mirror of
https://github.com/lighttransport/tinyusdz.git
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Add Material Complexity Analyzer for performance optimization
First Priority 2 feature: analyze material rendering cost and suggest optimizations. ## Features - Relative cost calculation (texture sampling + feature costs) - Complexity classification (Low/Medium/High/Very High) - Texture memory tracking per material - Scene-wide analysis with aggregated stats - 12 optimization suggestions: * Texture resolution reduction (4K→2K, 2K→1K) * Power-of-two warnings * Expensive feature warnings (transmission, iridescence, clearcoat) * Texture packing suggestions (ORM texture) * Memory budget warnings (>50MB, >100MB) ## Implementation - `material-complexity-analyzer.js` (376 lines) - Cost weights for features: * Transmission: 50 (very expensive) * Iridescence: 25 * Clearcoat: 20 * Normal mapping: 12 * Base textures: 8-10 - GUI folder "Performance Analysis" with: * Analyze button * Memory/texture/complexity displays * Low/Medium/High counts ## Usage Click "⚡ Analyze Performance" in GUI. Shows memory usage, texture count, and optimization suggestions in console. Priority 2 Progress: 1/4 features (25%) 🚧 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Syoyo Fujita
361
web/js/material-complexity-analyzer.js
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361
web/js/material-complexity-analyzer.js
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@@ -0,0 +1,361 @@
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// Material Complexity Analyzer
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// Measure and display material rendering cost for performance optimization
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import * as THREE from 'three';
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export class MaterialComplexityAnalyzer {
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constructor() {
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this.costWeights = {
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// Texture sampling costs
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baseTexture: 10,
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normalMap: 12, // Requires tangent space transform
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roughnessMap: 8,
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metalnessMap: 8,
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aoMap: 8,
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emissiveMap: 10,
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// Advanced feature costs
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transmission: 50, // Very expensive (requires extra passes)
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clearcoat: 20,
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sheen: 15,
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iridescence: 25,
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anisotropy: 18,
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// Other features
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alphaTest: 5,
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envMap: 15,
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lightMap: 10
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};
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}
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// Analyze a single material
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analyzeMaterial(material) {
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const analysis = {
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name: material.name || 'Unnamed',
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complexity: 'Low',
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relativeCost: 0,
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textures: {
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count: 0,
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list: [],
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totalMemoryMB: 0
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},
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features: {
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active: [],
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inactive: []
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},
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suggestions: []
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};
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// Count and analyze textures
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const textureProps = {
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'map': 'Base Color',
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'normalMap': 'Normal Map',
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'roughnessMap': 'Roughness',
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'metalnessMap': 'Metalness',
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'aoMap': 'Ambient Occlusion',
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'emissiveMap': 'Emissive',
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'clearcoatMap': 'Clearcoat',
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'clearcoatNormalMap': 'Clearcoat Normal',
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'clearcoatRoughnessMap': 'Clearcoat Roughness',
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'sheenColorMap': 'Sheen Color',
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'sheenRoughnessMap': 'Sheen Roughness',
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'transmissionMap': 'Transmission',
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'thicknessMap': 'Thickness',
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'specularColorMap': 'Specular Color',
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'specularIntensityMap': 'Specular Intensity',
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'iridescenceMap': 'Iridescence',
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'iridescenceThicknessMap': 'Iridescence Thickness'
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};
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Object.keys(textureProps).forEach(prop => {
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if (material[prop] && material[prop].image) {
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const texture = material[prop];
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const width = texture.image.width;
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const height = texture.image.height;
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const memoryBytes = width * height * 4; // RGBA
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const memoryMB = memoryBytes / (1024 * 1024);
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analysis.textures.count++;
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analysis.textures.totalMemoryMB += memoryMB;
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analysis.textures.list.push({
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name: textureProps[prop],
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property: prop,
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dimensions: `${width}×${height}`,
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memoryMB: memoryMB,
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isPowerOfTwo: this.isPowerOfTwo(width) && this.isPowerOfTwo(height)
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});
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// Add texture cost
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const costKey = prop === 'map' ? 'baseTexture' :
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prop === 'normalMap' ? 'normalMap' :
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'baseTexture';
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analysis.relativeCost += this.costWeights[costKey] || 8;
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}
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});
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// Analyze advanced features
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const features = {
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'Transmission': material.transmission > 0,
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'Clearcoat': material.clearcoat > 0,
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'Sheen': material.sheen > 0,
