diff options
Diffstat (limited to 'libass/ass_render.c')
| -rw-r--r-- | libass/ass_render.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/libass/ass_render.c b/libass/ass_render.c index 8bbc7be931..5f235068a5 100644 --- a/libass/ass_render.c +++ b/libass/ass_render.c @@ -1670,6 +1670,7 @@ static inline void transform_glyph_3d(FT_Glyph glyph, double *m, FT_Vector shift */ static void transform_3d(FT_Vector shift, FT_Glyph* glyph, FT_Glyph* glyph2, double frx, double fry, double frz) { + fry = - fry; // FreeType's y axis goes in the opposite direction if (frx != 0. || fry != 0. || frz != 0.) { double m[16]; double sx = sin(frx); @@ -1678,10 +1679,10 @@ static void transform_3d(FT_Vector shift, FT_Glyph* glyph, FT_Glyph* glyph2, dou double cx = cos(frx); double cy = cos(fry); double cz = cos(frz); - m[0] = cy * cz; m[1] = cz*sx*sy + sz*cx; m[2] = sz*sx - cz*cx*sy; m[3] = 0.0; - m[4] = -sz*cy; m[5] = cz*cx - sz*sy*sx; m[6] = sz*sy*cx + cz*sx; m[7] = 0.0; - m[8] = sy; m[9] = -sx*cy; m[10] = cx*cy; m[11] = 0.0; - m[12] = 0.0; m[13] = 0.0; m[14] = 0.0; m[15] = 1.0; + m[0] = cy * cz; m[1] = cy*sz; m[2] = -sy; m[3] = 0.0; + m[4] = -cx*sz + sx*sy*cz; m[5] = cx*cz + sx*sy*sz; m[6] = sx*cy; m[7] = 0.0; + m[8] = sx*sz + cx*sy*cz; m[9] = -sx*cz + cx*sy*sz; m[10] = cx*cy; m[11] = 0.0; + m[12] = 0.0; m[13] = 0.0; m[14] = 0.0; m[15] = 1.0; if (glyph && *glyph) transform_glyph_3d(*glyph, m, shift); |