summaryrefslogtreecommitdiff
path: root/indra/newview/app_settings/shaders
diff options
context:
space:
mode:
authorGraham Linden graham@lindenlab.com <Graham Linden graham@lindenlab.com>2018-02-26 16:41:39 +0000
committerGraham Linden graham@lindenlab.com <Graham Linden graham@lindenlab.com>2018-02-26 16:41:39 +0000
commit31017934581437836e847d8fcb5a76489f3baf50 (patch)
tree44fbb0d87c2432630b9aacbfc14aa758a6a1b5ad /indra/newview/app_settings/shaders
parent6303ef5763393021d35c55a012cacfa7ee8c650e (diff)
Add distinct versions of sky, cloud, and transport shaders so they can be different with adv atmo shaders.
Diffstat (limited to 'indra/newview/app_settings/shaders')
-rw-r--r--indra/newview/app_settings/shaders/class3/windlight/cloudsF.glsl104
-rw-r--r--indra/newview/app_settings/shaders/class3/windlight/cloudsV.glsl190
-rw-r--r--indra/newview/app_settings/shaders/class3/windlight/skyF.glsl65
-rw-r--r--indra/newview/app_settings/shaders/class3/windlight/skyV.glsl156
-rw-r--r--indra/newview/app_settings/shaders/class3/windlight/transportF.glsl53
5 files changed, 568 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class3/windlight/cloudsF.glsl b/indra/newview/app_settings/shaders/class3/windlight/cloudsF.glsl
new file mode 100644
index 0000000000..96c70651b1
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class3/windlight/cloudsF.glsl
@@ -0,0 +1,104 @@
+/**
+ * @file WLCloudsF.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
+
+/////////////////////////////////////////////////////////////////////////
+// The fragment shader for the sky
+/////////////////////////////////////////////////////////////////////////
+
+VARYING vec4 vary_CloudColorSun;
+VARYING vec4 vary_CloudColorAmbient;
+VARYING float vary_CloudDensity;
+VARYING vec2 vary_texcoord0;
+VARYING vec2 vary_texcoord1;
+VARYING vec2 vary_texcoord2;
+VARYING vec2 vary_texcoord3;
+
+uniform sampler2D cloud_noise_texture;
+uniform vec4 cloud_pos_density1;
+uniform vec4 cloud_pos_density2;
+uniform vec4 gamma;
+
+/// Soft clips the light with a gamma correction
+vec3 scaleSoftClip(vec3 light) {
+ //soft clip effect:
+ light = 1. - clamp(light, vec3(0.), vec3(1.));
+ light = 1. - pow(light, gamma.xxx);
+
+ return light;
+}
+
+void main()
+{
+ // Set variables
+ vec2 uv1 = vary_texcoord0.xy;
+ vec2 uv2 = vary_texcoord1.xy;
+
+ vec4 cloudColorSun = vary_CloudColorSun;
+ vec4 cloudColorAmbient = vary_CloudColorAmbient;
+ float cloudDensity = vary_CloudDensity;
+ vec2 uv3 = vary_texcoord2.xy;
+ vec2 uv4 = vary_texcoord3.xy;
+
+ // Offset texture coords
+ uv1 += cloud_pos_density1.xy; //large texture, visible density
+ uv2 += cloud_pos_density1.xy; //large texture, self shadow
+ uv3 += cloud_pos_density2.xy; //small texture, visible density
+ uv4 += cloud_pos_density2.xy; //small texture, self shadow
+
+
+ // Compute alpha1, the main cloud opacity
+ float alpha1 = (texture2D(cloud_noise_texture, uv1).x - 0.5) + (texture2D(cloud_noise_texture, uv3).x - 0.5) * cloud_pos_density2.z;
+ alpha1 = min(max(alpha1 + cloudDensity, 0.) * 10. * cloud_pos_density1.z, 1.);
+
+ // And smooth
+ alpha1 = 1. - alpha1 * alpha1;
+ alpha1 = 1. - alpha1 * alpha1;
+
+
+ // Compute alpha2, for self shadowing effect
+ // (1 - alpha2) will later be used as percentage of incoming sunlight
+ float alpha2 = (texture2D(cloud_noise_texture, uv2).x - 0.5);
+ alpha2 = min(max(alpha2 + cloudDensity, 0.) * 2.5 * cloud_pos_density1.z, 1.);
+
+ // And smooth
+ alpha2 = 1. - alpha2;
+ alpha2 = 1. - alpha2 * alpha2;
+
+ // Combine
+ vec4 color;
+ color = (cloudColorSun*(1.-alpha2) + cloudColorAmbient);
+ color *= 2.;
+
+ /// Gamma correct for WL (soft clip effect).
