Added clamping to specular term.

This is necessary for OpenGL where pow(0,0) is undefined and apparently can be negative, leading to negative specular light (in DirectX you just get zero).

build/custom/ThreeExtras.js

@@ -25,7 +25,7 @@ if(THREE.WebGLRenderer)THREE.ShaderUtils={lib:{fresnel:{uniforms:{mRefractionRat
 vertexShader:"uniform float mRefractionRatio;\nuniform float mFresnelBias;\nuniform float mFresnelScale;\nuniform float mFresnelPower;\nvarying vec3 vReflect;\nvarying vec3 vRefract[3];\nvarying float vReflectionFactor;\nvoid main() {\nvec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );\nvec4 mPosition = objectMatrix * vec4( position, 1.0 );\nvec3 nWorld = normalize ( mat3( objectMatrix[0].xyz, objectMatrix[1].xyz, objectMatrix[2].xyz ) * normal );\nvec3 I = mPosition.xyz - cameraPosition;\nvReflect = reflect( I, nWorld );\nvRefract[0] = refract( normalize( I ), nWorld, mRefractionRatio );\nvRefract[1] = refract( normalize( I ), nWorld, mRefractionRatio * 0.99 );\nvRefract[2] = refract( normalize( I ), nWorld, mRefractionRatio * 0.98 );\nvReflectionFactor = mFresnelBias + mFresnelScale * pow( 1.0 + dot( normalize( I ), nWorld ), mFresnelPower );\ngl_Position = projectionMatrix * mvPosition;\n}"},
 normal:{uniforms:THREE.UniformsUtils.merge([THREE.UniformsLib.fog,THREE.UniformsLib.lights,THREE.UniformsLib.shadowmap,{enableAO:{type:"i",value:0},enableDiffuse:{type:"i",value:0},enableSpecular:{type:"i",value:0},enableReflection:{type:"i",value:0},tDiffuse:{type:"t",value:0,texture:null},tCube:{type:"t",value:1,texture:null},tNormal:{type:"t",value:2,texture:null},tSpecular:{type:"t",value:3,texture:null},tAO:{type:"t",value:4,texture:null},tDisplacement:{type:"t",value:5,texture:null},uNormalScale:{type:"f",
 value:1},uDisplacementBias:{type:"f",value:0},uDisplacementScale:{type:"f",value:1},uDiffuseColor:{type:"c",value:new THREE.Color(15658734)},uSpecularColor:{type:"c",value:new THREE.Color(1118481)},uAmbientColor:{type:"c",value:new THREE.Color(328965)},uShininess:{type:"f",value:30},uOpacity:{type:"f",value:1},uReflectivity:{type:"f",value:0.5},uOffset:{type:"v2",value:new THREE.Vector2(0,0)},uRepeat:{type:"v2",value:new THREE.Vector2(1,1)},wrapRGB:{type:"v3",value:new THREE.Vector3(1,1,1)}}]),fragmentShader:["uniform vec3 uAmbientColor;\nuniform vec3 uDiffuseColor;\nuniform vec3 uSpecularColor;\nuniform float uShininess;\nuniform float uOpacity;\nuniform bool enableDiffuse;\nuniform bool enableSpecular;\nuniform bool enableAO;\nuniform bool enableReflection;\nuniform sampler2D tDiffuse;\nuniform sampler2D tNormal;\nuniform sampler2D tSpecular;\nuniform sampler2D tAO;\nuniform samplerCube tCube;\nuniform float uNormalScale;\nuniform float uReflectivity;\nvarying vec3 vTangent;\nvarying vec3 vBinormal;\nvarying vec3 vNormal;\nvarying vec2 vUv;\nuniform vec3 ambientLightColor;\n#if MAX_DIR_LIGHTS > 0\nuniform vec3 directionalLightColor[ MAX_DIR_LIGHTS ];\nuniform vec3 directionalLightDirection[ MAX_DIR_LIGHTS ];\n#endif\n#if MAX_POINT_LIGHTS > 0\nuniform vec3 pointLightColor[ MAX_POINT_LIGHTS ];\nvarying vec4 vPointLight[ MAX_POINT_LIGHTS ];\n#endif\n#ifdef WRAP_AROUND\nuniform vec3 wrapRGB;\n#endif\nvarying vec3 vViewPosition;",
