Setting OpenGL version to 4.1 asserts a GL Error when trying to load shaders and textures

General JUCE discussion
1

Hey yall,

I’m trying to set my Mac build to OpenGL 4.1 as it defaults to 2.1.
Everything works fine when using OpenGLContext::setOpenGLVersionRequired (OpenGLVersion) however, when I try to load shaders and textures I keep getting this assertion/error message:

***** GL_INVALID_ENUM at C:\Users\10850K\Documents\JUCE 7\JUCE 7.04\JUCE\modules\juce_opengl\opengl\juce_OpenGLTexture.cpp : 54

Not very descriptive but hey. I do NOT have this issue when on 2.1, or on 4.6 (Windows).
I am able to recreate the problem on Windows by setting the version to 4.1 as well.
Worth noting, the assertion is not critical in the sense I can just skip it and everything runs seemingly fine.

And for how I’m setting the textures, its nothing special

  for (auto j = 0; j < shader->getTextures().size(); ++j)
  {
      auto& tex = shader->getTextures().getReference(j);
      openGLContext->extensions.glActiveTexture(GL_TEXTURE0);
      glEnable(GL_TEXTURE_2D);
      glEnable(GL_BLEND);
      glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
      tex->bind();
      if (tex->getWidth() == 0 || tex->getHeight() == 0)
          tex->loadImage(shader->getTextureImages().getUnchecked(j));

      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
  }

In this call
tex->loadImage(shader->getTextureImages().getUnchecked(j));
The function gets to the create line, and then hits a GLError

Hopefully this is an issue on my end, but if not is there a way I can turn off this assertion ?
Thanks

2

This is invalid in a context using the Core Profile. There’s a few places in JUCE where we’re making that mistake, so I’ll fix those next week.

2 Likes
3

We’ve added a fix for this issue here:

1 Like
4

Lets go! Thank you so much