Homebrew Mixed framebuffer/gpu shader graphics

[Tchibo9000]

G' day!
Haven't found this by searching: Is it possible to draw (write pixels) to the framebuffer used by the pica shader? I have not found anything in the devkitPro examples für 3ds nor searching the internet. I would like to show fast 3D graphics and draw some characters to the same screen.

Thank you!
- Michael

 

[Tchibo9000]

Ok, to be more specific:
I want to use citra3d to render a scene. There are Methods to get an set a C3D_FrameBuf. But as I understand this is not a native 3ds framebuffer? C3D_FrameBuf contains a color an a depth buffer. Can not find any examples for using it qutside the C3D renderer.

 

[Tchibo9000]

Ok, I missed the composite_scene example. But citra2d ist 2D only and not aware of left and right eye screen?

Is ist possible to get the left and right framebuffer, when citra3d has rendered its scene and before it's displayed?

 

[Tchibo9000]

I've tested a simple software renderer, that will work for me, so there ist no need for gpu shaders.

 

[dotMizi]

I still have a question about citro2d: It seemes to always draw on the front plane. Is there a way to determine how far this plane should project into the room in the case of citro3d/citro2d content?

 

[Deleted member 372186]

I think the latest added example may be what you're looking for:
https://github.com/devkitPro/3ds-examples/tree/master/graphics/gpu/stereoscopic_2d

Basically; Create a second screen target for the right eye and render it with an offset.