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Fix Blender 5.2 texture readback corruption #67

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Merged
maybites merged 2 commits into from
Aug 25, 2026
Merged

Fix Blender 5.2 texture readback corruption #67

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82aa233
Fix Blender 5.2 texture readback layout
ThinkWithPbody Aug 10, 2026
e7c03cc
Preserve legacy texture readback layout
ThinkWithPbody Aug 24, 2026
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7 changes: 4 additions & 3 deletions fbs/ndi/NDIServer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -75,16 +75,17 @@ def send_texture(self, offscreen: gpu.types.GPUOffScreen, width: int, height: in
# Get texture data in 3d array
texture_data = texture.read()

# Convert texture data to numpy array and ensure correct format
flat_np = np.asarray(texture_data, dtype=np.uint8).transpose()
# Blender 5.2 corrected GPU buffer strides (89a0750); transpose legacy layouts only.
flat_np = np.asarray(texture_data, dtype=np.uint8)
if flat_np.strides[-1] != flat_np.itemsize:
flat_np = flat_np.transpose()

# If texture is flipped, flip it vertically while preserving RGBA channels
if is_flipped:
# Reshape to (height, width, 4) to maintain RGBA channels
flat_np = flat_np.reshape(self.height, self.width, 4)
# Flip only the height dimension
flat_np = np.flip(flat_np, axis=0)
# Flatten back to 1D array

# Flatten the array from 3d to 1d
flat_np = flat_np.flatten()
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7 changes: 4 additions & 3 deletions fbs/spout/SpoutServer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -44,9 +44,10 @@ def send_texture(self, offscreen: gpu.types.GPUOffScreen, width: int, height: in
# Read texture data
texture_data = texture.read()

# Convert texture data to numpy array and transpose
# This is the correct way to handle Blender's Buffer object
flat_np = np.asarray(texture_data, dtype=np.uint8).transpose()
# Blender 5.2 corrected GPU buffer strides (89a0750); transpose legacy layouts only.
flat_np = np.asarray(texture_data, dtype=np.uint8)
if flat_np.strides[-1] != flat_np.itemsize:
flat_np = flat_np.transpose()

# Reshape to image array (height, width, 4)
image_array = flat_np.reshape(self.height, self.width, 4)
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