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standard.js
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1120 lines (979 loc) · 46 KB
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var _oldChunkWarn = function(oldName, newName) {
// #ifdef DEBUG
console.warn("Shader chunk " + oldName + " is deprecated - override " + newName + " instead");
// #endif
}
var _oldChunkFloat = function(s, o, p) {
_oldChunkWarn(p, o);
return "\n#ifdef MAPFLOAT\n" + s + "\n#else\n" + pc.shaderChunks[o] + "\n#endif\n";
}
var _oldChunkColor = function(s, o, p) {
_oldChunkWarn(p, o);
return "\n#ifdef MAPCOLOR\n" + s + "\n#else\n" + pc.shaderChunks[o] + "\n#endif\n";
}
var _oldChunkTex = function(s, o, p) {
_oldChunkWarn(p, o);
return "\n#ifdef MAPTEXTURE\n" + s + "\n#else\n" + pc.shaderChunks[o] + "\n#endif\n";
}
var _oldChunkTexColor = function(s, o, p) {
_oldChunkWarn(p, o);
return "#undef MAPTEXTURECOLOR\n#ifdef MAPTEXTURE\n#ifdef MAPCOLOR\n#define MAPTEXTURECOLOR\n#endif\n#endif\n" +
"#ifdef MAPTEXTURECOLOR\n" + s + "\n#else\n" + pc.shaderChunks[o] + "\n#endif\n";
}
var _oldChunkTexFloat = function(s, o, p) {
_oldChunkWarn(p, o);
return "#undef MAPTEXTUREFLOAT\n#ifdef MAPTEXTURE\n#ifdef MAPFLOAT\n#define MAPTEXTUREFLOAT\n#endif\n#endif\n" +
"#ifdef MAPTEXTUREFLOAT\n" + s + "\n#else\n" + pc.shaderChunks[o] + "\n#endif\n";
}
var _oldChunkVert = function(s, o, p) {
_oldChunkWarn(p, o);
return "\n#ifdef MAPVERTEX\n" + s + "\n#else\n" + pc.shaderChunks[o] + "\n#endif\n";
}
var _oldChunkVertColor = function(s, o, p) {
_oldChunkWarn(p, o);
return "#undef MAPVERTEXCOLOR\n#ifdef MAPVERTEX\n#ifdef MAPCOLOR\n#define MAPVERTEXCOLOR\n#endif\n#endif\n" +
"#ifdef MAPVERTEXCOLOR\n" + s + "\n#else\n" + pc.shaderChunks[o] + "\n#endif\n";
}
var _oldChunkVertFloat = function(s, o, p) {
_oldChunkWarn(p, o);
return "#undef MAPVERTEXFLOAT\n#ifdef MAPVERTEX\n#ifdef MAPFLOAT\n#define MAPVERTEXFLOAT\n#endif\n#endif\n" +
"#ifdef MAPVERTEXFLOAT\n" + s + "\n#else\n" + pc.shaderChunks[o] + "\n#endif\n";
}
pc.programlib.standard = {
_oldChunkToNew: {
aoTexPS : {n:"aoPS", f:_oldChunkTex},
aoVertPS : {n:"aoPS", f:_oldChunkVert},
diffuseConstPS : {n:"diffusePS", f:_oldChunkColor},
diffuseTexPS : {n:"diffusePS", f:_oldChunkTex},
diffuseTexConstPS : {n:"diffusePS", f:_oldChunkTexColor},
diffuseVertPS : {n:"diffusePS", f:_oldChunkVert},
diffuseVertConstPS : {n:"diffusePS", f:_oldChunkVertColor},
emissiveConstPS : {n:"emissivePS", f:_oldChunkColor},
emissiveTexPS : {n:"emissivePS", f:_oldChunkTex},
emissiveTexConstPS : {n:"emissivePS", f:_oldChunkTexColor},
emissiveTexConstFloatPS : {n:"emissivePS", f:_oldChunkTexFloat},
emissiveVertPS : {n:"emissivePS", f:_oldChunkVert},
emissiveVertConstPS : {n:"emissivePS", f:_oldChunkVertColor},
emissiveVertConstFloatPS : {n:"emissivePS", f:_oldChunkVertFloat},
glossConstPS : {n:"glossPS", f:_oldChunkFloat},
glossTexPS : {n:"glossPS", f:_oldChunkTex},
glossTexConstPS : {n:"glossPS", f:_oldChunkTexFloat},
glossVertPS : {n:"glossPS", f:_oldChunkVert},
glossVertConstPS : {n:"glossPS", f:_oldChunkVertFloat},
metalnessConstPS : {n:"metalnessPS", f:_oldChunkFloat},
metalnessTexPS : {n:"metalnessPS", f:_oldChunkTex},
metalnessTexConstPS : {n:"metalnessPS", f:_oldChunkTexFloat},
metalnessVertPS : {n:"metalnessPS", f:_oldChunkVert},
metalnessVertConstPS : {n:"metalnessPS", f:_oldChunkVertFloat},
opacityConstPS : {n:"opacityPS", f:_oldChunkFloat},
opacityTexPS : {n:"opacityPS", f:_oldChunkTex},
opacityTexConstPS : {n:"opacityPS", f:_oldChunkTexFloat},
opacityVertPS : {n:"opacityPS", f:_oldChunkVert},
opacityVertConstPS : {n:"opacityPS", f:_oldChunkVertFloat},
specularConstPS : {n:"specularPS", f:_oldChunkColor},
specularTexPS : {n:"specularPS", f:_oldChunkTex},
specularTexConstPS : {n:"specularPS", f:_oldChunkTexColor},
specularVertPS : {n:"specularPS", f:_oldChunkVert},
