mlib_ImageBlend2_Fp_Inp(3MmediaLib Library Functmlib_ImageBlend2_Fp_Inp(3MLIB)NAMEmlib_ImageBlend2_Fp_Inp - blend with an alpha image
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_ImageBlend2_Fp_Inp(mlib_image *src2dst,
const mlib_image *src1, const mlib_image *alpha);
DESCRIPTION
The mlib_ImageBlend2_Fp_Inp() function blends two images together, in
place, on a pixel-by-pixel basis using an alpha image, when a is also
on a pixel basis. The alpha image can be a single-channel image or have
the same number of channels as the source and destination images.
It uses the following equation when the alpha image is a single-channel
image:
src2dst[x][y][i] = alpha[x][y][0]*src1[x][y][i] +
(1 - alpha[x][y][0])*src2dst[x][y][i]
It uses the following equation when the alpha image has the same number
of channels as the source and destination images:
src2dst[x][y][i] = alpha[x][y][i]*src1[x][y][i] +
(1 - alpha[x][y][i])*src2dst[x][y][i]
It uses the following equation:
PARAMETERS
The function takes the following arguments:
src2dst Pointer to second source and destination image.
src1 Pointer to first source image.
alpha Alpha image used to control blending. The pixels in this
image should have values in the range of [0.0, 1.0].
RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise it returns
MLIB_FAILURE.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Committed │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOmlib_ImageBlend(3MLIB), mlib_ImageBlend_Fp(3MLIB), mlib_Image‐
Blend1_Fp_Inp(3MLIB), mlib_ImageBlend1_Inp(3MLIB), mlib_Image‐
Blend2_Inp(3MLIB), attributes(5)SunOS 5.11 2 Mar 2007 mlib_ImageBlend2_Fp_Inp(3MLIB)