diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class2/windlight')
8 files changed, 331 insertions, 49 deletions
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl index ee9c990b12..1463d507bc 100644 --- a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl +++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl @@ -29,8 +29,11 @@ vec3 scaleSoftClipFrag(vec3 light); uniform int no_atmo; +vec3 srgb_to_linear(vec3 col); +vec3 linear_to_srgb(vec3 col); + vec3 atmosFragLighting(vec3 light, vec3 additive, vec3 atten) -{ +{ if (no_atmo == 1) { return light; @@ -40,6 +43,11 @@ vec3 atmosFragLighting(vec3 light, vec3 additive, vec3 atten) return light * 2.0; } +vec3 atmosFragLightingLinear(vec3 light, vec3 additive, vec3 atten) +{ + return atmosFragLighting(light, additive, atten); +} + vec3 atmosLighting(vec3 light) { return atmosFragLighting(light, getAdditiveColor(), getAtmosAttenuation()); diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsFuncs.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsFuncs.glsl new file mode 100644 index 0000000000..c69eba93b6 --- /dev/null +++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsFuncs.glsl @@ -0,0 +1,251 @@ +/** + * @file class2\windlight\atmosphericsFuncs.glsl + * + * $LicenseInfo:firstyear=2022&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2022, 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 vec3 lightnorm; +uniform vec3 sunlight_color; +uniform vec3 sunlight_linear; +uniform vec3 moonlight_color; +uniform vec3 moonlight_linear; +uniform int sun_up_factor; +uniform vec3 ambient_color; +uniform vec3 ambient_linear; +uniform vec3 blue_horizon; +uniform vec3 blue_horizon_linear; +uniform vec3 blue_density; +uniform vec3 blue_density_linear; +uniform float haze_horizon; +uniform float haze_density; +uniform float haze_density_linear; +uniform float cloud_shadow; +uniform float density_multiplier; +uniform float distance_multiplier; +uniform float max_y; +uniform vec3 glow; +uniform float scene_light_strength; +uniform mat3 ssao_effect_mat; +uniform int no_atmo; +uniform float sun_moon_glow_factor; + +float getAmbientClamp() { return 1.0f; } + +vec3 srgb_to_linear(vec3 col); + +// return colors in sRGB space +void calcAtmosphericVars(vec3 inPositionEye, vec3 light_dir, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive, + out vec3 atten, bool use_ao) +{ + vec3 rel_pos = inPositionEye; + + //(TERRAIN) limit altitude + if (abs(rel_pos.y) > max_y) rel_pos *= (max_y / rel_pos.y); + + vec3 rel_pos_norm = normalize(rel_pos); + float rel_pos_len = length(rel_pos); + vec3 sunlight = (sun_up_factor == 1) ? sunlight_color : moonlight_color; + + // sunlight attenuation effect (hue and brightness) due to atmosphere + // this is used later for sunlight modulation at various altitudes + vec3 light_atten = (blue_density + vec3(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 + + vec3 combined_haze = blue_density + vec3(haze_density); + vec3 blue_weight = blue_density / combined_haze; + vec3 haze_weight = vec3(haze_density) / combined_haze; + + //(TERRAIN) compute sunlight from lightnorm y component. Factor is roughly cosecant(sun elevation) (for short rays like terrain) + float above_horizon_factor = 1.0 / max(1e-6, lightnorm.y); + sunlight *= exp(-light_atten * above_horizon_factor); // for sun [horizon..overhead] this maps to an exp curve [0..1] + + // main atmospheric scattering