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WebGLProgram.js
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WebGLProgram.js
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import { WebGLUniforms } from './WebGLUniforms.js';
import { WebGLShader } from './WebGLShader.js';
import { ShaderChunk } from '../shaders/ShaderChunk.js';
import { NoToneMapping, AddOperation, MixOperation, MultiplyOperation, CubeRefractionMapping, CubeUVReflectionMapping, CubeReflectionMapping, PCFSoftShadowMap, PCFShadowMap, VSMShadowMap, ACESFilmicToneMapping, CineonToneMapping, CustomToneMapping, ReinhardToneMapping, LinearToneMapping, GLSL3, LinearSRGBColorSpace, SRGBColorSpace, LinearDisplayP3ColorSpace, DisplayP3ColorSpace, P3Primaries, Rec709Primaries } from '../../constants.js';
import { ColorManagement } from '../../math/ColorManagement.js';
// From https://www.khronos.org/registry/webgl/extensions/KHR_parallel_shader_compile/
const COMPLETION_STATUS_KHR = 0x91B1;
let programIdCount = 0;
function handleSource( string, errorLine ) {
const lines = string.split( '\n' );
const lines2 = [];
const from = Math.max( errorLine - 6, 0 );
const to = Math.min( errorLine + 6, lines.length );
for ( let i = from; i < to; i ++ ) {
const line = i + 1;
lines2.push( `${line === errorLine ? '>' : ' '} ${line}: ${lines[ i ]}` );
}
return lines2.join( '\n' );
}
function getEncodingComponents( colorSpace ) {
const workingPrimaries = ColorManagement.getPrimaries( ColorManagement.workingColorSpace );
const encodingPrimaries = ColorManagement.getPrimaries( colorSpace );
let gamutMapping;
if ( workingPrimaries === encodingPrimaries ) {
gamutMapping = '';
} else if ( workingPrimaries === P3Primaries && encodingPrimaries === Rec709Primaries ) {
gamutMapping = 'LinearDisplayP3ToLinearSRGB';
} else if ( workingPrimaries === Rec709Primaries && encodingPrimaries === P3Primaries ) {
gamutMapping = 'LinearSRGBToLinearDisplayP3';
}
switch ( colorSpace ) {
case LinearSRGBColorSpace:
case LinearDisplayP3ColorSpace:
return [ gamutMapping, 'LinearTransferOETF' ];
case SRGBColorSpace:
case DisplayP3ColorSpace:
return [ gamutMapping, 'sRGBTransferOETF' ];
default:
console.warn( 'THREE.WebGLProgram: Unsupported color space:', colorSpace );
return [ gamutMapping, 'LinearTransferOETF' ];
}
}
function getShaderErrors( gl, shader, type ) {
const status = gl.getShaderParameter( shader, gl.COMPILE_STATUS );
const errors = gl.getShaderInfoLog( shader ).trim();
if ( status && errors === '' ) return '';
const errorMatches = /ERROR: 0:(\d+)/.exec( errors );
if ( errorMatches ) {
// --enable-privileged-webgl-extension
// console.log( '**' + type + '**', gl.getExtension( 'WEBGL_debug_shaders' ).getTranslatedShaderSource( shader ) );
const errorLine = parseInt( errorMatches[ 1 ] );
return type.toUpperCase() + '\n\n' + errors + '\n\n' + handleSource( gl.getShaderSource( shader ), errorLine );
} else {
return errors;
}
}
function getTexelEncodingFunction( functionName, colorSpace ) {
const components = getEncodingComponents( colorSpace );
return `vec4 ${functionName}( vec4 value ) { return ${components[ 0 ]}( ${components[ 1 ]}( value ) ); }`;
}
function getToneMappingFunction( functionName, toneMapping ) {
let toneMappingName;
switch ( toneMapping ) {
case LinearToneMapping:
toneMappingName = 'Linear';
break;
case ReinhardToneMapping:
toneMappingName = 'Reinhard';
break;
case CineonToneMapping:
toneMappingName = 'OptimizedCineon';
break;
case ACESFilmicToneMapping:
toneMappingName = 'ACESFilmic';
break;