specularVertConstPS : {n:"specularPS", f:_oldChunkVertColor}
},
hashCode: function(str){
var hash = 0;
if (str.length === 0) return hash;
for (var i = 0; i < str.length; i++) {
var char = str.charCodeAt(i);
hash = ((hash<<5)-hash)+char;
hash = hash & hash;
}
return hash;
},
generateKey: function (device, options) {
var props = [];
var key = "standard";
var light;
for (var prop in options) {
if (options.hasOwnProperty(prop)) {
if (prop === "chunks") {
for (var p in options[prop]) {
if (options[prop].hasOwnProperty(p)) {
props.push(p + options.chunks[p]);
}
}
} else {
if (options[prop]) props.push(prop);
}
}
}
props.sort();
for (prop in props) {
if (props.hasOwnProperty(prop)) {
key += props[prop] + options[props[prop]];
}
}
if (options.lights) {
for (var i=0; i<options.lights.length; i++) {
light = options.lights[i];
key += light.key;
}
}
return this.hashCode(key);
},
_correctChannel: function(p, chan) {
if (pc._matTex2D[p] > 0) {
if (pc._matTex2D[p] < chan.length) {
return chan.substring(0, pc._matTex2D[p]);
} else if (pc._matTex2D[p] > chan.length) {
var str = chan;
var chr = str.charAt(str.length - 1);
var addLen = pc._matTex2D[p] - str.length;
for (var i = 0; i < addLen; i++) str += chr;
return str;
}
return chan;
}
},
_setMapTransform: function (codes, name, id, uv) {
codes[0] += "uniform vec4 texture_"+name+"MapTransform;\n";
var checkId = id + uv * 100;
if (!codes[3][checkId]) {
codes[1] += "varying vec2 vUV"+uv+"_"+id+";\n";
codes[2] += " vUV"+uv+"_"+id+" = uv"+uv+" * texture_"+name+"MapTransform.xy + texture_"+name+"MapTransform.zw;\n";
codes[3][checkId] = true;
}
return codes;
},
_uvSource: function(id, uv) {
return (id === 0) ? "vUv" + uv : ("vUV"+uv+"_" + id);
},
_addMapDef: function(name, enabled) {
var s = "\n#undef " + name + "\n";
if (enabled) s += " #define " + name + "\n";
return s;
},
_addMapDefs: function(float, color, vertex, map) {
var s = "";
s += this._addMapDef("MAPFLOAT", float);
s += this._addMapDef("MAPCOLOR", color);
s += this._addMapDef("MAPVERTEX", vertex);
s += this._addMapDef("MAPTEXTURE", map);
return s;
},
_addMap: function(p, options, chunks, uvOffset, subCode, format) {
var mname = p + "Map";
var tint = options[p + "Tint"]
var vert = options[p + "VertexColor"];
var tex = options[mname];
if (!subCode) subCode = chunks[p + "PS"];
if (tex) {
var uname = mname + "Uv";
var tname = mname + "Transform";
var cname = mname + "Channel";
var uv = this._uvSource(options[tname], options[uname]) + uvOffset;
subCode = subCode.replace(/\$UV/g, uv).replace(/\$CH/g, options[cname]);
if (format !== undefined) {
var fmt = format === 0 ? "texture2DSRGB" : (format === 1? "texture2DRGBM" : "texture2D");
subCode = subCode.replace(/\$texture2DSAMPLE/g, fmt);
}
}
if (vert) {
var vcname = p + "VertexColorChannel";
subCode = subCode.replace(/\$VC/g, options[vcname]);
}
subCode = this._addMapDefs(tint === 1, tint === 3, vert, tex) + subCode;
return subCode.replace(/\$/g, "");
},
_nonPointShadowMapProjection: function(device, light, shadowCoordArgs) {
if (!light._normalOffsetBias || light._isVsm) {
if (light._type === pc.LIGHTTYPE_SPOT) {
if (light._isPcf && (device.webgl2 || device.extStandardDerivatives)) {
return " getShadowCoordPerspZbuffer" + shadowCoordArgs;
} else {
return " getShadowCoordPersp" + shadowCoordArgs;
}
} else {
return " getShadowCoordOrtho" + shadowCoordArgs;
}
} else {
if (light._type === pc.LIGHTTYPE_SPOT) {
if (light._isPcf && (device.webgl2 || device.extStandardDerivatives)) {
return " getShadowCoordPerspZbufferNormalOffset" + shadowCoordArgs;
} else {
return " getShadowCoordPerspNormalOffset" + shadowCoordArgs;
}
} else {
return " getShadowCoordOrthoNormalOffset" + shadowCoordArgs;
}
}
},
_addVaryingIfNeeded: function(code, type, name) {
return code.indexOf(name)>=0? ("varying " + type + " " + name + ";\n") : "";
