Spaces:
Running
Running
File size: 10,726 Bytes
a28eca3 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 |
import { ShaderChunk } from 'three';
const CSMShader = {
lights_fragment_begin: /* glsl */`
vec3 geometryPosition = - vViewPosition;
vec3 geometryNormal = normal;
vec3 geometryViewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );
vec3 geometryClearcoatNormal = vec3( 0.0 );
#ifdef USE_CLEARCOAT
geometryClearcoatNormal = clearcoatNormal;
#endif
#ifdef USE_IRIDESCENCE
float dotNVi = saturate( dot( normal, geometryViewDir ) );
if ( material.iridescenceThickness == 0.0 ) {
material.iridescence = 0.0;
} else {
material.iridescence = saturate( material.iridescence );
}
if ( material.iridescence > 0.0 ) {
material.iridescenceFresnel = evalIridescence( 1.0, material.iridescenceIOR, dotNVi, material.iridescenceThickness, material.specularColor );
// Iridescence F0 approximation
material.iridescenceF0 = Schlick_to_F0( material.iridescenceFresnel, 1.0, dotNVi );
}
#endif
IncidentLight directLight;
#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )
PointLight pointLight;
#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0
PointLightShadow pointLightShadow;
#endif
#pragma unroll_loop_start
for ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {
pointLight = pointLights[ i ];
getPointLightInfo( pointLight, geometryPosition, directLight );
#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )
pointLightShadow = pointLightShadows[ i ];
directLight.color *= ( directLight.visible && receiveShadow ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;
#endif
RE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
}
#pragma unroll_loop_end
#endif
#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )
SpotLight spotLight;
vec4 spotColor;
vec3 spotLightCoord;
bool inSpotLightMap;
#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0
SpotLightShadow spotLightShadow;
#endif
#pragma unroll_loop_start
for ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {
spotLight = spotLights[ i ];
getSpotLightInfo( spotLight, geometryPosition, directLight );
// spot lights are ordered [shadows with maps, shadows without maps, maps without shadows, none]
#if ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS )
#define SPOT_LIGHT_MAP_INDEX UNROLLED_LOOP_INDEX
#elif ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )
#define SPOT_LIGHT_MAP_INDEX NUM_SPOT_LIGHT_MAPS
#else
#define SPOT_LIGHT_MAP_INDEX ( UNROLLED_LOOP_INDEX - NUM_SPOT_LIGHT_SHADOWS + NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS )
#endif
#if ( SPOT_LIGHT_MAP_INDEX < NUM_SPOT_LIGHT_MAPS )
spotLightCoord = vSpotLightCoord[ i ].xyz / vSpotLightCoord[ i ].w;
inSpotLightMap = all( lessThan( abs( spotLightCoord * 2. - 1. ), vec3( 1.0 ) ) );
spotColor = texture2D( spotLightMap[ SPOT_LIGHT_MAP_INDEX ], spotLightCoord.xy );
directLight.color = inSpotLightMap ? directLight.color * spotColor.rgb : directLight.color;
#endif
#undef SPOT_LIGHT_MAP_INDEX
#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )
spotLightShadow = spotLightShadows[ i ];
directLight.color *= ( directLight.visible && receiveShadow ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowIntensity, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotLightCoord[ i ] ) : 1.0;
#endif
RE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
}
#pragma unroll_loop_end
#endif
#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct ) && defined( USE_CSM ) && defined( CSM_CASCADES )
DirectionalLight directionalLight;
float linearDepth = (vViewPosition.z) / (shadowFar - cameraNear);
#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0
DirectionalLightShadow directionalLightShadow;
#endif
#if defined( USE_SHADOWMAP ) && defined( CSM_FADE )
vec2 cascade;
float cascadeCenter;
float closestEdge;
float margin;
float csmx;
float csmy;
#pragma unroll_loop_start
for ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {
directionalLight = directionalLights[ i ];
getDirectionalLightInfo( directionalLight, directLight );
#if ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )
// NOTE: Depth gets larger away from the camera.