+ frag_color.rgb = scaleSoftClip(color.rgb);
+ frag_color.a = alpha1;
+}
+
diff --git a/indra/newview/app_settings/shaders/class3/windlight/cloudsV.glsl b/indra/newview/app_settings/shaders/class3/windlight/cloudsV.glsl
new file mode 100644
index 0000000000..c1dd45cd67
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class3/windlight/cloudsV.glsl
@@ -0,0 +1,190 @@
+/**
+ * @file WLCloudsV.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 mat4 modelview_projection_matrix;
+
+ATTRIBUTE vec3 position;
+ATTRIBUTE vec2 texcoord0;
+
+//////////////////////////////////////////////////////////////////////////
+// The vertex shader for creating the atmospheric sky
+///////////////////////////////////////////////////////////////////////////////
+
+// Output parameters
+VARYING vec4 vary_CloudColorSun;
+VARYING vec4 vary_CloudColorAmbient;
+VARYING float vary_CloudDensity;
+VARYING vec2 vary_texcoord0;
+VARYING vec2 vary_texcoord1;
+VARYING vec2 vary_texcoord2;
+VARYING vec2 vary_texcoord3;
+
+// Inputs
+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 max_y;
+
+uniform vec4 glow;
+
+uniform vec4 cloud_color;
+
+uniform float cloud_scale;
+
+void main()
+{
+
+ // World / view / projection
+ gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+
+ vary_texcoord0 = texcoord0;
+
+ // Get relative position
+ vec3 P = position.xyz - camPosLocal.xyz + vec3(0,50,0);
+
+ // Set altitude
+ if (P.y > 0.)
+ {
+ P *= (max_y / P.y);
+ }
+ else
+ {
+ P *= (-32000. / P.y);
+ }
+
+ // Can normalize then
+ vec3 Pn = normalize(P);
+ float Plen = length(P);
+
+ // Initialize temp variables
+ vec4 temp1 = vec4(0.);
+ vec4 temp2 = vec4(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);
+
+ // Calculate relative weights
+ temp1 = blue_density + haze_density;
+ blue_weight = blue_density / temp1;
+ haze_weight = haze_density / temp1;
+
+ // Compute sunlight from P & lightnorm (for long rays like sky)
+ temp2.y = max(0., max(0., Pn.y) * 1.0 + lightnorm.y );
+ temp2.y = 1. / temp2.y;
+ sunlight *= exp( - light_atten * temp2.y);
+
+ // Distance
+ temp2.z = Plen * density_multiplier;
+
+ // Transparency (-> temp1)
+ // ATI Bugfix -- can't store temp1*temp2.z in a variable because the ati
+ // compiler gets confused.
+ temp1 = exp(-temp1 * temp2.z);
+
+
+ // Compute haze glow
+ temp2.x = dot(Pn, lightnorm.xyz);
+ temp2.x = 1. - temp2.x;
+ // temp2.x is 0 at the sun and increases away from sun
+ temp2.x = max(temp2.x, .001);
+ // 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;
+ tmpAmbient += (1. - tmpAmbient) * cloud_shadow * 0.5;
+
+ // Dim sunlight by cloud shadow percentage
+ sunlight *= (1. - cloud_shadow);
+
+ // Haze color below cloud
+ vec4 additiveColorBelowCloud = ( blue_horizon * blue_weight * (sunlight + tmpAmbient)
+ + (haze_horizon * haze_weight) * (sunlight * temp2.x + tmpAmbient)
+ );
+
+ // CLOUDS
+
+ sunlight = sunlight_color;
+ temp2.y = max(0., lightnorm.y * 2.);
+ temp2.y = 1. / temp2.y;
+ sunlight *= exp( - light_atten * temp2.y);
+
+ // Cloud color out
+ vary_CloudColorSun = (sunlight * temp2.x) * cloud_color;
+ vary_CloudColorAmbient = tmpAmbient * cloud_color;
+
+ // Attenuate cloud color by atmosphere
+ temp1 = sqrt(temp1); //less atmos opacity (more transparency) below clouds
+ vary_CloudColorSun *= temp1;
+ vary_CloudColorAmbient *= temp1;
+ vec4 oHazeColorBelowCloud = additiveColorBelowCloud * (1. - temp1);
+
+ // Make a nice cloud density based on the cloud_shadow value that was passed in.
