class TDDPixelFormat : public TComponent
class PACKAGE TDDPixelFormat : public TComponent

class type : MultiWrapper

• Description
• Properties
• Methods
• Events
• See-Also's

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The TDDPixelFormat component wraps multiple DDPIXELFORMAT structures, which describe the pixel format and color information of a surface.

It is used by TDx_DrawSurface::GetPixelFormat(), TDx_DrawVideoPort::GetBandwidthInfo(), TDx_DrawVideoPort::GetInputFormats and TDx_DrawVideoPort::GetOutputFormats when retrieving color and pixel format information.
It is also present in TDDSurfaceDesc and TDDVideoPortInfo.

To setup this component, first set the TDDPixelFormat::ArraySize property, then set each property using array indexes, eg:

DDPixelFormat1->ArraySize = 1;
DDPixelFormat1->Flags[0] = DDPF_PALETTEINDEXED8;

TDDPixelFormat::AlphaBitDepth refers to the bit depth for alpha-only pixel formats (DDPF_ALPHA).
To obtain the alpha bit depth when the alpa component is included with color components (DDPF_ALPHAPIXELS), count the bits in the various mask members.
For example, this function will return the number of bits set in a given bitmask:

WORD GetNumberOfBits( DWORD Mask )
{
WORD Bits = 0;
while( Mask )
{
Mask = Mask & ( Mask - 1 );
Bits++;
}
return Bits;
}

    AlphaBitDepth
    ArraySize
    BBitMask
    BumpBitCount
    BumpDuBitMask
    BumpDvBitMask
    BumpLuminanceBitMask
    ErrorValue
    Flags
    FourCC
    GBitMask
    LuminanceAlphaBitMask
    LuminanceBitCount
    LuminanceBitMask
    RBitMask
    RGBAlphaBitMask
    RGBBitCount
    RGBZBitMask
    Size
    SizeAll
    StencilBitDepth
    StencilBitMask
    UBitMask
    VBitMask
    YBitMask
    YUVAlphaBitMask
    YUVBitCount
    YUVZBitMask
    ZBitMask
    ZBufferBitDepth

    Clear
    ClearAll

    OnError