basic.uniforms
uniforms: UniformsUtils.merge( [
/* UniformsLib.common
*/
{
diffuse: { value: new Color( 0xeeeeee ) },
opacity: { value: 1.0 },
map: { value: null },
offsetRepeat: { value: new Vector4( 0, 0, 1, 1 ) },
specularMap: { value: null },
alphaMap: { value: null },
envMap: { value: null },
flipEnvMap: { value: - 1 },
reflectivity: { value: 1.0 },
refractionRatio: { value: 0.98 }
} /* UniformsLib.aomap
*/
{
aoMap: { value: null },
aoMapIntensity: { value: 1 }
} /* UniformsLib.lightmap
*/
{
lightMap: { value: null },
lightMapIntensity: { value: 1 }
} /* UniformsLib.fog
*/
{
fogDensity: { value: 0.00025 },
fogNear: { value: 1 },
fogFar: { value: 2000 },
fogColor: { value: new Color( 0xffffff ) }
} ] ),
meshbasic_vert.glsl
/* common.glsl */
#define PI 3.14159265359
#define PI2 6.28318530718
#define PI_HALF 1.5707963267949
#define RECIPROCAL_PI 0.31830988618
#define RECIPROCAL_PI2 0.15915494
#define LOG2 1.442695
#define EPSILON 1e-6
#define saturate(a) clamp( a, 0.0, 1.0 )
#define whiteCompliment(a) ( 1.0 - saturate( a ) )
float pow2( const in float x ) { return x*x; }
float pow3( const in float x ) { return x*x*x; }
float pow4( const in float x ) { float x2 = x*x; return x2*x2; }
float average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }
// expects values in the range of [0,1]x[0,1], returns values in the [0,1] range.
// do not collapse into a single function per: http://byteblacksmith.com/improvements-to-the-canonical-one-liner-glsl-rand-for-opengl-es-2-0/
highp float rand( const in vec2 uv ) {
const highp float a = 12.9898, b = 78.233, c = 43758.5453;
highp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );
return fract(sin(sn) * c);
}
struct IncidentLight {
vec3 color;
vec3 direction;
bool visible;
};
struct ReflectedLight {
vec3 directDiffuse;
vec3 directSpecular;
vec3 indirectDiffuse;
vec3 indirectSpecular;
};
struct GeometricContext {
vec3 position;
vec3 normal;
vec3 viewDir;
};
vec3 transformDirection( in vec3 dir, in mat4 matrix ) {
return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );
}
// http://en.wikibooks.org/wiki/GLSL_Programming/Applying_Matrix_Transformations
vec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {
return normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );
}
vec3 projectOnPlane(in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {
float distance = dot( planeNormal, point - pointOnPlane );
return - distance * planeNormal + point;
}
float sideOfPlane( in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {
return sign( dot( point - pointOnPlane, planeNormal ) );
}
vec3 linePlaneIntersect( in vec3 pointOnLine, in vec3 lineDirection, in vec3 pointOnPlane, in vec3 planeNormal ) {
return lineDirection * ( dot( planeNormal, pointOnPlane - pointOnLine ) / dot( planeNormal, lineDirection ) ) + pointOnLine;
}
mat3 transpose( const in mat3 v ) {
mat3 tmp;
tmp[0] = vec3(v[0].x, v[1].x, v[2].x);
tmp[1] = vec3(v[0].y, v[1].y, v[2].y);
tmp[2] = vec3(v[0].z, v[1].z, v[2].z);
return tmp;
}
/* uv_pars_vertex.glsl */
#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )
varying vec2 vUv;
uniform vec4 offsetRepeat;
#endif
/* uv2_pars_vertex.glsl */
#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )
attribute vec2 uv2;
varying vec2 vUv2;
#endif/* envmap_pars_vertex.glsl */
#ifdef USE_ENVMAP
#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )
varying vec3 vWorldPosition;
#else
varying vec3 vReflect;
uniform float refractionRatio;
#endif
#endif
/* color_pars_vertex.glsl */
#ifdef USE_COLOR
varying vec3 vColor;
#endif/* fog_pars_vertex.glsl */
#ifdef USE_FOG
varying float fogDepth;
#endif
/* morphtarget_pars_vertex.glsl */
#ifdef USE_MORPHTARGETS
#ifndef USE_MORPHNORMALS
uniform float morphTargetInfluences[ 8 ];
#else
uniform float morphTargetInfluences[ 4 ];
#endif
#endif/* skinning_pars_vertex.glsl */
#ifdef USE_SKINNING
uniform mat4 bindMatrix;
uniform mat4 bindMatrixInverse;
#ifdef BONE_TEXTURE
uniform sampler2D boneTexture;
uniform int boneTextureSize;
mat4 getBoneMatrix( const in float i ) {
float j = i * 4.0;
float x = mod( j, float( boneTextureSize ) );
float y = floor( j / float( boneTextureSize ) );
float dx = 1.0 / float( boneTextureSize );
float dy = 1.0 / float( boneTextureSize );
y = dy * ( y + 0.5 );
vec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );
vec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );
vec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );
vec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );
mat4 bone = mat4( v1, v2, v3, v4 );
return bone;
}
#else
uniform mat4 boneMatrices[ MAX_BONES ];
mat4 getBoneMatrix( const in float i ) {
mat4 bone = boneMatrices[ int(i) ];
return bone;
}
#endif
#endif
/* logdepthbuf_pars_vertex.glsl */
#ifdef USE_LOGDEPTHBUF
#ifdef USE_LOGDEPTHBUF_EXT
varying float vFragDepth;
#endif
uniform float logDepthBufFC;
#endif/* clipping_planes_pars_vertex.glsl */
#if NUM_CLIPPING_PLANES > 0 && ! defined( PHYSICAL ) && ! defined( PHONG )
varying vec3 vViewPosition;
#endif
void main() {
/* uv_vertex.glsl */
#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )
vUv = uv * offsetRepeat.zw + offsetRepeat.xy;
#endif/* uv2_vertex.glsl */
#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )
vUv2 = uv2;
#endif/* color_vertex.glsl */
#ifdef USE_COLOR
vColor.xyz = color.xyz;
#endif/* skinbase_vertex.glsl */
#ifdef USE_SKINNING
mat4 boneMatX = getBoneMatrix( skinIndex.x );
mat4 boneMatY = getBoneMatrix( skinIndex.y );
mat4 boneMatZ = getBoneMatrix( skinIndex.z );
mat4 boneMatW = getBoneMatrix( skinIndex.w );
#endif
#ifdef USE_ENVMAP
/* beginnormal_vertex.glsl */
vec3 objectNormal = vec3( normal );
/* morphnormal_vertex.glsl */
#ifdef USE_MORPHNORMALS
objectNormal += ( morphNormal0 - normal ) * morphTargetInfluences[ 0 ];
objectNormal += ( morphNormal1 - normal ) * morphTargetInfluences[ 1 ];
objectNormal += ( morphNormal2 - normal ) * morphTargetInfluences[ 2 ];
objectNormal += ( morphNormal3 - normal ) * morphTargetInfluences[ 3 ];
#endif
/* skinnormal_vertex.glsl */
#ifdef USE_SKINNING
mat4 skinMatrix = mat4( 0.0 );
skinMatrix += skinWeight.x * boneMatX;
skinMatrix += skinWeight.y * boneMatY;
skinMatrix += skinWeight.z * boneMatZ;
skinMatrix += skinWeight.w * boneMatW;
skinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;
objectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;
#endif
/* defaultnormal_vertex.glsl */
vec3 transformedNormal = normalMatrix * objectNormal;
