offset += chunkPadding; // Check for chunk overflow if ( chunkStart !== 0 && ( chunkSize - chunkStart ) < info.storage ) { // Add padding and adjust offset offset += ( chunkSize - chunkStart ); } // the following two properties will be used for partial buffer updates uniform.__data = new Float32Array( info.storage / Float32Array.BYTES_PER_ELEMENT ); uniform.__offset = offset; // Update the global offset offset += info.storage; } } } // ensure correct final padding const chunkOffset = offset % chunkSize; if ( chunkOffset > 0 ) offset += ( chunkSize - chunkOffset ); // uniformsGroup.__size = offset; uniformsGroup.__cache = {}; return this; } function getUniformSize( value ) { const info = { boundary: 0, // bytes storage: 0 // bytes }; // determine sizes according to STD140 if ( typeof value === 'number' || typeof value === 'boolean' ) { // float/int/bool info.boundary = 4; info.storage = 4; } else if ( value.isVector2 ) { // vec2 info.boundary = 8; info.storage = 8; } else if ( value.isVector3 || value.isColor ) { // vec3 info.boundary = 16; info.storage = 12; // evil: vec3 must start on a 16-byte boundary but it only consumes 12 bytes } else if ( value.isVector4 ) { // vec4 info.boundary = 16; info.storage = 16; } else if ( value.isMatrix3 ) { // mat3 (in STD140 a 3x3 matrix is represented as 3x4) info.boundary = 48; info.storage = 48; } else if ( value.isMatrix4 ) { // mat4 info.boundary = 64; info.storage = 64; } else if ( value.isTexture ) { warn( 'WebGLRenderer: Texture samplers can not be part of an uniforms group.' ); } else if ( ArrayBuffer.isView( value ) ) { info.boundary = 16; info.storage = value.byteLength; } else { warn( 'WebGLRenderer: Unsupported uniform value type.', value ); } return info; } function onUniformsGroupsDispose( event ) { const uniformsGroup = event.target; uniformsGroup.removeEventListener( 'dispose', onUniformsGroupsDispose ); const index = allocatedBindingPoints.indexOf( uniformsGroup.__bindingPointIndex ); allocatedBindingPoints.splice( index, 1 ); gl.deleteBuffer( buffers[ uniformsGroup.id ] ); delete buffers[ uniformsGroup.id ]; delete updateList[ uniformsGroup.id ]; } function dispose() { for ( const id in buffers ) { gl.deleteBuffer( buffers[ id ] ); } allocatedBindingPoints = []; buffers = {}; updateList = {}; } return { bind: bind, update: update, dispose: dispose }; } /** * Precomputed DFG LUT for physically based specular lighting, used by both * image-based lighting and direct-light multi-scattering energy compensation * Resolution: 16x16 * Samples: 4096 per texel * Format: RG16F (2 half floats per texel: scale, bias) */ const DATA = new Uint16Array( [ 0x30b5, 0x3ad1, 0x314c, 0x3a4d, 0x33d2, 0x391c, 0x35ef, 0x3828, 0x37f3, 0x36a6, 0x38d1, 0x3539, 0x3979, 0x3410, 0x39f8, 0x3252, 0x3a53, 0x30f0, 0x3a94, 0x2fc9, 0x3abf, 0x2e35, 0x3ada, 0x2d05, 0x3ae8, 0x2c1f, 0x3aed, 0x2ae0, 0x3aea, 0x29d1, 0x3ae1, 0x28ff, 0x3638, 0x38e4, 0x364a, 0x38ce, 0x3699, 0x385e, 0x374e, 0x372c, 0x3839, 0x35a4, 0x38dc, 0x3462, 0x396e, 0x32c4, 0x39de, 0x3134, 0x3a2b, 0x3003, 0x3a59, 0x2e3a, 0x3a6d, 0x2ce1, 0x3a6e, 0x2bba, 0x3a5f, 0x2a33, 0x3a49, 0x290a, 0x3a2d, 0x2826, 0x3a0a, 0x26e8, 0x3894, 0x36d7, 0x3897, 0x36c9, 0x38a3, 0x3675, 0x38bc, 0x35ac, 0x38ee, 0x349c, 0x393e, 0x3332, 0x3997, 0x3186, 0x39e2, 0x3038, 0x3a13, 0x2e75, 0x3a29, 0x2cf5, 0x3a2d, 0x2bac, 0x3a21, 0x29ff, 0x3a04, 0x28bc, 0x39dc, 0x2790, 0x39ad, 0x261a, 0x3978, 0x24fa, 0x39ac, 0x34a8, 0x39ac, 0x34a3, 0x39ae, 0x3480, 0x39ae, 0x3423, 0x39b1, 0x330e, 0x39c2, 0x31a9, 0x39e0, 0x3063, 0x39fc, 0x2eb5, 0x3a0c, 0x2d1d, 0x3a14, 0x2bcf, 0x3a07, 0x29ff, 0x39e9, 0x28a3, 0x39be, 0x273c, 0x3989, 0x25b3, 0x394a, 0x2488, 0x3907, 0x2345, 0x3a77, 0x3223, 0x3a76, 0x321f, 0x3a73, 0x3204, 0x3a6a, 0x31b3, 0x3a58, 0x3114, 0x3a45, 0x303b, 0x3a34, 0x2eb6, 0x3a26, 0x2d31, 0x3a1e, 0x2bef, 0x3a0b, 0x2a0d, 0x39ec, 0x28a1, 0x39c0, 0x271b, 0x3987, 0x2580, 0x3944, 0x2449, 0x38fa, 0x22bd, 0x38ac, 0x2155, 0x3b07, 0x2fca, 0x3b06, 0x2fca, 0x3b00, 0x2fb8, 0x3af4, 0x2f7c, 0x3adb, 0x2eea, 0x3ab4, 0x2e00, 0x3a85, 0x2cec, 0x3a5e, 0x2bc5, 0x3a36, 0x2a00, 0x3a0d, 0x2899, 0x39dc, 0x2707, 0x39a0, 0x2562, 0x395a, 0x2424, 0x390b, 0x2268, 0x38b7, 0x20fd, 0x385f, 0x1fd1, 0x3b69, 0x2cb9, 0x3b68, 0x2cbb, 0x3b62, 0x2cbb, 0x3b56, 0x2cae, 0x3b3b, 0x2c78, 0x3b0d, 0x2c0a, 0x3acf, 0x2ae3, 0x3a92, 0x2998, 0x3a54, 0x2867, 0x3a17, 0x26d0, 0x39d3, 0x253c, 0x3989, 0x2402, 0x3935, 0x2226, 0x38dc, 0x20bd, 0x387d, 0x1f54, 0x381d, 0x1db3, 0x3ba9, 0x296b, 0x3ba8, 0x296f, 0x3ba3, 0x297b, 0x3b98, 0x2987, 0x3b7f, 0x2976, 0x3b4e, 0x2927, 0x3b0e, 0x2895, 0x3ac2, 0x27b7, 0x3a73, 0x263b, 0x3a23, 0x24e7, 0x39d0, 0x239b, 0x3976, 0x21d9, 0x3917, 0x207e, 0x38b2,