diff options
Diffstat (limited to 'indra')
| -rwxr-xr-x | indra/llimage/llimagefilter.cpp | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/indra/llimage/llimagefilter.cpp b/indra/llimage/llimagefilter.cpp index 8f7e340d16..8bd7416f6a 100755 --- a/indra/llimage/llimagefilter.cpp +++ b/indra/llimage/llimagefilter.cpp @@ -510,15 +510,18 @@ void LLImageFilter::filterScreen(EScreenMode mode, const F32 wave_length, const { // Compute screen value F32 value = 0.0; - F32 d = 0.0; + F32 di = 0.0; + F32 dj = 0.0; switch (mode) { case SCREEN_MODE_2DSINE: - value = (sinf(2*F_PI*i/wave_length_pixels)*sinf(2*F_PI*j/wave_length_pixels)+1.0)*255.0/2.0; + di = cos*i + sin*j; + dj = -sin*i + cos*j; + value = (sinf(2*F_PI*di/wave_length_pixels)*sinf(2*F_PI*dj/wave_length_pixels)+1.0)*255.0/2.0; break; case SCREEN_MODE_LINE: - d = sin*i - cos*j; - value = (sinf(2*F_PI*d/wave_length_pixels)+1.0)*255.0/2.0; + dj = sin*i - cos*j; + value = (sinf(2*F_PI*dj/wave_length_pixels)+1.0)*255.0/2.0; break; } U8 dst_value = (dst_data[VRED] >= (U8)(value) ? 255 : 0); |