#ifdef FLIP_SIDED
transformedNormal = - transformedNormal;
#endif
#endif
/* begin_vertex.glsl */
vec3 transformed = vec3( position );
/* morphtarget_vertex.glsl */
#ifdef USE_MORPHTARGETS
transformed += ( morphTarget0 - position ) * morphTargetInfluences[ 0 ];
transformed += ( morphTarget1 - position ) * morphTargetInfluences[ 1 ];
transformed += ( morphTarget2 - position ) * morphTargetInfluences[ 2 ];
transformed += ( morphTarget3 - position ) * morphTargetInfluences[ 3 ];
#ifndef USE_MORPHNORMALS
transformed += ( morphTarget4 - position ) * morphTargetInfluences[ 4 ];
transformed += ( morphTarget5 - position ) * morphTargetInfluences[ 5 ];
transformed += ( morphTarget6 - position ) * morphTargetInfluences[ 6 ];
transformed += ( morphTarget7 - position ) * morphTargetInfluences[ 7 ];
#endif
#endif
/* skinning_vertex.glsl */
#ifdef USE_SKINNING
vec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );
vec4 skinned = vec4( 0.0 );
skinned += boneMatX * skinVertex * skinWeight.x;
skinned += boneMatY * skinVertex * skinWeight.y;
skinned += boneMatZ * skinVertex * skinWeight.z;
skinned += boneMatW * skinVertex * skinWeight.w;
transformed = ( bindMatrixInverse * skinned ).xyz;
#endif
/* project_vertex.glsl */
vec4 mvPosition = modelViewMatrix * vec4( transformed, 1.0 );
gl_Position = projectionMatrix * mvPosition;
/* logdepthbuf_vertex.glsl */
#ifdef USE_LOGDEPTHBUF
gl_Position.z = log2(max( EPSILON, gl_Position.w + 1.0 )) * logDepthBufFC;
#ifdef USE_LOGDEPTHBUF_EXT
vFragDepth = 1.0 + gl_Position.w;
#else
gl_Position.z = (gl_Position.z - 1.0) * gl_Position.w;
#endif
#endif
/* worldpos_vertex.glsl */
#if defined( USE_ENVMAP ) || defined( PHONG ) || defined( PHYSICAL ) || defined( LAMBERT ) || defined ( USE_SHADOWMAP )
vec4 worldPosition = modelMatrix * vec4( transformed, 1.0 );
#endif
/* clipping_planes_vertex.glsl */
#if NUM_CLIPPING_PLANES > 0 && ! defined( PHYSICAL ) && ! defined( PHONG )
vViewPosition = - mvPosition.xyz;
#endif
/* envmap_vertex.glsl */
#ifdef USE_ENVMAP
#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )
vWorldPosition = worldPosition.xyz;
#else
vec3 cameraToVertex = normalize( worldPosition.xyz - cameraPosition );
vec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );
#ifdef ENVMAP_MODE_REFLECTION
vReflect = reflect( cameraToVertex, worldNormal );
#else
vReflect = refract( cameraToVertex, worldNormal, refractionRatio );
#endif
#endif
#endif
/* fog_vertex.glsl */
#ifdef USE_FOG
fogDepth = -mvPosition.z;
#endif
}
meshbasic_frag.glsl
uniform vec3 diffuse;
uniform float opacity;
#ifndef FLAT_SHADED
varying vec3 vNormal;
#endif
/* common.glsl */
#define PI 3.14159265359
#define PI2 6.28318530718
#define PI_HALF 1.5707963267949
#define RECIPROCAL_PI 0.31830988618
#define RECIPROCAL_PI2 0.15915494
#define LOG2 1.442695
#define EPSILON 1e-6
#define saturate(a) clamp( a, 0.0, 1.0 )
#define whiteCompliment(a) ( 1.0 - saturate( a ) )
float pow2( const in float x ) { return x*x; }
float pow3( const in float x ) { return x*x*x; }
float pow4( const in float x ) { float x2 = x*x; return x2*x2; }
float average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }
// expects values in the range of [0,1]x[0,1], returns values in the [0,1] range.