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'Iridescence': material.iridescence > 0,
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'Anisotropy': material.anisotropy > 0,
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'Alpha Test': material.alphaTest > 0,
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'Environment Map': material.envMap !== null,
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'Normal Mapping': material.normalMap !== null,
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'PBR Workflow': material.isMeshStandardMaterial || material.isMeshPhysicalMaterial,
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'Double Sided': material.side === THREE.DoubleSide
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};
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Object.keys(features).forEach(featureName => {
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if (features[featureName]) {
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analysis.features.active.push(featureName);
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// Add feature costs
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const costKey = featureName.toLowerCase().replace(' ', '');
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if (this.costWeights[costKey]) {
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analysis.relativeCost += this.costWeights[costKey];
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}
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} else {
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analysis.features.inactive.push(featureName);
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}
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});
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// Determine complexity level
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if (analysis.relativeCost < 50) {
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analysis.complexity = 'Low';
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} else if (analysis.relativeCost < 150) {
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analysis.complexity = 'Medium';
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} else if (analysis.relativeCost < 300) {
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analysis.complexity = 'High';
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} else {
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analysis.complexity = 'Very High';
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}
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// Generate optimization suggestions
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analysis.suggestions = this.generateSuggestions(analysis, material);
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return analysis;
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}
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// Analyze all materials in a scene
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analyzeScene(scene) {
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const sceneAnalysis = {
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totalMaterials: 0,
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analyzedMaterials: 0,
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totalTextures: 0,
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totalMemoryMB: 0,
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averageComplexity: 0,
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complexityDistribution: {
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'Low': 0,
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'Medium': 0,
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'High': 0,
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'Very High': 0
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},
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materials: []
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};
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const materialsSet = new Set();
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scene.traverse(obj => {
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if (obj.isMesh && obj.material) {
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if (!materialsSet.has(obj.material.uuid)) {
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materialsSet.add(obj.material.uuid);
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sceneAnalysis.totalMaterials++;
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const analysis = this.analyzeMaterial(obj.material);
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sceneAnalysis.analyzedMaterials++;
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sceneAnalysis.totalTextures += analysis.textures.count;
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sceneAnalysis.totalMemoryMB += analysis.textures.totalMemoryMB;
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sceneAnalysis.averageComplexity += analysis.relativeCost;
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sceneAnalysis.complexityDistribution[analysis.complexity]++;
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sceneAnalysis.materials.push(analysis);
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}
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}
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});
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if (sceneAnalysis.analyzedMaterials > 0) {
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sceneAnalysis.averageComplexity /= sceneAnalysis.analyzedMaterials;
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}
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return sceneAnalysis;
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}
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// Generate optimization suggestions
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generateSuggestions(analysis, material) {
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const suggestions = [];
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// Texture resolution suggestions
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analysis.textures.list.forEach(tex => {
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const [width] = tex.dimensions.split('×').map(Number);
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if (width >= 4096) {
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const savings = tex.memoryMB * 0.75; // 4K → 2K saves 75%
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suggestions.push({
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type: 'texture_resolution',
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severity: 'medium',
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message: `Reduce ${tex.name} from ${tex.dimensions} to 2048×2048 (saves ${savings.toFixed(1)}MB)`
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});
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} else if (width >= 2048 && tex.memoryMB > 10) {
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const savings = tex.memoryMB * 0.75; // 2K → 1K saves 75%
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suggestions.push({
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type: 'texture_resolution',
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severity: 'low',
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message: `Consider reducing ${tex.name} to 1024×1024 (saves ${savings.toFixed(1)}MB)`
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});
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}
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if (!tex.isPowerOfTwo) {
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suggestions.push({
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type: 'texture_format',
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severity: 'low',
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message: `${tex.name} is not power-of-two (${tex.dimensions}) - may cause performance issues`
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});
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}
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});
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// Feature cost suggestions
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if (analysis.features.active.includes('Transmission')) {
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suggestions.push({
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type: 'feature_cost',
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severity: 'high',
