to issue your event after the Opaque geometry. OnRenderImage is supposed to be called after the entire scene is Rendered.