},
createShaderDefinition: function (device, options) {
var i, p;
var lighting = options.lights.length > 0;
if (options.dirLightMap) {
lighting = true;
options.useSpecular = true;
}
if (options.shadingModel === pc.SPECULAR_PHONG) {
options.fresnelModel = 0;
options.specularAA = false;
options.prefilteredCubemap = false;
options.dpAtlas = false;
options.ambientSH = false;
} else {
options.fresnelModel = (options.fresnelModel === 0) ? pc.FRESNEL_SCHLICK : options.fresnelModel;
}
var cubemapReflection = options.cubeMap || (options.prefilteredCubemap && options.useSpecular) && (!options.sphereMap && !options.dpAtlas);
var reflections = options.sphereMap || cubemapReflection || options.dpAtlas;
var useTangents = pc.precalculatedTangents;
var useTexCubeLod = options.useTexCubeLod;
if (options.cubeMap) options.sphereMap = null; // cubeMaps have higher priority
if (options.dpAtlas) options.prefilteredCubemap = null; // dp has even higher priority
if (!options.useSpecular) options.specularMap = options.glossMap = null;
var needsNormal = lighting || reflections || options.ambientSH || options.prefilteredCubemap || options.heightMap;
this.options = options;
////////////////////////////
// GENERATE VERTEX SHADER //
////////////////////////////
var code = '';
var codeBody = '';
var varyings = ""; // additional varyings for map transforms
var chunks = pc.shaderChunks;
var lightType;
var shadowCoordArgs;
if (options.chunks) {
var customChunks = {};
var newP;
for (p in chunks) {
if (chunks.hasOwnProperty(p)) {
if (!options.chunks[p]) {
customChunks[p] = chunks[p];
} else {
customChunks[p] = options.chunks[p];
if (!needsNormal) {
// user might use vertex normal/tangent in shader
// but those aren't used when lighting/reflections are off
// so this is a workaround
customChunks[p] = customChunks[p].replace(/vertex_normal/g, "vec3(0)").replace(/vertex_tangent/g, "vec4(0)");
}
}
}
}
for(p in options.chunks) {
newP = this._oldChunkToNew[p];
if (newP) {
customChunks[newP.n] = newP.f(options.chunks[p], newP.n, p);
}
}
chunks = customChunks;
}
code += chunks.baseVS;
// Allow first shadow coords to be computed in VS
var mainShadowLight = -1;
if (!options.noShadow && !options.twoSidedLighting) {
for (i = 0; i < options.lights.length; i++) {
lightType = options.lights[i]._type;
if (options.lights[i].castShadows) {
if (lightType === pc.LIGHTTYPE_DIRECTIONAL) {
code += "uniform mat4 light" + i + "_shadowMatrixVS;\n";
code += "uniform vec3 light" + i + "_shadowParamsVS;\n";
code += "uniform vec3 light" + i + (lightType === pc.LIGHTTYPE_DIRECTIONAL? "_directionVS" : "_positionVS") + ";\n";
mainShadowLight = i;
break;
}
}
}
if (mainShadowLight >= 0) {
code += chunks.shadowCoordVS;
}
}
var attributes = {
vertex_position: pc.SEMANTIC_POSITION
};
codeBody += " vPositionW = getWorldPosition();\n";
if (options.useInstancing) {
attributes.instance_line1 = pc.SEMANTIC_TEXCOORD2;
attributes.instance_line2 = pc.SEMANTIC_TEXCOORD3;
attributes.instance_line3 = pc.SEMANTIC_TEXCOORD4;
attributes.instance_line4 = pc.SEMANTIC_TEXCOORD5;
code += chunks.instancingVS;
}
if (needsNormal) {
attributes.vertex_normal = pc.SEMANTIC_NORMAL;
codeBody += " vNormalW = dNormalW = getNormal();\n";
if ((options.sphereMap) && (device.fragmentUniformsCount <= 16)) {
code += chunks.viewNormalVS;
codeBody += " vNormalV = getViewNormal();\n";
}
if ((options.heightMap || options.normalMap) && useTangents) {
attributes.vertex_tangent = pc.SEMANTIC_TANGENT;
code += chunks.tangentBinormalVS;
codeBody += " vTangentW = getTangent();\n";
codeBody += " vBinormalW = getBinormal();\n";
}
if (mainShadowLight >= 0) {
lightType = options.lights[mainShadowLight]._type;
if (lightType === pc.LIGHTTYPE_DIRECTIONAL) {
codeBody += " dLightDirNormW = light"+mainShadowLight+"_directionVS;\n";
} else {