+ vary_CloudDensity = 2. * (cloud_shadow - 0.25);
+
+
+ // Texture coords
+ vary_texcoord0 = texcoord0;
+ vary_texcoord0.xy -= 0.5;
+ vary_texcoord0.xy /= cloud_scale;
+ vary_texcoord0.xy += 0.5;
+
+ vary_texcoord1 = vary_texcoord0;
+ vary_texcoord1.x += lightnorm.x * 0.0125;
+ vary_texcoord1.y += lightnorm.z * 0.0125;
+
+ vary_texcoord2 = vary_texcoord0 * 16.;
+ vary_texcoord3 = vary_texcoord1 * 16.;
+
+ // Combine these to minimize register use
+ vary_CloudColorAmbient += oHazeColorBelowCloud;
+
+ // needs this to compile on mac
+ //vary_AtmosAttenuation = vec3(0.0,0.0,0.0);
+
+ // END CLOUDS
+}
+
diff --git a/indra/newview/app_settings/shaders/class3/windlight/skyF.glsl b/indra/newview/app_settings/shaders/class3/windlight/skyF.glsl
new file mode 100644
index 0000000000..e2a2367626
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class3/windlight/skyF.glsl
@@ -0,0 +1,65 @@
+/**
+ * @file WLSkyF.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
+
+/////////////////////////////////////////////////////////////////////////
+// The fragment shader for the sky
+/////////////////////////////////////////////////////////////////////////
+
+VARYING vec4 vary_HazeColor;
+
+uniform sampler2D cloud_noise_texture;
+uniform vec4 gamma;
+
+/// Soft clips the light with a gamma correction
+vec3 scaleSoftClip(vec3 light) {
+ //soft clip effect:
+ light = 1. - clamp(light, vec3(0.), vec3(1.));
+ light = 1. - pow(light, gamma.xxx);
+
+ return light;
+}
+
+void main()
+{
+ // Potential Fill-rate optimization. Add cloud calculation
+ // back in and output alpha of 0 (so that alpha culling kills
+ // the fragment) if the sky wouldn't show up because the clouds
+ // are fully opaque.
+
+ vec4 color;
+ color = vary_HazeColor;
+ color *= 2.;
+
+ /// Gamma correct for WL (soft clip effect).
+ frag_color.rgb = scaleSoftClip(color.rgb);
+ frag_color.a = 1.0;
+}
+
diff --git a/indra/newview/app_settings/shaders/class3/windlight/skyV.glsl b/indra/newview/app_settings/shaders/class3/windlight/skyV.glsl
new file mode 100644
index 0000000000..3788ddaf2d
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class3/windlight/skyV.glsl
@@ -0,0 +1,156 @@
+/**
+ * @file WLSkyV.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 mat4 modelview_projection_matrix;
+
+ATTRIBUTE vec3 position;
+
+// SKY ////////////////////////////////////////////////////////////////////////
+// The vertex shader for creating the atmospheric sky
+///////////////////////////////////////////////////////////////////////////////
+
+// Output parameters
+VARYING vec4 vary_HazeColor;
+
+// Inputs
+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 max_y;
+
+uniform vec4 glow;
+
+uniform vec4 cloud_color;
+
+void main()
+{
+
+ // World / view / projection
+ gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+
+ // Get relative position
+ vec3 P = position.xyz - camPosLocal.xyz + vec3(0,50,0);
+ //vec3 P = position.xyz + vec3(0,50,0);
+
+ // Set altitude
+ if (P.y > 0.)