case CustomToneMapping:
toneMappingName = 'Custom';
break;
default:
console.warn( 'THREE.WebGLProgram: Unsupported toneMapping:', toneMapping );
toneMappingName = 'Linear';
}
return 'vec3 ' + functionName + '( vec3 color ) { return ' + toneMappingName + 'ToneMapping( color ); }';
}
function generateExtensions( parameters ) {
const chunks = [
( parameters.extensionDerivatives || !! parameters.envMapCubeUVHeight || parameters.bumpMap || parameters.normalMapTangentSpace || parameters.clearcoatNormalMap || parameters.flatShading || parameters.shaderID === 'physical' ) ? '#extension GL_OES_standard_derivatives : enable' : '',
( parameters.extensionFragDepth || parameters.logarithmicDepthBuffer ) && parameters.rendererExtensionFragDepth ? '#extension GL_EXT_frag_depth : enable' : '',
( parameters.extensionDrawBuffers && parameters.rendererExtensionDrawBuffers ) ? '#extension GL_EXT_draw_buffers : require' : '',
( parameters.extensionShaderTextureLOD || parameters.envMap || parameters.transmission ) && parameters.rendererExtensionShaderTextureLod ? '#extension GL_EXT_shader_texture_lod : enable' : ''
];
return chunks.filter( filterEmptyLine ).join( '\n' );
}
function generateDefines( defines ) {
const chunks = [];
for ( const name in defines ) {
const value = defines[ name ];
if ( value === false ) continue;
chunks.push( '#define ' + name + ' ' + value );
}
return chunks.join( '\n' );
}
function fetchAttributeLocations( gl, program ) {
const attributes = {};
const n = gl.getProgramParameter( program, gl.ACTIVE_ATTRIBUTES );
for ( let i = 0; i < n; i ++ ) {
const info = gl.getActiveAttrib( program, i );
const name = info.name;
let locationSize = 1;
if ( info.type === gl.FLOAT_MAT2 ) locationSize = 2;
if ( info.type === gl.FLOAT_MAT3 ) locationSize = 3;
if ( info.type === gl.FLOAT_MAT4 ) locationSize = 4;
// console.log( 'THREE.WebGLProgram: ACTIVE VERTEX ATTRIBUTE:', name, i );
attributes[ name ] = {
type: info.type,
location: gl.getAttribLocation( program, name ),
locationSize: locationSize
};
}
return attributes;
}
function filterEmptyLine( string ) {
return string !== '';
}
function replaceLightNums( string, parameters ) {
const numSpotLightCoords = parameters.numSpotLightShadows + parameters.numSpotLightMaps - parameters.numSpotLightShadowsWithMaps;
return string
.replace( /NUM_DIR_LIGHTS/g, parameters.numDirLights )
.replace( /NUM_SPOT_LIGHTS/g, parameters.numSpotLights )
.replace( /NUM_SPOT_LIGHT_MAPS/g, parameters.numSpotLightMaps )
.replace( /NUM_SPOT_LIGHT_COORDS/g, numSpotLightCoords )
.replace( /NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights )
.replace( /NUM_POINT_LIGHTS/g, parameters.numPointLights )
.replace( /NUM_HEMI_LIGHTS/g, parameters.numHemiLights )
.replace( /NUM_DIR_LIGHT_SHADOWS/g, parameters.numDirLightShadows )
.replace( /NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS/g, parameters.numSpotLightShadowsWithMaps )
.replace( /NUM_SPOT_LIGHT_SHADOWS/g, parameters.numSpotLightShadows )
.replace( /NUM_POINT_LIGHT_SHADOWS/g, parameters.numPointLightShadows );
}
function replaceClippingPlaneNums( string, parameters ) {
return string
.replace( /NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes )
.replace( /UNION_CLIPPING_PLANES/g, ( parameters.numClippingPlanes - parameters.numClipIntersection ) );
}
// Resolve Includes
const includePattern = /^[ \t]*#include +<([\w\d./]+)>/gm;
function resolveIncludes( string ) {
return string.replace( includePattern, includeReplacer );
}
const shaderChunkMap = new Map( [