codeBody += " getLightDirPoint(light"+mainShadowLight+"_positionVS);\n";
}
shadowCoordArgs = "(light"+mainShadowLight+"_shadowMatrixVS, light"+mainShadowLight+"_shadowParamsVS);\n";
codeBody += this._nonPointShadowMapProjection(device, options.lights[mainShadowLight], shadowCoordArgs);
}
}
var useUv = [];
var useUnmodifiedUv = [];
var maxUvSets = 2;
var cname, mname, tname, uname;
for (p in pc._matTex2D) {
mname = p + "Map";
if (options[p + "VertexColor"]) {
cname = p + "VertexColorChannel";
options[cname] = this._correctChannel(p, options[cname]);
}
if (options[mname]) {
cname = mname + "Channel";
tname = mname + "Transform";
uname = mname + "Uv";
options[uname] = Math.min(options[uname], maxUvSets - 1);
options[cname] = this._correctChannel(p, options[cname]);
var uvSet = options[uname];
useUv[uvSet] = true;
useUnmodifiedUv[uvSet] = useUnmodifiedUv[uvSet] || (options[mname] && !options[tname]);
}
}
if (options.forceUv1) useUv[1] = true;
for (i = 0; i < maxUvSets; i++) {
if (useUv[i]) {
attributes["vertex_texCoord" + i] = pc["SEMANTIC_TEXCOORD" + i];
code += chunks["uv" + i + "VS"];
codeBody += " vec2 uv" + i + " = getUv" + i + "();\n";
}
if (useUnmodifiedUv[i]) {
codeBody += " vUv" + i + " = uv" + i + ";\n";
}
}
var codes = [code, varyings, codeBody, []];
for (p in pc._matTex2D) {
mname = p + "Map";
if (options[mname]) {
tname = mname + "Transform";
if (options[tname]) {
uname = mname + "Uv";
this._setMapTransform(codes, p, options[tname], options[uname]);
}
}
}
code = codes[0];
varyings = codes[1];
codeBody = codes[2];
if (options.vertexColors) {
attributes.vertex_color = pc.SEMANTIC_COLOR;
codeBody += " vVertexColor = vertex_color;\n";
}
if (options.screenSpace) {
code += chunks.transformScreenSpaceVS;
if (needsNormal) code += chunks.normalVS;
} else if (options.skin) {
attributes.vertex_boneWeights = pc.SEMANTIC_BLENDWEIGHT;
attributes.vertex_boneIndices = pc.SEMANTIC_BLENDINDICES;
code += pc.programlib.skinCode(device, chunks);
code += chunks.transformSkinnedVS;
if (needsNormal) code += chunks.normalSkinnedVS;
} else if (options.useInstancing) {
code += chunks.transformInstancedVS;
if (needsNormal) code += chunks.normalInstancedVS;
} else if (options.pixelSnap) {
code += chunks.transformPixelSnapVS;
if (needsNormal) code += chunks.normalVS;
} else {
code += chunks.transformVS;
if (needsNormal) code += chunks.normalVS;
}
code += "\n";
code += chunks.startVS;
code += codeBody;
code += "}";
var vshader = code;
var oldVars = varyings;
varyings = "";
varyings += this._addVaryingIfNeeded(code, "vec4", "vMainShadowUv");
varyings += this._addVaryingIfNeeded(code, "vec4", "vVertexColor");
varyings += this._addVaryingIfNeeded(code, "vec3", "vPositionW");
varyings += this._addVaryingIfNeeded(code, "vec3", "vNormalV");
varyings += this._addVaryingIfNeeded(code, "vec3", "vNormalW");
varyings += this._addVaryingIfNeeded(code, "vec3", "vTangentW");
varyings += this._addVaryingIfNeeded(code, "vec3", "vBinormalW");
varyings += this._addVaryingIfNeeded(code, "vec2", "vUv0");
varyings += this._addVaryingIfNeeded(code, "vec2", "vUv1");
varyings += oldVars;
vshader = varyings + vshader;
var startCode = "";
if (device.webgl2) {
startCode = pc.programlib.versionCode(device);
if (chunks.extensionVS) {
startCode += chunks.extensionVS + "\n";
}
vshader = startCode + chunks.gles3VS + vshader;
} else {
if (chunks.extensionVS) {
startCode = chunks.extensionVS + "\n";
}
vshader = startCode + vshader;
}
//////////////////////////////
// GENERATE FRAGMENT SHADER //
//////////////////////////////
if (options.forceFragmentPrecision && options.forceFragmentPrecision!="highp" &&
options.forceFragmentPrecision !== "mediump" && options.forceFragmentPrecision !== "lowp")
options.forceFragmentPrecision = null;
if (options.forceFragmentPrecision) {
