glCheckFrameBufferStatusEXT error in writeGLDtexture

[leadedge]

glCheckFrameBufferStatusEXT error in writeGLDtexture

[leadedge]

GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT is commented out in the function PrintFBOstatus. I can't recall now the problem I had with it. Try removing it.

But the fact that the Spout Demo receiver does not get the texture from the sender indicates a possible driver issue. Try using "SpoutDXmode" and select "CPU texture mode". Test again with the demo sender and receiver. Also try "Shared Memory". Success or failure with these will narrow it down.

[SirDifferential]

CPU mode works, shared memory works. Both have bad FPS though, shared memory more so. CPU mode has good framerate, but occasional hick-ups.

I changed https://github.com/leadedge/Spout2/blob/master/SpoutSDK/Source/SpoutGLDXinterop.cpp#L1644

from

if(status == GL_FRAMEBUFFER_COMPLETE_EXT) {

to

if(status == GL_FRAMEBUFFER_COMPLETE_EXT || status == GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT) {

And no errors are logged anymore. The texture is not transferred, though. The received texture is completely black.

EDIT: I just disabled "DX9" in the Spout DXmode, and the transmission started working in both the demo and our application. So this is a DX9 issue?

[leadedge]

I recall a similar problem a while back with Unity where switching to DX11 solved an antialiasing problem which could have been due to multisampling.

It is discussed for DirectX 9 in the specification document. Look at the DISCUSSION section and the example code -
http://developer.download.nvidia.com/opengl/specs/WGL_NV_DX_interop.txt

But it is not mentioned in the DirectX 11 equivalent -
https://www.khronos.org/registry/OpenGL/extensions/NV/WGL_NV_DX_interop2.txt

I don't know the significance of this in your application but maybe it might give you some ideas.

Edit:
In the first document they mention "driver control panel settings regarding anti-aliasing". The NVIDIA control panel has several settings for antialiasing. Maybe there are different settings on this particular machine

[SirDifferential]

The Intel control panel has application specific options under the "3D" page that include CMAA aliasing, MSAA aliasing and anisotropic filtering. I played around with all those settings with DX9 enabled, but couldn't get anything displaying. I don't know if updating the GPU driver would make a difference as in this case we can't upgrade the drivers due to the specific driver version being required.

As far as our case is considered using DX11 solves this issue.

[leadedge]

OK then. I think it is in the too hard basket. May we close this issue?