[ 'encodings_fragment', 'colorspace_fragment' ], // @deprecated, r154
[ 'encodings_pars_fragment', 'colorspace_pars_fragment' ], // @deprecated, r154
[ 'output_fragment', 'opaque_fragment' ], // @deprecated, r154
] );
function includeReplacer( match, include ) {
let string = ShaderChunk[ include ];
if ( string === undefined ) {
const newInclude = shaderChunkMap.get( include );
if ( newInclude !== undefined ) {
string = ShaderChunk[ newInclude ];
console.warn( 'THREE.WebGLRenderer: Shader chunk "%s" has been deprecated. Use "%s" instead.', include, newInclude );
} else {
throw new Error( 'Can not resolve #include <' + include + '>' );
}
}
return resolveIncludes( string );
}
// Unroll Loops
const unrollLoopPattern = /#pragma unroll_loop_start\s+for\s*\(\s*int\s+i\s*=\s*(\d+)\s*;\s*i\s*<\s*(\d+)\s*;\s*i\s*\+\+\s*\)\s*{([\s\S]+?)}\s+#pragma unroll_loop_end/g;
function unrollLoops( string ) {
return string.replace( unrollLoopPattern, loopReplacer );
}
function loopReplacer( match, start, end, snippet ) {
let string = '';
for ( let i = parseInt( start ); i < parseInt( end ); i ++ ) {
string += snippet
.replace( /\[\s*i\s*\]/g, '[ ' + i + ' ]' )
.replace( /UNROLLED_LOOP_INDEX/g, i );
}
return string;
}
//
function generatePrecision( parameters ) {
let precisionstring = 'precision ' + parameters.precision + ' float;\nprecision ' + parameters.precision + ' int;';
if ( parameters.precision === 'highp' ) {
precisionstring += '\n#define HIGH_PRECISION';
} else if ( parameters.precision === 'mediump' ) {
precisionstring += '\n#define MEDIUM_PRECISION';
} else if ( parameters.precision === 'lowp' ) {
precisionstring += '\n#define LOW_PRECISION';
}
return precisionstring;
}
function generateShadowMapTypeDefine( parameters ) {
let shadowMapTypeDefine = 'SHADOWMAP_TYPE_BASIC';
if ( parameters.shadowMapType === PCFShadowMap ) {
shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF';
} else if ( parameters.shadowMapType === PCFSoftShadowMap ) {
shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF_SOFT';
} else if ( parameters.shadowMapType === VSMShadowMap ) {
shadowMapTypeDefine = 'SHADOWMAP_TYPE_VSM';
}
return shadowMapTypeDefine;
}
function generateEnvMapTypeDefine( parameters ) {
let envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
if ( parameters.envMap ) {
switch ( parameters.envMapMode ) {
case CubeReflectionMapping:
case CubeRefractionMapping:
envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
break;
case CubeUVReflectionMapping:
envMapTypeDefine = 'ENVMAP_TYPE_CUBE_UV';
break;
}
}
return envMapTypeDefine;
}
function generateEnvMapModeDefine( parameters ) {
let envMapModeDefine = 'ENVMAP_MODE_REFLECTION';
if ( parameters.envMap ) {
switch ( parameters.envMapMode ) {
case CubeRefractionMapping:
envMapModeDefine = 'ENVMAP_MODE_REFRACTION';
break;
}
}
return envMapModeDefine;
}
function generateEnvMapBlendingDefine( parameters ) {
let envMapBlendingDefine = 'ENVMAP_BLENDING_NONE';
if ( parameters.envMap ) {
switch ( parameters.combine ) {
case MultiplyOperation:
envMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';
break;
case MixOperation:
envMapBlendingDefine = 'ENVMAP_BLENDING_MIX';
break;
case AddOperation:
envMapBlendingDefine = 'ENVMAP_BLENDING_ADD';
break;
}
}
return envMapBlendingDefine;
}
function generateCubeUVSize( parameters ) {
const imageHeight = parameters.envMapCubeUVHeight;
if ( imageHeight === null ) return null;
const maxMip = Math.log2( imageHeight ) - 2;
const texelHeight = 1.0 / imageHeight;
const texelWidth = 1.0 / ( 3 * Math.max( Math.pow( 2, maxMip ), 7 * 16 ) );
