diff options
Diffstat (limited to 'indra/llimage/llimage.cpp')
| -rwxr-xr-x | indra/llimage/llimage.cpp | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/indra/llimage/llimage.cpp b/indra/llimage/llimage.cpp index d84989f9c8..3d86abb26d 100755 --- a/indra/llimage/llimage.cpp +++ b/indra/llimage/llimage.cpp @@ -1045,6 +1045,22 @@ void LLImageRaw::filterGamma(F32 gamma) colorCorrect(gamma_lut,gamma_lut,gamma_lut); } +void LLImageRaw::filterColorBalance(F32 gamma_red, F32 gamma_green, F32 gamma_blue) +{ + U8 gamma_red_lut[256]; + U8 gamma_green_lut[256]; + U8 gamma_blue_lut[256]; + + for (S32 i = 0; i < 256; i++) + { + gamma_red_lut[i] = (U8)(255.0 * (llclampf((float)(pow((float)(i)/255.0,gamma_red))))); + gamma_green_lut[i] = (U8)(255.0 * (llclampf((float)(pow((float)(i)/255.0,gamma_green))))); + gamma_blue_lut[i] = (U8)(255.0 * (llclampf((float)(pow((float)(i)/255.0,gamma_blue))))); + } + + colorCorrect(gamma_red_lut,gamma_green_lut,gamma_blue_lut); +} + void LLImageRaw::filterLinearize(F32 tail) { // Get the histogram @@ -1191,6 +1207,23 @@ void LLImageRaw::filterBrightness(S32 add) colorCorrect(brightness_lut,brightness_lut,brightness_lut); } +void LLImageRaw::filterMinMax(S32 min, S32 max) +{ + U8 contrast_lut[256]; + min = llclampb(min); + max = llclampb(max); + + F32 slope = 255.0/(F32)(max - min); + F32 translate = -slope*min; + + for (S32 i = 0; i < 256; i++) + { + contrast_lut[i] = (U8)(llclampb((S32)(slope*i + translate))); + } + + colorCorrect(contrast_lut,contrast_lut,contrast_lut); +} + // Filter Primitives void LLImageRaw::colorTransform(const LLMatrix3 &transform) { |