⚠️ Deprecated ⚠️

This is deprecated since version 4.16.

GTK's new Vulkan-focused rendering does not support this feature. Use ../gtk4/class.GLArea.html for OpenGL rendering.

Creates a new GBytes args from the current state of the given @builder, and frees the @builder instance.

Any uniforms of the shader that have not been explicitly set on the @builder are zero-initialized.