if (options.forceFragmentPrecision === "highp" && device.maxPrecision !== "highp") options.forceFragmentPrecision = "mediump";
if (options.forceFragmentPrecision === "mediump" && device.maxPrecision === "lowp") options.forceFragmentPrecision = "lowp";
}
var fshader;
code = '';
if (device.webgl2) {
code += pc.programlib.versionCode(device);
}
if (device.extStandardDerivatives && !device.webgl2) {
code += "#extension GL_OES_standard_derivatives : enable\n\n";
}
if (chunks.extensionPS) {
code += chunks.extensionPS + "\n";
}
if (device.webgl2) {
code += chunks.gles3PS;
}
code += options.forceFragmentPrecision? "precision " + options.forceFragmentPrecision + " float;\n\n" : pc.programlib.precisionCode(device);
if (options.customFragmentShader) {
fshader = code + options.customFragmentShader;
return {
attributes: attributes,
vshader: vshader,
fshader: fshader,
tag: pc.SHADERTAG_MATERIAL
};
}
code += varyings;
code += chunks.basePS;
var codeBegin = code;
code = "";
// FRAGMENT SHADER INPUTS: UNIFORMS
var numShadowLights = 0;
var shadowTypeUsed = [];
var useVsm = false;
var usePerspZbufferShadow = false;
var light;
for (i = 0; i < options.lights.length; i++) {
light = options.lights[i];
lightType = light._type;
code += "uniform vec3 light" + i + "_color;\n";
if (lightType === pc.LIGHTTYPE_DIRECTIONAL) {
code += "uniform vec3 light" + i + "_direction;\n";
} else {
code += "uniform vec3 light" + i + "_position;\n";
code += "uniform float light" + i + "_radius;\n";
if (lightType === pc.LIGHTTYPE_SPOT) {
code += "uniform vec3 light" + i + "_direction;\n";
code += "uniform float light" + i + "_innerConeAngle;\n";
code += "uniform float light" + i + "_outerConeAngle;\n";
}
}
if (light.castShadows && !options.noShadow) {
code += "uniform mat4 light" + i + "_shadowMatrix;\n";
if (lightType !== pc.LIGHTTYPE_DIRECTIONAL) {
code += "uniform vec4 light" + i + "_shadowParams;\n"; // Width, height, bias, radius
} else {
code += "uniform vec3 light" + i + "_shadowParams;\n"; // Width, height, bias
}
if (lightType === pc.LIGHTTYPE_POINT) {
code += "uniform samplerCube light" + i + "_shadowMap;\n";
} else {
if (light._isPcf && device.webgl2) {
code += "uniform sampler2DShadow light" + i + "_shadowMap;\n";
} else {
code += "uniform sampler2D light" + i + "_shadowMap;\n";
}
}
numShadowLights++;
shadowTypeUsed[light._shadowType] = true;
if (light._isVsm) useVsm = true;
if (light._isPcf && (device.webgl2 || device.extStandardDerivatives) && lightType === pc.LIGHTTYPE_SPOT) usePerspZbufferShadow = true;
}
if (light._cookie) {
if (light._cookie._cubemap) {
if (lightType === pc.LIGHTTYPE_POINT) {
code += "uniform samplerCube light" + i + "_cookie;\n";
code += "uniform float light" + i + "_cookieIntensity;\n";
if (!light.castShadows || options.noShadow) code += "uniform mat4 light" + i + "_shadowMatrix;\n";
}
} else {
if (lightType === pc.LIGHTTYPE_SPOT) {
code += "uniform sampler2D light" + i + "_cookie;\n";
code += "uniform float light" + i + "_cookieIntensity;\n";
if (!light.castShadows || options.noShadow) code += "uniform mat4 light" + i + "_shadowMatrix;\n";
if (light._cookieTransform) {
code += "uniform vec4 light" + i + "_cookieMatrix;\n";
code += "uniform vec2 light" + i + "_cookieOffset;\n";
}
}
}
}
}
code += "\n"; // End of uniform declarations
var uvOffset = options.heightMap ? " + dUvOffset" : "";
var tbn = options.fastTbn? chunks.TBNfastPS : chunks.TBNPS;
if (needsNormal) {
if (options.normalMap && useTangents) {
code += options.packedNormal? chunks.normalXYPS : chunks.normalXYZPS;
var uv = this._uvSource(options.normalMapTransform, options.normalMapUv) + uvOffset;
if (options.needsNormalFloat) {
code += (options.fastTbn? chunks.normalMapFloatTBNfastPS : chunks.normalMapFloatPS).replace(/\$UV/g, uv);
} else {
code += chunks.normalMapPS.replace(/\$UV/g, uv);
}
code += tbn;
} else {
code += chunks.normalVertexPS;
