diff options
| -rw-r--r-- | indra/newview/app_settings/shaders/class2/deferred/skyF.glsl | 98 |
1 files changed, 51 insertions, 47 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/skyF.glsl b/indra/newview/app_settings/shaders/class2/deferred/skyF.glsl index b9e561c112..1485c515a4 100644 --- a/indra/newview/app_settings/shaders/class2/deferred/skyF.glsl +++ b/indra/newview/app_settings/shaders/class2/deferred/skyF.glsl @@ -1,24 +1,24 @@ -/** +/** * @file class2/deferred/skyF.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 * $/LicenseInfo$ */ @@ -32,13 +32,13 @@ uniform mat4 modelview_projection_matrix; // Inputs uniform vec3 camPosLocal; -uniform vec4 lightnorm; -uniform vec4 sunlight_color; -uniform vec4 moonlight_color; -uniform int sun_up_factor; -uniform vec4 ambient_color; -uniform vec4 blue_horizon; -uniform vec4 blue_density; +uniform vec4 lightnorm; +uniform vec4 sunlight_color; +uniform vec4 moonlight_color; +uniform int sun_up_factor; +uniform vec4 ambient_color; +uniform vec4 blue_horizon; +uniform vec4 blue_density; uniform float haze_horizon; uniform float haze_density; @@ -47,7 +47,7 @@ uniform float density_multiplier; uniform float distance_multiplier; uniform float max_y; -uniform vec4 glow; +uniform vec4 glow; uniform float sun_moon_glow_factor; uniform vec4 cloud_color; @@ -73,16 +73,16 @@ uniform float ice_level; vec3 rainbow(float d) { - d = clamp(d, -1.0, 0.0); - float rad = (droplet_radius - 5.0f) / 1024.0f; - return pow(texture2D(rainbow_map, vec2(rad, d)).rgb, vec3(1.8)) * moisture_level; + d = clamp(d, -1.0, 0.0); + float rad = (droplet_radius - 5.0f) / 1024.0f; + return pow(texture2D(rainbow_map, vec2(rad, d)).rgb, vec3(1.8)) * moisture_level; } vec3 halo22(float d) { - d = clamp(d, 0.1, 1.0); - float v = sqrt(clamp(1 - (d * d), 0, 1)); - return texture2D(halo_map, vec2(0, v)).rgb * ice_level; + d = clamp(d, 0.1, 1.0); + float v = sqrt(clamp(1 - (d * d), 0, 1)); + return texture2D(halo_map, vec2(0, v)).rgb * ice_level; } /// Soft clips the light with a gamma correction @@ -90,21 +90,26 @@ vec3 scaleSoftClip(vec3 light); void main() { - // World / view / projection // Get relative position (offset why?) - vec3 rel_pos = pos.xyz - camPosLocal.xyz + vec3(0,50,0); + vec3 rel_pos = pos.xyz - camPosLocal.xyz + vec3(0, 50, 0); // Adj position vector to clamp altitude - if (rel_pos.y > 0.) { rel_pos *= (max_y / rel_pos.y); } - if (rel_pos.y < 0.) { rel_pos *= (-32000. / rel_pos.y); } + if (rel_pos.y > 0.) + { + rel_pos *= (max_y / rel_pos.y); + } + if (rel_pos.y < 0.) + { + rel_pos *= (-32000. / rel_pos.y); + } // Normalized - vec3 rel_pos_norm = normalize(rel_pos); - float rel_pos_len = length(rel_pos); + vec3 rel_pos_norm = normalize(rel_pos); + float rel_pos_len = length(rel_pos); // Initialize temp variables - vec4 sunlight = (sun_up_factor == 1) ? sunlight_color : moonlight_color; + vec4 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 @@ -112,12 +117,12 @@ void main() // 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; + vec4 blue_weight = blue_density / combined_haze; + vec4 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 ); - sunlight *= exp( - light_atten * off_axis); + float off_axis = 1.0 / max(1e-6, max(0, rel_pos_norm.y) + lightnorm.y); + sunlight *= exp(-light_atten * off_axis); // Distance float density_dist = rel_pos_len * density_multiplier; @@ -129,45 +134,45 @@ void main() // Compute haze glow float haze_glow = dot(rel_pos_norm, lightnorm.xyz); - 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 = 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") + // 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 + // glow.z should be negative, so we're doing a sort of (1 / "angle") function // Add "minimum anti-solar illumination" // For sun, add to glow. For moon, remove glow entirely. SL-13768 haze_glow = (sun_moon_glow_factor < 1.0) ? 0.0 : (sun_moon_glow_factor * (haze_glow + 0.25)); // Haze color above cloud - vec4 color = blue_horizon * blue_weight * (sunlight + ambient_color) - + haze_horizon * haze_weight * (sunlight * haze_glow + ambient_color); + vec4 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 // TODO 9/20: DJH what does this do? max(0,(1-ambient)) will change the color - vec4 ambient = ambient_color + max(vec4(0), (1. - ambient_color)) * cloud_shadow * 0.5; + vec4 ambient = ambient_color + max(vec4(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 add_below_cloud = blue_horizon * blue_weight * (sunlight + ambient) + vec4 add_below_cloud = blue_horizon * blue_weight * (sunlight + ambient) + haze_horizon * haze_weight * (sunlight * haze_glow + ambient); - + // Attenuate cloud color by atmosphere - combined_haze = sqrt(combined_haze); //less atmos opacity (more transparency) below clouds + combined_haze = sqrt(combined_haze); // less atmos opacity (more transparency) below clouds // At horizon, blend high altitude sky color towards the darker color below the clouds color += (add_below_cloud - color) * (1. - sqrt(combined_haze)); - + float optic_d = dot(rel_pos_norm, lightnorm.xyz); - vec3 halo_22 = halo22(optic_d); + vec3 halo_22 = halo22(optic_d); color.rgb += rainbow(optic_d); color.rgb += halo_22; color.rgb *= 2.; @@ -175,7 +180,6 @@ void main() // Gamma correct for WL (soft clip effect). frag_data[0] = vec4(color.rgb, 1.0); - frag_data[1] = vec4(0.0,0.0,0.0,0.0); - frag_data[2] = vec4(0.0,0.0,0.0,1.0); //1.0 in norm.w masks off fog + frag_data[1] = vec4(0.0, 0.0, 0.0, 0.0); + frag_data[2] = vec4(0.0, 0.0, 0.0, 1.0); // 1.0 in norm.w masks off fog } - |