-THREE.ShaderChunk.shadowmap_pars_fragment,THREE.ShaderChunk.fog_pars_fragment,"void main() {\ngl_FragColor = vec4( vec3( 1.0 ), uOpacity );\nvec3 specularTex = vec3( 1.0 );\nvec3 normalTex = texture2D( tNormal, vUv ).xyz * 2.0 - 1.0;\nnormalTex.xy *= uNormalScale;\nnormalTex = normalize( normalTex );\nif( enableDiffuse ) {\n#ifdef GAMMA_INPUT\nvec4 texelColor = texture2D( tDiffuse, vUv );\ntexelColor.xyz *= texelColor.xyz;\ngl_FragColor = gl_FragColor * texelColor;\n#else\ngl_FragColor = gl_FragColor * texture2D( tDiffuse, vUv );\n#endif\n}\nif( enableAO ) {\n#ifdef GAMMA_INPUT\nvec4 aoColor = texture2D( tAO, vUv );\naoColor.xyz *= aoColor.xyz;\ngl_FragColor.xyz = gl_FragColor.xyz * aoColor.xyz;\n#else\ngl_FragColor.xyz = gl_FragColor.xyz * texture2D( tAO, vUv ).xyz;\n#endif\n}\nif( enableSpecular )\nspecularTex = texture2D( tSpecular, vUv ).xyz;\nmat3 tsb = mat3( normalize( vTangent ), normalize( vBinormal ), normalize( vNormal ) );\nvec3 finalNormal = tsb * normalTex;\nvec3 normal = normalize( finalNormal );\nvec3 viewPosition = normalize( vViewPosition );\n#if MAX_POINT_LIGHTS > 0\nvec3 pointDiffuse = vec3( 0.0 );\nvec3 pointSpecular = vec3( 0.0 );\nfor ( int i = 0; i < MAX_POINT_LIGHTS; i ++ ) {\nvec3 pointVector = normalize( vPointLight[ i ].xyz );\nfloat pointDistance = vPointLight[ i ].w;\n#ifdef WRAP_AROUND\nfloat pointDiffuseWeightFull = max( dot( normal, pointVector ), 0.0 );\nfloat pointDiffuseWeightHalf = max( 0.5 * dot( normal, pointVector ) + 0.5, 0.0 );\nvec3 pointDiffuseWeight = mix( vec3 ( pointDiffuseWeightFull ), vec3( pointDiffuseWeightHalf ), wrapRGB );\n#else\nfloat pointDiffuseWeight = max( dot( normal, pointVector ), 0.0 );\n#endif\npointDiffuse += pointDistance * pointLightColor[ i ] * uDiffuseColor * pointDiffuseWeight;\nvec3 pointHalfVector = normalize( vPointLight[ i ].xyz + viewPosition );\nfloat pointDotNormalHalf = max( dot( normal, pointHalfVector ), 0.0 );\nfloat pointSpecularWeight = specularTex.r * pow( pointDotNormalHalf, uShininess );\npointSpecular += pointDistance * pointLightColor[ i ] * uSpecularColor * pointSpecularWeight * pointDiffuseWeight;\n}\n#endif\n#if MAX_DIR_LIGHTS > 0\nvec3 dirDiffuse = vec3( 0.0 );\nvec3 dirSpecular = vec3( 0.0 );\nfor( int i = 0; i < MAX_DIR_LIGHTS; i++ ) {\nvec4 lDirection = viewMatrix * vec4( directionalLightDirection[ i ], 0.0 );\nvec3 dirVector = normalize( lDirection.xyz );\n#ifdef WRAP_AROUND\nfloat directionalLightWeightingFull = max( dot( normal, dirVector ), 0.0 );\nfloat directionalLightWeightingHalf = max( 0.5 * dot( normal, dirVector ) + 0.5, 0.0 );\nvec3 dirDiffuseWeight = mix( vec3( directionalLightWeightingFull ), vec3( directionalLightWeightingHalf ), wrapRGB );\n#else\nfloat dirDiffuseWeight = max( dot( normal, dirVector ), 0.0 );\n#endif\ndirDiffuse += directionalLightColor[ i ] * uDiffuseColor * dirDiffuseWeight;\nvec3 dirHalfVector = normalize( lDirection.xyz + viewPosition );\nfloat dirDotNormalHalf = max( dot( normal, dirHalfVector ), 0.0 );\nfloat dirSpecularWeight = specularTex.r * pow( dirDotNormalHalf, uShininess );\ndirSpecular += directionalLightColor[ i ] * uSpecularColor * dirSpecularWeight * dirDiffuseWeight;\n}\n#endif\nvec3 totalDiffuse = vec3( 0.0 );\nvec3 totalSpecular = vec3( 0.0 );\n#if MAX_DIR_LIGHTS > 0\ntotalDiffuse += dirDiffuse;\ntotalSpecular += dirSpecular;\n#endif\n#if MAX_POINT_LIGHTS > 0\ntotalDiffuse += pointDiffuse;\ntotalSpecular += pointSpecular;\n#endif\ngl_FragColor.xyz = gl_FragColor.xyz * ( totalDiffuse + ambientLightColor * uAmbientColor) + totalSpecular;\nif ( enableReflection ) {\nvec3 wPos = cameraPosition - vViewPosition;\nvec3 vReflect = reflect( normalize( wPos ), normal );\nvec4 cubeColor = textureCube( tCube, vec3( -vReflect.x, vReflect.yz ) );\n#ifdef GAMMA_INPUT\ncubeColor.xyz *= cubeColor.xyz;\n#endif\ngl_FragColor.xyz = mix( gl_FragColor.xyz, cubeColor.xyz, specularTex.r * uReflectivity );\n}",
