D3DHAL_DP2UPDATEPALETTE structure (d3dhal.h)

The D3DHAL_DP2UPDATEPALETTE structure alters the palette that is used for palletized textures.

Syntax

typedef struct _D3DHAL_DP2UPDATEPALETTE {
  DWORD dwPaletteHandle;
  WORD  wStartIndex;
  WORD  wNumEntries;
} D3DHAL_DP2UPDATEPALETTE;

Members

dwPaletteHandle

Specifies a handle to the palette to be altered.

wStartIndex

Specifies the index in the palette beyond which data is updated.

wNumEntries

Specifies the number of PALETTEENTRYs being updated.

Remarks

The D3DHAL_DP2UPDATEPALETTE structure is used when responding to the D3DDP2OP_UPDATEPALETTE opcode in D3dDrawPrimitives2.

The palette handle attached to a surface is updated with wNumEntries PALETTEENTRYs starting at a specific wStartIndex member of the palette. A PALETTEENTRY (defined in wingdi.h and wtypes.h) is actually a DWORD with an ARGB color for each byte.

After the D3DHAL_DP2UPDATEPALETTE structure in the command stream, the actual palette data follows (without any padding), consisting of one DWORD per palette entry (in ARGB format, with 8 bits for each of the four channels). There is only one D3DHAL_DP2UPDATEPALETTE structure (plus palette data) following the D3DHAL_DP2COMMAND structure regardless of the value of wStateCount (a member of the D3DHAL_DP2COMMAND structure).

Requirements

See also

D3DDP2OP_UPDATEPALETTE

D3DHAL_DP2COMMAND

D3dDrawPrimitives2