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+/**
+ * @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;
+
+#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];
+
+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 = dot(lv,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 dist2 = d/la;
+ float dist_atten = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
+
+ // 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;
+}
+
+vec3 getPositionEye()
+{
+ return vary_PositionEye;
+}
+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(pow(vec3(sunlight * .5), vec3(2.2)) * 2.2);
+ setAmblitColor(pow(vec3(tmpAmbient * .25), vec3(2.2)) * 2.2);
+ setAdditiveColor(pow(getAdditiveColor() * vec3(1.0 - temp1), vec3(2.2)) * 2.2);
+}
+
+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;
+
+#ifdef SINGLE_FP_ONLY
+vec2 encode_normal(vec3 n)
+{
+ vec2 sn;
+ sn.xy = (n.xy * vec2(0.5f,0.5f)) + vec2(0.5f,0.5f);
+ return sn;
+}
+
+vec3 decode_normal (vec2 enc)
+{
+ vec3 n;
+ n.xy = (enc.xy * vec2(2.0f,2.0f)) - vec2(1.0f,1.0f);
+ n.z = sqrt(1.0f - dot(n.xy,n.xy));
+ return n;
+}
+#else
+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;
+}
+#endif
+
+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 old_diffcol = diffcol.rgb;
+ diffcol.rgb = pow(diffcol.rgb, vec3(2.2));
+#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);
+
+ 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);
+
+ col.rgb = atmosAmbient(col);
+
+ float ambient = min(abs(dot(norm.xyz, sun_dir.xyz)), 1.0);
+ ambient *= 0.5;
+ ambient *= ambient;
+ ambient = (1.0-ambient);
+
+ col.rgb *= ambient;
+
+ col.rgb = col.rgb + atmosAffectDirectionalLight(final_da * 2.6);
+ col.rgb *= diffuse.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, old_diffcol.rgb, diffuse.a);
+
+ if (envIntensity > 0.0)
+ {
+ //add environmentmap
+ vec3 env_vec = env_mat * refnormpersp;
+ float exponent = mix(2.2, 1.0, diffuse.a);
+
+ vec3 refcol = pow(textureCube(environmentMap, env_vec).rgb, vec3(exponent))*exponent;
+
+ 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;
+ }
+
+ float exponent = mix(1.0, 2.2, diffuse.a);
+ col = pow(col, vec3(exponent));
+
+
+ col = mix(atmosLighting(col), fullbrightAtmosTransport(col), diffuse.a);
+ col = mix(scaleSoftClip(col), fullbrightScaleSoftClip(col), diffuse.a);
+
+
+ vec3 npos = normalize(-pos.xyz);
+
+ #define LIGHT_LOOP(i) col.rgb = col.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 = pow(col.rgb, vec3(1.0/2.2));
+
+ frag_color.rgb = col.rgb;
+ glare = min(glare, 1.0);
+ frag_color.a = max(diffcol.a,glare)*vertex_color.a;
+
+#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
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 08:48:16 +0000