return { texelWidth, texelHeight, maxMip };
}
function WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {
// TODO Send this event to Three.js DevTools
// console.log( 'WebGLProgram', cacheKey );
const gl = renderer.getContext();
const defines = parameters.defines;
let vertexShader = parameters.vertexShader;
let fragmentShader = parameters.fragmentShader;
const shadowMapTypeDefine = generateShadowMapTypeDefine( parameters );
const envMapTypeDefine = generateEnvMapTypeDefine( parameters );
const envMapModeDefine = generateEnvMapModeDefine( parameters );
const envMapBlendingDefine = generateEnvMapBlendingDefine( parameters );
const envMapCubeUVSize = generateCubeUVSize( parameters );
const customExtensions = parameters.isWebGL2 ? '' : generateExtensions( parameters );
const customDefines = generateDefines( defines );
const program = gl.createProgram();
let prefixVertex, prefixFragment;
let versionString = parameters.glslVersion ? '#version ' + parameters.glslVersion + '\n' : '';
if ( parameters.isRawShaderMaterial ) {
prefixVertex = [
'#define SHADER_TYPE ' + parameters.shaderType,
'#define SHADER_NAME ' + parameters.shaderName,
customDefines
].filter( filterEmptyLine ).join( '\n' );
if ( prefixVertex.length > 0 ) {
prefixVertex += '\n';
}
prefixFragment = [
customExtensions,
'#define SHADER_TYPE ' + parameters.shaderType,
'#define SHADER_NAME ' + parameters.shaderName,
customDefines
].filter( filterEmptyLine ).join( '\n' );
if ( prefixFragment.length > 0 ) {
prefixFragment += '\n';
}
} else {
prefixVertex = [
generatePrecision( parameters ),
'#define SHADER_TYPE ' + parameters.shaderType,
'#define SHADER_NAME ' + parameters.shaderName,
customDefines,
parameters.instancing ? '#define USE_INSTANCING' : '',
parameters.instancingColor ? '#define USE_INSTANCING_COLOR' : '',
parameters.useFog && parameters.fog ? '#define USE_FOG' : '',
parameters.useFog && parameters.fogExp2 ? '#define FOG_EXP2' : '',
parameters.map ? '#define USE_MAP' : '',
parameters.envMap ? '#define USE_ENVMAP' : '',
parameters.envMap ? '#define ' + envMapModeDefine : '',
parameters.lightMap ? '#define USE_LIGHTMAP' : '',
parameters.aoMap ? '#define USE_AOMAP' : '',
parameters.bumpMap ? '#define USE_BUMPMAP' : '',
parameters.normalMap ? '#define USE_NORMALMAP' : '',
parameters.normalMapObjectSpace ? '#define USE_NORMALMAP_OBJECTSPACE' : '',
parameters.normalMapTangentSpace ? '#define USE_NORMALMAP_TANGENTSPACE' : '',
parameters.displacementMap ? '#define USE_DISPLACEMENTMAP' : '',
parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',
parameters.anisotropy ? '#define USE_ANISOTROPY' : '',
parameters.anisotropyMap ? '#define USE_ANISOTROPYMAP' : '',
parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',
parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',
parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',
parameters.iridescenceMap ? '#define USE_IRIDESCENCEMAP' : '',
parameters.iridescenceThicknessMap ? '#define USE_IRIDESCENCE_THICKNESSMAP' : '',
parameters.specularMap ? '#define USE_SPECULARMAP' : '',
parameters.specularColorMap ? '#define USE_SPECULAR_COLORMAP' : '',
parameters.specularIntensityMap ? '#define USE_SPECULAR_INTENSITYMAP' : '',
parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',
parameters.alphaMap ? '#define USE_ALPHAMAP' : '',
parameters.alphaHash ? '#define USE_ALPHAHASH' : '',
parameters.transmission ? '#define USE_TRANSMISSION' : '',
parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',
