diff options
Diffstat (limited to 'indra')
3 files changed, 336 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersF.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersF.glsl new file mode 100644 index 0000000000..3f70a8935b --- /dev/null +++ b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersF.glsl @@ -0,0 +1,55 @@ +/** + * @file atmosphericsHelpersF.glsl + * + * $LicenseInfo:firstyear=2005&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2005, Linden Research, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA + * $/LicenseInfo$ + */ + +uniform vec4 sunlight_color; +uniform vec4 light_ambient; + +vec3 atmosAmbient(vec3 light) +{ + return light + light_ambient.rgb; +} + +vec3 atmosAffectDirectionalLight(float lightIntensity) +{ + return sunlight_color.rgb * lightIntensity; +} + +vec3 atmosGetDiffuseSunlightColor() +{ + return sunlight_color.rgb; +} + +vec3 scaleDownLight(vec3 light) +{ + /* stub function for fallback compatibility on class1 hardware */ + return light; +} + +vec3 scaleUpLight(vec3 light) +{ + /* stub function for fallback compatibility on class1 hardware */ + return light; +} + diff --git a/indra/newview/app_settings/shaders/class3/windlight/atmosphericsF.glsl b/indra/newview/app_settings/shaders/class3/windlight/atmosphericsF.glsl new file mode 100644 index 0000000000..db8ec71b35 --- /dev/null +++ b/indra/newview/app_settings/shaders/class3/windlight/atmosphericsF.glsl @@ -0,0 +1,148 @@ +/** + * @file atmosphericsF.glsl + * + * $LicenseInfo:firstyear=2007&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2007, Linden Research, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA + * $/LicenseInfo$ + */ + + +uniform sampler2D cloudMap; +uniform vec4 cloud_pos_density1; +uniform vec4 lightnorm; +uniform vec4 sunlight_color; +uniform vec4 ambient; +uniform vec4 blue_horizon; +uniform vec4 blue_density; +uniform float haze_horizon; +uniform float haze_density; +uniform float cloud_shadow; +uniform float density_multiplier; +uniform float distance_multiplier; +uniform float max_y; +uniform vec4 glow; +uniform float scene_light_strength; +uniform mat3 ssao_effect_mat; + +vec3 getAdditiveColor(); +vec3 getAtmosAttenuation(); +vec3 getAdditiveColor(); +vec3 getAtmosAttenuation(); +void setPositionEye(vec3); +vec3 getPositionEye(); +vec3 getSunlitColor(); +vec3 getAmblitColor(); +vec3 getAdditiveColor(); +vec3 getAtmosAttenuation(); +void setPositionEye(vec3 v); +void setSunlitColor(vec3 v); +void setAmblitColor(vec3 v); +void setAdditiveColor(vec3 v); +void setAtmosAttenuation(vec3 v); + +void calcFragAtmospherics(vec3 inPositionEye, float ambFactor) { + + vec3 P = inPositionEye; + setPositionEye(P); + + vec3 tmpLightnorm = lightnorm.xyz; + + vec3 Pn = normalize(P); + float Plen = length(P); + + vec4 temp1 = vec4(0); + vec3 temp2 = vec3(0); + vec4 blue_weight; + vec4 haze_weight; + vec4 sunlight = sunlight_color; + vec4 light_atten; + + //sunlight attenuation effect (hue and brightness) due to atmosphere + //this is used later for sunlight modulation at various altitudes + light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y); + //I had thought blue_density and haze_density should have equal weighting, + //but attenuation due to haze_density tends to seem too strong + + temp1 = blue_density + vec4(haze_density); + blue_weight = blue_density / temp1; + haze_weight = vec4(haze_density) / temp1; + + //(TERRAIN) compute sunlight from lightnorm only (for short rays like terrain) + temp2.y = max(0.0, tmpLightnorm.y); + temp2.y = 1. / temp2.y; + sunlight *= exp( - light_atten * temp2.y); + + // main atmospheric scattering line integral + temp2.z = Plen * density_multiplier; + + // Transparency (-> temp1) + // ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier in a variable because the ati + // compiler gets confused. + temp1 = exp(-temp1 * temp2.z * distance_multiplier); + + //final atmosphere attenuation factor + setAtmosAttenuation(temp1.rgb); + + //compute haze glow + //(can use temp2.x as temp because we haven't used it yet) + temp2.x = dot(Pn, tmpLightnorm.xyz); + temp2.x = 1. - temp2.x; + //temp2.x is 0 at the sun and increases away from sun + temp2.x = max(temp2.x, .03); //was glow.y + //set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot) + temp2.x *= glow.x; + //higher glow.x gives dimmer glow (because next step is 1 / "angle") + temp2.x = pow(temp2.x, glow.z); + //glow.z should be negative, so we're doing a sort of (1 / "angle") function + + //add "minimum anti-solar illumination" + temp2.x += .25; + + //increase ambient when there are more clouds + vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow * 0.5; + + /* decrease value and saturation (that in HSV, not HSL) for occluded areas + * // for HSV color/geometry used here, see http://gimp-savvy.com/BOOK/index.html?node52.html + * // The following line of code performs the equivalent of: + * float ambAlpha = tmpAmbient.a; + * float ambValue = dot(vec3(tmpAmbient), vec3(0.577)); // projection onto <1/rt(3), 1/rt(3), 1/rt(3)>, the neutral white-black axis + * vec3 ambHueSat = vec3(tmpAmbient) - vec3(ambValue); + * tmpAmbient = vec4(RenderSSAOEffect.valueFactor * vec3(ambValue) + RenderSSAOEffect.saturationFactor *(1.0 - ambFactor) * ambHueSat, ambAlpha); + */ + tmpAmbient = vec4(mix(ssao_effect_mat * tmpAmbient.rgb, tmpAmbient.rgb, ambFactor), tmpAmbient.a); + + //haze color + setAdditiveColor( + vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow) + tmpAmbient) + + (haze_horizon * haze_weight) * (sunlight*(1.