// do not collapse into a single function per: http://byteblacksmith.com/improvements-to-the-canonical-one-liner-glsl-rand-for-opengl-es-2-0/
highp float rand( const in vec2 uv ) {
const highp float a = 12.9898, b = 78.233, c = 43758.5453;
highp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );
return fract(sin(sn) * c);
}
struct IncidentLight {
vec3 color;
vec3 direction;
bool visible;
};
struct ReflectedLight {
vec3 directDiffuse;
vec3 directSpecular;
vec3 indirectDiffuse;
vec3 indirectSpecular;
};
struct GeometricContext {
vec3 position;
vec3 normal;
vec3 viewDir;
};
vec3 transformDirection( in vec3 dir, in mat4 matrix ) {
return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );
}
// http://en.wikibooks.org/wiki/GLSL_Programming/Applying_Matrix_Transformations
vec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {
return normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );
}
vec3 projectOnPlane(in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {
float distance = dot( planeNormal, point - pointOnPlane );
return - distance * planeNormal + point;
}
float sideOfPlane( in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {
return sign( dot( point - pointOnPlane, planeNormal ) );
}
vec3 linePlaneIntersect( in vec3 pointOnLine, in vec3 lineDirection, in vec3 pointOnPlane, in vec3 planeNormal ) {
return lineDirection * ( dot( planeNormal, pointOnPlane - pointOnLine ) / dot( planeNormal, lineDirection ) ) + pointOnLine;
}
mat3 transpose( const in mat3 v ) {
mat3 tmp;
tmp[0] = vec3(v[0].x, v[1].x, v[2].x);
tmp[1] = vec3(v[0].y, v[1].y, v[2].y);
tmp[2] = vec3(v[0].z, v[1].z, v[2].z);
return tmp;
}
/* color_pars_fragment.glsl */
#ifdef USE_COLOR
varying vec3 vColor;
#endif
/* uv_pars_fragment.glsl */
#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )
varying vec2 vUv;
#endif/* uv2_pars_fragment.glsl */
#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )
varying vec2 vUv2;
#endif/* map_pars_fragment.glsl */
#ifdef USE_MAP
uniform sampler2D map;
#endif
/* alphamap_pars_fragment.glsl */
#ifdef USE_ALPHAMAP
uniform sampler2D alphaMap;
#endif
/* aomap_pars_fragment.glsl */
#ifdef USE_AOMAP
uniform sampler2D aoMap;
uniform float aoMapIntensity;
#endif/* lightmap_pars_fragment.glsl */
#ifdef USE_LIGHTMAP
uniform sampler2D lightMap;
uniform float lightMapIntensity;
#endif/* envmap_pars_fragment.glsl */
#if defined( USE_ENVMAP ) || defined( PHYSICAL )
uniform float reflectivity;
uniform float envMapIntensity;
#endif
#ifdef USE_ENVMAP
#if ! defined( PHYSICAL ) && ( defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) )
varying vec3 vWorldPosition;
#endif
#ifdef ENVMAP_TYPE_CUBE
uniform samplerCube envMap;
#else
uniform sampler2D envMap;
#endif
uniform float flipEnvMap;
#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( PHYSICAL )
uniform float refractionRatio;
#else
varying vec3 vReflect;
#endif
#endif
/* fog_pars_fragment.glsl */
#ifdef USE_FOG
uniform vec3 fogColor;
varying float fogDepth;
#ifdef FOG_EXP2
uniform float fogDensity;
#else
uniform float fogNear;
uniform float fogFar;
#endif
#endif
/* specularmap_pars_fragment.glsl */
#ifdef USE_SPECULARMAP
uniform sampler2D specularMap;
#endif/* logdepthbuf_pars_fragment.glsl */
#ifdef USE_LOGDEPTHBUF
uniform float logDepthBufFC;
#ifdef USE_LOGDEPTHBUF_EXT
varying float vFragDepth;
#endif
#endif
/* clipping_planes_pars_fragment.glsl */
#if NUM_CLIPPING_PLANES > 0
#if ! defined( PHYSICAL ) && ! defined( PHONG )
varying vec3 vViewPosition;
#endif
uniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];
#endif
void main() {
/* clipping_planes_fragment.glsl */
#if NUM_CLIPPING_PLANES > 0
for ( int i = 0; i < UNION_CLIPPING_PLANES; ++ i ) {
vec4 plane = clippingPlanes[ i ];
if ( dot( vViewPosition, plane.xyz ) > plane.w ) discard;
}
#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES
bool clipped = true;
for ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; ++ i ) {
vec4 plane = clippingPlanes[ i ];
clipped = ( dot( vViewPosition, plane.xyz ) > plane.w ) && clipped;
}
if ( clipped ) discard;
#endif
#endif
vec4 diffuseColor = vec4( diffuse, opacity );
/* logdepthbuf_fragment.glsl */
