diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class3/deferred/skyF.glsl')
-rw-r--r-- | indra/newview/app_settings/shaders/class3/deferred/skyF.glsl | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class3/deferred/skyF.glsl b/indra/newview/app_settings/shaders/class3/deferred/skyF.glsl new file mode 100644 index 0000000000..47fa0efe06 --- /dev/null +++ b/indra/newview/app_settings/shaders/class3/deferred/skyF.glsl @@ -0,0 +1,85 @@ +/** + * @file advancedAtmoF.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 + * $/LicenseInfo$ + */ + +#ifdef DEFINE_GL_FRAGCOLOR +out vec4 frag_color; +#else +#define frag_color gl_FragColor +#endif + +in vec3 view_pos; +in vec3 view_dir; + +uniform vec3 cameraPosLocal; +uniform vec3 sun_dir; +uniform float sun_size; + +uniform sampler2D transmittance_texture; +uniform sampler3D scattering_texture; +uniform sampler3D single_mie_scattering_texture; +uniform sampler2D irradiance_texture; + +vec3 GetSolarLuminance(); +vec3 GetSkyLuminance(vec3 camPos, vec3 view_dir, float shadow_length, vec3 dir, out vec3 transmittance); +vec3 GetSkyLuminanceToPoint(vec3 camPos, vec3 pos, float shadow_length, vec3 dir, out vec3 transmittance); +vec3 GetSunAndSkyIlluminance(vec3 pos, vec3 norm, vec3 dir, out vec3 sky_irradiance); + +void main() +{ + vec3 view_direction = normalize(view_dir); + + vec3 sun_direction = sun_dir; + + vec3 camPos = cameraPosLocal + vec3(0, 0, 6360.0f); + vec3 transmittance; + vec3 sky_illum; + + vec3 radiance_sun = GetSkyLuminance(camPos, view_direction, 0.0f, sun_direction, transmittance); + vec3 radiance2_sun = GetSunAndSkyIlluminance(camPos, view_direction, sun_direction, sky_illum); + + radiance_sun *= transmittance; + + vec3 solar_luminance = transmittance * GetSolarLuminance(); + + // If the view ray intersects the Sun, add the Sun radiance. + if (dot(view_direction, sun_direction) >= sun_size) + { + radiance_sun = radiance_sun + solar_luminance; + } + + vec3 color = radiance_sun; + + color = vec3(1.0) - exp(-color * 0.0001); + + //float d = dot(view_direction, sun_direction); + //frag_color.rgb = vec3(d, d >= sun_size ? 1.0f : 0.0f, 0.0f); + + frag_color.rgb = color; + //frag_color.rgb = vec3(dot(view_direction, sun_direction) > 0.95f ? 1.0 : 0.0, 0,0); + //frag_color.rgb = normalize(view_pos); + + frag_color.a = 1.0; +} + |