}
}
code += pc.programlib.gammaCode(options.gamma);
code += pc.programlib.tonemapCode(options.toneMap);
code += pc.programlib.fogCode(options.fog);
if (options.useRgbm) code += chunks.rgbmPS;
if (cubemapReflection || options.prefilteredCubemap) {
code += options.fixSeams? chunks.fixCubemapSeamsStretchPS : chunks.fixCubemapSeamsNonePS;
}
if (needsNormal) {
code += options.cubeMapProjection>0? chunks.cubeMapProjectBoxPS : chunks.cubeMapProjectNonePS;
code += options.skyboxIntensity? chunks.envMultiplyPS : chunks.envConstPS;
}
code += this._addMap("diffuse", options, chunks, uvOffset);
if (options.blendType!==pc.BLEND_NONE || options.alphaTest || options.alphaToCoverage) {
code += this._addMap("opacity", options, chunks, uvOffset);
}
code += this._addMap("emissive", options, chunks, uvOffset, null, options.emissiveFormat);
if (options.useSpecular && (lighting || reflections)) {
if (options.specularAA && options.normalMap) {
if (options.needsNormalFloat && needsNormal) {
code += chunks.specularAaToksvigFloatPS;
} else {
code += chunks.specularAaToksvigPS;
}
} else {
code += chunks.specularAaNonePS;
}
code += this._addMap(options.useMetalness? "metalness" : "specular", options, chunks, uvOffset);
code += this._addMap("gloss", options, chunks, uvOffset);
if (options.fresnelModel > 0) {
if (options.fresnelModel === pc.FRESNEL_SIMPLE) {
code += chunks.fresnelSimplePS;
} else if (options.fresnelModel === pc.FRESNEL_SCHLICK) {
code += chunks.fresnelSchlickPS;
} else if (options.fresnelModel === pc.FRESNEL_COMPLEX) {
code += chunks.fresnelComplexPS;
}
}
}
if (options.heightMap) {
if (!options.normalMap) code += tbn;
code += this._addMap("height", options, chunks, "", chunks.parallaxPS);
}
var useAo = options.aoMap || options.aoVertexColor;
if (useAo) {
code += this._addMap("ao", options, chunks, uvOffset, options.aoVertexColor? chunks.aoVertPS : chunks.aoTexPS);
if (options.occludeSpecular) {
if (options.occludeSpecular === pc.SPECOCC_AO) {
code += options.occludeSpecularFloat? chunks.aoSpecOccSimplePS : chunks.aoSpecOccConstSimplePS;
} else {
code += options.occludeSpecularFloat? chunks.aoSpecOccPS : chunks.aoSpecOccConstPS;
}
}
}
var reflectionDecode = options.rgbmReflection? "decodeRGBM" : (options.hdrReflection? "" : "gammaCorrectInput");
if (cubemapReflection) {
if (options.prefilteredCubemap) {
if (useTexCubeLod) {
code += chunks.reflectionPrefilteredCubeLodPS.replace(/\$DECODE/g, reflectionDecode);
} else {
code += chunks.reflectionPrefilteredCubePS.replace(/\$DECODE/g, reflectionDecode);
}
} else {
code += chunks.reflectionCubePS.replace(/\$textureCubeSAMPLE/g,
options.rgbmReflection? "textureCubeRGBM" : (options.hdrReflection? "textureCube" : "textureCubeSRGB"));
}
}
if (options.sphereMap) {
var scode = device.fragmentUniformsCount>16? chunks.reflectionSpherePS : chunks.reflectionSphereLowPS;
scode = scode.replace(/\$texture2DSAMPLE/g, options.rgbmReflection? "texture2DRGBM" : (options.hdrReflection? "texture2D" : "texture2DSRGB"));
code += scode;
}
if (options.dpAtlas) {
code += chunks.reflectionDpAtlasPS.replace(/\$texture2DSAMPLE/g, options.rgbmReflection? "texture2DRGBM" : (options.hdrReflection? "texture2D" : "texture2DSRGB"));
}
if ((cubemapReflection || options.sphereMap || options.dpAtlas) && options.refraction) {
code += chunks.refractionPS;
}
if (numShadowLights > 0) {
if (shadowTypeUsed[pc.SHADOW_PCF3]) {
code += chunks.shadowStandardPS;
}
if (shadowTypeUsed[pc.SHADOW_PCF5]) {
code += chunks.shadowStandardGL2PS;
}
if (useVsm) {
code += chunks.shadowVSM_commonPS;
if (shadowTypeUsed[pc.SHADOW_VSM8]) {
code += chunks.shadowVSM8PS;
}
if (shadowTypeUsed[pc.SHADOW_VSM16]) {
code += device.extTextureHalfFloatLinear? chunks.shadowEVSMPS.replace(/\$/g, "16") : chunks.shadowEVSMnPS.replace(/\$/g, "16");
}
if (shadowTypeUsed[pc.SHADOW_VSM32]) {
