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ERROR_GRAPHICS_INVALID_PIXELFORMAT
What Windows rejected: graphics invalid pixelformat
The useful interpretation of ERROR_GRAPHICS_INVALID_PIXELFORMAT (0xC026233D) starts at the vidpn boundary: the source mode specifies a pixel representation not valid for that path or adapter. In practical terms, inspect VidPN source pixel format before changing application-wide graphics settings.
Build a useful diagnostic record
| Capture item | Why it matters |
|---|---|
| Supporting trace | source and target IDs, topology generation, path descriptors, pinned modes, mode-set handles and monitor timing data |
| Object identity | VidPN source pixel format |
| Rejected condition | the source mode specifies a pixel representation not valid for that path or adapter |
| What to capture | D3DDDIFORMAT/DXGI format, color basis, bits per channel, source ID and mode-set membership |
| Current graph state | VidPN, topology, source and target mode sets, and the present path connecting them |
Separate state from capability
- Capture the failing state. Record D3DDDIFORMAT/DXGI format, color basis, bits per channel, source ID and mode-set membership.
- Select a format reported by the source mode set and compare with the rejected format.
The comparison with ERROR_GRAPHICS_INVALID_COLORBASIS is especially useful: ERROR_GRAPHICS_INVALID_COLORBASIS rejects color interpretation while the pixel format may be valid.
Verify the repaired path
Enumerate supported source modes and keep format, color basis and access mode as one validated tuple.
- debug-layer, ETW or driver diagnostics no longer report the rejected VidPN source pixel format contract during the same scenario.
Technical references
- Microsoft: Introduction to Video Present Networks — background for the VidPN source pixel format.
- Microsoft: VidPN objects and interfaces
- Microsoft: Enumerating cofunctional VidPN modes
- Microsoft: Determining VidPN support
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