Blender Python API gpu.types.buffer Always Returns Float Type Buffer Regardless of Declared Format #116551

New Issue

shiyi-gu · 2023-12-26T11:00:31+01:00

shiyi-gu commented

2023-12-26 11:00:31 +01:00

System Information
Operating system: macOS-13.6-arm64-arm-64bit 64 Bits
Graphics card: Metal API Apple M2 1.2

Blender Version
Broken: version: 4.0.2, branch: blender-v4.0-release, commit date: 2023-12-05 07:41, hash: 9be62e85b727
Worked: (newest version of Blender that worked as expected)

Short description of error
I’ve encountered a consistent issue across multiple versions of Blender (4.0.2, 4.0.3, 4.1 Alpha) related to the Python API, specifically when using gpu.types.Buffer to create a new Buffer object. Regardless of the format I declare (e.g., INT, UBYTE, etc.), the returned buffer object is always of the FLOAT type. This behavior is not observed in the long-term stable version 3.6, where the buffer object correctly corresponds to the declared format.

Exact steps for others to reproduce the error

Open Blender (versions 4.0.2, 4.0.3, or 4.1 Alpha).
Access the Python console or run a Python script.
Use the gpu.types.Buffer API to create a new buffer object with a specified format UBYTE (other than FLOAT).
Observe that the returned buffer object is of the float type regardless of the specified format.

>>> from gpu.types import Buffer
>>> Buffer("UBYTE", (1))
Buffer(FLOAT, [0.0])

**System Information** Operating system: macOS-13.6-arm64-arm-64bit 64 Bits Graphics card: Metal API Apple M2 1.2 **Blender Version** Broken: version: 4.0.2, branch: blender-v4.0-release, commit date: 2023-12-05 07:41, hash: `9be62e85b727` Worked: (newest version of Blender that worked as expected) **Short description of error** I’ve encountered a consistent issue across multiple versions of Blender (4.0.2, 4.0.3, 4.1 Alpha) related to the Python API, specifically when using `gpu.types.Buffer` to create a new Buffer object. Regardless of the format I declare (e.g., `INT`, `UBYTE`, etc.), the returned buffer object is always of the `FLOAT` type. This behavior is not observed in the long-term stable version 3.6, where the buffer object correctly corresponds to the declared format. **Exact steps for others to reproduce the error** 1. Open Blender (versions 4.0.2, 4.0.3, or 4.1 Alpha). 2. Access the Python console or run a Python script. 3. Use the `gpu.types.Buffer` API to create a new buffer object with a specified format `UBYTE` (other than `FLOAT`). 4. Observe that the returned buffer object is of the float type regardless of the specified format. > \>\>\> from gpu.types import Buffer \>\>\> Buffer("UBYTE", (1)) Buffer(FLOAT, [0.0])

shiyi-gu added the

labels 2023-12-26 11:00:31 +01:00

Pratik Borhade commented

2023-12-27 06:35:10 +01:00

Hi, thanks for the report. Seems fine here on Windows: image
Could be Mac/metal specific. @Jeroen-Bakker , can you check?

Hi, thanks for the report. Seems fine here on Windows: [image](/attachments/da647f61-add9-49ca-b3d6-6916e4e52bff) Could be Mac/metal specific. @Jeroen-Bakker , can you check?

image.png

26 KiB

Pratik Borhade added

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Blender Python API gpu.types.buffer Always Returns Float Type Buffer Regardless of Declared Format #116551