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-rw-r--r--indra/newview/app_settings/shaders/class1/deferred/materialF.glsl882
1 files changed, 443 insertions, 439 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
index 0afd1a9672..80d19102b6 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
@@ -1,439 +1,443 @@
-/**
-* @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
-}
-
+/**
+* @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
+ {
+ /* // Reverting this specular calculation to previous 'dumbshiny' version - DJH 6/17/2020
+ // Preserving the refactored version as a comment for potential reconsideration,
+ // overriding the general rule to avoid pollutiong the source with commented code.
+ //
+ // If you're reading this in 2021+, feel free to obliterate.
+
+ 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;
+ }
+ */
+
+ 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;
+ }
+
+ 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
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-20 12:39:19 +0000