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-rw-r--r--indra/newview/app_settings/shaders/class1/deferred/materialF.glsl1227
1 files changed, 439 insertions, 788 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
index 07d28ed4cd..0afd1a9672 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
@@ -1,788 +1,439 @@
-/**
- * @file materialF.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
- * $/LicenseInfo$
- */
-
-#define DIFFUSE_ALPHA_MODE_IGNORE 0
-#define DIFFUSE_ALPHA_MODE_BLEND 1
-#define DIFFUSE_ALPHA_MODE_MASK 2
-#define DIFFUSE_ALPHA_MODE_EMISSIVE 3
-
-uniform float emissive_brightness;
-uniform float display_gamma;
-
-vec3 srgb_to_linear(vec3 cs)
-{
- vec3 low_range = cs / vec3(12.92);
- vec3 high_range = pow((cs+vec3(0.055))/vec3(1.055), vec3(2.4));
- bvec3 lte = lessThanEqual(cs,vec3(0.04045));
-
-#ifdef OLD_SELECT
- vec3 result;
- result.r = lte.r ? low_range.r : high_range.r;
- result.g = lte.g ? low_range.g : high_range.g;
- result.b = lte.b ? low_range.b : high_range.b;
- return result;
-#else
- return mix(high_range, low_range, lte);
-#endif
-
-}
-
-vec3 linear_to_srgb(vec3 cl)
-{
- cl = clamp(cl, vec3(0), vec3(1));
- vec3 low_range = cl * 12.92;
- vec3 high_range = 1.055 * pow(cl, vec3(0.41666)) - 0.055;
- bvec3 lt = lessThan(cl,vec3(0.0031308));
-
-#ifdef OLD_SELECT
- vec3 result;
- result.r = lt.r ? low_range.r : high_range.r;
- result.g = lt.g ? low_range.g : high_range.g;
- result.b = lt.b ? low_range.b : high_range.b;
- return result;
-#else
- return mix(high_range, low_range, lt);
-#endif
-
-}
-
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-#if HAS_SUN_SHADOW
-
-uniform sampler2DShadow shadowMap0;
-uniform sampler2DShadow shadowMap1;
-uniform sampler2DShadow shadowMap2;
-uniform sampler2DShadow shadowMap3;
-
-uniform mat4 shadow_matrix[6];
-uniform vec4 shadow_clip;
-uniform vec2 shadow_res;
-uniform float shadow_bias;
-
-float pcfShadow(sampler2DShadow shadowMap, vec4 stc)
-{
- stc.xyz /= stc.w;
- stc.z += shadow_bias;
-
- stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y*12345))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
-
- float cs = shadow2D(shadowMap, stc.xyz).x;
- float shadow = cs;
-
- shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
- shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
- shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
- shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-
- return shadow*0.2;
-}
-
-#endif
-
-uniform samplerCube environmentMap;
-uniform sampler2D lightFunc;
-
-// Inputs
-uniform vec4 morphFactor;
-uniform vec3 camPosLocal;
-//uniform vec4 camPosWorld;
-uniform vec4 gamma;
-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 distance_multiplier;
-uniform float max_y;
-uniform vec4 glow;
-uniform float scene_light_strength;
-uniform mat3 env_mat;
-uniform mat3 ssao_effect_mat;
-
-uniform vec3 sun_dir;
-VARYING vec2 vary_fragcoord;
-
-VARYING vec3 vary_position;
-
-vec3 vary_PositionEye;
-
-vec3 vary_SunlitColor;
-vec3 vary_AmblitColor;
-vec3 vary_AdditiveColor;
-vec3 vary_AtmosAttenuation;
-
-uniform mat4 inv_proj;
-uniform vec2 screen_res;
-
-uniform vec4 light_position[8];
-uniform vec3 light_direction[8];
-uniform vec3 light_attenuation[8];
-uniform vec3 light_diffuse[8];
-
-#ifdef WATER_FOG
-uniform vec4 waterPlane;
-uniform vec4 waterFogColor;
-uniform float waterFogDensity;
-uniform float waterFogKS;
-
-vec4 applyWaterFogDeferred(vec3 pos, vec4 color)
-{
- //normalize view vector
- vec3 view = normalize(pos);
- float es = -(dot(view, waterPlane.xyz));
-
- //find intersection point with water plane and eye vector
-
- //get eye depth
- float e0 = max(-waterPlane.w, 0.0);
-
- vec3 int_v = waterPlane.w > 0.0 ? view * waterPlane.w/es : vec3(0.0, 0.0, 0.0);
-
- //get object depth
- float depth = length(pos - int_v);
-
- //get "thickness" of water
- float l = max(depth, 0.1);
-
- float kd = waterFogDensity;