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message: 'Transmission is very expensive (requires extra rendering passes) - remove if not essential'
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});
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}
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if (analysis.features.active.includes('Iridescence')) {
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suggestions.push({
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type: 'feature_cost',
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severity: 'medium',
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message: 'Iridescence adds significant shader cost - consider disabling if subtle'
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});
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}
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if (analysis.features.active.includes('Clearcoat')) {
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suggestions.push({
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type: 'feature_cost',
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severity: 'medium',
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message: 'Clearcoat adds extra BRDF layer - consider combining with base layer if possible'
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});
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}
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// Texture combination suggestions
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const hasRoughness = analysis.textures.list.some(t => t.property === 'roughnessMap');
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const hasMetalness = analysis.textures.list.some(t => t.property === 'metalnessMap');
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const hasAO = analysis.textures.list.some(t => t.property === 'aoMap');
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if (hasRoughness && hasMetalness && hasAO) {
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suggestions.push({
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type: 'texture_packing',
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severity: 'medium',
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message: 'Combine Roughness (R), Metalness (G), AO (B) into single ORM texture (saves texture slots + memory)'
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});
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} else if (hasRoughness && hasMetalness) {
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suggestions.push({
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type: 'texture_packing',
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severity: 'low',
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message: 'Pack Roughness and Metalness into single texture (RG channels)'
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});
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}
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// Memory budget suggestions
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if (analysis.textures.totalMemoryMB > 100) {
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suggestions.push({
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type: 'memory',
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severity: 'high',
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message: `Total texture memory (${analysis.textures.totalMemoryMB.toFixed(1)}MB) is very high - consider compression or resolution reduction`
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});
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} else if (analysis.textures.totalMemoryMB > 50) {
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suggestions.push({
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type: 'memory',
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severity: 'medium',
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message: `Texture memory (${analysis.textures.totalMemoryMB.toFixed(1)}MB) is high - monitor performance on mobile devices`
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});
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}
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return suggestions;
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}
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// Check if number is power of two
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isPowerOfTwo(n) {
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return n > 0 && (n & (n - 1)) === 0;
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}
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// Generate text report
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generateReport(sceneAnalysis) {
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let report = '# Material Complexity Analysis Report\n\n';
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report += `**Total Materials**: ${sceneAnalysis.totalMaterials}\n`;
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report += `**Total Textures**: ${sceneAnalysis.totalTextures}\n`;
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report += `**Total Memory**: ${sceneAnalysis.totalMemoryMB.toFixed(2)} MB\n`;
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report += `**Average Complexity**: ${sceneAnalysis.averageComplexity.toFixed(1)} (cost units)\n\n`;
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// Complexity distribution
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report += '## Complexity Distribution\n\n';
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Object.keys(sceneAnalysis.complexityDistribution).forEach(level => {
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const count = sceneAnalysis.complexityDistribution[level];
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if (count > 0) {
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const percentage = (count / sceneAnalysis.totalMaterials * 100).toFixed(1);
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report += `- **${level}**: ${count} materials (${percentage}%)\n`;
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}
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});
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report += '\n';
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// Material details
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report += '## Material Details\n\n';
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sceneAnalysis.materials.forEach(mat => {
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report += `### ${mat.name}\n`;
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report += `- **Complexity**: ${mat.complexity}\n`;
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report += `- **Relative Cost**: ${mat.relativeCost}\n`;
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report += `- **Textures**: ${mat.textures.count} (${mat.textures.totalMemoryMB.toFixed(2)} MB)\n`;
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report += `- **Active Features**: ${mat.features.active.join(', ') || 'None'}\n`;
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if (mat.suggestions.length > 0) {
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report += `- **Suggestions**:\n`;
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mat.suggestions.forEach(sug => {
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const icon = sug.severity === 'high' ? '🔴' : sug.severity === 'medium' ? '🟡' : 'ℹ️';
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report += ` ${icon} ${sug.message}\n`;
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});
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}
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report += '\n';
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});
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return report;
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}
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// Log results to console
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logResults(sceneAnalysis) {
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console.group('⚡ Material Complexity Analysis');
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console.log(`Materials: ${sceneAnalysis.totalMaterials}`);
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console.log(`Textures: ${sceneAnalysis.totalTextures}`);
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console.log(`Memory: ${sceneAnalysis.totalMemoryMB.toFixed(2)} MB`);
