D3DDDI_MULTIPLANE_OVERLAY_BLEND - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// d3dumddi.h

typedef enum _D3DDDI_MULTIPLANE_OVERLAY_BLEND {
  D3DDDI_MULTIPLANE_OVERLAY_BLEND_OPAQUE,
  D3DDDI_MULTIPLANE_OVERLAY_BLEND_ALPHABLEND
} D3DDDI_MULTIPLANE_OVERLAY_BLEND;
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (ne-d3dumddi-_d3dddi_multiplane_overlay_blend)

_D3DDDI_MULTIPLANE_OVERLAY_BLEND enumeration

Description

Identifies a blend operation to be performed on an overlay plane.

Constants

D3DDDI_MULTIPLANE_OVERLAY_BLEND_OPAQUE

The overlay plane should ignore data in the alpha channel and make the blended plane entirely opaque.

D3DDDI_MULTIPLANE_OVERLAY_BLEND_ALPHABLEND

The overlay plane should use the pre-multiplied alpha channel in this plane to blend it with the plane beneath.

View the official Windows Driver Kit DDI reference

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