- float ks = waterFogKS;
- vec4 kc = waterFogColor;
-
- float F = 0.98;
-
- float t1 = -kd * pow(F, ks * e0);
- float t2 = kd + ks * es;
- float t3 = pow(F, t2*l) - 1.0;
-
- float L = min(t1/t2*t3, 1.0);
-
- float D = pow(0.98, l*kd);
-
- color.rgb = color.rgb * D + kc.rgb * L;
- color.a = kc.a + color.a;
-
- return color;
-}
-#endif
-
-vec3 calcDirectionalLight(vec3 n, vec3 l)
-{
- float a = max(dot(n,l),0.0);
- return vec3(a,a,a);
-}
-
-
-vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 npos, vec3 diffuse, vec4 spec, vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight, inout float glare)
-{
- //get light vector
- vec3 lv = lp.xyz-v;
-
- //get distance
- float d = length(lv);
-
- float da = 1.0;
-
- vec3 col = vec3(0,0,0);
-
- if (d > 0.0 && la > 0.0 && fa > 0.0)
- {
- //normalize light vector
- lv = normalize(lv);
-
- //distance attenuation
- float dist = d/la;
- float dist_atten = clamp(1.0-(dist-1.0*(1.0-fa))/fa, 0.0, 1.0);
- dist_atten *= dist_atten;
- dist_atten *= 2.0;
-
- // spotlight coefficient.
- float spot = max(dot(-ln, lv), is_pointlight);
- da *= spot*spot; // GL_SPOT_EXPONENT=2
-
- //angular attenuation
- da *= max(dot(n, lv), 0.0);
-
- float lit = max(da * dist_atten, 0.0);
-
- col = light_col*lit*diffuse;
-
- if (spec.a > 0.0)
- {
- //vec3 ref = dot(pos+lv, norm);
- vec3 h = normalize(lv+npos);
- float nh = dot(n, h);
- float nv = dot(n, npos);
- float vh = dot(npos, h);
- float sa = nh;
- float fres = pow(1 - dot(h, npos), 5)*0.4+0.5;
-
- float gtdenom = 2 * nh;
- float gt = max(0, min(gtdenom * nv / vh, gtdenom * da / vh));
-
- if (nh > 0.0)
- {
- float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da);
- vec3 speccol = lit*scol*light_col.rgb*spec.rgb;
- col += speccol;
-
- float cur_glare = max(speccol.r, speccol.g);
- cur_glare = max(cur_glare, speccol.b);
- glare = max(glare, speccol.r);
- glare += max(cur_glare, 0.0);
- //col += spec.rgb;
- }
- }
- }
-
- return max(col, vec3(0.0,0.0,0.0));
-
-}
-
-vec4 getPosition_d(vec2 pos_screen, float depth)
-{
- vec2 sc = pos_screen.xy*2.0;
- sc /= screen_res;
- sc -= vec2(1.0,1.0);
- vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
- vec4 pos = inv_proj * ndc;
- pos /= pos.w;
- pos.w = 1.0;
- return pos;
-}
-
-#ifndef WATER_FOG
-vec3 getPositionEye()
-{
- return vary_PositionEye;
-}
-#endif
-
-vec3 getSunlitColor()
-{
- return vary_SunlitColor;
-}
-vec3 getAmblitColor()
-{
- return vary_AmblitColor;
-}
-vec3 getAdditiveColor()
-{
- return vary_AdditiveColor;
-}
-vec3 getAtmosAttenuation()
-{
- return vary_AtmosAttenuation;
-}
-
-void setPositionEye(vec3 v)
-{
- vary_PositionEye = v;
-}
-
-void setSunlitColor(vec3 v)
-{
- vary_SunlitColor = v;
-}
-
-void setAmblitColor(vec3 v)
-{
- vary_AmblitColor = v;
-}
-
-void setAdditiveColor(vec3 v)
-{
- vary_AdditiveColor = v;
-}
-
-void setAtmosAttenuation(vec3 v)
-{
- vary_AtmosAttenuation = v;
-}
-
-void calcAtmospherics(vec3 inPositionEye, float ambFactor) {
-
- vec3 P = inPositionEye;
- setPositionEye(P);
-
- vec3 tmpLightnorm = lightnorm.xyz;
-
- vec3 Pn = normalize(P);
- float Plen = length(P);
-
- vec4 temp1 = vec4(0);
- vec3 temp2 = vec3(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);
- //I had thought blue_density and haze_density should have equal weighting,
- //but attenuation due to haze_density tends to seem too strong
-
- temp1 = blue_density + vec4(haze_density);
- blue_weight = blue_density / temp1;
- haze_weight = vec4(haze_density) / temp1;
-
- //(TERRAIN) compute sunlight from lightnorm only (for short rays like terrain)
- temp2.y = max(0.0, tmpLightnorm.y);
- temp2.y = 1. / temp2.y;
- sunlight *= exp( - light_atten * temp2.y);
-
- // main atmospheric scattering line integral
- temp2.z = Plen * density_multiplier;
-
- // Transparency (-> temp1)
- // ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier in a variable because the ati
- // compiler gets confused.
