JUCE Integration

[ibenilsen]

I'm wondering if there is any guidance for setting up magnum with a JUCE VST OpenGL context.

I'm trying to get Magnum to adopt the JUCE context, which it seems to, but I'm only able to get render output from magnum if I use the default OpenGL Version (which seems to default to 2.1 on my MBP), and I'd like to use a newer version to take advantage of modern features. When I use JUCE setOpenGLVersion to anything other than default I no longer get output.

When I check the magnum context GL versions it logs correctly. Sorry if this is more of a JUCE question than a Magnum question but figured I'd try here first.

For reference I am manually building from source using a cmake that looks like this

CMAKE_OPTIONS=(
    "-DCMAKE_BUILD_TYPE=${BUILD_TYPE}"
    "-DCMAKE_INSTALL_PREFIX=${MAGNUM_INSTALL_PREFIX}"
    "-DCMAKE_PREFIX_PATH=${MAGNUM_PREFIX_PATH}"

    # Core Magnum features - ESSENTIAL for osci-render
    "-DMAGNUM_WITH_TRADE=ON"        # For MeshData, AbstractImporter etc.
    "-DMAGNUM_WITH_MESHTOOLS=ON"    # For generateLines, compileLines etc.
    "-DMAGNUM_WITH_PRIMITIVES=ON"   # For Primitives::circle2DWireframe etc.
    "-DMAGNUM_WITH_SCENEGRAPH=ON"   # For scene graph functionalities
    "-DMAGNUM_WITH_SHADERS=ON"      # For various shaders (FlatGL, PhongGL etc.)
    "-DMAGNUM_WITH_TEXTURETOOLS=ON" # For texture utilities
    "-DMAGNUM_WITH_GL=ON"           # For OpenGL support
    "-DMAGNUM_WITH_DEBUGTOOLS=ON"   # For debug draw, etc.

    # Build options
    "-DMAGNUM_BUILD_STATIC=ON"         # Build static libraries
    "-DMAGNUM_BUILD_PLUGINS_STATIC=ON" # Build plugins statically
    "-DMAGNUM_BUILD_TESTS=OFF"         # Disable tests for faster build
    "-DMAGNUM_BUILD_GL_TESTS=OFF"      # Disable GL tests
    "-DMAGNUM_BUILD_EXAMPLES=OFF"      # Disable examples

    # Target-specific options
    "-DMAGNUM_TARGET_GL=ON"        # Build for OpenGL
    "-DMAGNUM_TARGET_GLES=OFF"     # Disable GLES
    "-DMAGNUM_TARGET_GLES2=OFF"    # Disable GLES2
    "-DMAGNUM_TARGET_VULKAN=OFF"   # Disable Vulkan
    "-DMAGNUM_TARGET_HEADLESS=OFF" # Disable headless

    # Platform-specific options
    "-DCMAKE_OSX_ARCHITECTURES=arm64"
    "-DMAGNUM_WITH_CGLCONTEXT=ON" # For macOS
    "-DMAGNUM_WITH_GL_INFO=ON"    # For OpenGL info

    # Additional features
    "-DMAGNUM_WITH_SCENECONVERTER=ON"
    "-DMAGNUM_WITH_ANYIMAGEIMPORTER=ON"
    "-DMAGNUM_WITH_ANYSCENEIMPORTER=ON"
    "-DMAGNUM_WITH_ANYSHADERCONVERTER=ON"
    "-DMAGNUM_WITH_MAGNUMFONT=ON"
    "-DMAGNUM_WITH_MAGNUMFONTCONVERTER=ON"
    "-DMAGNUM_WITH_OBJIMPORTER=ON"
    "-DMAGNUM_WITH_TGAIMAGECONVERTER=ON"
    "-DMAGNUM_WITH_TGAIMPORTER=ON"
    "-DMAGNUM_WITH_GLSLANGSHADERCONVERTER=OFF"
    "-DMAGNUM_WITH_SPIRVTOOLSSHADERCONVERTER=OFF"
    "-DMAGNUM_WITH_SHADERTOOLS=ON"
    "-DMAGNUM_WITH_TEXT=ON"
    "-DMAGNUM_WITH_VK_INFO=OFF"
)

Thanks!

[ibenilsen]

I ended up figuring things out and posted a repo here for anyone looking in the future:

https://github.com/ibenilsen/juce-magnum-example