line integral + float density_dist = rel_pos_len * density_multiplier; + + // Transparency (-> combined_haze) + // ATI Bugfix -- can't store combined_haze*density_dist*distance_multiplier in a variable because the ati + // compiler gets confused. + combined_haze = exp(-combined_haze * density_dist * distance_multiplier); + + // final atmosphere attenuation factor + atten = combined_haze.rgb; + + // compute haze glow + float haze_glow = dot(rel_pos_norm, lightnorm.xyz); + + // dampen sun additive contrib when not facing it... + // SL-13539: This "if" clause causes an "additive" white artifact at roughly 77 degreees. + // if (length(light_dir) > 0.01) + haze_glow *= max(0.0f, dot(light_dir, rel_pos_norm)); + + haze_glow = 1. - haze_glow; + // haze_glow is 0 at the sun and increases away from sun + haze_glow = max(haze_glow, .001); // set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot) + haze_glow *= glow.x; + // higher glow.x gives dimmer glow (because next step is 1 / "angle") + haze_glow = pow(haze_glow, glow.z); + // glow.z should be negative, so we're doing a sort of (1 / "angle") function + + // add "minimum anti-solar illumination" + haze_glow += .25; + + haze_glow *= sun_moon_glow_factor; + + vec3 amb_color = ambient_color; + + // increase ambient when there are more clouds + vec3 tmpAmbient = amb_color + (vec3(1.) - amb_color) * 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); + */ + if (use_ao) + { + tmpAmbient = mix(ssao_effect_mat * tmpAmbient.rgb, tmpAmbient.rgb, ambFactor); + } + + // Similar/Shared Algorithms: + // indra\llinventory\llsettingssky.cpp -- LLSettingsSky::calculateLightSettings() + // indra\newview\app_settings\shaders\class1\windlight\atmosphericsFuncs.glsl -- calcAtmosphericVars() + // haze color + vec3 cs = sunlight.rgb * (1. - cloud_shadow); + additive = (blue_horizon.rgb * blue_weight.rgb) * (cs + tmpAmbient.rgb) + (haze_horizon * haze_weight.rgb) * (cs * haze_glow + tmpAmbient.rgb); + + // brightness of surface both sunlight and ambient + sunlit = sunlight.rgb; + amblit = tmpAmbient.rgb; + additive *= vec3(1.0 - combined_haze); +} + + +vec3 srgb_to_linear(vec3 col); + +// provide a touch of lighting in the opposite direction of the sun light + // so areas in shadow don't lose all detail +float ambientLighting(vec3 norm, vec3 light_dir) +{ + float ambient = min(abs(dot(norm.xyz, light_dir.xyz)), 1.0); + ambient *= 0.56; + ambient *= ambient; + ambient = (1.0 - ambient); + return ambient; +} + + +// return colors in linear space +void calcAtmosphericVarsLinear(vec3 inPositionEye, vec3 norm, vec3 light_dir, out vec3 sunlit, out vec3 amblit, out vec3 additive, + out vec3 atten) +{ +#if 1 + calcAtmosphericVars(inPositionEye, light_dir, 1.0, sunlit, amblit, additive, atten, false); + sunlit = srgb_to_linear(sunlit); + additive = srgb_to_linear(additive); + amblit = ambient_linear; + + amblit *= ambientLighting(norm, light_dir); +#else + + //EXPERIMENTAL -- attempt to factor out srgb_to_linear conversions above + vec3 rel_pos = inPositionEye; + + //(TERRAIN) limit altitude + if (abs(rel_pos.y) > max_y) rel_pos *= (max_y / rel_pos.y); + + vec3 rel_pos_norm = normalize(rel_pos); + float rel_pos_len = length(rel_pos); + vec3 sunlight = (sun_up_factor == 1) ? vec3(sunlight_linear, 0.0) : vec3(moonlight_linear, 0.0); + + // sunlight attenuation effect (hue and brightness) due to atmosphere + // this is used later