- temp1 = exp(-temp1 * temp2.z * distance_multiplier);
-
- //final atmosphere attenuation factor
- setAtmosAttenuation(temp1.rgb);
-
- //compute haze glow
- //(can use temp2.x as temp because we haven't used it yet)
- temp2.x = dot(Pn, tmpLightnorm.xyz);
- temp2.x = 1. - temp2.x;
- //temp2.x is 0 at the sun and increases away from sun
- temp2.x = max(temp2.x, .03); //was glow.y
- //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 + (vec4(1.) - ambient) * cloud_shadow * 0.5;
-
- /* decrease value and saturation (that in HSV, not HSL) for occluded areas
- * // for HSV color/geometry used here, see http://gimp-savvy.com/BOOK/index.html?node52.html
- * // The following line of code performs the equivalent of:
- * float ambAlpha = tmpAmbient.a;
- * float ambValue = dot(vec3(tmpAmbient), vec3(0.577)); // projection onto <1/rt(3), 1/rt(3), 1/rt(3)>, the neutral white-black axis
- * vec3 ambHueSat = vec3(tmpAmbient) - vec3(ambValue);
- * tmpAmbient = vec4(RenderSSAOEffect.valueFactor * vec3(ambValue) + RenderSSAOEffect.saturationFactor *(1.0 - ambFactor) * ambHueSat, ambAlpha);
- */
- tmpAmbient = vec4(mix(ssao_effect_mat * tmpAmbient.rgb, tmpAmbient.rgb, ambFactor), tmpAmbient.a);
-
- //haze color
- setAdditiveColor(
- vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow) + tmpAmbient)
- + (haze_horizon * haze_weight) * (sunlight*(1.-cloud_shadow) * temp2.x
- + tmpAmbient)));
-
- //brightness of surface both sunlight and ambient
- setSunlitColor(vec3(sunlight * .5));
- setAmblitColor(vec3(tmpAmbient * .25));
- setAdditiveColor(getAdditiveColor() * vec3(1.0 - temp1));
-}
-
-vec3 atmosLighting(vec3 light)
-{
- light *= getAtmosAttenuation().r;
- light += getAdditiveColor();
- return (2.0 * light);
-}
-
-vec3 atmosTransport(vec3 light) {
- light *= getAtmosAttenuation().r;
- light += getAdditiveColor() * 2.0;
- return light;
-}
-vec3 atmosGetDiffuseSunlightColor()
-{
- return getSunlitColor();
-}
-
-vec3 scaleDownLight(vec3 light)
-{
- return (light / vec3(scene_light_strength, scene_light_strength, scene_light_strength));
-}
-
-vec3 scaleUpLight(vec3 light)
-{
- return (light * vec3(scene_light_strength, scene_light_strength, scene_light_strength));
-}
-
-vec3 atmosAmbient(vec3 light)
-{
- return getAmblitColor() + (light * vec3(0.5f, 0.5f, 0.5f));
-}
-
-vec3 atmosAffectDirectionalLight(float lightIntensity)
-{
- return getSunlitColor() * vec3(lightIntensity, lightIntensity, lightIntensity);
-}
-
-vec3 scaleSoftClip(vec3 light)
-{
- //soft clip effect:
- vec3 zeroes = vec3(0.0f, 0.0f, 0.0f);
- vec3 ones = vec3(1.0f, 1.0f, 1.0f);
-
- light = ones - clamp(light, zeroes, ones);
- light = ones - pow(light, gamma.xxx);
-
- 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 fullbrightScaleSoftClip(vec3 light)
-{
- //soft clip effect:
- return light;
-}
-
-#else
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_data[3];
-#else
-#define frag_data gl_FragData
-#endif
-#endif
-
-uniform sampler2D diffuseMap;
-
-#if HAS_NORMAL_MAP
-uniform sampler2D bumpMap;
-#endif
-
-#if HAS_SPECULAR_MAP
-uniform sampler2D specularMap;
-
-VARYING vec2 vary_texcoord2;
-#endif
-
-uniform float env_intensity;
-uniform vec4 specular_color; // specular color RGB and specular exponent (glossiness) in alpha
-
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_MASK)
-uniform float minimum_alpha;
-#endif
-
-#if HAS_NORMAL_MAP
-VARYING vec3 vary_mat0;