parameters.thicknessMap ? '#define USE_THICKNESSMAP' : '',
parameters.sheenColorMap ? '#define USE_SHEEN_COLORMAP' : '',
parameters.sheenRoughnessMap ? '#define USE_SHEEN_ROUGHNESSMAP' : '',
//
parameters.mapUv ? '#define MAP_UV ' + parameters.mapUv : '',
parameters.alphaMapUv ? '#define ALPHAMAP_UV ' + parameters.alphaMapUv : '',
parameters.lightMapUv ? '#define LIGHTMAP_UV ' + parameters.lightMapUv : '',
parameters.aoMapUv ? '#define AOMAP_UV ' + parameters.aoMapUv : '',
parameters.emissiveMapUv ? '#define EMISSIVEMAP_UV ' + parameters.emissiveMapUv : '',
parameters.bumpMapUv ? '#define BUMPMAP_UV ' + parameters.bumpMapUv : '',
parameters.normalMapUv ? '#define NORMALMAP_UV ' + parameters.normalMapUv : '',
parameters.displacementMapUv ? '#define DISPLACEMENTMAP_UV ' + parameters.displacementMapUv : '',
parameters.metalnessMapUv ? '#define METALNESSMAP_UV ' + parameters.metalnessMapUv : '',
parameters.roughnessMapUv ? '#define ROUGHNESSMAP_UV ' + parameters.roughnessMapUv : '',
parameters.anisotropyMapUv ? '#define ANISOTROPYMAP_UV ' + parameters.anisotropyMapUv : '',
parameters.clearcoatMapUv ? '#define CLEARCOATMAP_UV ' + parameters.clearcoatMapUv : '',
parameters.clearcoatNormalMapUv ? '#define CLEARCOAT_NORMALMAP_UV ' + parameters.clearcoatNormalMapUv : '',
parameters.clearcoatRoughnessMapUv ? '#define CLEARCOAT_ROUGHNESSMAP_UV ' + parameters.clearcoatRoughnessMapUv : '',
parameters.iridescenceMapUv ? '#define IRIDESCENCEMAP_UV ' + parameters.iridescenceMapUv : '',
parameters.iridescenceThicknessMapUv ? '#define IRIDESCENCE_THICKNESSMAP_UV ' + parameters.iridescenceThicknessMapUv : '',
parameters.sheenColorMapUv ? '#define SHEEN_COLORMAP_UV ' + parameters.sheenColorMapUv : '',
parameters.sheenRoughnessMapUv ? '#define SHEEN_ROUGHNESSMAP_UV ' + parameters.sheenRoughnessMapUv : '',
parameters.specularMapUv ? '#define SPECULARMAP_UV ' + parameters.specularMapUv : '',
parameters.specularColorMapUv ? '#define SPECULAR_COLORMAP_UV ' + parameters.specularColorMapUv : '',
parameters.specularIntensityMapUv ? '#define SPECULAR_INTENSITYMAP_UV ' + parameters.specularIntensityMapUv : '',
parameters.transmissionMapUv ? '#define TRANSMISSIONMAP_UV ' + parameters.transmissionMapUv : '',
parameters.thicknessMapUv ? '#define THICKNESSMAP_UV ' + parameters.thicknessMapUv : '',
//
parameters.vertexTangents && parameters.flatShading === false ? '#define USE_TANGENT' : '',
parameters.vertexColors ? '#define USE_COLOR' : '',
parameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '',
parameters.vertexUv1s ? '#define USE_UV1' : '',
parameters.vertexUv2s ? '#define USE_UV2' : '',
parameters.vertexUv3s ? '#define USE_UV3' : '',
parameters.pointsUvs ? '#define USE_POINTS_UV' : '',
parameters.flatShading ? '#define FLAT_SHADED' : '',
parameters.skinning ? '#define USE_SKINNING' : '',
parameters.morphTargets ? '#define USE_MORPHTARGETS' : '',
parameters.morphNormals && parameters.flatShading === false ? '#define USE_MORPHNORMALS' : '',
( parameters.morphColors && parameters.isWebGL2 ) ? '#define USE_MORPHCOLORS' : '',
( parameters.morphTargetsCount > 0 && parameters.isWebGL2 ) ? '#define MORPHTARGETS_TEXTURE' : '',
( parameters.morphTargetsCount > 0 && parameters.isWebGL2 ) ? '#define MORPHTARGETS_TEXTURE_STRIDE ' + parameters.morphTextureStride : '',
( parameters.morphTargetsCount > 0 && parameters.isWebGL2 ) ? '#define MORPHTARGETS_COUNT ' + parameters.morphTargetsCount : '',
parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
parameters.flipSided ? '#define FLIP_SIDED' : '',
parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',
parameters.sizeAttenuation ? '#define USE_SIZEATTENUATION' : '',
parameters.numLightProbes > 0 ? '#define USE_LIGHT_PROBES' : '',
parameters.useLegacyLights ? '#define LEGACY_LIGHTS' : '',
parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',
'uniform mat4 modelMatrix;',
'uniform mat4 modelViewMatrix;',
'uniform mat4 projectionMatrix;',
'uniform mat4 viewMatrix;',
'uniform mat3 normalMatrix;',
'uniform vec3 cameraPosition;',
'uniform bool isOrthographic;',
'#ifdef USE_INSTANCING',
' attribute mat4 instanceMatrix;',
'#endif',
'#ifdef USE_INSTANCING_COLOR',
' attribute vec3 instanceColor;',
'#endif',
'attribute vec3 position;',
'attribute vec3 normal;',
'attribute vec2 uv;',
'#ifdef USE_UV1',
' attribute vec2 uv1;',
'#endif',
'#ifdef USE_UV2',
' attribute vec2 uv2;',
'#endif',
'#ifdef USE_UV3',
' attribute vec2 uv3;',
'#endif',
'#ifdef USE_TANGENT',
' attribute vec4 tangent;',
'#endif',
'#if defined( USE_COLOR_ALPHA )',
' attribute vec4 color;',
'#elif defined( USE_COLOR )',
' attribute vec3 color;',
'#endif',
'#if ( defined( USE_MORPHTARGETS ) && ! defined( MORPHTARGETS_TEXTURE ) )',
' attribute vec3 morphTarget0;',
' attribute vec3 morphTarget1;',
' attribute vec3 morphTarget2;',
' attribute vec3 morphTarget3;',
' #ifdef USE_MORPHNORMALS',
' attribute vec3 morphNormal0;',
' attribute vec3 morphNormal1;',
' attribute vec3 morphNormal2;',
' attribute vec3 morphNormal3;',
' #else',
' attribute vec3 morphTarget4;',
' attribute vec3 morphTarget5;',
' attribute vec3 morphTarget6;',
' attribute vec3 morphTarget7;',
' #endif',
'#endif',
'#ifdef USE_SKINNING',
' attribute vec4 skinIndex;',
' attribute vec4 skinWeight;',
'#endif',
'\n'
].filter( filterEmptyLine ).join( '\n' );
prefixFragment = [
customExtensions,
generatePrecision( parameters ),
'#define SHADER_TYPE ' + parameters.shaderType,
'#define SHADER_NAME ' + parameters.shaderName,
customDefines,
parameters.useFog && parameters.fog ? '#define USE_FOG' : '',
parameters.useFog && parameters.fogExp2 ? '#define FOG_EXP2' : '',
parameters.map ? '#define USE_MAP' : '',
parameters.matcap ? '#define USE_MATCAP' : '',
parameters.envMap ? '#define USE_ENVMAP' : '',
parameters.envMap ? '#define ' + envMapTypeDefine : '',
parameters.envMap ? '#define ' + envMapModeDefine : '',
parameters.envMap ? '#define ' + envMapBlendingDefine : '',
envMapCubeUVSize ? '#define CUBEUV_TEXEL_WIDTH ' + envMapCubeUVSize.texelWidth : '',
envMapCubeUVSize ? '#define CUBEUV_TEXEL_HEIGHT ' + envMapCubeUVSize.texelHeight : '',
envMapCubeUVSize ? '#define CUBEUV_MAX_MIP ' + envMapCubeUVSize.maxMip + '.0' : '',
parameters.lightMap ? '#define USE_LIGHTMAP' : '',
parameters.aoMap ? '#define USE_AOMAP' : '',
parameters.bumpMap ? '#define USE_BUMPMAP' : '',
parameters.normalMap ? '#define USE_NORMALMAP' : '',
parameters.normalMapObjectSpace ? '#define USE_NORMALMAP_OBJECTSPACE' : '',
parameters.normalMapTangentSpace ? '#define USE_NORMALMAP_TANGENTSPACE' : '',
parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',
parameters.anisotropy ? '#define USE_ANISOTROPY' : '',
parameters.anisotropyMap ? '#define USE_ANISOTROPYMAP' : '',
parameters.clearcoat ? '#define USE_CLEARCOAT' : '',
parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',
parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',
parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',
parameters.iridescence ? '#define USE_IRIDESCENCE' : '',
parameters.iridescenceMap ? '#define USE_IRIDESCENCEMAP' : '',