for sunlight modulation at various altitudes + vec3 light_atten = (blue_density + vec3(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 + + vec3 combined_haze = blue_density + vec3(haze_density); + vec3 blue_weight = blue_density / combined_haze; + vec3 haze_weight = vec3(haze_density) / combined_haze; + + //(TERRAIN) compute sunlight from lightnorm y component. Factor is roughly cosecant(sun elevation) (for short rays like terrain) + float above_horizon_factor = 1.0 / max(1e-6, lightnorm.y); + sunlight *= exp(-light_atten * above_horizon_factor); // for sun [horizon..overhead] this maps to an exp curve [0..1] + + // main atmospheric scattering line integral + float density_dist = rel_pos_len * density_multiplier; + + // Transparency (-> combined_haze) + // ATI Bugfix -- can't store combined_haze*density_dist*distance_multiplier in a variable because the ati + // compiler gets confused. + combined_haze = exp(-combined_haze * density_dist * distance_multiplier); + + // final atmosphere attenuation factor + atten = combined_haze.rgb; + + // compute haze glow + float haze_glow = dot(rel_pos_norm, lightnorm.xyz); + + // dampen sun additive contrib when not facing it... + // SL-13539: This "if" clause causes an "additive" white artifact at roughly 77 degreees. + // if (length(light_dir) > 0.01) + haze_glow *= max(0.0f, dot(light_dir, rel_pos_norm)); + + haze_glow = 1. - haze_glow; + // haze_glow is 0 at the sun and increases away from sun + haze_glow = max(haze_glow, .001); // set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot) + haze_glow *= glow.x; + // higher glow.x gives dimmer glow (because next step is 1 / "angle") + haze_glow = pow(haze_glow, glow.z); + // glow.z should be negative, so we're doing a sort of (1 / "angle") function + + // add "minimum anti-solar illumination" + haze_glow += .25; + + haze_glow *= sun_moon_glow_factor; + + //vec3 amb_color = vec4(ambient_linear, 0.0); + vec3 amb_color = ambient_color; + + // increase ambient when there are more clouds + vec3 tmpAmbient = amb_color + (vec3(1.) - amb_color) * cloud_shadow * 0.5; + + // Similar/Shared Algorithms: + // indra\llinventory\llsettingssky.cpp -- LLSettingsSky::calculateLightSettings() + // indra\newview\app_settings\shaders\class1\windlight\atmosphericsFuncs.glsl -- calcAtmosphericVars() + // haze color + vec3 cs = sunlight.rgb * (1. - cloud_shadow); + additive = (blue_horizon.rgb * blue_weight.rgb) * (cs + tmpAmbient.rgb) + (haze_horizon * haze_weight.rgb) * (cs * haze_glow + tmpAmbient.rgb); + + // brightness of surface both sunlight and ambient + sunlit = min(sunlight.rgb, vec3(1)); + amblit = tmpAmbient.rgb; + additive *= vec3(1.0 - combined_haze); + + //sunlit = sunlight_linear; + amblit = ambient_linear*0.8; +#endif +} diff --git a/indra/newview/app_settings/shaders/class2/windlight/cloudsF.glsl b/indra/newview/app_settings/shaders/class2/windlight/cloudsF.glsl index fa928d993e..9c5a4903d0 100644 --- a/indra/newview/app_settings/shaders/class2/windlight/cloudsF.glsl +++ b/indra/newview/app_settings/shaders/class2/windlight/cloudsF.glsl @@ -35,15 +35,15 @@ out vec4 frag_color; // The fragment shader for the sky ///////////////////////////////////////////////////////////////////////// -VARYING vec4 vary_CloudColorSun; -VARYING vec4 vary_CloudColorAmbient; +VARYING vec3 vary_CloudColorSun; +VARYING vec3 vary_CloudColorAmbient; VARYING float vary_CloudDensity; uniform