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Slightly speed up Blender interface by reducing the amount of bytearray reallocations #304

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Slightly speed up Blender interface by reducing the amount of bytearray reallocations #304

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7caef02
Speedup from reducing reallocations
DJLevel3 May 26, 2025
20d3e7b
Possible speedup? We'll see
DJLevel3 May 26, 2025
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91 changes: 29 additions & 62 deletions blender/osci_render/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -137,8 +137,7 @@ def get_gpla_file_allframes(scene):
bin.extend(GPLA_PATCH.to_bytes(8, "little"))

# file info
bin.extend(("FILE ").encode("utf8"))
bin.extend(("fCount ").encode("utf8"))
bin.extend(("FILE fCount ").encode("utf8"))
bin.extend((scene.frame_end - scene.frame_start + 1).to_bytes(8, "little"))
bin.extend(("fRate ").encode("utf8"))
bin.extend(scene.render.fps.to_bytes(8, "little"))
Expand All @@ -162,8 +161,7 @@ def get_gpla_file(scene):
bin.extend(GPLA_PATCH.to_bytes(8, "little"))

# file info
bin.extend(("FILE ").encode("utf8"))
bin.extend(("fCount ").encode("utf8"))
bin.extend(("FILE fCount ").encode("utf8"))
bin.extend((scene.frame_end - scene.frame_start + 1).to_bytes(8, "little"))
bin.extend(("fRate ").encode("utf8"))
bin.extend(scene.render.fps.to_bytes(8, "little"))
Expand Down Expand Up @@ -192,9 +190,7 @@ def save_scene_to_file(scene, file_path):

def get_frame_info_binary():
frame_info = bytearray()
frame_info.extend(("FRAME ").encode("utf8"))

frame_info.extend(("focalLen").encode("utf8"))
frame_info.extend(("FRAME focalLen").encode("utf8"))
frame_info.extend(struct.pack("d", -0.05 * bpy.data.cameras[0].lens))

frame_info.extend(("OBJECTS ").encode("utf8"))
Expand All @@ -204,92 +200,63 @@ def get_frame_info_binary():
if object.visible_get() and object.type == 'GREASEPENCIL':
dg = bpy.context.evaluated_depsgraph_get()
obj = object.evaluated_get(dg)
frame_info.extend(("OBJECT ").encode("utf8"))

# matrix
frame_info.extend(("MATRIX ").encode("utf8"))
frame_info.extend(("OBJECT MATRIX ").encode("utf8"))
camera_space = bpy.context.scene.camera.matrix_world.inverted() @ obj.matrix_world
for i in range(4):
for j in range(4):
frame_info.extend(struct.pack("d", camera_space[i][j]))
frame_info.extend(("DONE ").encode("utf8"))

frame_info.extend(struct.pack("16d", camera_space[0][0], camera_space[0][1], camera_space[0][2], camera_space[0][3],
camera_space[1][0], camera_space[1][1], camera_space[1][2], camera_space[1][3],
camera_space[2][0], camera_space[2][1], camera_space[2][2], camera_space[2][3],
camera_space[3][0], camera_space[3][1], camera_space[3][2], camera_space[3][3]))
# strokes
frame_info.extend(("STROKES ").encode("utf8"))
frame_info.extend(("DONE STROKES ").encode("utf8"))
layers = obj.data.layers
for layer in layers:
strokes = layer.frames.data.current_frame().drawing.strokes
for stroke in strokes:
frame_info.extend(("STROKE ").encode("utf8"))

frame_info.extend(("vertexCt").encode("utf8"))
frame_info.extend(("STROKE vertexCt").encode("utf8"))
frame_info.extend(len(stroke.points).to_bytes(8, "little"))

frame_info.extend(("VERTICES").encode("utf8"))
for vert in stroke.points:
frame_info.extend(struct.pack("d", vert.position.x))
frame_info.extend(struct.pack("d", vert.position.y))
frame_info.extend(struct.pack("d", vert.position.z))
# VERTICES
frame_info.extend(("DONE ").encode("utf8"))

# STROKE
frame_info.extend(("DONE ").encode("utf8"))

# STROKES
frame_info.extend(("DONE ").encode("utf8"))
frame_info.extend(struct.pack("3d", vert.position.x, vert.position.y, vert.position.z))
# VERTICES, STROKE
frame_info.extend(("DONE DONE ").encode("utf8"))

# OBJECT
frame_info.extend(("DONE ").encode("utf8"))
# STROKES, OBJECT
frame_info.extend(("DONE DONE ").encode("utf8"))
else:
for object in bpy.data.objects:
if object.visible_get() and object.type == 'GPENCIL':
dg = bpy.context.evaluated_depsgraph_get()
obj = object.evaluated_get(dg)
frame_info.extend(("OBJECT ").encode("utf8"))

# matrix
frame_info.extend(("MATRIX ").encode("utf8"))
frame_info.extend(("OBJECT MATRIX ").encode("utf8"))
camera_space = bpy.context.scene.camera.matrix_world.inverted() @ obj.matrix_world
for i in range(4):
for j in range(4):
frame_info.extend(struct.pack("d", camera_space[i][j]))
frame_info.extend(struct.pack("16d", camera_space[0][0], camera_space[0][1], camera_space[0][2], camera_space[0][3],
camera_space[1][0], camera_space[1][1], camera_space[1][2], camera_space[1][3],
camera_space[2][0], camera_space[2][1], camera_space[2][2], camera_space[2][3],
camera_space[3][0], camera_space[3][1], camera_space[3][2], camera_space[3][3]))
# MATRIX
frame_info.extend(("DONE ").encode("utf8"))

# strokes
frame_info.extend(("STROKES ").encode("utf8"))
frame_info.extend(("DONE STROKES ").encode("utf8"))
layers = obj.data.layers
for layer in layers:
strokes = layer.frames.data.active_frame.strokes
for stroke in strokes:
frame_info.extend(("STROKE ").encode("utf8"))

frame_info.extend(("vertexCt").encode("utf8"))
frame_info.extend(("STROKE vertexCt").encode("utf8"))
frame_info.extend(len(stroke.points).to_bytes(8, "little"))

frame_info.extend(("VERTICES").encode("utf8"))
for vert in stroke.points:
frame_info.extend(struct.pack("d", vert.co[0]))
frame_info.extend(struct.pack("d", vert.co[1]))
frame_info.extend(struct.pack("d", vert.co[2]))
# VERTICES
frame_info.extend(("DONE ").encode("utf8"))

# STROKE
frame_info.extend(("DONE ").encode("utf8"))

# STROKES
frame_info.extend(("DONE ").encode("utf8"))
frame_info.extend(struct.pack("3d", vert.co[0], vert.co[1], vert.co[2]))
# VERTICES, STROKE
frame_info.extend(("DONE DONE ").encode("utf8"))

# OBJECT
frame_info.extend(("DONE ").encode("utf8"))

# OBJECTS
frame_info.extend(("DONE ").encode("utf8"))
# STROKES, OBJECT
frame_info.extend(("DONE DONE ").encode("utf8"))

# FRAME
frame_info.extend(("DONE ").encode("utf8"))
# OBJECTS, FRAME
frame_info.extend(("DONE DONE ").encode("utf8"))

return frame_info

Expand Down