Module: wine Branch: master Commit: 13b16116bfdebf5e198827ad02661db7cffadbcd URL: https://gitlab.winehq.org/wine/wine/-/commit/13b16116bfdebf5e198827ad02661db...
Author: Bartosz Kosiorek gang65@poczta.onet.pl Date: Thu Dec 1 18:16:02 2022 +0100
gdiplus: Improve performance of matrix multiplication by unrolling loop.
---
dlls/gdiplus/matrix.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-)
diff --git a/dlls/gdiplus/matrix.c b/dlls/gdiplus/matrix.c index 13e7aa05e11..d790daab2af 100644 --- a/dlls/gdiplus/matrix.c +++ b/dlls/gdiplus/matrix.c @@ -39,17 +39,15 @@ WINE_DEFAULT_DEBUG_CHANNEL(gdiplus); * * and puts the output in out. * */ -static void matrix_multiply(GDIPCONST REAL * left, GDIPCONST REAL * right, REAL * out) +static inline void matrix_multiply(GDIPCONST REAL * left, GDIPCONST REAL * right, REAL * out) { REAL temp[6]; - int i, odd; - - for(i = 0; i < 6; i++){ - odd = i % 2; - temp[i] = left[i - odd] * right[odd] + left[i - odd + 1] * right[odd + 2] + - (i >= 4 ? right[odd + 4] : 0.0); - } - + temp[0] = left[0] * right[0] + left[1] * right[2]; + temp[1] = left[0] * right[1] + left[1] * right[3]; + temp[2] = left[2] * right[0] + left[3] * right[2]; + temp[3] = left[2] * right[1] + left[3] * right[3]; + temp[4] = left[4] * right[0] + left[5] * right[2] + right[4]; + temp[5] = left[4] * right[1] + left[5] * right[3] + right[5]; memcpy(out, temp, 6 * sizeof(REAL)); }