-VARYING vec3 vary_mat1;
-VARYING vec3 vary_mat2;
-VARYING vec2 vary_texcoord1;
-#else
-VARYING vec3 vary_normal;
-#endif
-
-VARYING vec4 vertex_color;
-VARYING vec2 vary_texcoord0;
-
-vec2 encode_normal(vec3 n)
-{
- float f = sqrt(8 * n.z + 8);
- return n.xy / f + 0.5;
-}
-
-vec3 decode_normal (vec2 enc)
-{
- vec2 fenc = enc*4-2;
- float f = dot(fenc,fenc);
- float g = sqrt(1-f/4);
- vec3 n;
- n.xy = fenc*g;
- n.z = 1-f/2;
- return n;
-}
-
-void main()
-{
- vec4 diffcol = texture2D(diffuseMap, vary_texcoord0.xy);
- diffcol.rgb *= vertex_color.rgb;
-
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_MASK)
- if (diffcol.a < minimum_alpha)
- {
- discard;
- }
-#endif
-
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
- vec3 gamma_diff = diffcol.rgb;
- diffcol.rgb = srgb_to_linear(diffcol.rgb);
-#endif
-
-#if HAS_SPECULAR_MAP
- vec4 spec = texture2D(specularMap, vary_texcoord2.xy);
- spec.rgb *= specular_color.rgb;
-#else
- vec4 spec = vec4(specular_color.rgb, 1.0);
-#endif
-
-#if HAS_NORMAL_MAP
- vec4 norm = texture2D(bumpMap, vary_texcoord1.xy);
-
- norm.xyz = norm.xyz * 2 - 1;
-
- vec3 tnorm = vec3(dot(norm.xyz,vary_mat0),
- dot(norm.xyz,vary_mat1),
- dot(norm.xyz,vary_mat2));
-#else
- vec4 norm = vec4(0,0,0,1.0);
- vec3 tnorm = vary_normal;
-#endif
-
- norm.xyz = tnorm;
- norm.xyz = normalize(norm.xyz);
-
- vec2 abnormal = encode_normal(norm.xyz);
- norm.xyz = decode_normal(abnormal.xy);
-
- vec4 final_color = diffcol;
-
-#if (DIFFUSE_ALPHA_MODE != DIFFUSE_ALPHA_MODE_EMISSIVE)
- final_color.a = emissive_brightness;
-#else
- final_color.a = max(final_color.a, emissive_brightness);
-#endif
-
- vec4 final_specular = spec;
-#if HAS_SPECULAR_MAP
- vec4 final_normal = vec4(encode_normal(normalize(tnorm)), env_intensity * spec.a, 0.0);
- final_specular.a = specular_color.a * norm.a;
-#else
- vec4 final_normal = vec4(encode_normal(normalize(tnorm)), env_intensity, 0.0);
- final_specular.a = specular_color.a;
-#endif
-
-
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
- //forward rendering, output just lit RGBA
- vec3 pos = vary_position;
-
-#if HAS_SUN_SHADOW
- float shadow = 0.0;
-
- vec4 spos = vec4(pos,1.0);
-
- if (spos.z > -shadow_clip.w)
- {
- vec4 lpos;
-
- vec4 near_split = shadow_clip*-0.75;
- vec4 far_split = shadow_clip*-1.25;
- vec4 transition_domain = near_split-far_split;
- float weight = 0.0;
-
- if (spos.z < near_split.z)
- {
- lpos = shadow_matrix[3]*spos;
-
- float w = 1.0;
- w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
- shadow += pcfShadow(shadowMap3, lpos)*w;
- weight += w;
- shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
- }
-
- if (spos.z < near_split.y && spos.z > far_split.z)
- {
- lpos = shadow_matrix[2]*spos;
-
- float w = 1.0;
- w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
- w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
- shadow += pcfShadow(shadowMap2, lpos)*w;
- weight += w;
- }
-
- if (spos.z < near_split.x && spos.z > far_split.y)
- {
- lpos = shadow_matrix[1]*spos;
-
- float w = 1.0;
- w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
- w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
- shadow += pcfShadow(shadowMap1, lpos)*w;
- weight += w;
- }
-
- if (spos.z > far_split.x)
- {
- lpos = shadow_matrix[0]*spos;
-
- float w = 1.0;
- w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
-
- shadow += pcfShadow(shadowMap0, lpos)*w;