sampler2D cloud_noise_texture; uniform sampler2D cloud_noise_texture_next; uniform float blend_factor; -uniform vec4 cloud_pos_density1; -uniform vec4 cloud_pos_density2; +uniform vec3 cloud_pos_density1; +uniform vec3 cloud_pos_density2; uniform float cloud_scale; uniform float cloud_variance; @@ -70,8 +70,8 @@ void main() vec2 uv1 = vary_texcoord0.xy; vec2 uv2 = vary_texcoord1.xy; - vec4 cloudColorSun = vary_CloudColorSun; - vec4 cloudColorAmbient = vary_CloudColorAmbient; + vec3 cloudColorSun = vary_CloudColorSun; + vec3 cloudColorAmbient = vary_CloudColorAmbient; float cloudDensity = vary_CloudDensity; vec2 uv3 = vary_texcoord2.xy; vec2 uv4 = vary_texcoord3.xy; @@ -120,7 +120,7 @@ void main() alpha2 = 1. - alpha2 * alpha2; // Combine - vec4 color; + vec3 color; color = (cloudColorSun*(1.-alpha2) + cloudColorAmbient); color.rgb *= 2.; color.rgb = scaleSoftClip(color.rgb); diff --git a/indra/newview/app_settings/shaders/class2/windlight/cloudsV.glsl b/indra/newview/app_settings/shaders/class2/windlight/cloudsV.glsl index 97ffa9feef..650009d393 100644 --- a/indra/newview/app_settings/shaders/class2/windlight/cloudsV.glsl +++ b/indra/newview/app_settings/shaders/class2/windlight/cloudsV.glsl @@ -33,8 +33,8 @@ ATTRIBUTE vec2 texcoord0; /////////////////////////////////////////////////////////////////////////////// // Output parameters -VARYING vec4 vary_CloudColorSun; -VARYING vec4 vary_CloudColorAmbient; +VARYING vec3 vary_CloudColorSun; +VARYING vec3 vary_CloudColorAmbient; VARYING float vary_CloudDensity; VARYING vec2 vary_texcoord0; @@ -46,13 +46,13 @@ VARYING float altitude_blend_factor; // Inputs uniform vec3 camPosLocal; -uniform vec4 lightnorm; -uniform vec4 sunlight_color; -uniform vec4 moonlight_color; +uniform vec3 lightnorm; +uniform vec3 sunlight_color; +uniform vec3 moonlight_color; uniform int sun_up_factor; -uniform vec4 ambient_color; -uniform vec4 blue_horizon; -uniform vec4 blue_density; +uniform vec3 ambient_color; +uniform vec3 blue_horizon; +uniform vec3 blue_density; uniform float haze_horizon; uniform float haze_density; @@ -60,10 +60,10 @@ uniform float cloud_shadow; uniform float density_multiplier; uniform float max_y; -uniform vec4 glow; +uniform vec3 glow; uniform float sun_moon_glow_factor; -uniform vec4 cloud_color; +uniform vec3 cloud_color; uniform float cloud_scale; @@ -114,17 +114,17 @@ void main() float rel_pos_len = length(rel_pos); // Initialize temp variables - vec4 sunlight = sunlight_color; - vec4 light_atten; + vec3 sunlight = sunlight_color; + vec3 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); + light_atten = (blue_density + vec3(haze_density * 0.25)) * (density_multiplier * max_y); // Calculate relative weights - vec4 combined_haze = abs(blue_density) + vec4(abs(haze_density)); - vec4 blue_weight = blue_density / combined_haze; - vec4 haze_weight = haze_density / combined_haze; + vec3 combined_haze = abs(blue_density) + vec3(abs(haze_density)); + vec3 blue_weight = blue_density / combined_haze; + vec3 haze_weight = haze_density / combined_haze; // Compute sunlight from rel_pos & lightnorm (for long rays like sky) float off_axis = 1.0 / max(1e-6, max(0., rel_pos_norm.y) + lightnorm.y); @@ -155,14 +155,14 @@ void main() haze_glow = (sun_moon_glow_factor < 1.0) ? 