code += device.extTextureFloatLinear? chunks.shadowEVSMPS.replace(/\$/g, "32") : chunks.shadowEVSMnPS.replace(/\$/g, "32");
}
}
if (device.webgl2 || device.extStandardDerivatives) {
// bias is applied on render
} else {
code += chunks.biasConstPS;
}
code += chunks.shadowCoordPS + chunks.shadowCommonPS;
if (usePerspZbufferShadow) code += chunks.shadowCoordPerspZbufferPS;
if (mainShadowLight>=0) {
if (shadowTypeUsed[pc.SHADOW_PCF3]) {
code += chunks.shadowStandardVSPS;
}
if (shadowTypeUsed[pc.SHADOW_PCF5]) {
code += chunks.shadowStandardGL2VSPS;
}
if (useVsm) {
if (shadowTypeUsed[pc.SHADOW_VSM8]) {
code += chunks.shadowVSMVSPS.replace(/\$VSM/g, "VSM8").replace(/\$/g, "8");
}
if (shadowTypeUsed[pc.SHADOW_VSM16]) {
code += chunks.shadowVSMVSPS.replace(/\$VSM/g, "VSM16").replace(/\$/g, "16");
}
if (shadowTypeUsed[pc.SHADOW_VSM32]) {
code += chunks.shadowVSMVSPS.replace(/\$VSM/g, "VSM32").replace(/\$/g, "32");
}
}
}
}
if (lighting) code += chunks.lightDiffuseLambertPS;
var useOldAmbient = false;
if (options.useSpecular) {
if (lighting) code += options.shadingModel === pc.SPECULAR_PHONG? chunks.lightSpecularPhongPS : chunks.lightSpecularBlinnPS;
if (options.sphereMap || cubemapReflection || options.dpAtlas || (options.fresnelModel > 0)) {
if (options.fresnelModel > 0) {
if (options.conserveEnergy) {
code += chunks.combineDiffuseSpecularPS; // this one is correct, others are old stuff
} else {
code += chunks.combineDiffuseSpecularNoConservePS; // if you don't use environment cubemaps, you may consider this
}
} else {
code += chunks.combineDiffuseSpecularOldPS;
}
} else {
if (options.diffuseMap) {
code += chunks.combineDiffuseSpecularNoReflPS;
} else {
code += chunks.combineDiffuseSpecularNoReflSeparateAmbientPS;
useOldAmbient = true;
}
}
} else {
code += chunks.combineDiffusePS;
}
var addAmbient = true;
if (options.lightMap || options.lightVertexColor) {
code += this._addMap("light", options, chunks, uvOffset,
options.dirLightMap? chunks.lightmapDirPS : chunks.lightmapSinglePS, options.lightMapFormat);
addAmbient = options.lightMapWithoutAmbient;
}
if (addAmbient) {
var ambientDecode = options.rgbmAmbient? "decodeRGBM" : (options.hdrAmbient? "" : "gammaCorrectInput");
if (options.ambientSH) {
code += chunks.ambientSHPS;
}
else if (options.prefilteredCubemap) {
if (useTexCubeLod) {
code += chunks.ambientPrefilteredCubeLodPS.replace(/\$DECODE/g, ambientDecode);
} else {
code += chunks.ambientPrefilteredCubePS.replace(/\$DECODE/g, ambientDecode);
}
} else {
code += chunks.ambientConstantPS;
}
}
if (options.modulateAmbient && !useOldAmbient) {
code += "uniform vec3 material_ambient;\n";
}
if (options.alphaTest) {
code += chunks.alphaTestPS;
}
if (options.msdf) {
code += chunks.msdfPS;
}
if (needsNormal) {
code += chunks.viewDirPS;
if (options.useSpecular) {
code += chunks.reflDirPS;
}
}
var hasPointLights = false;
var usesLinearFalloff = false;
var usesInvSquaredFalloff = false;
var usesSpot = false;
var usesCookie = false;
var usesCookieNow;
// FRAGMENT SHADER BODY
code += chunks.startPS;
if (needsNormal) {
if (options.twoSidedLighting) {
code += " dVertexNormalW = gl_FrontFacing ? vNormalW : -vNormalW;\n";
} else {
code += " dVertexNormalW = vNormalW;\n"
}
if (options.heightMap || options.normalMap) {
if (options.twoSidedLighting) {
code += " dTangentW = gl_FrontFacing ? vTangentW : -vTangentW;\n";
code += " dBinormalW = gl_FrontFacing ? vBinormalW : -vBinormalW;\n";
} else {
code += " dTangentW = vTangentW;\n"
code += " dBinormalW = vBinormalW;\n"
}
}
}
var opacityParallax = false;
if (options.blendType === pc.BLEND_NONE && !options.alphaTest && !options.alphaToCoverage) {
code += " dAlpha = 1.0;\n";
} else {
if (options.heightMap && options.opacityMap) {
opacityParallax = true;
} else {
code += " getOpacity();\n"; // calculate opacity first if there's no parallax+opacityMap, to allow early out
