@loaders.gl/textures/src/lib/gl-extensions.ts

Framework-independent loaders for compressed and super compressed (basis) textures

// loaders.gl
// SPDX-License-Identifier: MIT
// Copyright (c) vis.gl contributors

/* eslint-disable camelcase */

// Core WebGL texture formats
export const GL_RGB = 0x1907;
export const GL_RGBA = 0x1908;
export const GL_RGBA4 = 0x8056;
export const GL_RGB5_A1 = 0x8057;
export const GL_RGBA8 = 0x8058;
export const GL_RGB565 = 0x8d62;
export const GL_RGBA32F = 0x8814;

// WEBGL_compressed_texture_s3tc
export const GL_COMPRESSED_RGB_S3TC_DXT1_EXT = 0x83f0;
export const GL_COMPRESSED_RGBA_S3TC_DXT1_EXT = 0x83f1;
export const GL_COMPRESSED_RGBA_S3TC_DXT3_EXT = 0x83f2;
export const GL_COMPRESSED_RGBA_S3TC_DXT5_EXT = 0x83f3;

// WEBGL_compressed_texture_es3
export const GL_COMPRESSED_R11_EAC = 0x9270;
export const GL_COMPRESSED_SIGNED_R11_EAC = 0x9271;
export const GL_COMPRESSED_RG11_EAC = 0x9272;
export const GL_COMPRESSED_SIGNED_RG11_EAC = 0x9273;
export const GL_COMPRESSED_RGB8_ETC2 = 0x9274;
export const GL_COMPRESSED_RGBA8_ETC2_EAC = 0x9275;
export const GL_COMPRESSED_SRGB8_ETC2 = 0x9276;
export const GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC = 0x9277;
export const GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 = 0x9278;
export const GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2 = 0x9279;

// WEBGL_compressed_texture_pvrtc
export const GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG = 0x8c00;
export const GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG = 0x8c01;
export const GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG = 0x8c02;
export const GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG = 0x8c03;

// WEBGL_compressed_texture_etc1
export const GL_COMPRESSED_RGB_ETC1_WEBGL = 0x8d64;

// WEBGL_compressed_texture_atc
export const GL_COMPRESSED_RGB_ATC_WEBGL = 0x8c92;
export const GL_COMPRESSED_RGBA_ATC_EXPLICIT_ALPHA_WEBGL = 0x8c93;
export const GL_COMPRESSED_RGBA_ATC_INTERPOLATED_ALPHA_WEBGL = 0x87ee;

// WEBGL_compressed_texture_astc
export const GL_COMPRESSED_RGBA_ASTC_4x4_KHR = 0x93b0;
export const GL_COMPRESSED_RGBA_ASTC_5x4_KHR = 0x93b1;
export const GL_COMPRESSED_RGBA_ASTC_5x5_KHR = 0x93b2;
export const GL_COMPRESSED_RGBA_ASTC_6x5_KHR = 0x93b3;
export const GL_COMPRESSED_RGBA_ASTC_6x6_KHR = 0x93b4;
export const GL_COMPRESSED_RGBA_ASTC_8x5_KHR = 0x93b5;
export const GL_COMPRESSED_RGBA_ASTC_8x6_KHR = 0x93b6;
export const GL_COMPRESSED_RGBA_ASTC_8x8_KHR = 0x93b7;
export const GL_COMPRESSED_RGBA_ASTC_10x5_KHR = 0x93b8;
export const GL_COMPRESSED_RGBA_ASTC_10x6_KHR = 0x93b9;
export const GL_COMPRESSED_RGBA_ASTC_10x8_KHR = 0x93ba;
export const GL_COMPRESSED_RGBA_ASTC_10x10_KHR = 0x93bb;
export const GL_COMPRESSED_RGBA_ASTC_12x10_KHR = 0x93bc;
export const GL_COMPRESSED_RGBA_ASTC_12x12_KHR = 0x93bd;
export const GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR = 0x93d0;
export const GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR = 0x93d1;
export const GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR = 0x93d2;
export const GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR = 0x93d3;
export const GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR = 0x93d4;
export const GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR = 0x93d5;
export const GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR = 0x93d6;
export const GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR = 0x93d7;
export const GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR = 0x93d8;
export const GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR = 0x93d9;
export const GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR = 0x93da;
export const GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR = 0x93db;
export const GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR = 0x93dc;
export const GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR = 0x93dd;