parameters.iridescenceThicknessMap ? '#define USE_IRIDESCENCE_THICKNESSMAP' : '',
parameters.specularMap ? '#define USE_SPECULARMAP' : '',
parameters.specularColorMap ? '#define USE_SPECULAR_COLORMAP' : '',
parameters.specularIntensityMap ? '#define USE_SPECULAR_INTENSITYMAP' : '',
parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',
parameters.alphaMap ? '#define USE_ALPHAMAP' : '',
parameters.alphaTest ? '#define USE_ALPHATEST' : '',
parameters.alphaHash ? '#define USE_ALPHAHASH' : '',
parameters.sheen ? '#define USE_SHEEN' : '',
parameters.sheenColorMap ? '#define USE_SHEEN_COLORMAP' : '',
parameters.sheenRoughnessMap ? '#define USE_SHEEN_ROUGHNESSMAP' : '',
parameters.transmission ? '#define USE_TRANSMISSION' : '',
parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',
parameters.thicknessMap ? '#define USE_THICKNESSMAP' : '',
parameters.vertexTangents && parameters.flatShading === false ? '#define USE_TANGENT' : '',
parameters.vertexColors || parameters.instancingColor ? '#define USE_COLOR' : '',
parameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '',
parameters.vertexUv1s ? '#define USE_UV1' : '',
parameters.vertexUv2s ? '#define USE_UV2' : '',
parameters.vertexUv3s ? '#define USE_UV3' : '',
parameters.pointsUvs ? '#define USE_POINTS_UV' : '',
parameters.gradientMap ? '#define USE_GRADIENTMAP' : '',
parameters.flatShading ? '#define FLAT_SHADED' : '',
parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
parameters.flipSided ? '#define FLIP_SIDED' : '',
parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',
parameters.premultipliedAlpha ? '#define PREMULTIPLIED_ALPHA' : '',
parameters.numLightProbes > 0 ? '#define USE_LIGHT_PROBES' : '',
parameters.useLegacyLights ? '#define LEGACY_LIGHTS' : '',
parameters.decodeVideoTexture ? '#define DECODE_VIDEO_TEXTURE' : '',
parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',
'uniform mat4 viewMatrix;',
'uniform vec3 cameraPosition;',
'uniform bool isOrthographic;',
( parameters.toneMapping !== NoToneMapping ) ? '#define TONE_MAPPING' : '',
( parameters.toneMapping !== NoToneMapping ) ? ShaderChunk[ 'tonemapping_pars_fragment' ] : '', // this code is required here because it is used by the toneMapping() function defined below
( parameters.toneMapping !== NoToneMapping ) ? getToneMappingFunction( 'toneMapping', parameters.toneMapping ) : '',
parameters.dithering ? '#define DITHERING' : '',
parameters.opaque ? '#define OPAQUE' : '',
ShaderChunk[ 'colorspace_pars_fragment' ], // this code is required here because it is used by the various encoding/decoding function defined below
getTexelEncodingFunction( 'linearToOutputTexel', parameters.outputColorSpace ),
parameters.useDepthPacking ? '#define DEPTH_PACKING ' + parameters.depthPacking : '',
'\n'
].filter( filterEmptyLine ).join( '\n' );
}
vertexShader = resolveIncludes( vertexShader );
vertexShader = replaceLightNums( vertexShader, parameters );
vertexShader = replaceClippingPlaneNums( vertexShader, parameters );
fragmentShader = resolveIncludes( fragmentShader );
fragmentShader = replaceLightNums( fragmentShader, parameters );
fragmentShader = replaceClippingPlaneNums( fragmentShader, parameters );
vertexShader = unrollLoops( vertexShader );
fragmentShader = unrollLoops( fragmentShader );
if ( parameters.isWebGL2 && parameters.isRawShaderMaterial !== true ) {
// GLSL 3.0 conversion for built-in materials and ShaderMaterial
versionString = '#version 300 es\n';
prefixVertex = [
'precision mediump sampler2DArray;',
'#define attribute in',
'#define varying out',
