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Merged
merged 2 commits into from
Aug 10, 2025
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WebGLRenderer, KTX2Loader: Support R11G11B10 #31613

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9562e49
KTX2Loader: Support R11G11B10
donmccurdy Aug 9, 2025
e281c55
lint fix
donmccurdy Aug 9, 2025
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8 changes: 6 additions & 2 deletions examples/jsm/loaders/KTX2Loader.js
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,8 @@ import {
RedFormat,
SRGBColorSpace,
UnsignedByteType,
UnsignedInt5999Type
UnsignedInt5999Type,
UnsignedInt101111Type
} from 'three';
import { WorkerPool } from '../utils/WorkerPool.js';
import {
Expand Down Expand Up @@ -73,6 +74,7 @@ import {
VK_FORMAT_R8_SRGB,
VK_FORMAT_R8_UNORM,
VK_FORMAT_E5B9G9R9_UFLOAT_PACK32,
VK_FORMAT_B10G11R11_UFLOAT_PACK32,
VK_FORMAT_UNDEFINED
} from '../libs/ktx-parse.module.js';
import { ZSTDDecoder } from '../libs/zstddec.module.js';
Expand Down Expand Up @@ -941,6 +943,7 @@ const FORMAT_MAP = {
[ VK_FORMAT_R8_UNORM ]: RedFormat,

[ VK_FORMAT_E5B9G9R9_UFLOAT_PACK32 ]: RGBFormat,
[ VK_FORMAT_B10G11R11_UFLOAT_PACK32 ]: RGBFormat,

[ VK_FORMAT_ETC2_R8G8B8_SRGB_BLOCK ]: RGB_ETC2_Format,
[ VK_FORMAT_ETC2_R8G8B8A8_SRGB_BLOCK ]: RGBA_ETC2_EAC_Format,
Expand Down Expand Up @@ -985,6 +988,7 @@ const TYPE_MAP = {
[ VK_FORMAT_R8_UNORM ]: UnsignedByteType,

[ VK_FORMAT_E5B9G9R9_UFLOAT_PACK32 ]: UnsignedInt5999Type,
[ VK_FORMAT_B10G11R11_UFLOAT_PACK32 ]: UnsignedInt101111Type,

[ VK_FORMAT_ETC2_R8G8B8_SRGB_BLOCK ]: UnsignedByteType,
[ VK_FORMAT_ETC2_R8G8B8A8_SRGB_BLOCK ]: UnsignedByteType,
Expand Down Expand Up @@ -1078,7 +1082,7 @@ async function createRawTexture( container ) {

);

} else if ( TYPE_MAP[ vkFormat ] === UnsignedInt5999Type ) {
} else if ( TYPE_MAP[ vkFormat ] === UnsignedInt5999Type || TYPE_MAP[ vkFormat ] === UnsignedInt101111Type ) {

data = new Uint32Array(

Expand Down
Binary file added examples/textures/ktx2/2d_r11g11b10_linear.ktx2
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1 change: 1 addition & 0 deletions examples/webgl_loader_texture_ktx2.html
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Expand Up @@ -101,6 +101,7 @@
{ path: '2d_rgba16_linear.ktx2' },
{ path: '2d_rgba32_linear.ktx2' },
{ path: '2d_rgb9e5_linear.ktx2' },
{ path: '2d_r11g11b10_linear.ktx2' },
]
},
{
Expand Down
8 changes: 8 additions & 0 deletions src/constants.js
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Expand Up @@ -721,6 +721,14 @@ export const UnsignedInt248Type = 1020;
*/
export const UnsignedInt5999Type = 35902;

/**
* An unsigned int 10_11_11 (packed) data type for textures.
*
* @type {number}
* @constant
*/
export const UnsignedInt101111Type = 35899;

