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MILEFFECTSERR_NOINPUTSOURCEATTACHED
MILEFFECTSERR_NOINPUTSOURCEATTACHED identifies a failure in MIL effect connectors and input binding. An effect that requires an input image or child source has no source attached. Investigation of MILEFFECTSERR_NOINPUTSOURCEATTACHED should preserve the original object generation before cleanup, retry, or fallback creates a secondary result.
Evidence that changes the diagnosis
| Record | Why it matters here |
|---|---|
| Effect instance and owning graph or group identity | For MILEFFECTSERR_NOINPUTSOURCEATTACHED, recording effect instance and owning graph or group identity separates the MIL effect connectors and input binding boundary from a later wrapper symptom. |
| Connector, input, child, listener, property, or transform involved | In MILEFFECTSERR_NOINPUTSOURCEATTACHED diagnostics, recording connector, input, child, listener, property, or transform involved ties the HRESULT to the MIL effect connectors and input binding boundary rather than to the final visible failure. |
| Calculated input and output bounds | Comparing calculated input and output bounds shows whether MILEFFECTSERR_NOINPUTSOURCEATTACHED follows input, object state, or environment. |
| Construction sequence and first method returning the HRESULT | Preserving construction sequence and first method returning the HRESULT provides the evidence needed to test this distinction: cONNECTORNOTCONNECTED can involve a connector object that exists but is not linked; here the effect has no usable source. |
Locate the first rejecting layer
Connectors represent edges between effect nodes and are meaningful only with their owning effect and graph in the MILEFFECTSERR_NOINPUTSOURCEATTACHED path. For MILEFFECTSERR_NOINPUTSOURCEATTACHED, an unconnected connector, a connector from another effect, and a required input with no source are three different graph defects. When MILEFFECTSERR_NOINPUTSOURCEATTACHED is returned, preserve connector identity, owner identity, slot, direction, and the point at which the edge was established.
For MILEFFECTSERR_NOINPUTSOURCEATTACHED, inspect the following boundary: input-slot binding before bounds calculation or rendering.
Controlled reproduction
When MILEFFECTSERR_NOINPUTSOURCEATTACHED is returned, build one source, one effect, and one output connection. Add the disputed connector or input only after the baseline validates, and inspect both ends of the edge before bounds or shader work begins in the MILEFFECTSERR_NOINPUTSOURCEATTACHED path.
- Attach a known bitmap or child effect to the required input and leave optional inputs unset in the MILEFFECTSERR_NOINPUTSOURCEATTACHED path.
- For MILEFFECTSERR_NOINPUTSOURCEATTACHED, rebuild the smallest graph containing only the implicated node and one known input.
- When MILEFFECTSERR_NOINPUTSOURCEATTACHED is returned, log ownership changes and graph generation numbers.
- Validate the graph before allocating large intermediate resources in the MILEFFECTSERR_NOINPUTSOURCEATTACHED path.
Misleading responses
CONNECTORNOTCONNECTED can involve a connector object that exists but is not linked; here the effect has no usable source. For MILEFFECTSERR_NOINPUTSOURCEATTACHED, do not catch the HRESULT and continue rendering with a partially connected graph; later failures can obscure the invariant that was first violated.
Comparison tests
| Test | Interpretation | Hold constant |
|---|---|---|
| Same environment, reduced input | If MILEFFECTSERR_NOINPUTSOURCEATTACHED disappears with a smaller faithful case, complexity within MIL effect connectors and input binding is implicated. | For MILEFFECTSERR_NOINPUTSOURCEATTACHED, keep effect instance and owning graph or group identity fixed while simplifying calculated input and output bounds. |
| Same input, fresh object generation | If MILEFFECTSERR_NOINPUTSOURCEATTACHED changes after rebuilding state, examine ownership across the effect instance, connector builder, graph owner, listener, and bounds calculator. | For MILEFFECTSERR_NOINPUTSOURCEATTACHED, 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_NOINPUTSOURCEATTACHED follows one environment, the failure is not explained by source data alone. | For MILEFFECTSERR_NOINPUTSOURCEATTACHED, compare visual generation, effect registration, shader profile, rendering tier, and target dimensions while preserving construction sequence and first method returning the HRESULT. |
Closure criteria
A correction for MILEFFECTSERR_NOINPUTSOURCEATTACHED should let the operation at the MIL effect connectors and input binding boundary complete repeatedly under the original supported conditions. Repeat the control that begins with “Attach a known bitmap or child effect to the required input and leave optional inputs unset” and confirm that the following lifecycle step also succeeds. For MILEFFECTSERR_NOINPUTSOURCEATTACHED, keep the original failing sample and one deliberate negative case so fallback cannot be mistaken for repair.
Technical references
When MILEFFECTSERR_NOINPUTSOURCEATTACHED 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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