+THREE.ShaderChunk.shadowmap_pars_fragment,THREE.ShaderChunk.fog_pars_fragment,"void main() {\ngl_FragColor = vec4( vec3( 1.0 ), uOpacity );\nvec3 specularTex = vec3( 1.0 );\nvec3 normalTex = texture2D( tNormal, vUv ).xyz * 2.0 - 1.0;\nnormalTex.xy *= uNormalScale;\nnormalTex = normalize( normalTex );\nif( enableDiffuse ) {\n#ifdef GAMMA_INPUT\nvec4 texelColor = texture2D( tDiffuse, vUv );\ntexelColor.xyz *= texelColor.xyz;\ngl_FragColor = gl_FragColor * texelColor;\n#else\ngl_FragColor = gl_FragColor * texture2D( tDiffuse, vUv );\n#endif\n}\nif( enableAO ) {\n#ifdef GAMMA_INPUT\nvec4 aoColor = texture2D( tAO, vUv );\naoColor.xyz *= aoColor.xyz;\ngl_FragColor.xyz = gl_FragColor.xyz * aoColor.xyz;\n#else\ngl_FragColor.xyz = gl_FragColor.xyz * texture2D( tAO, vUv ).xyz;\n#endif\n}\nif( enableSpecular )\nspecularTex = texture2D( tSpecular, vUv ).xyz;\nmat3 tsb = mat3( normalize( vTangent ), normalize( vBinormal ), normalize( vNormal ) );\nvec3 finalNormal = tsb * normalTex;\nvec3 normal = normalize( finalNormal );\nvec3 viewPosition = normalize( vViewPosition );\n#if MAX_POINT_LIGHTS > 0\nvec3 pointDiffuse = vec3( 0.0 );\nvec3 pointSpecular = vec3( 0.0 );\nfor ( int i = 0; i < MAX_POINT_LIGHTS; i ++ ) {\nvec3 pointVector = normalize( vPointLight[ i ].xyz );\nfloat pointDistance = vPointLight[ i ].w;\n#ifdef WRAP_AROUND\nfloat pointDiffuseWeightFull = max( dot( normal, pointVector ), 0.0 );\nfloat pointDiffuseWeightHalf = max( 0.5 * dot( normal, pointVector ) + 0.5, 0.0 );\nvec3 pointDiffuseWeight = mix( vec3 ( pointDiffuseWeightFull ), vec3( pointDiffuseWeightHalf ), wrapRGB );\n#else\nfloat pointDiffuseWeight = max( dot( normal, pointVector ), 0.0 );\n#endif\npointDiffuse += pointDistance * pointLightColor[ i ] * uDiffuseColor * pointDiffuseWeight;\nvec3 pointHalfVector = normalize( vPointLight[ i ].xyz + viewPosition );\nfloat pointDotNormalHalf = max( dot( normal, pointHalfVector ), 0.0 );\nfloat pointSpecularWeight = specularTex.r * max( pow( pointDotNormalHalf, uShininess ), 0.0 );\npointSpecular += pointDistance * pointLightColor[ i ] * uSpecularColor * pointSpecularWeight * pointDiffuseWeight;\n}\n#endif\n#if MAX_DIR_LIGHTS > 0\nvec3 dirDiffuse = vec3( 0.0 );\nvec3 dirSpecular = vec3( 0.0 );\nfor( int i = 0; i < MAX_DIR_LIGHTS; i++ ) {\nvec4 lDirection = viewMatrix * vec4( directionalLightDirection[ i ], 0.0 );\nvec3 dirVector = normalize( lDirection.xyz );\n#ifdef WRAP_AROUND\nfloat directionalLightWeightingFull = max( dot( normal, dirVector ), 0.0 );\nfloat directionalLightWeightingHalf = max( 0.5 * dot( normal, dirVector ) + 0.5, 0.0 );\nvec3 dirDiffuseWeight = mix( vec3( directionalLightWeightingFull ), vec3( directionalLightWeightingHalf ), wrapRGB );\n#else\nfloat dirDiffuseWeight = max( dot( normal, dirVector ), 0.0 );\n#endif\ndirDiffuse += directionalLightColor[ i ] * uDiffuseColor * dirDiffuseWeight;\nvec3 dirHalfVector = normalize( lDirection.xyz + viewPosition );\nfloat dirDotNormalHalf = max( dot( normal, dirHalfVector ), 0.0 );\nfloat dirSpecularWeight = specularTex.r * max( pow( dirDotNormalHalf, uShininess ), 0.0 );\ndirSpecular += directionalLightColor[ i ] * uSpecularColor * dirSpecularWeight * dirDiffuseWeight;\n}\n#endif\nvec3 totalDiffuse = vec3( 0.0 );\nvec3 totalSpecular = vec3( 0.0 );\n#if MAX_DIR_LIGHTS > 0\ntotalDiffuse += dirDiffuse;\ntotalSpecular += dirSpecular;\n#endif\n#if MAX_POINT_LIGHTS > 0\ntotalDiffuse += pointDiffuse;\ntotalSpecular += pointSpecular;\n#endif\ngl_FragColor.xyz = gl_FragColor.xyz * ( totalDiffuse + ambientLightColor * uAmbientColor) + totalSpecular;\nif ( enableReflection ) {\nvec3 wPos = cameraPosition - vViewPosition;\nvec3 vReflect = reflect( normalize( wPos ), normal );\nvec4 cubeColor = textureCube( tCube, vec3( -vReflect.x, vReflect.yz ) );\n#ifdef GAMMA_INPUT\ncubeColor.xyz *= cubeColor.xyz;\n#endif\ngl_FragColor.xyz = mix( gl_FragColor.xyz, cubeColor.xyz, specularTex.r * uReflectivity );\n}",
 THREE.ShaderChunk.shadowmap_fragment,THREE.ShaderChunk.linear_to_gamma_fragment,THREE.ShaderChunk.fog_fragment,"}"].join("\n"),vertexShader:["attribute vec4 tangent;\nuniform vec2 uOffset;\nuniform vec2 uRepeat;\n#ifdef VERTEX_TEXTURES\nuniform sampler2D tDisplacement;\nuniform float uDisplacementScale;\nuniform float uDisplacementBias;\n#endif\nvarying vec3 vTangent;\nvarying vec3 vBinormal;\nvarying vec3 vNormal;\nvarying vec2 vUv;\n#if MAX_POINT_LIGHTS > 0\nuniform vec3 pointLightPosition[ MAX_POINT_LIGHTS ];\nuniform float pointLightDistance[ MAX_POINT_LIGHTS ];\nvarying vec4 vPointLight[ MAX_POINT_LIGHTS ];\n#endif\nvarying vec3 vViewPosition;",
 THREE.ShaderChunk.shadowmap_pars_vertex,"void main() {\nvec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );\nvViewPosition = -mvPosition.xyz;\nvNormal = normalMatrix * normal;\nvTangent = normalMatrix * tangent.xyz;\nvBinormal = cross( vNormal, vTangent ) * tangent.w;\nvUv = uv * uRepeat + uOffset;\n#if MAX_POINT_LIGHTS > 0\nfor( int i = 0; i < MAX_POINT_LIGHTS; i++ ) {\nvec4 lPosition = viewMatrix * vec4( pointLightPosition[ i ], 1.0 );\nvec3 lVector = lPosition.xyz - mvPosition.xyz;\nfloat lDistance = 1.0;\nif ( pointLightDistance[ i ] > 0.0 )\nlDistance = 1.0 - min( ( length( lVector ) / pointLightDistance[ i ] ), 1.0 );\nlVector = normalize( lVector );\nvPointLight[ i ] = vec4( lVector, lDistance );\n}\n#endif\n#ifdef VERTEX_TEXTURES\nvec3 dv = texture2D( tDisplacement, uv ).xyz;\nfloat df = uDisplacementScale * dv.x + uDisplacementBias;\nvec4 displacedPosition = vec4( normalize( vNormal.xyz ) * df, 0.0 ) + mvPosition;\ngl_Position = projectionMatrix * displacedPosition;\n#else\ngl_Position = projectionMatrix * mvPosition;\n#endif",
 THREE.ShaderChunk.shadowmap_vertex,"}"].join("\n")},cube:{uniforms:{tCube:{type:"t",value:1,texture:null},tFlip:{type:"f",value:-1}},vertexShader:"varying vec3 vViewPosition;\nvoid main() {\nvec4 mPosition = objectMatrix * vec4( position, 1.0 );\nvViewPosition = cameraPosition - mPosition.xyz;\ngl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}",fragmentShader:"uniform samplerCube tCube;\nuniform float tFlip;\nvarying vec3 vViewPosition;\nvoid main() {\nvec3 wPos = cameraPosition - vViewPosition;\ngl_FragColor = textureCube( tCube, vec3( tFlip * wPos.x, wPos.yz ) );\n}"}}};

