#!/usr/bin/env python3 """ Generate static PNG test fixtures for texture test suite. This script creates solid color PNG files that are used by SharedTextureTestFixtures and FitTextureSizeWindowTests. Usage: python scripts/generate-test-textures.py # Generate base textures only python scripts/generate-test-textures.py --extended # Generate base + extended textures Output: Tests/Editor/TestAssets/Textures/ Base textures: solid_300x100_magenta.png solid_128x128_white.png solid_256x256_cyan.png solid_64x64_red.png solid_384x10_blue.png solid_512x512_gray.png Extended textures (with --extended flag): solid_1x1_black.png solid_2x2_black.png solid_32x32_black.png solid_1024x1024_black.png solid_2048x2048_black.png solid_4096x4096_black.png solid_257x64_gray.png solid_255x255_gray.png solid_513x400_gray.png solid_511x511_gray.png solid_1x512_yellow.png solid_512x1_yellow.png solid_100x200_green.png solid_400x240_blue.png solid_450x254_blue.png """ import argparse import os import random from pathlib import Path try: from PIL import Image except ImportError: print("PIL/Pillow not found. Installing...") import subprocess subprocess.check_call(["pip", "install", "Pillow"]) from PIL import Image def generate_guid() -> str: """Generate a 32-character lowercase hex GUID for Unity meta files.""" return ''.join(random.choices('0123456789abcdef', k=32)) def create_solid_texture( width: int, height: int, color: tuple, output_path: str ) -> None: """Create a solid color texture.""" image = Image.new("RGBA", (width, height), color) image.save(output_path, "PNG") print(f"Created: {output_path}") def generate_texture_meta_file(output_path: str) -> None: """Generate a Unity meta file for a texture (Default type, not sprite).""" guid = generate_guid() meta_content = f"""fileFormatVersion: 2 guid: {guid} TextureImporter: internalIDToNameTable: [] externalObjects: {{}} serializedVersion: 13 mipmaps: mipMapMode: 0 enableMipMap: 0 sRGBTexture: 1 linearTexture: 0 fadeOut: 0 borderMipMap: 0 mipMapsPreserveCoverage: 0 alphaTestReferenceValue: 0.5 mipMapFadeDistanceStart: 1 mipMapFadeDistanceEnd: 3 bumpmap: convertToNormalMap: 0 externalNormalMap: 0 heightScale: 0.25 normalMapFilter: 0 flipGreenChannel: 0 isReadable: 1 streamingMipmaps: 0 streamingMipmapsPriority: 0 vTOnly: 0 ignoreMipmapLimit: 0 grayScaleToAlpha: 0 generateCubemap: 6 cubemapConvolution: 0 seamlessCubemap: 0 textureFormat: 1 maxTextureSize: 2048 textureSettings: serializedVersion: 2 filterMode: 1 aniso: 1 mipBias: 0 wrapU: 1 wrapV: 1 wrapW: 1 nPOTScale: 0 lightmap: 0 compressionQuality: 50 spriteMode: 0 spriteExtrude: 1 spriteMeshType: 1 alignment: 0 spritePivot: {{x: 0.5, y: 0.5}} spritePixelsToUnits: 100 spriteBorder: {{x: 0, y: 0, z: 0, w: 0}} spriteGenerateFallbackPhysicsShape: 1 alphaUsage: 1 alphaIsTransparency: 1 spriteTessellationDetail: -1 textureType: 0 textureShape: 1 singleChannelComponent: 0 flipbookRows: 1 flipbookColumns: 1 maxTextureSizeSet: 0 compressionQualitySet: 0 textureFormatSet: 0 ignorePngGamma: 0 applyGammaDecoding: 0 swizzle: 50462976 cookieLightType: 0 platformSettings: - serializedVersion: 3 buildTarget: DefaultTexturePlatform maxTextureSize: 2048 resizeAlgorithm: 0 textureFormat: -1 textureCompression: 0 compressionQuality: 50 crunchedCompression: 0 allowsAlphaSplitting: 0 overridden: 0 ignorePlatformSupport: 0 androidETC2FallbackOverride: 0 forceMaximumCompressionQuality_BC6H_BC7: 0 - serializedVersion: 3 buildTarget: Standalone maxTextureSize: 2048 resizeAlgorithm: 0 textureFormat: -1 textureCompression: 0 compressionQuality: 50 crunchedCompression: 0 allowsAlphaSplitting: 0 overridden: 0 ignorePlatformSupport: 0 androidETC2FallbackOverride: 0 forceMaximumCompressionQuality_BC6H_BC7: 0 - serializedVersion: 