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 | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/indra/newview/app_settings/shaders/class3/deferred/skyF.glsl b/indra/newview/app_settings/shaders/class3/deferred/skyF.glsl deleted file mode 100644 index a0b082ed7c..0000000000 --- a/indra/newview/app_settings/shaders/class3/deferred/skyF.glsl +++ /dev/null @@ -1,126 +0,0 @@ -/** - * @file class3/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 - * $/LicenseInfo$ - */ - -#ifdef DEFINE_GL_FRAGCOLOR -out vec4 frag_data[3]; -#else -#define frag_data gl_FragData -#endif - -VARYING vec2 vary_frag; - -uniform vec3 camPosLocal; -uniform vec3 sun_dir; -uniform float sun_size; -uniform float far_z; -uniform mat4 inv_proj; -uniform mat4 inv_modelview; - -uniform sampler2D transmittance_texture; -uniform sampler3D scattering_texture; -uniform sampler3D single_mie_scattering_texture; -uniform sampler2D irradiance_texture; -uniform sampler2D rainbow_map; -uniform sampler2D halo_map; - -uniform float moisture_level; -uniform float droplet_radius; -uniform float ice_level; - -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 ColorFromRadiance(vec3 radiance); -vec3 rainbow(float d) -{ - // d is the dot product of view and sun directions, so ranging -1.0..1.0 - // 'interesting' values of d are the range -0.75..-0.825, when view is nearly opposite of sun vec - // Rainbox texture mode is GL_REPEAT, so tc of -.75 is equiv to 0.25, -0.825 equiv to 0.175. - - // SL-13629 Rainbow texture has colors within the correct .175...250 range, but order is inverted. - // Rather than replace the texture, we mirror and translate the y tc to keep the colors within the - // interesting range, but in reversed order: i.e. d = (1 - d) - 1.575 - d = clamp(-0.575 - d, 0.0, 1.0); - - // With the colors in the lower 1/4 of the texture, inverting the coords leaves most of it inaccessible. - // So, we can stretch the texcoord above the colors (ie > 0.25) to fill the entire remaining coordinate - // space. This improves gradation, reduces banding within the rainbow interior. (1-0.25) / (0.425/0.25) = 4.2857 - float interior_coord = max(0.0, d - 0.25) * 4.2857; - d = clamp(d, 0.0, 0.25) + interior_coord; - - 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) -{ - float v = sqrt(max(0, 1 - (d*d))); - return texture2D(halo_map, vec2(0, v)).rgb * ice_level; -} - -void main() -{ - vec3 pos = vec3((vary_frag * 2.0) - vec2(1.0, 1.0f), 1.0); - vec4 view_pos = (inv_proj * vec4(pos, 1.0f)); - - view_pos /= view_pos.w; - - vec3 view_ray = (inv_modelview * vec4(view_pos.xyz, 0.0f)).xyz + camPosLocal; - - vec3 view_direction = normalize(view_ray); - vec3 sun_direction = normalize(sun_dir); - vec3 earth_center = vec3(0, 0, -6360.0f); - vec3 camPos = (camPosLocal / 1000.0f) - earth_center; - - vec3 transmittance; - vec3 radiance_sun = GetSkyLuminance(camPos, view_direction, 0.0f, sun_direction, transmittance); - vec3 solar_luminance = GetSolarLuminance(); - - // If the view ray intersects the Sun, add the Sun radiance. - float s = dot(view_direction, sun_direction); - - // cheesy solar disc... - if (s >= (sun_size * 0.999)) - { - radiance_sun += pow(smoothstep(0.0, 1.3, (s - (sun_size * 0.9))), 2.0) * solar_luminance * transmittance; - } - s = smoothstep(0.9, 1.0, s) * 16.0f; - - vec3 color = ColorFromRadiance(radiance_sun); - - float optic_d = dot(view_direction, sun_direction); - vec3 halo_22 = halo22(optic_d); - - color.rgb += rainbow(optic_d) * optic_d; - color.rgb += halo_22; - - color = pow(color, vec3(1.0/2.2)); - - frag_data[0] = vec4(color, 1.0 + s); - frag_data[1] = vec4(0.0); - frag_data[2] = vec4(0.0, 1.0, 0.0, 1.0); -} - |