build/custom/ThreeWebGL.js

@@ -144,7 +144,7 @@ lightmap_pars_fragment:"#ifdef USE_LIGHTMAP\nvarying vec2 vUv2;\nuniform sampler
 lights_lambert_vertex:"vLightWeighting = vec3( 0.0 );\n#if MAX_DIR_LIGHTS > 0\nfor( int i = 0; i < MAX_DIR_LIGHTS; i ++ ) {\nvec4 lDirection = viewMatrix * vec4( directionalLightDirection[ i ], 0.0 );\n#ifdef WRAP_AROUND\nfloat directionalLightWeightingFull = max( dot( transformedNormal, normalize( lDirection.xyz ) ), 0.0 );\nfloat directionalLightWeightingHalf = max( 0.5 * dot( transformedNormal, normalize( lDirection.xyz ) ) + 0.5, 0.0 );\nvec3 directionalLightWeighting = mix( vec3( directionalLightWeightingFull ), vec3( directionalLightWeightingHalf ), wrapRGB );\n#else\nfloat directionalLightWeighting = max( dot( transformedNormal, normalize( lDirection.xyz ) ), 0.0 );\n#endif\nvLightWeighting += directionalLightColor[ i ] * directionalLightWeighting;\n}\n#endif\n#if MAX_POINT_LIGHTS > 0\nfor( int i = 0; i < MAX_POINT_LIGHTS; i ++ ) {\nvec4 lPosition = viewMatrix * vec4( pointLightPosition[ i ], 1.0 );\nvec3 lVector = lPosition.xyz - mvPosition.xyz;\nfloat lDistance = 1.0;\nif ( pointLightDistance[ i ] > 0.0 )\nlDistance = 1.0 - min( ( length( lVector ) / pointLightDistance[ i ] ), 1.0 );\nlVector = normalize( lVector );\n#ifdef WRAP_AROUND\nfloat pointLightWeightingFull = max( dot( transformedNormal, lVector ), 0.0 );\nfloat pointLightWeightingHalf = max( 0.5 * dot( transformedNormal, lVector ) + 0.5, 0.0 );\nvec3 pointLightWeighting = mix( vec3 ( pointLightWeightingFull ), vec3( pointLightWeightingHalf ), wrapRGB );\n#else\nfloat pointLightWeighting = max( dot( transformedNormal, lVector ), 0.0 );\n#endif\nvLightWeighting += pointLightColor[ i ] * pointLightWeighting * lDistance;\n}\n#endif\nvLightWeighting = vLightWeighting * diffuse + ambient * ambientLightColor;",
 lights_phong_pars_vertex:"#if MAX_POINT_LIGHTS > 0\n#ifndef PHONG_PER_PIXEL\nuniform vec3 pointLightPosition[ MAX_POINT_LIGHTS ];\nuniform float pointLightDistance[ MAX_POINT_LIGHTS ];\nvarying vec4 vPointLight[ MAX_POINT_LIGHTS ];\n#endif\n#endif",lights_phong_vertex:"#if MAX_POINT_LIGHTS > 0\n#ifndef PHONG_PER_PIXEL\nfor( int i = 0; i < MAX_POINT_LIGHTS; i ++ ) {\nvec4 lPosition = viewMatrix * vec4( pointLightPosition[ i ], 1.0 );\nvec3 lVector = lPosition.xyz - mvPosition.xyz;\nfloat lDistance = 1.0;\nif ( pointLightDistance[ i ] > 0.0 )\nlDistance = 1.0 - min( ( length( lVector ) / pointLightDistance[ i ] ), 1.0 );\nlVector = normalize( lVector );\nvPointLight[ i ] = vec4( lVector, lDistance );\n}\n#endif\n#endif",
 lights_phong_pars_fragment:"uniform vec3 ambientLightColor;\n#if MAX_DIR_LIGHTS > 0\nuniform vec3 directionalLightColor[ MAX_DIR_LIGHTS ];\nuniform vec3 directionalLightDirection[ MAX_DIR_LIGHTS ];\n#endif\n#if MAX_POINT_LIGHTS > 0\nuniform vec3 pointLightColor[ MAX_POINT_LIGHTS ];\n#ifdef PHONG_PER_PIXEL\nuniform vec3 pointLightPosition[ MAX_POINT_LIGHTS ];\nuniform float pointLightDistance[ MAX_POINT_LIGHTS ];\n#else\nvarying vec4 vPointLight[ MAX_POINT_LIGHTS ];\n#endif\n#endif\n#ifdef WRAP_AROUND\nuniform vec3 wrapRGB;\n#endif\nvarying vec3 vViewPosition;\nvarying vec3 vNormal;",
-lights_phong_fragment:"vec3 normal = normalize( vNormal );\nvec3 viewPosition = normalize( vViewPosition );\n#if MAX_POINT_LIGHTS > 0\nvec3 pointDiffuse  = vec3( 0.0 );\nvec3 pointSpecular = vec3( 0.0 );\nfor ( int i = 0; i < MAX_POINT_LIGHTS; i ++ ) {\n#ifdef PHONG_PER_PIXEL\nvec4 lPosition = viewMatrix * vec4( pointLightPosition[ i ], 1.0 );\nvec3 lVector = lPosition.xyz + vViewPosition.xyz;\nfloat lDistance = 1.0;\nif ( pointLightDistance[ i ] > 0.0 )\nlDistance = 1.0 - min( ( length( lVector ) / pointLightDistance[ i ] ), 1.0 );\nlVector = normalize( lVector );\n#else\nvec3 lVector = normalize( vPointLight[ i ].xyz );\nfloat lDistance = vPointLight[ i ].w;\n#endif\n#ifdef WRAP_AROUND\nfloat pointDiffuseWeightFull = max( dot( normal, lVector ), 0.0 );\nfloat pointDiffuseWeightHalf = max( 0.5 * dot( normal, lVector ) + 0.5, 0.0 );\nvec3 pointDiffuseWeight = mix( vec3 ( pointDiffuseWeightFull ), vec3( pointDiffuseWeightHalf ), wrapRGB );\n#else\nfloat pointDiffuseWeight = max( dot( normal, lVector ), 0.0 );\n#endif\npointDiffuse  += diffuse * pointLightColor[ i ] * pointDiffuseWeight * lDistance;\nvec3 pointHalfVector = normalize( lVector + viewPosition );\nfloat pointDotNormalHalf = max( dot( normal, pointHalfVector ), 0.0 );\nfloat pointSpecularWeight = pow( pointDotNormalHalf, shininess );\n#ifdef PHYSICALLY_BASED_SHADING\nvec3 schlick = specular + vec3( 1.0 - specular ) * pow( dot( lVector, pointHalfVector ), 5.0 );\npointSpecular += schlick * pointLightColor[ i ] * pointSpecularWeight * pointDiffuseWeight * lDistance;\n#else\npointSpecular += specular * pointLightColor[ i ] * pointSpecularWeight * pointDiffuseWeight * lDistance;\n#endif\n}\n#endif\n#if MAX_DIR_LIGHTS > 0\nvec3 dirDiffuse  = vec3( 0.0 );\nvec3 dirSpecular = vec3( 0.0 );\nfor( int i = 0; i < MAX_DIR_LIGHTS; i ++ ) {\nvec4 lDirection = viewMatrix * vec4( directionalLightDirection[ i ], 0.0 );\nvec3 dirVector = normalize( lDirection.xyz );\n#ifdef WRAP_AROUND\nfloat dirDiffuseWeightFull = max( dot( normal, dirVector ), 0.0 );\nfloat dirDiffuseWeightHalf = max( 0.5 * dot( normal, dirVector ) + 0.5, 0.0 );\nvec3 dirDiffuseWeight = mix( vec3( dirDiffuseWeightFull ), vec3( dirDiffuseWeightHalf ), wrapRGB );\n#else\nfloat dirDiffuseWeight = max( dot( normal, dirVector ), 0.0 );\n#endif\ndirDiffuse  += diffuse * directionalLightColor[ i ] * dirDiffuseWeight;\nvec3 dirHalfVector = normalize( lDirection.xyz + viewPosition );\nfloat dirDotNormalHalf = max( dot( normal, dirHalfVector ), 0.0 );\nfloat dirSpecularWeight = pow( dirDotNormalHalf, shininess );\n#ifdef PHYSICALLY_BASED_SHADING\nvec3 schlick = specular + vec3( 1.0 - specular ) * pow( dot( dirVector, dirHalfVector ), 5.0 );\ndirSpecular += schlick * directionalLightColor[ i ] * dirSpecularWeight * dirDiffuseWeight;\n#else\ndirSpecular += specular * directionalLightColor[ i ] * dirSpecularWeight * dirDiffuseWeight;\n#endif\n}\n#endif\nvec3 totalDiffuse = vec3( 0.0 );\nvec3 totalSpecular = vec3( 0.0 );\n#if MAX_DIR_LIGHTS > 0\ntotalDiffuse += dirDiffuse;\ntotalSpecular += dirSpecular;\n#endif\n#if MAX_POINT_LIGHTS > 0\ntotalDiffuse += pointDiffuse;\ntotalSpecular += pointSpecular;\n#endif\n#ifdef METAL\ngl_FragColor.xyz = gl_FragColor.xyz * ( totalDiffuse + ambientLightColor * ambient + totalSpecular );\n#else\ngl_FragColor.xyz = gl_FragColor.xyz * ( totalDiffuse + ambientLightColor * ambient ) + totalSpecular;\n#endif",
+lights_phong_fragment:"vec3 normal = normalize( vNormal );\nvec3 viewPosition = normalize( vViewPosition );\n#if MAX_POINT_LIGHTS > 0\nvec3 pointDiffuse  = vec3( 0.0 );\nvec3 pointSpecular = vec3( 0.0 );\nfor ( int i = 0; i < MAX_POINT_LIGHTS; i ++ ) {\n#ifdef PHONG_PER_PIXEL\nvec4 lPosition = viewMatrix * vec4( pointLightPosition[ i ], 1.0 );\nvec3 lVector = lPosition.xyz + vViewPosition.xyz;\nfloat lDistance = 1.0;\nif ( pointLightDistance[ i ] > 0.0 )\nlDistance = 1.0 - min( ( length( lVector ) / pointLightDistance[ i ] ), 1.0 );\nlVector = normalize( lVector );\n#else\nvec3 lVector = normalize( vPointLight[ i ].xyz );\nfloat lDistance = vPointLight[ i ].w;\n#endif\n#ifdef WRAP_AROUND\nfloat pointDiffuseWeightFull = max( dot( normal, lVector ), 0.0 );\nfloat pointDiffuseWeightHalf = max( 0.5 * dot( normal, lVector ) + 0.5, 0.0 );\nvec3 pointDiffuseWeight = mix( vec3 ( pointDiffuseWeightFull ), vec3( pointDiffuseWeightHalf ), wrapRGB );\n#else\nfloat pointDiffuseWeight = max( dot( normal, lVector ), 0.0 );\n#endif\npointDiffuse  += diffuse * pointLightColor[ i ] * pointDiffuseWeight * lDistance;\nvec3 pointHalfVector = normalize( lVector + viewPosition );\nfloat pointDotNormalHalf = max( dot( normal, pointHalfVector ), 0.0 );\nfloat pointSpecularWeight = max( pow( pointDotNormalHalf, shininess ), 0.0 );\n#ifdef PHYSICALLY_BASED_SHADING\nvec3 schlick = specular + vec3( 1.0 - specular ) * pow( dot( lVector, pointHalfVector ), 5.0 );\npointSpecular += schlick * pointLightColor[ i ] * pointSpecularWeight * pointDiffuseWeight * lDistance;\n#else\npointSpecular += specular * pointLightColor[ i ] * pointSpecularWeight * pointDiffuseWeight * lDistance;\n#endif\n}\n#endif\n#if MAX_DIR_LIGHTS > 0\nvec3 dirDiffuse  = vec3( 0.0 );\nvec3 dirSpecular = vec3( 0.0 );\nfor( int i = 0; i < MAX_DIR_LIGHTS; i ++ ) {\nvec4 lDirection = viewMatrix * vec4( directionalLightDirection[ i ], 0.0 );\nvec3 dirVector = normalize( lDirection.xyz );\n#ifdef WRAP_AROUND\nfloat dirDiffuseWeightFull = max( dot( normal, dirVector ), 0.0 );\nfloat dirDiffuseWeightHalf = max( 0.5 * dot( normal, dirVector ) + 0.5, 0.0 );\nvec3 dirDiffuseWeight = mix( vec3( dirDiffuseWeightFull ), vec3( dirDiffuseWeightHalf ), wrapRGB );\n#else\nfloat dirDiffuseWeight = max( dot( normal, dirVector ), 0.0 );\n#endif\ndirDiffuse  += diffuse * directionalLightColor[ i ] * dirDiffuseWeight;\nvec3 dirHalfVector = normalize( lDirection.xyz + viewPosition );\nfloat dirDotNormalHalf = max( dot( normal, dirHalfVector ), 0.0 );\nfloat dirSpecularWeight = max( pow( dirDotNormalHalf, shininess ), 0.0 );\n#ifdef PHYSICALLY_BASED_SHADING\nvec3 schlick = specular + vec3( 1.0 - specular ) * pow( dot( dirVector, dirHalfVector ), 5.0 );\ndirSpecular += schlick * directionalLightColor[ i ] * dirSpecularWeight * dirDiffuseWeight;\n#else\ndirSpecular += specular * directionalLightColor[ i ] * dirSpecularWeight * dirDiffuseWeight;\n#endif\n}\n#endif\nvec3 totalDiffuse = vec3( 0.0 );\nvec3 totalSpecular = vec3( 0.0 );\n#if MAX_DIR_LIGHTS > 0\ntotalDiffuse += dirDiffuse;\ntotalSpecular += dirSpecular;\n#endif\n#if MAX_POINT_LIGHTS > 0\ntotalDiffuse += pointDiffuse;\ntotalSpecular += pointSpecular;\n#endif\n#ifdef METAL\ngl_FragColor.xyz = gl_FragColor.xyz * ( totalDiffuse + ambientLightColor * ambient + totalSpecular );\n#else\ngl_FragColor.xyz = gl_FragColor.xyz * ( totalDiffuse + ambientLightColor * ambient ) + totalSpecular;\n#endif",
 color_pars_fragment:"#ifdef USE_COLOR\nvarying vec3 vColor;\n#endif",color_fragment:"#ifdef USE_COLOR\ngl_FragColor = gl_FragColor * vec4( vColor, opacity );\n#endif",color_pars_vertex:"#ifdef USE_COLOR\nvarying vec3 vColor;\n#endif",color_vertex:"#ifdef USE_COLOR\n#ifdef GAMMA_INPUT\nvColor = color * color;\n#else\nvColor = color;\n#endif\n#endif",skinning_pars_vertex:"#ifdef USE_SKINNING\nuniform mat4 boneGlobalMatrices[ MAX_BONES ];\n#endif",skinning_vertex:"#ifdef USE_SKINNING\ngl_Position  = ( boneGlobalMatrices[ int( skinIndex.x ) ] * skinVertexA ) * skinWeight.x;\ngl_Position += ( boneGlobalMatrices[ int( skinIndex.y ) ] * skinVertexB ) * skinWeight.y;\ngl_Position  = projectionMatrix * viewMatrix * objectMatrix * gl_Position;\n#endif",
 morphtarget_pars_vertex:"#ifdef USE_MORPHTARGETS\nuniform float morphTargetInfluences[ 8 ];\n#endif",morphtarget_vertex:"#ifdef USE_MORPHTARGETS\nvec3 morphed = vec3( 0.0, 0.0, 0.0 );\nmorphed += ( morphTarget0 - position ) * morphTargetInfluences[ 0 ];\nmorphed += ( morphTarget1 - position ) * morphTargetInfluences[ 1 ];\nmorphed += ( morphTarget2 - position ) * morphTargetInfluences[ 2 ];\nmorphed += ( morphTarget3 - position ) * morphTargetInfluences[ 3 ];\nmorphed += ( morphTarget4 - position ) * morphTargetInfluences[ 4 ];\nmorphed += ( morphTarget5 - position ) * morphTargetInfluences[ 5 ];\nmorphed += ( morphTarget6 - position ) * morphTargetInfluences[ 6 ];\nmorphed += ( morphTarget7 - position ) * morphTargetInfluences[ 7 ];\nmorphed += position;\ngl_Position = projectionMatrix * modelViewMatrix * vec4( morphed, 1.0 );\n#endif",
 default_vertex:"#ifndef USE_MORPHTARGETS\n#ifndef USE_SKINNING\ngl_Position = projectionMatrix * mvPosition;\n#endif\n#endif",shadowmap_pars_fragment:"#ifdef USE_SHADOWMAP\nuniform sampler2D shadowMap[ MAX_SHADOWS ];\nuniform float shadowDarkness;\nuniform float shadowBias;\nvarying vec4 vShadowCoord[ MAX_SHADOWS ];\nfloat unpackDepth( const in vec4 rgba_depth ) {\nconst vec4 bit_shift = vec4( 1.0 / ( 256.0 * 256.0 * 256.0 ), 1.0 / ( 256.0 * 256.0 ), 1.0 / 256.0, 1.0 );\nfloat depth = dot( rgba_depth, bit_shift );\nreturn depth;\n}\n#endif",