- weight += w;
- }
-
-
- shadow /= weight;
- }
- else
- {
- shadow = 1.0;
- }
-#else
- float shadow = 1.0;
-#endif
-
- spec = final_specular;
- vec4 diffuse = final_color;
- float envIntensity = final_normal.z;
-
- vec3 col = vec3(0.0f,0.0f,0.0f);
-
- float bloom = 0.0;
- calcAtmospherics(pos.xyz, 1.0);
-
- vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
-
- float da =dot(norm.xyz, sun_dir.xyz);
-
- float final_da = da;
- final_da = min(final_da, shadow);
- //final_da = max(final_da, diffuse.a);
- final_da = max(final_da, 0.0f);
- final_da = min(final_da, 1.0f);
- final_da = pow(final_da, 1.0/1.3);
-
- col.rgb = atmosAmbient(col);
-
- float ambient = min(abs(da), 1.0);
- ambient *= 0.5;
- ambient *= ambient;
- ambient = (1.0-ambient);
-
- col.rgb *= ambient;
-
- col.rgb = col.rgb + atmosAffectDirectionalLight(final_da);
-
- col.rgb *= gamma_diff.rgb;
-
-
- float glare = 0.0;
-
- if (spec.a > 0.0) // specular reflection
- {
- // the old infinite-sky shiny reflection
- //
-
- float sa = dot(refnormpersp, sun_dir.xyz);
- vec3 dumbshiny = vary_SunlitColor*shadow*(texture2D(lightFunc, vec2(sa, spec.a)).r);
-
- // add the two types of shiny together
- vec3 spec_contrib = dumbshiny * spec.rgb;
- bloom = dot(spec_contrib, spec_contrib) / 6;
-
- glare = max(spec_contrib.r, spec_contrib.g);
- glare = max(glare, spec_contrib.b);
-
- col += spec_contrib;
- }
-
-
- col = mix(col.rgb, diffcol.rgb, diffuse.a);
-
- if (envIntensity > 0.0)
- {
- //add environmentmap
- vec3 env_vec = env_mat * refnormpersp;
-
- vec3 refcol = textureCube(environmentMap, env_vec).rgb;
-
- col = mix(col.rgb, refcol,
- envIntensity);
-
- float cur_glare = max(refcol.r, refcol.g);
- cur_glare = max(cur_glare, refcol.b);
- cur_glare *= envIntensity*4.0;
- glare += cur_glare;
- }
-
- //col = mix(atmosLighting(col), fullbrightAtmosTransport(col), diffuse.a);
- //col = mix(scaleSoftClip(col), fullbrightScaleSoftClip(col), diffuse.a);
-
- col = atmosLighting(col);
- col = scaleSoftClip(col);
-
- //convert to linear space before adding local lights
- col = srgb_to_linear(col);
-
- vec3 npos = normalize(-pos.xyz);
-
- vec3 light = vec3(0,0,0);
-
- #define LIGHT_LOOP(i) light.rgb += calcPointLightOrSpotLight(light_diffuse[i].rgb, npos, diffuse.rgb, final_specular, pos.xyz, norm.xyz, light_position[i], light_direction[i].xyz, light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z, glare);
-
- LIGHT_LOOP(1)
- LIGHT_LOOP(2)
- LIGHT_LOOP(3)
- LIGHT_LOOP(4)
- LIGHT_LOOP(5)
- LIGHT_LOOP(6)
- LIGHT_LOOP(7)
-
- col.rgb += light.rgb;
-
- glare = min(glare, 1.0);
- float al = max(diffcol.a,glare)*vertex_color.a;
-
- //convert to gamma space for display on screen
- col.rgb = linear_to_srgb(col.rgb);
-
-#ifdef WATER_FOG
- vec4 temp = applyWaterFogDeferred(pos, vec4(col.rgb, al));
- col.rgb = temp.rgb;
- al = temp.a;
-#endif
-
- frag_color.rgb = col.rgb;
- frag_color.a = al;
-
-#else
- frag_data[0] = final_color;
- frag_data[1] = final_specular; // XYZ = Specular color. W = Specular exponent.
- frag_data[2] = final_normal; // XY = Normal. Z = Env. intensity.
-#endif
-}
-
+/**
+* @file materialF.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
+* $/LicenseInfo$
+*/
+
+/*[EXTRA_CODE_HERE]*/
+
+//class1/deferred/materialF.glsl
+
+// This shader is used for both writing opaque/masked content to the gbuffer and writing blended content to the framebuffer during the alpha pass.