3 buildTarget: WebGL maxTextureSize: 2048 resizeAlgorithm: 0 textureFormat: -1 textureCompression: 0 compressionQuality: 50 crunchedCompression: 0 allowsAlphaSplitting: 0 overridden: 0 ignorePlatformSupport: 0 androidETC2FallbackOverride: 0 forceMaximumCompressionQuality_BC6H_BC7: 0 spriteSheet: serializedVersion: 2 sprites: [] outline: [] physicsShape: [] bones: [] spriteID: internalID: 0 vertices: [] indices: edges: [] weights: [] secondaryTextures: [] nameFileIdTable: {{}} mipmapLimitGroupName: pSDRemoveMatte: 0 userData: assetBundleName: assetBundleVariant: """ with open(output_path, 'w') as f: f.write(meta_content) print(f"Created: {output_path}") def generate_folder_meta_file(output_path: str) -> None: """Generate a Unity meta file for a folder.""" guid = generate_guid() meta_content = f"""fileFormatVersion: 2 guid: {guid} folderAsset: yes DefaultImporter: externalObjects: {{}} userData: assetBundleName: assetBundleVariant: """ with open(output_path, 'w') as f: f.write(meta_content) print(f"Created: {output_path}") def main(): parser = argparse.ArgumentParser( description='Generate static PNG test fixtures for texture test suite.' ) parser.add_argument( '--extended', action='store_true', help='Generate extended texture set (15 additional textures)' ) args = parser.parse_args() script_dir = Path(__file__).parent.parent output_dir = script_dir / "Tests" / "Editor" / "TestAssets" / "Textures" os.makedirs(output_dir, exist_ok=True) print(f"Output directory: {output_dir}") # Define base textures: (name, width, height, color_rgba) textures = [ ("solid_300x100_magenta", 300, 100, (255, 0, 255, 255)), # Magenta ("solid_128x128_white", 128, 128, (255, 255, 255, 255)), # White ("solid_256x256_cyan", 256, 256, (0, 255, 255, 255)), # Cyan ("solid_64x64_red", 64, 64, (255, 0, 0, 255)), # Red ("solid_384x10_blue", 384, 10, (0, 0, 255, 255)), # Blue ("solid_512x512_gray", 512, 512, (128, 128, 128, 255)), # Gray ] # Extended textures for comprehensive dimension coverage extended_textures = [ ("solid_1x1_black", 1, 1, (0, 0, 0, 255)), # Minimum edge case ("solid_2x2_black", 2, 2, (0, 0, 0, 255)), # Very small POT ("solid_32x32_black", 32, 32, (0, 0, 0, 255)), # Min clamp default ("solid_1024x1024_black", 1024, 1024, (0, 0, 0, 255)), # Large POT ("solid_2048x2048_black", 2048, 2048, (0, 0, 0, 255)), # Very large POT ("solid_4096x4096_black", 4096, 4096, (0, 0, 0, 255)), # Maximum POT ("solid_257x64_gray", 257, 64, (128, 128, 128, 255)), # Just over 256 boundary ("solid_255x255_gray", 255, 255, (128, 128, 128, 255)), # Just under 256 ("solid_513x400_gray", 513, 400, (128, 128, 128, 255)), # Just over 512 ("solid_511x511_gray", 511, 511, (128, 128, 128, 255)), # Just under 512 ("solid_1x512_yellow", 1, 512, (255, 255, 0, 255)), # Tall strip ("solid_512x1_yellow", 512, 1, (255, 255, 0, 255)), # Wide strip ("solid_100x200_green", 100, 200, (0, 255, 0, 255)), # Portrait NPOT ("solid_400x240_blue", 400, 240, (0, 0, 255, 255)), # Bug case dimension ("solid_450x254_blue", 450, 254, (0, 0, 255, 255)), # Reported bug case ] if args.extended: textures.extend(extended_textures) print("Including extended texture set...") # Generate folder meta file if it doesn't exist folder_meta_path = str(output_dir) + ".meta" if not os.path.exists(folder_meta_path): generate_folder_meta_file(folder_meta_path) for name, width, height, color in textures: png_path = str(output_dir / f"{name}.png") meta_path = str(output_dir / f"{name}.png.meta") create_solid_texture(width, height, color, png_path) generate_texture_meta_file(meta_path) print("\nAll texture files created successfully!") print(f"\nFiles in {output_dir}:") for f in sorted(output_dir.glob("*.png")): print(f" - {f.name}") if __name__ == "__main__": main()