examples/js/ShaderTerrain.js

@@ -173,7 +173,7 @@ THREE.ShaderTerrain = {
 						"float pointDotNormalHalf = max( dot( normal, pointHalfVector ), 0.0 );",
 						"float pointDiffuseWeight = max( dot( normal, lVector ), 0.0 );",
 
-						"float pointSpecularWeight = specularTex.r * pow( pointDotNormalHalf, uShininess );",
+						"float pointSpecularWeight = specularTex.r * max( pow( pointDotNormalHalf, uShininess ), 0.0 );",
 
 						"pointDiffuse += pointDistance * pointLightColor[ i ] * uDiffuseColor * pointDiffuseWeight;",
 						"pointSpecular += pointDistance * pointLightColor[ i ] * uSpecularColor * pointSpecularWeight * pointDiffuseWeight;",
@@ -199,7 +199,7 @@ THREE.ShaderTerrain = {
 						"float dirDotNormalHalf = max( dot( normal, dirHalfVector ), 0.0 );",
 						"float dirDiffuseWeight = max( dot( normal, dirVector ), 0.0 );",
 
-						"float dirSpecularWeight = specularTex.r * pow( dirDotNormalHalf, uShininess );",
+						"float dirSpecularWeight = specularTex.r * max( pow( dirDotNormalHalf, uShininess ), 0.0 );",
 
 						"dirDiffuse += directionalLightColor[ i ] * uDiffuseColor * dirDiffuseWeight;",
 						"dirSpecular += directionalLightColor[ i ] * uSpecularColor * dirSpecularWeight * dirDiffuseWeight;",

src/extras/ShaderUtils.js

@@ -277,7 +277,7 @@ THREE.ShaderUtils = {
 
 							"vec3 pointHalfVector = normalize( vPointLight[ i ].xyz + viewPosition );",
 							"float pointDotNormalHalf = max( dot( normal, pointHalfVector ), 0.0 );",
-							"float pointSpecularWeight = specularTex.r * pow( pointDotNormalHalf, uShininess );",
+							"float pointSpecularWeight = specularTex.r * max( pow( pointDotNormalHalf, uShininess ), 0.0 );",
 
 							"pointSpecular += pointDistance * pointLightColor[ i ] * uSpecularColor * pointSpecularWeight * pointDiffuseWeight;",
 
@@ -318,7 +318,7 @@ THREE.ShaderUtils = {
 
 							"vec3 dirHalfVector = normalize( lDirection.xyz + viewPosition );",
 							"float dirDotNormalHalf = max( dot( normal, dirHalfVector ), 0.0 );",
-							"float dirSpecularWeight = specularTex.r * pow( dirDotNormalHalf, uShininess );",
+							"float dirSpecularWeight = specularTex.r * max( pow( dirDotNormalHalf, uShininess ), 0.0 );",
 
 							"dirSpecular += directionalLightColor[ i ] * uSpecularColor * dirSpecularWeight * dirDiffuseWeight;",
 

src/renderers/WebGLShaders.js

@@ -486,7 +486,7 @@ THREE.ShaderChunk = {
 
 				"vec3 pointHalfVector = normalize( lVector + viewPosition );",
 				"float pointDotNormalHalf = max( dot( normal, pointHalfVector ), 0.0 );",
-				"float pointSpecularWeight = pow( pointDotNormalHalf, shininess );",
+				"float pointSpecularWeight = max( pow( pointDotNormalHalf, shininess ), 0.0 );",
 
 				"#ifdef PHYSICALLY_BASED_SHADING",
 
@@ -534,7 +534,7 @@ THREE.ShaderChunk = {
 
 				"vec3 dirHalfVector = normalize( lDirection.xyz + viewPosition );",
 				"float dirDotNormalHalf = max( dot( normal, dirHalfVector ), 0.0 );",
-				"float dirSpecularWeight = pow( dirDotNormalHalf, shininess );",
+				"float dirSpecularWeight = max( pow( dirDotNormalHalf, shininess ), 0.0 );",
 
 				"#ifdef PHYSICALLY_BASED_SHADING",