+
+#define DIFFUSE_ALPHA_MODE_NONE 0
+#define DIFFUSE_ALPHA_MODE_BLEND 1
+#define DIFFUSE_ALPHA_MODE_MASK 2
+#define DIFFUSE_ALPHA_MODE_EMISSIVE 3
+
+uniform float emissive_brightness; // fullbright flag, 1.0 == fullbright, 0.0 otherwise
+uniform int sun_up_factor;
+
+#ifdef WATER_FOG
+vec4 applyWaterFogView(vec3 pos, vec4 color);
+#endif
+
+vec3 atmosFragLighting(vec3 l, vec3 additive, vec3 atten);
+vec3 scaleSoftClipFrag(vec3 l);
+
+vec3 fullbrightAtmosTransportFrag(vec3 light, vec3 additive, vec3 atten);
+vec3 fullbrightScaleSoftClip(vec3 light);
+
+void calcAtmosphericVars(vec3 inPositionEye, vec3 light_dir, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive, out vec3 atten, bool use_ao);
+
+vec3 srgb_to_linear(vec3 cs);
+vec3 linear_to_srgb(vec3 cs);
+
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
+
+#ifdef DEFINE_GL_FRAGCOLOR
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
+#endif
+
+#ifdef HAS_SUN_SHADOW
+float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen);
+#endif
+
+uniform samplerCube environmentMap;
+uniform sampler2D lightFunc;
+
+// Inputs
+uniform vec4 morphFactor;
+uniform vec3 camPosLocal;
+uniform mat3 env_mat;
+
+uniform vec3 sun_dir;
+uniform vec3 moon_dir;
+VARYING vec2 vary_fragcoord;
+
+VARYING vec3 vary_position;
+
+uniform mat4 proj_mat;
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+
+uniform vec4 light_position[8];
+uniform vec3 light_direction[8];
+uniform vec4 light_attenuation[8];
+uniform vec3 light_diffuse[8];
+
+float getAmbientClamp();
+
+vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 npos, vec3 diffuse, vec4 spec, vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight, inout float glare, float ambiance)
+{
+ vec3 col = vec3(0);
+
+ //get light vector
+ vec3 lv = lp.xyz - v;
+
+ //get distance
+ float dist = length(lv);
+ float da = 1.0;
+
+ dist /= la;
+
+ if (dist > 0.0 && la > 0.0)
+ {
+ //normalize light vector
+ lv = normalize(lv);
+
+ //distance attenuation
+ float dist_atten = clamp(1.0 - (dist - 1.0*(1.0 - fa)) / fa, 0.0, 1.0);
+ dist_atten *= dist_atten;
+ dist_atten *= 2.0f;
+
+ if (dist_atten <= 0.0)
+ {
+ return col;
+ }
+
+ // spotlight coefficient.
+ float spot = max(dot(-ln, lv), is_pointlight);
+ da *= spot*spot; // GL_SPOT_EXPONENT=2
+
+ //angular attenuation
+ da *= dot(n, lv);
+
+ float lit = 0.0f;
+
+ float amb_da = ambiance;
+ if (da >= 0)
+ {
+ lit = max(da * dist_atten, 0.0);
+ col = lit * light_col * diffuse;
+ amb_da += (da*0.5 + 0.5) * ambiance;
+ }
+ amb_da += (da*da*0.5 + 0.5) * ambiance;
+ amb_da *= dist_atten;
+ amb_da = min(amb_da, 1.0f - lit);
+
+ // SL-10969 need to see why these are blown out
+ //col.rgb += amb_da * light_col * diffuse;
+
+ if (spec.a > 0.0)
+ {
+ //vec3 ref = dot(pos+lv, norm);
+ vec3 h = normalize(lv + npos);
+ float nh = dot(n, h);
+ float nv = dot(n, npos);
+ float vh = dot(npos, h);
+ float sa = nh;
+ float fres = pow(1 - dot(h, npos), 5)*0.4 + 0.5;
+
+ float gtdenom = 2 * nh;
+ float gt = max(0, min(gtdenom * nv / vh, gtdenom * da / vh));
+
+ if (nh > 0.0)
+ {
+ float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt / (nh*da);
+ vec3 speccol = lit*scol*light_col.rgb*spec.rgb;
+ speccol = clamp(speccol, vec3(0), vec3(1));
+ col += speccol;
+
+ float cur_glare = max(speccol.r, speccol.g);
+ cur_glare = max(cur_glare, speccol.b);
+ glare = max(glare, speccol.r);
+ glare += max(cur_glare, 0.0);
+ }
+ }
+ }
+
+ return max(col, vec3(0.0, 0.0, 0.0));
+}
+
+#else
+#ifdef DEFINE_GL_FRAGCOLOR
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
+#endif
+#endif
+
+uniform sampler2D diffuseMap; //always in sRGB space
+
+#ifdef HAS_NORMAL_MAP
+uniform sampler2D bumpMap;
