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Fl_Cairo_Graphics_Driver: make image drawing correct whatever the host endianness.

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This commit is contained in:
ManoloFLTK 2022-10-09 22:45:58 +02:00
parent 2a856dafd4
commit cae2b2883b
1 changed files with 5 additions and 8 deletions
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13
src/drivers/Cairo/Fl_Cairo_Graphics_Driver.cxx
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@ -831,10 +831,8 @@ void Fl_Cairo_Graphics_Driver::cache(Fl_RGB_Image *rgb) {
A = *(r+3);
f = float(A)/0xff;
}
*q = B * f;
*(q+1) = G * f;
*(q+2) = R * f;
*(q+3) = A;
// this produces ARGB data in native endian
*(uint32_t *)q = A << 24 | (uchar)(R*f) << 16 | (uchar)(G*f) << 8 | (uchar)(B*f);
r += rgb->d(); q += 4;
}
}
@ -848,10 +846,9 @@ void Fl_Cairo_Graphics_Driver::cache(Fl_RGB_Image *rgb) {
A = *(r+1);
f = float(A)/0xff;
}
*(q) = G * f;
*(q+1) = G * f;
*(q+2) = G * f;
*(q+3) = A;
G = (uchar)(G * f);
// this produces ARGB data in native endian
*(uint32_t *)q = A << 24 | G << 16 | G << 8 | G;
r += rgb->d(); q += 4;
}
}