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Fix color blending in 16-bit 5-5-5 mode

This commit is contained in:
Jeffrey Pfau 2013-11-14 23:09:13 -08:00
parent 55c6103116
commit 0bc5c4a69e
1 changed files with 5 additions and 11 deletions
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16
src/gba/renderers/video-software.c
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@ -1531,32 +1531,26 @@ static unsigned _mix(int weightA, unsigned colorA, int weightB, unsigned colorB)
a |= (colorA & 0x7C0) << 16; a |= (colorA & 0x7C0) << 16;
b |= (colorB & 0x7C0) << 16; b |= (colorB & 0x7C0) << 16;
c |= ((a * weightA + b * weightB) / 16); c |= ((a * weightA + b * weightB) / 16);
if (c & 0x0020) {
c = (c & ~0x0020) | 0x001F;
}
if (c & 0x10000) {
c = (c & ~0x10000) | 0xF800;
}
if (c & 0x08000000) { if (c & 0x08000000) {
c = (c & 0x08000000) | 0x07C00000; c = (c & 0x08000000) | 0x07C00000;
} }
c = (c & 0xFFFF) | (c >> 16);
#else #else
a = colorA & ~0x3E0; a = colorA & ~0x3E0;
b = colorB & ~0x3E0; b = colorB & ~0x3E0;
a |= (colorA & 0x3E0) << 16; a |= (colorA & 0x3E0) << 16;
b |= (colorB & 0x3E0) << 16; b |= (colorB & 0x3E0) << 16;
c |= ((a * weightA + b * weightB) / 16); c |= ((a * weightA + b * weightB) / 16);
if (c & 0x04000000) {
c = (c & 0x04000000) | 0x03E00000;
}
#endif
if (c & 0x0020) { if (c & 0x0020) {
c = (c & ~0x0020) | 0x001F; c = (c & ~0x0020) | 0x001F;
} }
if (c & 0x10000) { if (c & 0x10000) {
c = (c & ~0x10000) | 0xF800; c = (c & ~0x10000) | 0xF800;
} }
if (c & 0x04000000) { c = (c & 0xFFFF) | (c >> 16);
c = (c & 0x04000000) | 0x03E00000;
}
#endif
#else #else
a = colorA & 0xF8; a = colorA & 0xF8;
b = colorB & 0xF8; b = colorB & 0xF8;