// cascade.x is closer, cascade.y is further
cascade = CSM_cascades[ i ];
cascadeCenter = ( cascade.x + cascade.y ) / 2.0;
closestEdge = linearDepth < cascadeCenter ? cascade.x : cascade.y;
margin = 0.25 * pow( closestEdge, 2.0 );
csmx = cascade.x - margin / 2.0;
csmy = cascade.y + margin / 2.0;
if( linearDepth >= csmx && ( linearDepth < csmy || UNROLLED_LOOP_INDEX == CSM_CASCADES - 1 ) ) {
float dist = min( linearDepth - csmx, csmy - linearDepth );
float ratio = clamp( dist / margin, 0.0, 1.0 );
vec3 prevColor = directLight.color;
directionalLightShadow = directionalLightShadows[ i ];
directLight.color *= ( directLight.visible && receiveShadow ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowIntensity, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;
bool shouldFadeLastCascade = UNROLLED_LOOP_INDEX == CSM_CASCADES - 1 && linearDepth > cascadeCenter;
directLight.color = mix( prevColor, directLight.color, shouldFadeLastCascade ? ratio : 1.0 );
ReflectedLight prevLight = reflectedLight;
RE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
bool shouldBlend = UNROLLED_LOOP_INDEX != CSM_CASCADES - 1 || UNROLLED_LOOP_INDEX == CSM_CASCADES - 1 && linearDepth < cascadeCenter;
float blendRatio = shouldBlend ? ratio : 1.0;
reflectedLight.directDiffuse = mix( prevLight.directDiffuse, reflectedLight.directDiffuse, blendRatio );
reflectedLight.directSpecular = mix( prevLight.directSpecular, reflectedLight.directSpecular, blendRatio );
reflectedLight.indirectDiffuse = mix( prevLight.indirectDiffuse, reflectedLight.indirectDiffuse, blendRatio );
reflectedLight.indirectSpecular = mix( prevLight.indirectSpecular, reflectedLight.indirectSpecular, blendRatio );
}
#endif
}
#pragma unroll_loop_end
#elif defined (USE_SHADOWMAP)
#pragma unroll_loop_start
for ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {
directionalLight = directionalLights[ i ];
getDirectionalLightInfo( directionalLight, directLight );
#if ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )
directionalLightShadow = directionalLightShadows[ i ];
if(linearDepth >= CSM_cascades[UNROLLED_LOOP_INDEX].x && linearDepth < CSM_cascades[UNROLLED_LOOP_INDEX].y) directLight.color *= ( directLight.visible && receiveShadow ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowIntensity, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;
if(linearDepth >= CSM_cascades[UNROLLED_LOOP_INDEX].x && (linearDepth < CSM_cascades[UNROLLED_LOOP_INDEX].y || UNROLLED_LOOP_INDEX == CSM_CASCADES - 1)) RE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
#endif
}
#pragma unroll_loop_end
#elif ( NUM_DIR_LIGHT_SHADOWS > 0 )
// note: no loop here - all CSM lights are in fact one light only
getDirectionalLightInfo( directionalLights[0], directLight );
RE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
#endif
#if ( NUM_DIR_LIGHTS > NUM_DIR_LIGHT_SHADOWS)
// compute the lights not casting shadows (if any)
#pragma unroll_loop_start
for ( int i = NUM_DIR_LIGHT_SHADOWS; i < NUM_DIR_LIGHTS; i ++ ) {
directionalLight = directionalLights[ i ];
getDirectionalLightInfo( directionalLight, directLight );
RE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
}
#pragma unroll_loop_end
#endif
#endif
#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct ) && !defined( USE_CSM ) && !defined( CSM_CASCADES )
DirectionalLight directionalLight;
#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0
DirectionalLightShadow directionalLightShadow;
#endif
#pragma unroll_loop_start
for ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {
directionalLight = directionalLights[ i ];
getDirectionalLightInfo( directionalLight, directLight );
#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )
directionalLightShadow = directionalLightShadows[ i ];
directLight.color *= ( directLight.visible && receiveShadow ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowIntensity, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;
#endif
RE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
}
#pragma unroll_loop_end
#endif
#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )
RectAreaLight rectAreaLight;
#pragma unroll_loop_start
for ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {
rectAreaLight = rectAreaLights[ i ];
RE_Direct_RectArea( rectAreaLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
}
#pragma unroll_loop_end
#endif
#if defined( RE_IndirectDiffuse )
vec3 iblIrradiance = vec3( 0.0 );
vec3 irradiance = getAmbientLightIrradiance( ambientLightColor );
#if defined( USE_LIGHT_PROBES )
irradiance += getLightProbeIrradiance( lightProbe, geometryNormal );
#endif
#if ( NUM_HEMI_LIGHTS > 0 )
#pragma unroll_loop_start
for ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {
irradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometryNormal );
}
#pragma unroll_loop_end
#endif
#endif
#if defined( RE_IndirectSpecular )
vec3 radiance = vec3( 0.0 );
vec3 clearcoatRadiance = vec3( 0.0 );
#endif
`,
lights_pars_begin: /* glsl */`
#if defined( USE_CSM ) && defined( CSM_CASCADES )
uniform vec2 CSM_cascades[CSM_CASCADES];
uniform float cameraNear;
uniform float shadowFar;
#endif
` + ShaderChunk.lights_pars_begin
};
export { CSMShader };
|