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MILAVERR_REQUESTEDTEXTURETOOBIG
MILAVERR_REQUESTEDTEXTURETOOBIG belongs to WPF video acceleration and texture resources. The video presentation path requested a texture larger than the device or MIL path can support. The diagnostic goal for MILAVERR_REQUESTEDTEXTURETOOBIG is to identify the first rejecting object and transition, not merely the final high-level symptom.
Subsystem boundary
For MILAVERR_REQUESTEDTEXTURETOOBIG, accelerated media playback allocates decode surfaces, mixer intermediates, presentation textures, and compositor resources under device-specific dimension and format limits. When MILAVERR_REQUESTEDTEXTURETOOBIG is returned, “Out of resources,” “acceleration unavailable,” and “texture too large” describe different decisions. Capture requested dimensions and formats before falling back, because software playback may hide the original GPU contract in the MILAVERR_REQUESTEDTEXTURETOOBIG path.
For MILAVERR_REQUESTEDTEXTURETOOBIG, inspect the following boundary: texture-dimension and allocation validation for decoded or transformed video.
Isolation procedure
Keep the source fixed and vary output dimensions, hardware acceleration, adapter, and rendering tier separately in the MILAVERR_REQUESTEDTEXTURETOOBIG path. For MILAVERR_REQUESTEDTEXTURETOOBIG, a successful low-resolution or software path narrows the resource boundary but does not prove the original accelerated configuration was valid.
- For MILAVERR_REQUESTEDTEXTURETOOBIG, render at native source size.
- When MILAVERR_REQUESTEDTEXTURETOOBIG is returned, remove scaling and effects that enlarge intermediate bounds.
- Test a smaller known-good frame size in the MILAVERR_REQUESTEDTEXTURETOOBIG path.
- For MILAVERR_REQUESTEDTEXTURETOOBIG, query device limits before creating the presentation resource.
Facts worth preserving
| Record | Why it matters here |
|---|---|
| Requested width, height, format, mip or array characteristics | In MILAVERR_REQUESTEDTEXTURETOOBIG diagnostics, recording requested width, height, format, mip or array characteristics ties the HRESULT to the WPF video acceleration and texture resources boundary rather than to the final visible failure. |
| Device maximum texture dimensions and feature level | Comparing device maximum texture dimensions and feature level shows whether MILAVERR_REQUESTEDTEXTURETOOBIG follows input, object state, or environment. |
| DPI scaling, transforms, effects, and intermediate output bounds | Preserving DPI scaling, transforms, effects, and intermediate output bounds provides the evidence needed to test this distinction: unlike MILAVERR_INSUFFICIENTVIDEORESOURCES, this can fail deterministically even on an otherwise idle GPU because the requested dimension exceeds a limit. |
| Source coded size versus presentation size | For MILAVERR_REQUESTEDTEXTURETOOBIG, recording source coded size versus presentation size separates the WPF video acceleration and texture resources boundary from a later wrapper symptom. |
What each result would imply
| Test | Interpretation | Hold constant |
|---|---|---|
| Same environment, reduced input | If MILAVERR_REQUESTEDTEXTURETOOBIG disappears with a smaller faithful case, complexity within WPF video acceleration and texture resources is implicated. | For MILAVERR_REQUESTEDTEXTURETOOBIG, keep requested width, height, format, mip or array characteristics fixed while simplifying DPI scaling, transforms, effects, and intermediate output bounds. |
| Same input, fresh object generation | If MILAVERR_REQUESTEDTEXTURETOOBIG changes after rebuilding state, examine ownership across source reader, media-type negotiation, clock, decoder, mixer, presenter, and WPF visual. | For MILAVERR_REQUESTEDTEXTURETOOBIG, place device maximum texture dimensions and feature level on the timeline of the last successful transition. |
| Same operation on a controlled second path | If MILAVERR_REQUESTEDTEXTURETOOBIG follows one environment, the failure is not explained by source data alone. | For MILAVERR_REQUESTEDTEXTURETOOBIG, compare process architecture, media stack version, rendering tier, adapter, and session state while preserving source coded size versus presentation size. |
Do not hide the original condition
Unlike MILAVERR_INSUFFICIENTVIDEORESOURCES, this can fail deterministically even on an otherwise idle GPU because the requested dimension exceeds a limit. For MILAVERR_REQUESTEDTEXTURETOOBIG, do not treat the constant name as a complete root-cause report; preserve the nested media, COM, graphics, or driver result before resetting the player.
Verification after repair
A correction for MILAVERR_REQUESTEDTEXTURETOOBIG should let the operation at the WPF video acceleration and texture resources boundary complete repeatedly under the original supported conditions. Repeat the control that begins with “Render at native source size” and confirm that the following lifecycle step also succeeds. For MILAVERR_REQUESTEDTEXTURETOOBIG, keep the original failing sample and one deliberate negative case so fallback cannot be mistaken for repair.
Technical references
When MILAVERR_REQUESTEDTEXTURETOOBIG 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: Multimedia overview for WPF.
- Microsoft: MediaElement class.
- Microsoft: MediaClock class.
- Microsoft: WPF graphics rendering tiers.
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