if (options.alphaTest) {
code += " alphaTest(dAlpha);\n";
}
}
}
if (needsNormal) {
code += " getViewDir();\n";
if (options.heightMap || options.normalMap) {
code += " getTBN();\n";
}
if (options.heightMap) {
code += " getParallax();\n";
}
if (opacityParallax) {
code += " getOpacity();\n"; // if there's parallax, calculate opacity after it, to properly distort
if (options.alphaTest) {
code += " alphaTest(dAlpha);\n";
}
}
code += " getNormal();\n";
if (options.useSpecular) code += " getReflDir();\n";
}
code += " getAlbedo();\n";
if ((lighting && options.useSpecular) || reflections) {
code += " getSpecularity();\n";
code += " getGlossiness();\n";
if (options.fresnelModel > 0) code += " getFresnel();\n";
}
if (addAmbient) {
code += " addAmbient();\n";
}
if (options.modulateAmbient && !useOldAmbient) {
code += " dDiffuseLight *= material_ambient;\n";
}
if (useAo && !options.occludeDirect) {
code += " applyAO();\n";
}
if (options.lightMap || options.lightVertexColor) {
code += " addLightMap();\n";
}
if (lighting || reflections) {
if (cubemapReflection || options.sphereMap || options.dpAtlas) {
code += " addReflection();\n";
}
if (options.dirLightMap) {
code += " addDirLightMap();\n";
}
for (i = 0; i < options.lights.length; i++) {
// The following code is not decoupled to separate shader files, because most of it can be actually changed to achieve different behaviours like:
// - different falloffs
// - different shadow coords (point shadows will use drastically different genShadowCoord)
// - different shadow filter modes
// getLightDiffuse and getLightSpecular is BRDF itself.
light = options.lights[i];
lightType = light._type;
usesCookieNow = false;
if (lightType === pc.LIGHTTYPE_DIRECTIONAL) {
// directional
code += " dLightDirNormW = light"+i+"_direction;\n";
code += " dAtten = 1.0;\n";
} else {
if (light._cookie) {
if (lightType === pc.LIGHTTYPE_SPOT && !light._cookie._cubemap) {
usesCookie = true;
usesCookieNow = true;
} else if (lightType === pc.LIGHTTYPE_POINT && light._cookie._cubemap) {
usesCookie = true;
usesCookieNow = true;
}
}
code += " getLightDirPoint(light"+i+"_position);\n";
hasPointLights = true;
if (usesCookieNow) {
if (lightType === pc.LIGHTTYPE_SPOT) {
code += " dAtten3 = getCookie2D"+(light._cookieFalloff?"":"Clip")+(light._cookieTransform?"Xform":"")+"(light"+i+"_cookie, light"+i+"_shadowMatrix, light"+i+"_cookieIntensity"+(light._cookieTransform?", light"+i+"_cookieMatrix, light"+i+"_cookieOffset":"")+")."+light._cookieChannel+";\n";
} else {
code += " dAtten3 = getCookieCube(light"+i+"_cookie, light"+i+"_shadowMatrix, light"+i+"_cookieIntensity)."+light._cookieChannel+";\n";
}
}
if (light._falloffMode === pc.LIGHTFALLOFF_LINEAR) {
code += " dAtten = getFalloffLinear(light"+i+"_radius);\n";
usesLinearFalloff = true;
} else {
code += " dAtten = getFalloffInvSquared(light"+i+"_radius);\n";
usesInvSquaredFalloff = true;
}
code += " if (dAtten > 0.00001) {\n"; // BRANCH START
if (lightType === pc.LIGHTTYPE_SPOT) {
if (!(usesCookieNow && !light._cookieFalloff)) {
code += " dAtten *= getSpotEffect(light"+i+"_direction, light"+i+"_innerConeAngle, light"+i+"_outerConeAngle);\n";
usesSpot = true;
}
}
}
code += " dAtten *= getLightDiffuse();\n";
if (light.castShadows && !options.noShadow) {
var shadowReadMode = null;
var evsmExp;
if (light._shadowType === pc.SHADOW_VSM8) {
shadowReadMode = "VSM8";
evsmExp = "0.0";
} else if (light._shadowType === pc.SHADOW_VSM16) {
shadowReadMode = "VSM16";
evsmExp = "5.54";
} else if (light._shadowType === pc.SHADOW_VSM32) {
shadowReadMode = "VSM32";
if (device.extTextureFloatHighPrecision) {
evsmExp = "15.0";
} else {
evsmExp = "5.54";
}
} else if (light._shadowType === pc.SHADOW_PCF5) {
shadowReadMode = "PCF5x5";
} else {
shadowReadMode = "PCF3x3";
}