0.0 : (haze_glow + 0.25); // Increase ambient when there are more clouds - vec4 tmpAmbient = ambient_color; + vec3 tmpAmbient = ambient_color; tmpAmbient += (1. - tmpAmbient) * cloud_shadow * 0.5; // Dim sunlight by cloud shadow percentage sunlight *= (1. - cloud_shadow); // Haze color below cloud - vec4 additiveColorBelowCloud = + vec3 additiveColorBelowCloud = (blue_horizon * blue_weight * (sunlight + tmpAmbient) + (haze_horizon * haze_weight) * (sunlight * haze_glow + tmpAmbient)); // CLOUDS @@ -178,7 +178,7 @@ void main() combined_haze = sqrt(combined_haze); // less atmos opacity (more transparency) below clouds vary_CloudColorSun *= combined_haze; vary_CloudColorAmbient *= combined_haze; - vec4 oHazeColorBelowCloud = additiveColorBelowCloud * (1. - combined_haze); + vec3 oHazeColorBelowCloud = additiveColorBelowCloud * (1. - combined_haze); // Make a nice cloud density based on the cloud_shadow value that was passed in. vary_CloudDensity = 2. * (cloud_shadow - 0.25); diff --git a/indra/newview/app_settings/shaders/class2/windlight/gammaF.glsl b/indra/newview/app_settings/shaders/class2/windlight/gammaF.glsl index 68db7fcbb1..a32a572461 100644 --- a/indra/newview/app_settings/shaders/class2/windlight/gammaF.glsl +++ b/indra/newview/app_settings/shaders/class2/windlight/gammaF.glsl @@ -28,6 +28,21 @@ uniform int no_atmo; vec3 getAtmosAttenuation(); vec3 getAdditiveColor(); +vec3 srgb_to_linear(vec3 col); +vec3 linear_to_srgb(vec3 col); + +vec3 scaleSoftClipFragLinear(vec3 light) +{ // identical to non-linear version and that's probably close enough + if (no_atmo == 1) + { + return light; + } + //soft clip effect: + light = 1. - clamp(light, vec3(0.), vec3(1.)); + light = 1. - pow(light, vec3(gamma)); // s/b inverted already CPU-side + return light; +} + vec3 scaleSoftClipFrag(vec3 light) { if (no_atmo == 1) diff --git a/indra/newview/app_settings/shaders/class2/windlight/skyF.glsl b/indra/newview/app_settings/shaders/class2/windlight/skyF.glsl index 7146349453..7a229e0f5e 100644 --- a/indra/newview/app_settings/shaders/class2/windlight/skyF.glsl +++ b/indra/newview/app_settings/shaders/class2/windlight/skyF.glsl @@ -33,7 +33,7 @@ out vec4 frag_color; // The fragment shader for the sky ///////////////////////////////////////////////////////////////////////// -VARYING vec4 vary_HazeColor; +VARYING vec3 vary_HazeColor; /// Soft clips the light with a gamma correction vec3 scaleSoftClip(vec3 light); @@ -45,7 +45,7 @@ void main() // the fragment) if the sky wouldn't show up because the clouds // are fully opaque. - vec4 color; + vec3 color; color = vary_HazeColor; color.rgb *= 2.; /// Gamma correct for WL (soft clip effect). diff --git a/indra/newview/app_settings/shaders/class2/windlight/skyV.glsl b/indra/newview/app_settings/shaders/class2/windlight/skyV.glsl index a0a33b8642..8f7726bb0b 100644 --- a/indra/newview/app_settings/shaders/class2/windlight/skyV.glsl +++ b/indra/newview/app_settings/shaders/class2/windlight/skyV.glsl @@ -32,18 +32,18 @@ ATTRIBUTE vec3 position; /////////////////////////////////////////////////////////////////////////////// // Output parameters -VARYING vec4 vary_HazeColor; +VARYING vec3 vary_HazeColor; // Inputs uniform vec3 camPosLocal; -uniform vec4 lightnorm; -uniform vec4 sunlight_color; -uniform vec4 moonlight_color; +uniform vec3 lightnorm; +uniform vec3 sunlight_color; +uniform vec3 moonlight_color; uniform int sun_up_factor; -uniform vec4 ambient_color; -uniform vec4 blue_horizon; -uniform vec4 blue_density; +uniform vec3 ambient_color; +uniform