+ {
+ P *= (max_y / P.y);
+ }
+ else
+ {
+ P *= (-32000. / P.y);
+ }
+
+ // Can normalize then
+ vec3 Pn = normalize(P);
+ float Plen = length(P);
+
+ // Initialize temp variables
+ vec4 temp1 = vec4(0.);
+ vec4 temp2 = vec4(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);
+
+ // Calculate relative weights
+ temp1 = blue_density + haze_density;
+ blue_weight = blue_density / temp1;
+ haze_weight = haze_density / temp1;
+
+ // Compute sunlight from P & lightnorm (for long rays like sky)
+ temp2.y = max(0., max(0., Pn.y) * 1.0 + lightnorm.y );
+ temp2.y = 1. / temp2.y;
+ sunlight *= exp( - light_atten * temp2.y);
+
+ // Distance
+ temp2.z = Plen * density_multiplier;
+
+ // Transparency (-> temp1)
+ // ATI Bugfix -- can't store temp1*temp2.z in a variable because the ati
+ // compiler gets confused.
+ temp1 = exp(-temp1 * temp2.z);
+
+
+ // Compute haze glow
+ temp2.x = dot(Pn, lightnorm.xyz);
+ temp2.x = 1. - temp2.x;
+ // temp2.x is 0 at the sun and increases away from sun
+ temp2.x = max(temp2.x, .001);
+ // 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;
+
+
+ // Haze color above cloud
+ vary_HazeColor = ( blue_horizon * blue_weight * (sunlight + ambient)
+ + (haze_horizon * haze_weight) * (sunlight * temp2.x + ambient)
+ );
+
+
+ // Increase ambient when there are more clouds
+ vec4 tmpAmbient = ambient;
+ tmpAmbient += (1. - tmpAmbient) * cloud_shadow * 0.5;
+
+ // Dim sunlight by cloud shadow percentage
+ sunlight *= (1. - cloud_shadow);
+
+ // Haze color below cloud
+ vec4 additiveColorBelowCloud = ( blue_horizon * blue_weight * (sunlight + tmpAmbient)
+ + (haze_horizon * haze_weight) * (sunlight * temp2.x + tmpAmbient)
+ );
+
+ // Final atmosphere additive
+ vary_HazeColor *= (1. - temp1);
+
+ // Attenuate cloud color by atmosphere
+ temp1 = sqrt(temp1); //less atmos opacity (more transparency) below clouds
+
+ // At horizon, blend high altitude sky color towards the darker color below the clouds
+ vary_HazeColor += (additiveColorBelowCloud - vary_HazeColor) * (1. - sqrt(temp1));
+
+ // won't compile on mac without this being set
+ //vary_AtmosAttenuation = vec3(0.0,0.0,0.0);
+}
+
diff --git a/indra/newview/app_settings/shaders/class3/windlight/transportF.glsl b/indra/newview/app_settings/shaders/class3/windlight/transportF.glsl
new file mode 100644
index 0000000000..8a8e4cb0f6
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class3/windlight/transportF.glsl
@@ -0,0 +1,53 @@
+/**
+ * @file transportF.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
+ * $/LicenseInfo$
+ */
+
+//////////////////////////////////////////////////////////
+// The fragment shader for the terrain atmospherics
+//////////////////////////////////////////////////////////
+
+vec3 getAdditiveColor();
+vec3 getAtmosAttenuation();
+
+uniform sampler2D cloudMap;
+uniform vec4 cloud_pos_density1;
+
+vec3 atmosTransport(vec3 light) {
+ light *= getAtmosAttenuation().r;
+ light += getAdditiveColor() * 2.0;
+ return light;
+}
+
+vec3 fullbrightAtmosTransport(vec3 light) {
+ float brightness = dot(light.rgb, vec3(0.33333));
+
+ return mix(atmosTransport(light.rgb), light.rgb + getAdditiveColor().rgb, brightness * brightness);
+}
+
+vec3 fullbrightShinyAtmosTransport(vec3 light) {
+ float brightness = dot(light.rgb, vec3(0.33333));
+
+ return mix(atmosTransport(light.rgb), (light.rgb + getAdditiveColor().rgb) * (2.0 - brightness), brightness * brightness);
+}
+