// EXT_texture_compression_rgtc
export const GL_COMPRESSED_RED_RGTC1_EXT = 0x8dbb;
export const GL_COMPRESSED_SIGNED_RED_RGTC1_EXT = 0x8dbc;
export const GL_COMPRESSED_RED_GREEN_RGTC2_EXT = 0x8dbd;
export const GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT = 0x8dbe;

// EXT_texture_compression_bptc
export const GL_COMPRESSED_RGBA_BPTC_UNORM_EXT = 0x8e8c;
export const GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT = 0x8e8d;
export const GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT = 0x8e8e;
export const GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT = 0x8e8f;

// WEBGL_compressed_texture_s3tc_srgb
export const GL_COMPRESSED_SRGB_S3TC_DXT1_EXT = 0x8c4c;
export const GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT = 0x8c4d;
export const GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT = 0x8c4e;
export const GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT = 0x8c4f;

export const GL_EXTENSIONS_CONSTANTS = {
  RGB: GL_RGB,
  RGBA: GL_RGBA,
  RGBA4: GL_RGBA4,
  RGB5_A1: GL_RGB5_A1,
  RGBA8: GL_RGBA8,
  RGB565: GL_RGB565,
  RGBA32F: GL_RGBA32F,
  COMPRESSED_RGB_S3TC_DXT1_EXT: GL_COMPRESSED_RGB_S3TC_DXT1_EXT,
  COMPRESSED_RGBA_S3TC_DXT1_EXT: GL_COMPRESSED_RGBA_S3TC_DXT1_EXT,
  COMPRESSED_RGBA_S3TC_DXT3_EXT: GL_COMPRESSED_RGBA_S3TC_DXT3_EXT,
  COMPRESSED_RGBA_S3TC_DXT5_EXT: GL_COMPRESSED_RGBA_S3TC_DXT5_EXT,
  COMPRESSED_R11_EAC: GL_COMPRESSED_R11_EAC,
  COMPRESSED_SIGNED_R11_EAC: GL_COMPRESSED_SIGNED_R11_EAC,
  COMPRESSED_RG11_EAC: GL_COMPRESSED_RG11_EAC,
  COMPRESSED_SIGNED_RG11_EAC: GL_COMPRESSED_SIGNED_RG11_EAC,
  COMPRESSED_RGB8_ETC2: GL_COMPRESSED_RGB8_ETC2,
  COMPRESSED_RGBA8_ETC2_EAC: GL_COMPRESSED_RGBA8_ETC2_EAC,
  COMPRESSED_SRGB8_ETC2: GL_COMPRESSED_SRGB8_ETC2,
  COMPRESSED_SRGB8_ALPHA8_ETC2_EAC: GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC,
  COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2: GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2,
  COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2: GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2,
  COMPRESSED_RGB_PVRTC_4BPPV1_IMG: GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG,
  COMPRESSED_RGB_PVRTC_2BPPV1_IMG: GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG,
  COMPRESSED_RGBA_PVRTC_4BPPV1_IMG: GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG,
  COMPRESSED_RGBA_PVRTC_2BPPV1_IMG: GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG,
  COMPRESSED_RGB_ETC1_WEBGL: GL_COMPRESSED_RGB_ETC1_WEBGL,
  COMPRESSED_RGB_ATC_WEBGL: GL_COMPRESSED_RGB_ATC_WEBGL,
  COMPRESSED_RGBA_ATC_EXPLICIT_ALPHA_WEBGL: GL_COMPRESSED_RGBA_ATC_EXPLICIT_ALPHA_WEBGL,
  COMPRESSED_RGBA_ATC_INTERPOLATED_ALPHA_WEBGL: GL_COMPRESSED_RGBA_ATC_INTERPOLATED_ALPHA_WEBGL,
  COMPRESSED_RGBA_ASTC_4x4_KHR: GL_COMPRESSED_RGBA_ASTC_4x4_KHR,
  COMPRESSED_RGBA_ASTC_5x4_KHR: GL_COMPRESSED_RGBA_ASTC_5x4_KHR,
  COMPRESSED_RGBA_ASTC_5x5_KHR: GL_COMPRESSED_RGBA_ASTC_5x5_KHR,
  COMPRESSED_RGBA_ASTC_6x5_KHR: GL_COMPRESSED_RGBA_ASTC_6x5_KHR,
  COMPRESSED_RGBA_ASTC_6x6_KHR: GL_COMPRESSED_RGBA_ASTC_6x6_KHR,
  COMPRESSED_RGBA_ASTC_8x5_KHR: GL_COMPRESSED_RGBA_ASTC_8x5_KHR,
  COMPRESSED_RGBA_ASTC_8x6_KHR: GL_COMPRESSED_RGBA_ASTC_8x6_KHR,
  COMPRESSED_RGBA_ASTC_8x8_KHR: GL_COMPRESSED_RGBA_ASTC_8x8_KHR,
  COMPRESSED_RGBA_ASTC_10x5_KHR: GL_COMPRESSED_RGBA_ASTC_10x5_KHR,
