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STATUS_GRAPHICS_GAMMA_RAMP_NOT_SUPPORTED
The path cannot apply a gamma ramp
STATUS_GRAPHICS_GAMMA_RAMP_NOT_SUPPORTED is a Windows NTSTATUS value from the graphics/display facility. For STATUS_GRAPHICS_GAMMA_RAMP_NOT_SUPPORTED, it belongs to the WDDM kernel display stack rather than to a Win32 GDI error alone, so the useful context is usually the adapter, VidPN object, child device, present path, or primary allocation involved in the call.
This status means the gamma-ramp operation is not supported on the relevant VidPN present path. The ramp data may be well formed, but the source, target, driver, or path configuration cannot apply it in that mode.
Distinguish capability from validation. If the same ramp works on another output or mode, the limiting factor is the path rather than the table. Clone, protected-output, indirect-display, or hardware overlay paths may have different color-correction capabilities.
What to check for STATUS_GRAPHICS_GAMMA_RAMP_NOT_SUPPORTED
- Query and log path color/gamma capabilities before submitting the ramp.
- Compare behavior on the same source with another target and on the same target with another mode.
- Avoid retrying different ramp values when the path reports no support for the operation.
References for STATUS_GRAPHICS_GAMMA_RAMP_NOT_SUPPORTED
- Microsoft: Introduction to Video Present Networks
- Microsoft: D3DKMDT display data types
- Microsoft: Display/graphics driver DDI overview
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