Add config to enable opengl wireframe (#2041)

docs/source/tutorials/configuration.rst

@@ -353,7 +353,7 @@ A list of all config options
    'tex_template', 'tex_template_file', 'text_dir', 'top', 'transparent',
    'upto_animation_number', 'use_opengl_renderer', 'use_webgl_renderer',
    'verbosity', 'video_dir', 'webgl_renderer_path', 'window_position',
-    'window_monitor', 'window_size', 'write_all', 'write_to_movie']
+    'window_monitor', 'window_size', 'write_all', 'write_to_movie', 'enable_wireframe']
 
 
 A list of all CLI flags

manim/_config/default.cfg

@@ -144,6 +144,9 @@ disable_caching = False
 # Disable the warning when there are too much submobjects to hash.
 disable_caching_warning = False
 
+# --enable_wireframe
+enable_wireframe = False
+
 # Default tex_template
 # --tex_template
 tex_template =

manim/_config/utils.py

@@ -245,6 +245,7 @@ class ManimConfig(MutableMapping):
         "custom_folders",
         "disable_caching",
         "disable_caching_warning",
+        "enable_wireframe",
         "ffmpeg_loglevel",
         "format",
         "flush_cache",
@@ -539,6 +540,7 @@ class ManimConfig(MutableMapping):
             "fullscreen",
             "use_projection_fill_shaders",
             "use_projection_stroke_shaders",
+            "enable_wireframe",
         ]:
             setattr(self, key, parser["CLI"].getboolean(key, fallback=False))
 
@@ -687,6 +689,7 @@ class ManimConfig(MutableMapping):
             "use_projection_fill_shaders",
             "use_projection_stroke_shaders",
             "zero_pad",
+            "enable_wireframe",
         ]:
             if hasattr(args, key):
                 attr = getattr(args, key)
@@ -882,6 +885,12 @@ class ManimConfig(MutableMapping):
         doc="Whether to save the rendered scene in .gif format (-i).",
     )
 
+    enable_wireframe = property(
+        lambda self: self._d["enable_wireframe"],
+        lambda self, val: self._set_boolean("enable_wireframe", val),
+        doc="Enable wireframe debugging mode in opengl.",
+    )
+
     @property
     def verbosity(self):
         """Logger verbosity; "DEBUG", "INFO", "WARNING", "ERROR", or "CRITICAL" (-v)."""

manim/cli/render/global_options.py

@@ -78,4 +78,10 @@ global_options = option_group(
         help="Expand the window to its maximum possible size.",
         default=None,
     ),
+    option(
+        "--enable_wireframe",
+        is_flag=True,
+        help="Enable wireframe debugging mode in opengl.",
+        default=None,
+    ),
 )

manim/renderer/opengl_renderer.py

@@ -260,6 +260,7 @@ class OpenGLRenderer:
                 self.frame_buffer_object = self.get_frame_buffer_object(self.context, 0)
                 self.frame_buffer_object.use()
             self.context.enable(moderngl.BLEND)
+            self.context.wireframe = config["enable_wireframe"]
             self.context.blend_func = (
                 moderngl.SRC_ALPHA,
                 moderngl.ONE_MINUS_SRC_ALPHA,