Something odd happening to graphics/CUDA memory

Rhino Developer
1

I am trying to do my initialization in

BOOL CMyyPlugIn::OnLoadPlugIn()

So I set up my calls to initialize openGL and CUDA for my plugin to save on loading times (rather then do it in the cmd itself)

Then in the command I access the global variable from plugin via

CMyPlugIn thePluginGlobal = MyPlugIn();
thePluginGlobal.getMyVariable().Render();

Which works. I tested returning a dummy ID value to see if the object has been intialized and set and its what I expect.
But the GPU/CUDA memory seems to crash when I run something on it

Any reason why that would have gotten corrupted?

(The init works fine if in the cmd itself, but wastes 2 secs everytime its run. I am trying to set the GPU initialization in the onload plugin to avoid having to setup the GPU buffers and CUDA everytime)

2

Quickly looking at that code snippet, I see you are creating a new instance of your plugin class. You want to change the code to

CMyPlugIn& thePluginGlobal = …

3

Tried that, but that did not clear it up.

Its almost like Rhino is corrupting my buffers.

glBindBuffer(GL_ARRAY_BUFFER, colorbuffer);
float *ptr = (float*)glMapBufferARB(GL_ARRAY_BUFFER_ARB, GL_READ_WRITE_ARB);
ptr[index] = ptr[index + 4] = ptr[index+8] = pColor.r;
glUnmapBufferARB(GL_ARRAY_BUFFER_ARB); // release pointer to mapping buffer
glBindBuffer(GL_ARRAY_BUFFER, 0);

since this code is where its throwing up when I call it inside Rhino

I’m not sure if Rhino is doing something to the buffers underneath somehow?

Update the issue is with Rhino I lose my GLcontext somehow and cannot see to get it bcck for GLFW so glew cannot be re initialized on the 2nd run?

4

I’m confused. Rhino uses OpenGL (already) and as a plug-in developer you can play in its pipeline by implementing a conduit. What are you trying to do that you cannot do in a Rhino conduit?

5

If the init function works in your command, why not just keep a bool around to set that you’ve called init once? I’m having a hard time understanding exactly what it is that you are trying to do.