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console.log(`Average Complexity: ${sceneAnalysis.averageComplexity.toFixed(1)}`);
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console.group('Complexity Distribution');
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Object.keys(sceneAnalysis.complexityDistribution).forEach(level => {
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const count = sceneAnalysis.complexityDistribution[level];
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if (count > 0) {
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console.log(`${level}: ${count}`);
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}
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});
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console.groupEnd();
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sceneAnalysis.materials.forEach(mat => {
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if (mat.suggestions.length > 0) {
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console.group(`${mat.name} (${mat.complexity})`);
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mat.suggestions.forEach(sug => {
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const icon = sug.severity === 'high' ? '🔴' : sug.severity === 'medium' ? '🟡' : 'ℹ️';
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console.log(`${icon} ${sug.message}`);
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});
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console.groupEnd();
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}
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});
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console.groupEnd();
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}
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}
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// Make class globally accessible
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if (typeof window !== 'undefined') {
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window.MaterialComplexityAnalyzer = MaterialComplexityAnalyzer;
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}
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@@ -1289,6 +1289,7 @@
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<script type="module" src="material-validator.js"></script>
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<script type="module" src="split-view-comparison.js"></script>
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<script type="module" src="texture-inspector.js"></script>
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<script type="module" src="material-complexity-analyzer.js"></script>
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<!-- Main application script as module -->
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<script type="module" src="materialx.js"></script>
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@@ -48,6 +48,7 @@ import {
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import { MaterialValidator } from './material-validator.js';
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import { SplitViewComparison, COMPARISON_PRESETS } from './split-view-comparison.js';
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import { TextureInspector } from './texture-inspector.js';
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import { MaterialComplexityAnalyzer } from './material-complexity-analyzer.js';
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// Embedded default OpenPBR scene (simple sphere with material)
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const EMBEDDED_USDA_SCENE = `#usda 1.0
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@@ -3156,6 +3157,44 @@ function setupGUI() {
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validationFolder.add(validationParams, 'autoValidate').name('Auto-validate on Load');
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validationFolder.close();
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// Material Complexity Analyzer
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const complexityFolder = gui.addFolder('Performance Analysis');
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const complexityParams = {
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totalMemoryMB: 0,
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totalTextures: 0,
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averageComplexity: 0,
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lowCount: 0,
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mediumCount: 0,
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highCount: 0,
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analyzeNow: function() {
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const analyzer = new MaterialComplexityAnalyzer();
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const results = analyzer.analyzeScene(scene);
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complexityParams.totalMemoryMB = results.totalMemoryMB.toFixed(1);
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complexityParams.totalTextures = results.totalTextures;
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complexityParams.averageComplexity = results.averageComplexity.toFixed(0);
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complexityParams.lowCount = results.complexityDistribution['Low'];
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complexityParams.mediumCount = results.complexityDistribution['Medium'];
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complexityParams.highCount = results.complexityDistribution['High'] + results.complexityDistribution['Very High'];
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console.log(analyzer.generateReport(results));
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analyzer.logResults(results);
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updateStatus(`Complexity: ${complexityParams.averageComplexity} avg, ${complexityParams.totalMemoryMB}MB`, 'success');
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gui.controllersRecursive().forEach(c => c.updateDisplay());
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}
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};
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complexityFolder.add(complexityParams, 'analyzeNow').name('⚡ Analyze Performance');
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complexityFolder.add(complexityParams, 'totalMemoryMB').name('Texture Memory (MB)').listen().disable();
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complexityFolder.add(complexityParams, 'totalTextures').name('Total Textures').listen().disable();
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complexityFolder.add(complexityParams, 'averageComplexity').name('Avg Complexity').listen().disable();
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complexityFolder.add(complexityParams, 'lowCount').name('Low Complexity').listen().disable();
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complexityFolder.add(complexityParams, 'mediumCount').name('Medium Complexity').listen().disable();
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complexityFolder.add(complexityParams, 'highCount').name('High Complexity').listen().disable();
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complexityFolder.close();
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// Split View Comparison System
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const splitViewFolder = gui.addFolder('Split View Compare');
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const splitViewParams = {
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@@ -5499,6 +5538,7 @@ window.applyOverridePreset = applyOverridePreset;
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window.MaterialValidator = MaterialValidator;
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window.SplitViewComparison = SplitViewComparison;
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window.TextureInspector = TextureInspector;
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window.MaterialComplexityAnalyzer = MaterialComplexityAnalyzer;
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window.COMPARISON_PRESETS = COMPARISON_PRESETS;
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window.OVERRIDE_PRESETS = OVERRIDE_PRESETS;
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window.inspectTexture = inspectTexture;
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