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Commit 994d432e authored by Rye Mutt's avatar Rye Mutt :bread: Committed by Andrey Kleshchev
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Port required changes to render rainbows and sun dogs to class1 deferred sky... 

Port required changes to render rainbows and sun dogs to class1 deferred sky shader and remove redundant and slow class2 version.

# Conflicts:
#	indra/newview/app_settings/shaders/class2/deferred/skyF.glsl
parent 9104b899
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indra/newview/app_settings/shaders/class1/deferred/skyF.glsl
+ 37
− 6
View file @ 994d432e
...@@ -25,6 +25,17 @@ ...@@ -25,6 +25,17 @@
/*[EXTRA_CODE_HERE]*/ /*[EXTRA_CODE_HERE]*/
// Inputs
VARYING vec4 vary_HazeColor;
VARYING float vary_LightNormPosDot;
uniform sampler2D rainbow_map;
uniform sampler2D halo_map;
uniform float moisture_level;
uniform float droplet_radius;
uniform float ice_level;
#ifdef DEFINE_GL_FRAGCOLOR #ifdef DEFINE_GL_FRAGCOLOR
out vec4 frag_data[3]; out vec4 frag_data[3];
#else #else
...@@ -35,11 +46,27 @@ out vec4 frag_data[3]; ...@@ -35,11 +46,27 @@ out vec4 frag_data[3];
// The fragment shader for the sky // The fragment shader for the sky
///////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////
VARYING vec4 vary_HazeColor; vec3 rainbow(float d)
{
// 'Interesting' values of d are -0.75 .. -0.825, i.e. when view vec nearly opposite of sun vec
// Rainbox tex is mapped with REPEAT, so -.75 as tex coord is same as 0.25. -0.825 -> 0.175. etc.
// SL-13629
// Unfortunately the texture is inverted, so we need to invert the y coord, but keep the 'interesting'
// part within the same 0.175..0.250 range, i.e. d = (1 - d) - 1.575
d = clamp(-0.575 - d, 0.0, 1.0);
float rad = (droplet_radius - 5.0f) / 1024.0f;
return pow(texture2D(rainbow_map, vec2(rad+0.5, 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;
}
/// Soft clips the light with a gamma correction /// Soft clips the light with a gamma correction
vec3 scaleSoftClip(vec3 light); vec3 scaleSoftClip(vec3 light);
vec3 srgb_to_linear(vec3 c);
void main() void main()
{ {
...@@ -48,14 +75,18 @@ void main() ...@@ -48,14 +75,18 @@ void main()
// the fragment) if the sky wouldn't show up because the clouds // the fragment) if the sky wouldn't show up because the clouds
// are fully opaque. // are fully opaque.
vec4 color; vec4 color = vary_HazeColor;
color = vary_HazeColor;
float rel_pos_lightnorm = vary_LightNormPosDot;
float optic_d = rel_pos_lightnorm;
vec3 halo_22 = halo22(optic_d);
color.rgb += rainbow(optic_d);
color.rgb += halo_22;
color.rgb *= 2.; color.rgb *= 2.;
color.rgb = scaleSoftClip(color.rgb); color.rgb = scaleSoftClip(color.rgb);
/// Gamma correct for WL (soft clip effect). // Gamma correct for WL (soft clip effect).
frag_data[0] = vec4(color.rgb, 0.0); frag_data[0] = vec4(color.rgb, 1.0);
frag_data[1] = vec4(0.0,0.0,0.0,0.0); 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[2] = vec4(0.0,0.0,0.0,1.0); //1.0 in norm.w masks off fog
......
indra/newview/app_settings/shaders/class1/deferred/skyV.glsl
+ 19
− 16
View file @ 994d432e
...@@ -33,6 +33,7 @@ ATTRIBUTE vec3 position; ...@@ -33,6 +33,7 @@ ATTRIBUTE vec3 position;
// Output parameters // Output parameters
VARYING vec4 vary_HazeColor; VARYING vec4 vary_HazeColor;
VARYING float vary_LightNormPosDot;
// Inputs // Inputs
uniform vec3 camPosLocal; uniform vec3 camPosLocal;
...@@ -72,27 +73,29 @@ void main() ...@@ -72,27 +73,29 @@ void main()
vec3 rel_pos = position.xyz - camPosLocal.xyz + vec3(0, 50, 0); vec3 rel_pos = position.xyz - camPosLocal.xyz + vec3(0, 50, 0);
// Adj position vector to clamp altitude // Adj position vector to clamp altitude
if (rel_pos.y > 0) if (rel_pos.y > 0.)
{ {
rel_pos *= (max_y / rel_pos.y); rel_pos *= (max_y / rel_pos.y);
} }
if (rel_pos.y < 0) if (rel_pos.y < 0.)
