Add Chromium-only Blender WebEngine parity work

blender-5.2.0/doc/python_api/examples/gpu.5.py

@@ -0,0 +1,25 @@
+"""
+2D Rectangle
+------------
+"""
+import bpy
+import gpu
+from gpu_extras.batch import batch_for_shader
+
+vertices = (
+    (100, 100), (300, 100),
+    (100, 200), (300, 200))
+
+indices = (
+    (0, 1, 2), (2, 1, 3))
+
+shader = gpu.shader.from_builtin('UNIFORM_COLOR')
+batch = batch_for_shader(shader, 'TRIS', {"pos": vertices}, indices=indices)
+
+
+def draw():
+    shader.uniform_float("color", (0, 0.5, 0.5, 1.0))
+    batch.draw(shader)
+
+
+bpy.types.SpaceView3D.draw_handler_add(draw, (), 'WINDOW', 'POST_PIXEL')