fg_blend()

Win32 DirectX Fastgraph/Light

Prototype

int fg_blend (int foreground, int background);

Function fg_blend (ByVal foreground As Long, ByVal background As Long) As Long

function fg_blend (foreground, background : integer) : integer;

Description

The fg_blend() function computes an alpha-blended color value from the specified foreground and background colors using the current fg_opacity() setting.

Parameters

foreground is the foreground color value. For high color virtual buffers, foreground is encoded using the 5/6/5 or 5/5/5 RGB color scheme. For true color virtual buffers, foreground is encoded as four 8-bit color components (xRGB).

background is the background color value, encoded the same way as the foreground color.

Return value

The alpha-blended color value, encoded the same way as the foreground and background colors.

Restrictions

This function is meaningful only with direct color virtual buffers.

See also

fg_blend50(), fg_blenddcb(), fg_blendvar(), fg_blendvb(), fg_blendvbv(), fg_opacity()