vec3 blue_horizon; +uniform vec3 blue_density; uniform float haze_horizon; uniform float haze_density; @@ -52,11 +52,9 @@ uniform float density_multiplier; uniform float distance_multiplier; uniform float max_y; -uniform vec4 glow; +uniform vec3 glow; uniform float sun_moon_glow_factor; -uniform vec4 cloud_color; - void main() { // World / view / projection @@ -83,17 +81,17 @@ void main() float rel_pos_len = length(rel_pos); // Initialize temp variables - vec4 sunlight = (sun_up_factor == 1) ? sunlight_color : moonlight_color; - vec4 light_atten; + vec3 sunlight = (sun_up_factor == 1) ? sunlight_color : moonlight_color; + vec3 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); + light_atten = (blue_density + vec3(haze_density * 0.25)) * (density_multiplier * max_y); // Calculate relative weights - vec4 combined_haze = abs(blue_density) + vec4(abs(haze_density)); - vec4 blue_weight = blue_density / combined_haze; - vec4 haze_weight = haze_density / combined_haze; + vec3 combined_haze = abs(blue_density) + vec3(abs(haze_density)); + vec3 blue_weight = blue_density / combined_haze; + vec3 haze_weight = haze_density / combined_haze; // Compute sunlight from rel_pos & lightnorm (for long rays like sky) float off_axis = 1.0 / max(1e-6, max(0., rel_pos_norm.y) + lightnorm.y); @@ -121,21 +119,21 @@ void main() // For sun, add to glow. For moon, remove glow entirely. SL-13768 haze_glow = (sun_moon_glow_factor < 1.0) ? 0.0 : (haze_glow + 0.25); - vec4 color = + vec3 color = (blue_horizon * blue_weight * (sunlight + ambient_color) + (haze_horizon * haze_weight) * (sunlight * haze_glow + ambient_color)); // Final atmosphere additive color *= (1. - combined_haze); // Increase ambient when there are more clouds - vec4 tmpAmbient = ambient_color; - tmpAmbient += max(vec4(0), (1. - ambient_color)) * cloud_shadow * 0.5; + vec3 tmpAmbient = ambient_color; + tmpAmbient += max(vec3(0), (1. - ambient_color)) * cloud_shadow * 0.5; // Dim sunlight by cloud shadow percentage sunlight *= max(0.0, (1. - cloud_shadow)); // Haze color below cloud - vec4 additiveColorBelowCloud = + vec3 additiveColorBelowCloud = (blue_horizon * blue_weight * (sunlight + tmpAmbient) + (haze_horizon * haze_weight) * (sunlight * haze_glow + tmpAmbient)); // Attenuate cloud color by atmosphere diff --git a/indra/newview/app_settings/shaders/class2/windlight/transportF.glsl b/indra/newview/app_settings/shaders/class2/windlight/transportF.glsl index b53a2e237f..ecf0430a88 100644 --- a/indra/newview/app_settings/shaders/class2/windlight/transportF.glsl +++ b/indra/newview/app_settings/shaders/class2/windlight/transportF.glsl @@ -32,6 +32,9 @@ vec3 getAtmosAttenuation(); uniform int no_atmo; +vec3 srgb_to_linear(vec3 col); +vec3 linear_to_srgb(vec3 col); + vec3 atmosTransportFrag(vec3 light, vec3 additive, vec3 atten) { light *= atten.r; @@ -44,6 +47,13 @@ vec3 atmosTransport(vec3 light) return atmosTransportFrag(light, getAdditiveColor(), getAtmosAttenuation()); } +vec3 fullbrightAtmosTransportFragLinear(vec3 light, vec3 additive, vec3 atten) +{ + // same as non-linear version, probably fine + float brightness = dot(light.rgb * 0.5, vec3(0.3333)) + 0.1; + return mix(atmosTransportFrag(light.rgb, additive, atten), light.rgb + additive, brightness * brightness); +} + vec3 fullbrightAtmosTransportFrag(vec3 light, vec3 additive, vec3 atten) { float brightness = dot(light.rgb * 0.5, vec3(0.3333)) + 0.1; |