'#define texture2D texture'
].join( '\n' ) + '\n' + prefixVertex;
prefixFragment = [
'precision mediump sampler2DArray;',
'#define varying in',
( parameters.glslVersion === GLSL3 ) ? '' : 'layout(location = 0) out highp vec4 pc_fragColor;',
( parameters.glslVersion === GLSL3 ) ? '' : '#define gl_FragColor pc_fragColor',
'#define gl_FragDepthEXT gl_FragDepth',
'#define texture2D texture',
'#define textureCube texture',
'#define texture2DProj textureProj',
'#define texture2DLodEXT textureLod',
'#define texture2DProjLodEXT textureProjLod',
'#define textureCubeLodEXT textureLod',
'#define texture2DGradEXT textureGrad',
'#define texture2DProjGradEXT textureProjGrad',
'#define textureCubeGradEXT textureGrad'
].join( '\n' ) + '\n' + prefixFragment;
}
const vertexGlsl = versionString + prefixVertex + vertexShader;
const fragmentGlsl = versionString + prefixFragment + fragmentShader;
// console.log( '*VERTEX*', vertexGlsl );
// console.log( '*FRAGMENT*', fragmentGlsl );
const glVertexShader = WebGLShader( gl, gl.VERTEX_SHADER, vertexGlsl );
const glFragmentShader = WebGLShader( gl, gl.FRAGMENT_SHADER, fragmentGlsl );
gl.attachShader( program, glVertexShader );
gl.attachShader( program, glFragmentShader );
// Force a particular attribute to index 0.
if ( parameters.index0AttributeName !== undefined ) {
gl.bindAttribLocation( program, 0, parameters.index0AttributeName );
} else if ( parameters.morphTargets === true ) {
// programs with morphTargets displace position out of attribute 0
gl.bindAttribLocation( program, 0, 'position' );
}
gl.linkProgram( program );
function onFirstUse( self ) {
// check for link errors
if ( renderer.debug.checkShaderErrors ) {
const programLog = gl.getProgramInfoLog( program ).trim();
const vertexLog = gl.getShaderInfoLog( glVertexShader ).trim();
const fragmentLog = gl.getShaderInfoLog( glFragmentShader ).trim();
let runnable = true;
let haveDiagnostics = true;
if ( gl.getProgramParameter( program, gl.LINK_STATUS ) === false ) {
runnable = false;
if ( typeof renderer.debug.onShaderError === 'function' ) {
renderer.debug.onShaderError( gl, program, glVertexShader, glFragmentShader );
} else {
// default error reporting
const vertexErrors = getShaderErrors( gl, glVertexShader, 'vertex' );
const fragmentErrors = getShaderErrors( gl, glFragmentShader, 'fragment' );
console.error(
'THREE.WebGLProgram: Shader Error ' + gl.getError() + ' - ' +
'VALIDATE_STATUS ' + gl.getProgramParameter( program, gl.VALIDATE_STATUS ) + '\n\n' +
'Program Info Log: ' + programLog + '\n' +
vertexErrors + '\n' +
fragmentErrors
);
}
} else if ( programLog !== '' ) {
console.warn( 'THREE.WebGLProgram: Program Info Log:', programLog );
} else if ( vertexLog === '' || fragmentLog === '' ) {
haveDiagnostics = false;
}
if ( haveDiagnostics ) {
self.diagnostics = {
runnable: runnable,
programLog: programLog,
vertexShader: {
log: vertexLog,
prefix: prefixVertex
},
fragmentShader: {
log: fragmentLog,
prefix: prefixFragment
}
};
}
}
// Clean up
// Crashes in iOS9 and iOS10. #18402
// gl.detachShader( program, glVertexShader );
// gl.detachShader( program, glFragmentShader );
gl.deleteShader( glVertexShader );
gl.deleteShader( glFragmentShader );
cachedUniforms = new WebGLUniforms( gl, program );
cachedAttributes = fetchAttributeLocations( gl, program );
}
// set up caching for uniform locations
let cachedUniforms;
this.getUniforms = function () {
if ( cachedUniforms === undefined ) {
// Populates cachedUniforms and cachedAttributes
onFirstUse( this );
}
return cachedUniforms;