diff options
Diffstat (limited to 'indra/llinventory')
| -rw-r--r-- | indra/llinventory/llsettingssky.cpp | 55 | ||||
| -rw-r--r-- | indra/llinventory/llsettingssky.h | 1 |
2 files changed, 32 insertions, 24 deletions
diff --git a/indra/llinventory/llsettingssky.cpp b/indra/llinventory/llsettingssky.cpp index a0d81e6d99..41e8882181 100644 --- a/indra/llinventory/llsettingssky.cpp +++ b/indra/llinventory/llsettingssky.cpp @@ -1180,29 +1180,34 @@ void LLSettingsSky::setHazeHorizon(F32 val) setDirtyFlag(true); } +// Get total from rayleigh and mie density values for normalization +LLColor3 LLSettingsSky::getTotalDensity() const +{ + LLColor3 blue_density = getBlueDensity(); + F32 haze_density = getHazeDensity(); + LLColor3 total_density = blue_density + smear(haze_density); + return total_density; +} + // Sunlight attenuation effect (hue and brightness) due to atmosphere // this is used later for sunlight modulation at various altitudes LLColor3 LLSettingsSky::getLightAttenuation(F32 distance) const { -// LEGACY_ATMOSPHERICS - LLColor3 blue_density = getBlueDensity(); - F32 haze_density = getHazeDensity(); F32 density_multiplier = getDensityMultiplier(); - LLColor3 density = (blue_density * 1.0 + smear(haze_density * 0.25f)); - LLColor3 light_atten = density * density_multiplier * distance; + LLColor3 blue_density = getBlueDensity(); + F32 haze_density = getHazeDensity(); + // Approximate line integral over requested distance + LLColor3 light_atten = (blue_density * 1.0 + smear(haze_density * 0.25f)) * density_multiplier * distance; return light_atten; } LLColor3 LLSettingsSky::getLightTransmittance() const { -// LEGACY_ATMOSPHERICS - LLColor3 blue_density = getBlueDensity(); - F32 haze_density = getHazeDensity(); - F32 density_multiplier = getDensityMultiplier(); - LLColor3 temp1 = blue_density + smear(haze_density); - // Transparency (-> temp1) - temp1 = componentExp((temp1 * -1.f) * density_multiplier); - return temp1; + LLColor3 total_density = getTotalDensity(); + F32 density_multiplier = getDensityMultiplier(); + // Transparency (-> density) from Beer's law + LLColor3 transmittance = componentExp(total_density * -density_multiplier); + return transmittance; } LLColor3 LLSettingsSky::gammaCorrect(const LLColor3& in) const @@ -1262,18 +1267,19 @@ void LLSettingsSky::calculateLightSettings() const { // Initialize temp variables LLColor3 sunlight = getSunlightColor(); - LLColor3 ambient = getAmbientColor(); + LLColor3 ambient = getAmbientColor(); + F32 cloud_shadow = getCloudShadow(); LLVector3 lightnorm = getLightDirection(); // Sunlight attenuation effect (hue and brightness) due to atmosphere // this is used later for sunlight modulation at various altitudes - F32 max_y = getMaxY(); - LLColor3 light_atten = getLightAttenuation(max_y); - LLColor3 light_transmittance = getLightTransmittance(); + F32 max_y = getMaxY(); + LLColor3 light_atten = getLightAttenuation(max_y); + LLColor3 light_transmittance = getLightTransmittance(); // and vary_sunlight will work properly with moon light - F32 lighty = lightnorm[1]; + F32 lighty = lightnorm[2]; if(lighty > 0.001f) { lighty = 1.f / lighty; @@ -1282,22 +1288,23 @@ void LLSettingsSky::calculateLightSettings() const componentMultBy(sunlight, componentExp((light_atten * -1.f) * lighty)); //increase ambient when there are more clouds - LLColor3 tmpAmbient = ambient + (smear(1.f) - ambient) * cloud_shadow * 0.5f; + LLColor3 tmpAmbient = ambient + (smear(1.f) - ambient) * cloud_shadow; //brightness of surface both sunlight and ambient - mSunDiffuse = gammaCorrect(componentMult(sunlight, light_transmittance)); - mSunAmbient = gammaCorrect(componentMult(tmpAmbient, light_transmittance) * 0.5); + mSunDiffuse = gammaCorrect(componentMult(sunlight, light_transmittance)); + mSunAmbient = gammaCorrect(componentMult(tmpAmbient, light_transmittance)); F32 moon_brightness = getMoonBrightness(); LLColor3 moonlight_a(0.66, 0.66, 0.66); LLColor3 moonlight_b(0.66, 0.66, 1.0); - LLColor3 moonlight = lerp(moonlight_b, moonlight_a, moon_brightness); - + LLColor3 moonlight = lerp(moonlight_b, moonlight_a, moon_brightness); + componentMultBy(moonlight, componentExp((light_atten * -1.f) * lighty)); + mMoonDiffuse = gammaCorrect(componentMult(moonlight, light_transmittance) * moon_brightness * 0.25f); mMoonAmbient = gammaCorrect(componentMult(moonlight_b, light_transmittance) * 0.0125f); - mTotalAmbient = mSunAmbient; + mTotalAmbient = mSunAmbient + mMoonAmbient; } LLUUID LLSettingsSky::GetDefaultAssetId() diff --git a/indra/llinventory/llsettingssky.h b/indra/llinventory/llsettingssky.h index d585eeddfa..ef2a6740f0 100644 --- a/indra/llinventory/llsettingssky.h +++ b/indra/llinventory/llsettingssky.h @@ -252,6 +252,7 @@ public: LLColor3 getLightAttenuation(F32 distance) const; LLColor3 getLightTransmittance() const; + LLColor3 getTotalDensity() const; LLColor3 gammaCorrect(const LLColor3& in) const; LLColor3 getBlueDensity() const; |