Move Texture handling and vao creation outside of Camera

manimlib/utils/shaders.py

@@ -4,6 +4,7 @@ import os
 import re
 from functools import lru_cache
 import moderngl
+from PIL import Image
 
 from manimlib.utils.directories import get_shader_dir
 from manimlib.utils.file_ops import find_file
@@ -14,6 +15,34 @@ if TYPE_CHECKING:
     from typing import Sequence, Optional
 
 
+ID_TO_TEXTURE: dict[int, moderngl.Texture] = dict()
+
+
+@lru_cache()
+def image_path_to_texture(path: str, ctx: moderngl.Context) -> moderngl.Texture:
+    im = Image.open(path).convert("RGBA")
+    return ctx.texture(
+        size=im.size,
+        components=len(im.getbands()),
+        data=im.tobytes(),
+    )
+
+
+def get_texture_id(texture: moderngl.Texture) -> int:
+    tid = 0
+    while tid in ID_TO_TEXTURE:
+        tid += 1
+    ID_TO_TEXTURE[tid] = texture
+    texture.use(location=tid)
+    return tid
+
+
+def release_texture(texture_id: int):
+    texture = ID_TO_TEXTURE.pop(texture_id, None)
+    if texture is not None:
+        texture.release()
+
+
 @lru_cache()
 def get_shader_program(
         ctx: moderngl.context.Context,