+#endif
+
+#ifdef HAS_SPECULAR_MAP
+uniform sampler2D specularMap;
+
+VARYING vec2 vary_texcoord2;
+#endif
+
+uniform float env_intensity;
+uniform vec4 specular_color; // specular color RGB and specular exponent (glossiness) in alpha
+
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_MASK)
+uniform float minimum_alpha;
+#endif
+
+#ifdef HAS_NORMAL_MAP
+VARYING vec3 vary_mat0;
+VARYING vec3 vary_mat1;
+VARYING vec3 vary_mat2;
+VARYING vec2 vary_texcoord1;
+#else
+VARYING vec3 vary_normal;
+#endif
+
+VARYING vec4 vertex_color;
+VARYING vec2 vary_texcoord0;
+
+vec2 encode_normal(vec3 n);
+
+void main()
+{
+ vec2 pos_screen = vary_texcoord0.xy;
+
+ vec4 diffcol = texture2D(diffuseMap, vary_texcoord0.xy);
+ diffcol.rgb *= vertex_color.rgb;
+
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_MASK)
+
+ // Comparing floats cast from 8-bit values, produces acne right at the 8-bit transition points
+ float bias = 0.001953125; // 1/512, or half an 8-bit quantization
+ if (diffcol.a < minimum_alpha-bias)
+ {
+ discard;
+ }
+#endif
+
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
+ vec3 gamma_diff = diffcol.rgb;
+ diffcol.rgb = srgb_to_linear(diffcol.rgb);
+#endif
+
+#ifdef HAS_SPECULAR_MAP
+ vec4 spec = texture2D(specularMap, vary_texcoord2.xy);
+ spec.rgb *= specular_color.rgb;
+#else
+ vec4 spec = vec4(specular_color.rgb, 1.0);
+#endif
+
+#ifdef HAS_NORMAL_MAP
+ vec4 norm = texture2D(bumpMap, vary_texcoord1.xy);
+
+ norm.xyz = norm.xyz * 2 - 1;
+
+ vec3 tnorm = vec3(dot(norm.xyz,vary_mat0),
+ dot(norm.xyz,vary_mat1),
+ dot(norm.xyz,vary_mat2));
+#else
+ vec4 norm = vec4(0,0,0,1.0);
+ vec3 tnorm = vary_normal;
+#endif
+
+ norm.xyz = normalize(tnorm.xyz);
+
+ vec2 abnormal = encode_normal(norm.xyz);
+
+ vec4 final_color = diffcol;
+
+#if (DIFFUSE_ALPHA_MODE != DIFFUSE_ALPHA_MODE_EMISSIVE)
+ final_color.a = emissive_brightness;
+#else
+ final_color.a = max(final_color.a, emissive_brightness);
+#endif
+
+ vec4 final_specular = spec;
+
+#ifdef HAS_SPECULAR_MAP
+ vec4 final_normal = vec4(encode_normal(normalize(tnorm)), env_intensity * spec.a, 0.0);
+ final_specular.a = specular_color.a * norm.a;
+#else
+ vec4 final_normal = vec4(encode_normal(normalize(tnorm)), env_intensity, 0.0);
+ final_specular.a = specular_color.a;
+#endif
+
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
+
+ //forward rendering, output just lit sRGBA
+ vec3 pos = vary_position;
+
+ float shadow = 1.0f;
+
+#ifdef HAS_SUN_SHADOW
+ shadow = sampleDirectionalShadow(pos.xyz, norm.xyz, pos_screen);
+#endif
+
+ spec = final_specular;
+ vec4 diffuse = final_color;
+ float envIntensity = final_normal.z;
+
+ vec3 color = vec3(0,0,0);
+
+ vec3 light_dir = (sun_up_factor == 1) ? sun_dir : moon_dir;
+
+ float bloom = 0.0;
+ vec3 sunlit;
+ vec3 amblit;
+ vec3 additive;
+ vec3 atten;
+
+ calcAtmosphericVars(pos.xyz, light_dir, 1.0, sunlit, amblit, additive, atten, false);
+
+ // This call breaks the Mac GLSL compiler/linker for unknown reasons (17Mar2020)
+ // The call is either a no-op or a pure (pow) gamma adjustment, depending on GPU level
+ // TODO: determine if we want to re-apply the gamma adjustment, and if so understand & fix Mac breakage
+ //color = fullbrightScaleSoftClip(color);
+
+ vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
+
+ //we're in sRGB space, so gamma correct this dot product so
+ // lighting from the sun stays sharp
+ float da = clamp(dot(normalize(norm.xyz), light_dir.xyz), 0.0, 1.0);
+ da = pow(da, 1.0 / 1.3);
+
+ color = amblit;
+
+ //darken ambient for normals perpendicular to light vector so surfaces in shadow
+ // and facing away from light still have some definition to them.
