Hgi to render directly to OpenGL frame buffer

Community Hydra
1

I am trying to create a simple demo app with Hgi and GLFW.

I looked at the file pxr\imaging\hgi\unitTestHelper.cpp as an example, then I ported the relevant functions to my GLFW app.

But this file shows how to render to a texture:
_colorTarget = _hgi->CreateTexture(desc);

I need to render directly to the frame buffer.

In my demo app, I added the following code to see if I can get to clear the background to a specific color, but it doesn’t show that color:

_colorAtt.clearValue = GfVec4f(0.0f, 1.0f, 0.0f, 1.0f);

Anybody has some code sample (or even pseudo code) on how to achieve that?