-cloud_shadow) * temp2.x + + tmpAmbient))); + + //brightness of surface both sunlight and ambient + setSunlitColor(vec3(sunlight * .5)); + setAmblitColor(vec3(tmpAmbient * .25)); + setAdditiveColor(getAdditiveColor() * vec3(1.0 - temp1)); +} + +vec3 atmosLighting(vec3 light) +{ + light *= getAtmosAttenuation().r; + light += getAdditiveColor(); + return (2.0 * light); +} diff --git a/indra/newview/app_settings/shaders/class3/windlight/atmosphericsV.glsl b/indra/newview/app_settings/shaders/class3/windlight/atmosphericsV.glsl new file mode 100644 index 0000000000..c064023858 --- /dev/null +++ b/indra/newview/app_settings/shaders/class3/windlight/atmosphericsV.glsl @@ -0,0 +1,133 @@ +/** + * @file atmosphericsV.glsl + * + * $LicenseInfo:firstyear=2005&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2005, Linden Research, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA + * $/LicenseInfo$ + */ + +// VARYING param funcs +void setSunlitColor(vec3 v); +void setAmblitColor(vec3 v); +void setAdditiveColor(vec3 v); +void setAtmosAttenuation(vec3 v); +void setPositionEye(vec3 v); + +vec3 getAdditiveColor(); + +// Inputs +uniform vec4 morphFactor; +uniform vec3 camPosLocal; + +uniform vec4 lightnorm; +uniform vec4 sunlight_color; +uniform vec4 ambient; +uniform vec4 blue_horizon; +uniform vec4 blue_density; +uniform float haze_horizon; +uniform float haze_density; +uniform float cloud_shadow; +uniform float density_multiplier; +uniform float distance_multiplier; +uniform float max_y; +uniform vec4 glow; + +void calcAtmospherics(vec3 inPositionEye, float ambFactor) { + + vec3 P = inPositionEye; + setPositionEye(P); + + vec3 tmpLightnorm = lightnorm.xyz; + + vec3 Pn = normalize(P); + float Plen = length(P); + + vec4 temp1 = vec4(0); + vec3 temp2 = vec3(0); + vec4 blue_weight; + vec4 haze_weight; + vec4 sunlight = sunlight_color; + vec4 light_atten; + + //sunlight attenuation effect (hue and brightness) due to atmosphere + //this is used later for sunlight modulation at various altitudes + light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y); + //I had thought blue_density and haze_density should have equal weighting, + //but attenuation due to haze_density tends to seem too strong + + temp1 = blue_density + vec4(haze_density); + blue_weight = blue_density / temp1; + haze_weight = vec4(haze_density) / temp1; + + //(TERRAIN) compute sunlight from lightnorm only (for short rays like terrain) + temp2.y = max(0.0, tmpLightnorm.y); + temp2.y = 1. / temp2.y; + sunlight *= exp( - light_atten * temp2.y); + + // main atmospheric scattering line integral + temp2.z = Plen * density_multiplier; + + // Transparency (-> temp1) + // ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier in a variable because the ati + // compiler gets confused. + temp1 = exp(-temp1 * temp2.z * distance_multiplier); + + //final atmosphere attenuation factor + setAtmosAttenuation(temp1.rgb); + + //compute haze glow + //(can use temp2.x as temp because we haven't used it yet) + temp2.x = dot(Pn, tmpLightnorm.xyz); + temp2.x = 1. - temp2.x; + //temp2.x is 0 at the sun and increases away from sun + temp2.x = max(temp2.x, .03); //was glow.y + //set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot) + temp2.x *= glow.x; + //higher glow.x gives dimmer glow (because next step is 1 / "angle") + temp2.x = pow(temp2.x, glow.z); + //glow.z should be negative, so we're doing a sort of (1 / "angle") function + + //add "minimum anti-solar illumination" + temp2.x += .25; + + //increase ambient when there are more clouds + vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow * 0.5; + + /* decrease value and saturation (that in HSV, not HSL) for occluded areas + * // for HSV color/geometry used here, see http://gimp-savvy.com/BOOK/index.html?node52.html + * // The following line of code performs the equivalent of: + * float ambAlpha = tmpAmbient.a; + * float ambValue = dot(vec3(tmpAmbient), vec3(0.577)); // projection onto <1/rt(3), 1/rt(3), 1/rt(3)>, the neutral white-black axis + * vec3 ambHueSat = vec3(tmpAmbient) - vec3(ambValue); + * tmpAmbient = vec4(RenderSSAOEffect.valueFactor * vec3(ambValue) + RenderSSAOEffect.saturationFactor *(1.0 - ambFactor) * ambHueSat, ambAlpha); + */ + tmpAmbient = vec4(mix(ssao_effect_mat * tmpAmbient.rgb, tmpAmbient.rgb, ambFactor), tmpAmbient.a); + + //haze color + setAdditiveColor( + vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow) + tmpAmbient) + + (haze_horizon * haze_weight) * (sunlight*(1.-cloud_shadow) * temp2.x + + tmpAmbient))); + + //brightness of surface both sunlight and ambient + setSunlitColor(vec3(sunlight * .5)); + setAmblitColor(vec3(tmpAmbient * .25)); + setAdditiveColor(getAdditiveColor() * vec3(1.0 - temp1)); +} |