#if defined(USE_LOGDEPTHBUF) && defined(USE_LOGDEPTHBUF_EXT)
gl_FragDepthEXT = log2(vFragDepth) * logDepthBufFC * 0.5;
#endif/* map_fragment.glsl */
#ifdef USE_MAP
vec4 texelColor = texture2D( map, vUv );
texelColor = mapTexelToLinear( texelColor );
diffuseColor *= texelColor;
#endif
/* color_fragment.glsl */
#ifdef USE_COLOR
diffuseColor.rgb *= vColor;
#endif/* alphamap_fragment.glsl */
#ifdef USE_ALPHAMAP
diffuseColor.a *= texture2D( alphaMap, vUv ).g;
#endif
/* alphatest_fragment.glsl */
#ifdef ALPHATEST
if ( diffuseColor.a < ALPHATEST ) discard;
#endif
/* specularmap_fragment.glsl */
float specularStrength;
#ifdef USE_SPECULARMAP
vec4 texelSpecular = texture2D( specularMap, vUv );
specularStrength = texelSpecular.r;
#else
specularStrength = 1.0;
#endif
ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );
// accumulation (baked indirect lighting only)
#ifdef USE_LIGHTMAP
reflectedLight.indirectDiffuse += texture2D( lightMap, vUv2 ).xyz * lightMapIntensity;
#else
reflectedLight.indirectDiffuse += vec3( 1.0 );
#endif
// modulation
/* aomap_fragment.glsl */
#ifdef USE_AOMAP
// reads channel R, compatible with a combined OcclusionRoughnessMetallic (RGB) texture
float ambientOcclusion = ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;
reflectedLight.indirectDiffuse *= ambientOcclusion;
#if defined( USE_ENVMAP ) && defined( PHYSICAL )
float dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );
reflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.specularRoughness );
#endif
#endif
reflectedLight.indirectDiffuse *= diffuseColor.rgb;
vec3 outgoingLight = reflectedLight.indirectDiffuse;
/* normal_flip.glsl */
#ifdef DOUBLE_SIDED
float flipNormal = ( float( gl_FrontFacing ) * 2.0 - 1.0 );
#else
float flipNormal = 1.0;
#endif
/* envmap_fragment.glsl */
#ifdef USE_ENVMAP
#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )
vec3 cameraToVertex = normalize( vWorldPosition - cameraPosition );
// Transforming Normal Vectors with the Inverse Transformation
vec3 worldNormal = inverseTransformDirection( normal, viewMatrix );
#ifdef ENVMAP_MODE_REFLECTION
vec3 reflectVec = reflect( cameraToVertex, worldNormal );
#else
vec3 reflectVec = refract( cameraToVertex, worldNormal, refractionRatio );
#endif
#else
vec3 reflectVec = vReflect;
#endif
#ifdef ENVMAP_TYPE_CUBE
vec4 envColor = textureCube( envMap, flipNormal * vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );
#elif defined( ENVMAP_TYPE_EQUIREC )
vec2 sampleUV;
sampleUV.y = asin( flipNormal * reflectVec.y ) * RECIPROCAL_PI + 0.5;
sampleUV.x = atan( flipNormal * reflectVec.z, flipNormal * reflectVec.x ) * RECIPROCAL_PI2 + 0.5;
vec4 envColor = texture2D( envMap, sampleUV );
#elif defined( ENVMAP_TYPE_SPHERE )
vec3 reflectView = flipNormal * normalize( ( viewMatrix * vec4( reflectVec, 0.0 ) ).xyz + vec3( 0.0, 0.0, 1.0 ) );
vec4 envColor = texture2D( envMap, reflectView.xy * 0.5 + 0.5 );
#else
vec4 envColor = vec4( 0.0 );
#endif
envColor = envMapTexelToLinear( envColor );
#ifdef ENVMAP_BLENDING_MULTIPLY
outgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );
#elif defined( ENVMAP_BLENDING_MIX )
outgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );
#elif defined( ENVMAP_BLENDING_ADD )
outgoingLight += envColor.xyz * specularStrength * reflectivity;
#endif
#endif
gl_FragColor = vec4( outgoingLight, diffuseColor.a );
/* premultiplied_alpha_fragment.glsl */
#ifdef PREMULTIPLIED_ALPHA
// Get get normal blending with premultipled, use with CustomBlending, OneFactor, OneMinusSrcAlphaFactor, AddEquation.
gl_FragColor.rgb *= gl_FragColor.a;
#endif
/* tonemapping_fragment.glsl */
#if defined( TONE_MAPPING )
gl_FragColor.rgb = toneMapping( gl_FragColor.rgb );
#endif
/* encodings_fragment.glsl */
gl_FragColor = linearToOutputTexel( gl_FragColor );
/* fog_fragment.glsl */
#ifdef USE_FOG
#ifdef FOG_EXP2
float fogFactor = whiteCompliment( exp2( - fogDensity * fogDensity * fogDepth * fogDepth * LOG2 ) );
#else
float fogFactor = smoothstep( fogNear, fogFar, fogDepth );
#endif
gl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );
#endif
}
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