diff options
Diffstat (limited to 'indra/llimage')
| -rwxr-xr-x | indra/llimage/llimage.cpp | 46 | ||||
| -rwxr-xr-x | indra/llimage/llimage.h | 1 |
2 files changed, 47 insertions, 0 deletions
diff --git a/indra/llimage/llimage.cpp b/indra/llimage/llimage.cpp index 977bb09b63..ae3de32788 100755 --- a/indra/llimage/llimage.cpp +++ b/indra/llimage/llimage.cpp @@ -1312,6 +1312,52 @@ void LLImageRaw::colorCorrect(const U8* lut_red, const U8* lut_green, const U8* } } +void LLImageRaw::screenFilter(const S32 wave_length) +{ + const S32 components = getComponents(); + llassert( components >= 1 && components <= 4 ); + + S32 width = getWidth(); + S32 height = getHeight(); + + U8* dst_data = getData(); + for (S32 j = 0; j < height; j++) + { + for (S32 i = 0; i < width; i++) + { + F32 value = (sinf(2*F_PI*i/wave_length)*sinf(2*F_PI*j/wave_length)+1.0)*255.0/2.0; + //F32 value = (sinf(2*F_PI*i/wave_length)+1.0)*255.0/2.0; // will do line + U8 dst_value = (dst_data[VRED] >= (U8)(value) ? 255 : 0); + if (mVignetteMode == VIGNETTE_MODE_NONE) + { + dst_data[VRED] = dst_value; + dst_data[VGREEN] = dst_value; + dst_data[VBLUE] = dst_value; + } + else + { + F32 alpha = getVignetteAlpha(i,j); + if (mVignetteMode == VIGNETTE_MODE_BLEND) + { + // Blends with the source image on the edges + F32 inv_alpha = 1.0 - alpha; + dst_data[VRED] = inv_alpha * dst_data[VRED] + alpha * dst_value; + dst_data[VGREEN] = inv_alpha * dst_data[VGREEN] + alpha * dst_value; + dst_data[VBLUE] = inv_alpha * dst_data[VBLUE] + alpha * dst_value; + } + else // VIGNETTE_MODE_FADE + { + // Fade to black on the edges + dst_data[VRED] = alpha * dst_value; + dst_data[VGREEN] = alpha * dst_value; + dst_data[VBLUE] = alpha * dst_value; + } + } + dst_data += components; + } + } +} + void LLImageRaw::setVignette(EVignetteMode mode, F32 gamma, F32 min) { mVignetteMode = mode; diff --git a/indra/llimage/llimage.h b/indra/llimage/llimage.h index cc91f95624..ed17f1af21 100755 --- a/indra/llimage/llimage.h +++ b/indra/llimage/llimage.h @@ -299,6 +299,7 @@ public: // Filter Primitives void colorTransform(const LLMatrix3 &transform); void colorCorrect(const U8* lut_red, const U8* lut_green, const U8* lut_blue); + void screenFilter(const S32 wave_length); void setVignette(EVignetteMode mode, F32 gamma, F32 min); U32* getBrightnessHistogram(); |