  COMPRESSED_RGBA_ASTC_10x6_KHR: GL_COMPRESSED_RGBA_ASTC_10x6_KHR,
  COMPRESSED_RGBA_ASTC_10x8_KHR: GL_COMPRESSED_RGBA_ASTC_10x8_KHR,
  COMPRESSED_RGBA_ASTC_10x10_KHR: GL_COMPRESSED_RGBA_ASTC_10x10_KHR,
  COMPRESSED_RGBA_ASTC_12x10_KHR: GL_COMPRESSED_RGBA_ASTC_12x10_KHR,
  COMPRESSED_RGBA_ASTC_12x12_KHR: GL_COMPRESSED_RGBA_ASTC_12x12_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR,
  COMPRESSED_RED_RGTC1_EXT: GL_COMPRESSED_RED_RGTC1_EXT,
  COMPRESSED_SIGNED_RED_RGTC1_EXT: GL_COMPRESSED_SIGNED_RED_RGTC1_EXT,
  COMPRESSED_RED_GREEN_RGTC2_EXT: GL_COMPRESSED_RED_GREEN_RGTC2_EXT,
  COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT: GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT,
  COMPRESSED_RGBA_BPTC_UNORM_EXT: GL_COMPRESSED_RGBA_BPTC_UNORM_EXT,
  COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT: GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT,
  COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT: GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT,
  COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT: GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT,
  COMPRESSED_SRGB_S3TC_DXT1_EXT: GL_COMPRESSED_SRGB_S3TC_DXT1_EXT,
  COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT,
  COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT,
  COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT,
  // Deprecated legacy aliases with non-standard ASTC casing.
  COMPRESSED_RGBA_ASTC_4X4_KHR: GL_COMPRESSED_RGBA_ASTC_4x4_KHR,
  COMPRESSED_RGBA_ASTC_5X4_KHR: GL_COMPRESSED_RGBA_ASTC_5x4_KHR,
  COMPRESSED_RGBA_ASTC_5X5_KHR: GL_COMPRESSED_RGBA_ASTC_5x5_KHR,
  COMPRESSED_RGBA_ASTC_6X5_KHR: GL_COMPRESSED_RGBA_ASTC_6x5_KHR,
  COMPRESSED_RGBA_ASTC_6X6_KHR: GL_COMPRESSED_RGBA_ASTC_6x6_KHR,
  COMPRESSED_RGBA_ASTC_8X5_KHR: GL_COMPRESSED_RGBA_ASTC_8x5_KHR,
  COMPRESSED_RGBA_ASTC_8X6_KHR: GL_COMPRESSED_RGBA_ASTC_8x6_KHR,
  COMPRESSED_RGBA_ASTC_8X8_KHR: GL_COMPRESSED_RGBA_ASTC_8x8_KHR,
  COMPRESSED_RGBA_ASTC_10X5_KHR: GL_COMPRESSED_RGBA_ASTC_10x5_KHR,
  COMPRESSED_RGBA_ASTC_10X6_KHR: GL_COMPRESSED_RGBA_ASTC_10x6_KHR,
  COMPRESSED_RGBA_ASTC_10X8_KHR: GL_COMPRESSED_RGBA_ASTC_10x8_KHR,
  COMPRESSED_RGBA_ASTC_10X10_KHR: GL_COMPRESSED_RGBA_ASTC_10x10_KHR,
  COMPRESSED_RGBA_ASTC_12X10_KHR: GL_COMPRESSED_RGBA_ASTC_12x10_KHR,
  COMPRESSED_RGBA_ASTC_12X12_KHR: GL_COMPRESSED_RGBA_ASTC_12x12_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_4X4_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_5X4_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_5X5_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_6X5_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_6X6_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_8X5_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_8X6_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_8X8_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_10X5_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_10X6_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_10X8_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_10X10_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_12X10_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR,
  COMPRESSED_SRGB8_ALPHA8_ASTC_12X12_KHR: GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR
} as const;