{ {
rel_pos *= (-32000. / rel_pos.y); rel_pos *= (-32000. / rel_pos.y);
} }
// Can normalize then // Normalized
vec3 rel_pos_norm = normalize(rel_pos); vec3 rel_pos_norm = normalize(rel_pos);
float rel_pos_len = length(rel_pos);
float rel_pos_len = length(rel_pos); // Grab this value and pass to frag shader for rainbows
float rel_pos_lightnorm_dot = dot(rel_pos_norm, lightnorm.xyz);
vary_LightNormPosDot = rel_pos_lightnorm_dot;
// Initialize temp variables // Initialize temp variables
vec4 sunlight = (sun_up_factor == 1) ? sunlight_color : moonlight_color; vec4 sunlight = (sun_up_factor == 1) ? sunlight_color : moonlight_color;
vec4 light_atten;
// Sunlight attenuation effect (hue and brightness) due to atmosphere // Sunlight attenuation effect (hue and brightness) due to atmosphere
// this is used later for sunlight modulation at various altitudes // this is used later for sunlight modulation at various altitudes
light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y); vec4 light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y);
// Calculate relative weights // Calculate relative weights
vec4 combined_haze = abs(blue_density) + vec4(abs(haze_density)); vec4 combined_haze = abs(blue_density) + vec4(abs(haze_density));
...@@ -112,7 +115,7 @@ void main() ...@@ -112,7 +115,7 @@ void main()
combined_haze = exp(-combined_haze * density_dist); combined_haze = exp(-combined_haze * density_dist);
// Compute haze glow // Compute haze glow
float haze_glow = 1.0 - dot(rel_pos_norm, lightnorm.xyz); float haze_glow = 1.0 - rel_pos_lightnorm_dot;
// haze_glow is 0 at the sun and increases away from sun // haze_glow is 0 at the sun and increases away from sun
haze_glow = max(haze_glow, .001); haze_glow = max(haze_glow, .001);
// Set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot) // Set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot)
...@@ -123,30 +126,30 @@ void main() ...@@ -123,30 +126,30 @@ void main()
// Add "minimum anti-solar illumination" // Add "minimum anti-solar illumination"
// For sun, add to glow. For moon, remove glow entirely. SL-13768 // 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); haze_glow = (sun_moon_glow_factor < 1.0) ? 0.0 : (sun_moon_glow_factor * (haze_glow + 0.25));
vec4 color = // Haze color above cloud
(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 // Final atmosphere additive
color *= (1. - combined_haze); color *= (1. - combined_haze);
// Increase ambient when there are more clouds // Increase ambient when there are more clouds
vec4 tmpAmbient = ambient_color; vec4 ambient = ambient_color + max(vec4(0), (1. - ambient_color)) * cloud_shadow * 0.5;
tmpAmbient += max(vec4(0), (1. - ambient_color)) * cloud_shadow * 0.5;
// Dim sunlight by cloud shadow percentage // Dim sunlight by cloud shadow percentage
sunlight *= max(0.0, (1. - cloud_shadow)); sunlight *= max(0.0, (1. - cloud_shadow));
// Haze color below cloud // Haze color below cloud
vec4 additiveColorBelowCloud = vec4 add_below_cloud = (blue_horizon * blue_weight * (sunlight + ambient)
(blue_horizon * blue_weight * (sunlight + tmpAmbient) + (haze_horizon * haze_weight) * (sunlight * haze_glow + tmpAmbient)); + (haze_horizon * haze_weight) * (sunlight * haze_glow + ambient));
// Attenuate cloud color by atmosphere // 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 // At horizon, blend high altitude sky color towards the darker color below the clouds
color += (additiveColorBelowCloud - color) * (1. - sqrt(combined_haze)); color += (add_below_cloud - color) * (1. - sqrt(combined_haze));
// Haze color above cloud // Haze color above cloud
vary_HazeColor = color; vary_HazeColor = color;
......
indra/newview/app_settings/shaders/class2/deferred/skyF.glsl deleted 100644 → 0
+ 0
− 199
View file @ 9104b899
/**
* @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
* $/LicenseInfo$
*/
uniform mat4 modelview_projection_matrix;
// SKY ////////////////////////////////////////////////////////////////////////
// The vertex shader for creating the atmospheric sky
///////////////////////////////////////////////////////////////////////////////
// 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 float haze_horizon;
uniform float haze_density;
uniform float cloud_shadow;
uniform float density_multiplier;
uniform float distance_multiplier;
uniform float max_y;
uniform vec4 glow;
uniform float sun_moon_glow_factor;
uniform vec4 cloud_color;
#ifdef DEFINE_GL_FRAGCOLOR
out vec4 frag_data[3];
#else
#define frag_data gl_FragData
#endif
VARYING vec3 pos;
/////////////////////////////////////////////////////////////////////////
// The fragment shader for the sky
/////////////////////////////////////////////////////////////////////////
uniform sampler2D rainbow_map;
uniform sampler2D halo_map;
uniform float moisture_level;
uniform float droplet_radius;
uniform float ice_level;
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)
{
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
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);
// 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);
}
// Normalized
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;
// Sunlight attenuation effect (hue and brightness) due to atmosphere
// this is used later for sunlight modulation at various altitudes
vec4 light_atten = (blue_density + vec4(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;
// 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);
// Distance
float density_dist = rel_pos_len * density_multiplier;
// Transparency (-> combined_haze)
// ATI Bugfix -- can't store combined_haze*density_dist in a variable because the ati
// compiler gets confused.
combined_haze = exp(-combined_haze * density_dist);
// 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 *= 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"
// 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);
// 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;
// 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)
+ 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
// 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);
color.rgb += rainbow(optic_d);
color.rgb += halo_22;
color.rgb *= 2.;
color.rgb = scaleSoftClip(color.rgb);
// 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
}
indra/newview/app_settings/shaders/class2/deferred/skyV.glsl deleted 100644 → 0
+ 0
− 42
View file @ 9104b899
/**
* @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
///////////////////////////////////////////////////////////////////////////////
VARYING vec3 pos;
void main()
{
// World / view / projection
pos = position.xyz;
gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
}
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