+ // do NOT gamma correct this dot product so ambient lighting stays soft
+ float ambient = min(abs(dot(norm.xyz, sun_dir.xyz)), 1.0);
+ ambient *= 0.5;
+ ambient *= ambient;
+ ambient = (1.0 - ambient);
+
+ vec3 sun_contrib = min(da, shadow) * sunlit;
+
+ color *= ambient;
+
+ color += sun_contrib;
+
+ color *= gamma_diff.rgb;
+
+ float glare = 0.0;
+
+ if (spec.a > 0.0) // specular reflection
+ {
+#if 1 //EEP
+
+ vec3 npos = -normalize(pos.xyz);
+
+ //vec3 ref = dot(pos+lv, norm);
+ vec3 h = normalize(light_dir.xyz + npos);
+ float nh = dot(norm.xyz, h);
+ float nv = dot(norm.xyz, npos);
+ float vh = dot(npos, h);
+ float sa = nh;
+ float fres = pow(1 - dot(h, npos), 5)*0.4 + 0.5;
+
+ float gtdenom = 2 * nh;
+ float gt = max(0, min(gtdenom * nv / vh, gtdenom * da / vh));
+
+ if (nh > 0.0)
+ {
+ float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt / (nh*da);
+ vec3 sp = sun_contrib*scol / 6.0f;
+ sp = clamp(sp, vec3(0), vec3(1));
+ bloom = dot(sp, sp) / 4.0;
+ color += sp * spec.rgb;
+ }
+#else // PRODUCTION
+ float sa = dot(refnormpersp, sun_dir.xyz);
+ vec3 dumbshiny = sunlit*shadow*(texture2D(lightFunc, vec2(sa, spec.a)).r);
+
+ // add the two types of shiny together
+ vec3 spec_contrib = dumbshiny * spec.rgb;
+ bloom = dot(spec_contrib, spec_contrib) / 6;
+
+ glare = max(spec_contrib.r, spec_contrib.g);
+ glare = max(glare, spec_contrib.b);
+
+ color += spec_contrib;
+#endif
+ }
+
+ color = mix(color.rgb, diffcol.rgb, diffuse.a);
+
+ if (envIntensity > 0.0)
+ {
+ //add environmentmap
+ vec3 env_vec = env_mat * refnormpersp;
+
+ vec3 reflected_color = textureCube(environmentMap, env_vec).rgb;
+
+ color = mix(color, reflected_color, envIntensity);
+
+ float cur_glare = max(reflected_color.r, reflected_color.g);
+ cur_glare = max(cur_glare, reflected_color.b);
+ cur_glare *= envIntensity*4.0;
+ glare += cur_glare;
+ }
+
+ color = atmosFragLighting(color, additive, atten);
+ color = scaleSoftClipFrag(color);
+
+ //convert to linear before adding local lights
+ color = srgb_to_linear(color);
+
+ vec3 npos = normalize(-pos.xyz);
+
+ vec3 light = vec3(0, 0, 0);
+
+#define LIGHT_LOOP(i) light.rgb += calcPointLightOrSpotLight(light_diffuse[i].rgb, npos, diffuse.rgb, final_specular, pos.xyz, norm.xyz, light_position[i], light_direction[i].xyz, light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z, glare, light_attenuation[i].w );
+
+ LIGHT_LOOP(1)
+ LIGHT_LOOP(2)
+ LIGHT_LOOP(3)
+ LIGHT_LOOP(4)
+ LIGHT_LOOP(5)
+ LIGHT_LOOP(6)
+ LIGHT_LOOP(7)
+
+ color += light;
+
+ glare = min(glare, 1.0);
+ float al = max(diffcol.a, glare)*vertex_color.a;
+
+ //convert to srgb as this color is being written post gamma correction
+ color = linear_to_srgb(color);
+
+#ifdef WATER_FOG
+ vec4 temp = applyWaterFogView(pos, vec4(color, al));
+ color = temp.rgb;
+ al = temp.a;
+#endif
+
+ frag_color = vec4(color, al);
+
+#else // mode is not DIFFUSE_ALPHA_MODE_BLEND, encode to gbuffer
+
+ // deferred path
+ frag_data[0] = final_color; //gbuffer is sRGB
+ frag_data[1] = final_specular; // XYZ = Specular color. W = Specular exponent.
+ frag_data[2] = final_normal; // XY = Normal. Z = Env. intensity.
+#endif
+}
+
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