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MILEFFECTSERR_EFFECTINMORETHANONEGRAPH
MILEFFECTSERR_EFFECTINMORETHANONEGRAPH identifies a failure in MIL effect graph ownership and membership. One effect instance is being owned by more than one effect graph. Investigation of MILEFFECTSERR_EFFECTINMORETHANONEGRAPH should preserve the original object generation before cleanup, retry, or fallback creates a secondary result.
Subsystem boundary
An effect instance has identity and graph ownership in the MILEFFECTSERR_EFFECTINMORETHANONEGRAPH path. For MILEFFECTSERR_EFFECTINMORETHANONEGRAPH, group membership, insertion, and reuse are not value-copy operations: adding the same live node twice or attaching it to another graph changes ownership semantics even if the effect parameters are identical. When MILEFFECTSERR_EFFECTINMORETHANONEGRAPH is returned, reconstruct the graph by object identity, not by display names or serialized settings.
For MILEFFECTSERR_EFFECTINMORETHANONEGRAPH, inspect the following boundary: single-graph ownership and attempted reuse of a live node.
Facts worth preserving
| Record | Why it matters here |
|---|---|
| Effect instance and owning graph or group identity | Preserving effect instance and owning graph or group identity provides the evidence needed to test this distinction: eFFECTALREADYINAGRAPH may refer to re-adding inside the same graph; this result explicitly concerns multiple graphs. |
| Connector, input, child, listener, property, or transform involved | For MILEFFECTSERR_EFFECTINMORETHANONEGRAPH, recording connector, input, child, listener, property, or transform involved separates the MIL effect graph ownership and membership boundary from a later wrapper symptom. |
| Calculated input and output bounds | In MILEFFECTSERR_EFFECTINMORETHANONEGRAPH diagnostics, recording calculated input and output bounds ties the HRESULT to the MIL effect graph ownership and membership boundary rather than to the final visible failure. |
| Construction sequence and first method returning the HRESULT | Comparing construction sequence and first method returning the HRESULT shows whether MILEFFECTSERR_EFFECTINMORETHANONEGRAPH follows input, object state, or environment. |
What each result would imply
| Test | Interpretation | Hold constant |
|---|---|---|
| Same environment, reduced input | If MILEFFECTSERR_EFFECTINMORETHANONEGRAPH disappears with a smaller faithful case, complexity within MIL effect graph ownership and membership is implicated. | For MILEFFECTSERR_EFFECTINMORETHANONEGRAPH, keep effect instance and owning graph or group identity fixed while simplifying calculated input and output bounds. |
| Same input, fresh object generation | If MILEFFECTSERR_EFFECTINMORETHANONEGRAPH changes after rebuilding state, examine ownership across the effect instance, connector builder, graph owner, listener, and bounds calculator. | For MILEFFECTSERR_EFFECTINMORETHANONEGRAPH, place connector, input, child, listener, property, or transform involved on the timeline of the last successful transition. |
| Same operation on a controlled second path | If MILEFFECTSERR_EFFECTINMORETHANONEGRAPH follows one environment, the failure is not explained by source data alone. | For MILEFFECTSERR_EFFECTINMORETHANONEGRAPH, compare visual generation, effect registration, shader profile, rendering tier, and target dimensions while preserving construction sequence and first method returning the HRESULT. |
Isolation procedure
When MILEFFECTSERR_EFFECTINMORETHANONEGRAPH is returned, create fresh effect instances for each graph and log every add, remove, group, and dispose operation. Then test deliberate duplicate insertion as a negative control so cleanup code cannot silently mask ownership mistakes in the MILEFFECTSERR_EFFECTINMORETHANONEGRAPH path.
- Clone or recreate the effect for the second graph instead of sharing the same mutable instance in the MILEFFECTSERR_EFFECTINMORETHANONEGRAPH path.
- For MILEFFECTSERR_EFFECTINMORETHANONEGRAPH, rebuild the smallest graph containing only the implicated node and one known input.
- When MILEFFECTSERR_EFFECTINMORETHANONEGRAPH is returned, log ownership changes and graph generation numbers.
- Validate the graph before allocating large intermediate resources in the MILEFFECTSERR_EFFECTINMORETHANONEGRAPH path.
Do not hide the original condition
EFFECTALREADYINAGRAPH may refer to re-adding inside the same graph; this result explicitly concerns multiple graphs. For MILEFFECTSERR_EFFECTINMORETHANONEGRAPH, do not catch the HRESULT and continue rendering with a partially connected graph; later failures can obscure the invariant that was first violated.
Verification after repair
A correction for MILEFFECTSERR_EFFECTINMORETHANONEGRAPH should let the operation at the MIL effect graph ownership and membership boundary complete repeatedly under the original supported conditions. Repeat the control that begins with “Clone or recreate the effect for the second graph instead of sharing the same mutable instance” and confirm that the following lifecycle step also succeeds. For MILEFFECTSERR_EFFECTINMORETHANONEGRAPH, keep the original failing sample and one deliberate negative case so fallback cannot be mistaken for repair.
Technical references
When MILEFFECTSERR_EFFECTINMORETHANONEGRAPH is returned, these references define the public API family, object model, or error list used to interpret this status.
- Microsoft Open Specifications: HRESULT values.
- Microsoft: WPF bitmap effects overview.
- Microsoft: PixelShader class.
- Microsoft: Direct2D custom effects.
- Microsoft: ID2D1TransformGraph.
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