/**
* Discards the red, green and blue components and reads just the alpha component.
*
Expand Down
3 changes: 2 additions & 1 deletion src/extras/TextureUtils.js
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@@ -1,4 +1,4 @@
import { AlphaFormat, RedFormat, RedIntegerFormat, RGFormat, RGIntegerFormat, RGBFormat, RGBAFormat, RGBAIntegerFormat, RGB_S3TC_DXT1_Format, RGBA_S3TC_DXT1_Format, RGBA_S3TC_DXT3_Format, RGBA_S3TC_DXT5_Format, RGB_PVRTC_2BPPV1_Format, RGBA_PVRTC_2BPPV1_Format, RGB_PVRTC_4BPPV1_Format, RGBA_PVRTC_4BPPV1_Format, RGB_ETC1_Format, RGB_ETC2_Format, RGBA_ETC2_EAC_Format, RGBA_ASTC_4x4_Format, RGBA_ASTC_5x4_Format, RGBA_ASTC_5x5_Format, RGBA_ASTC_6x5_Format, RGBA_ASTC_6x6_Format, RGBA_ASTC_8x5_Format, RGBA_ASTC_8x6_Format, RGBA_ASTC_8x8_Format, RGBA_ASTC_10x5_Format, RGBA_ASTC_10x6_Format, RGBA_ASTC_10x8_Format, RGBA_ASTC_10x10_Format, RGBA_ASTC_12x10_Format, RGBA_ASTC_12x12_Format, RGBA_BPTC_Format, RGB_BPTC_SIGNED_Format, RGB_BPTC_UNSIGNED_Format, RED_RGTC1_Format, SIGNED_RED_RGTC1_Format, RED_GREEN_RGTC2_Format, SIGNED_RED_GREEN_RGTC2_Format, UnsignedByteType, ByteType, UnsignedShortType, ShortType, HalfFloatType, UnsignedShort4444Type, UnsignedShort5551Type, UnsignedIntType, IntType, FloatType, UnsignedInt5999Type } from '../constants.js';
import { AlphaFormat, RedFormat, RedIntegerFormat, RGFormat, RGIntegerFormat, RGBFormat, RGBAFormat, RGBAIntegerFormat, RGB_S3TC_DXT1_Format, RGBA_S3TC_DXT1_Format, RGBA_S3TC_DXT3_Format, RGBA_S3TC_DXT5_Format, RGB_PVRTC_2BPPV1_Format, RGBA_PVRTC_2BPPV1_Format, RGB_PVRTC_4BPPV1_Format, RGBA_PVRTC_4BPPV1_Format, RGB_ETC1_Format, RGB_ETC2_Format, RGBA_ETC2_EAC_Format, RGBA_ASTC_4x4_Format, RGBA_ASTC_5x4_Format, RGBA_ASTC_5x5_Format, RGBA_ASTC_6x5_Format, RGBA_ASTC_6x6_Format, RGBA_ASTC_8x5_Format, RGBA_ASTC_8x6_Format, RGBA_ASTC_8x8_Format, RGBA_ASTC_10x5_Format, RGBA_ASTC_10x6_Format, RGBA_ASTC_10x8_Format, RGBA_ASTC_10x10_Format, RGBA_ASTC_12x10_Format, RGBA_ASTC_12x12_Format, RGBA_BPTC_Format, RGB_BPTC_SIGNED_Format, RGB_BPTC_UNSIGNED_Format, RED_RGTC1_Format, SIGNED_RED_RGTC1_Format, RED_GREEN_RGTC2_Format, SIGNED_RED_GREEN_RGTC2_Format, UnsignedByteType, ByteType, UnsignedShortType, ShortType, HalfFloatType, UnsignedShort4444Type, UnsignedShort5551Type, UnsignedIntType, IntType, FloatType, UnsignedInt5999Type, UnsignedInt101111Type } from '../constants.js';

/**
* Scales the texture as large as possible within its surface without cropping
Expand Down Expand Up @@ -215,6 +215,7 @@ function getTextureTypeByteLength( type ) {
case FloatType:
return { byteLength: 4, components: 1 };
case UnsignedInt5999Type:
case UnsignedInt101111Type:
return { byteLength: 4, components: 3 };

}
Expand Down
1 change: 1 addition & 0 deletions src/renderers/webgl-fallback/utils/WebGLTextureUtils.js
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Expand Up @@ -222,6 +222,7 @@ class WebGLTextureUtils {
if ( glType === gl.UNSIGNED_SHORT_5_5_5_1 ) internalFormat = gl.RGB5_A1;
if ( glType === gl.UNSIGNED_SHORT_4_4_4_4 ) internalFormat = gl.RGB4;
if ( glType === gl.UNSIGNED_INT_5_9_9_9_REV ) internalFormat = gl.RGB9_E5;
if ( glType === gl.UNSIGNED_INT_10F_11F_11F_REV ) internalFormat = gl.R11F_G11F_B10F;

}

Expand Down
3 changes: 2 additions & 1 deletion src/renderers/webgl-fallback/utils/WebGLUtils.js
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@@ -1,4 +1,4 @@
import { RGBA_ASTC_4x4_Format, RGBA_ASTC_5x4_Format, RGBA_ASTC_5x5_Format, RGBA_ASTC_6x5_Format, RGBA_ASTC_6x6_Format, RGBA_ASTC_8x5_Format, RGBA_ASTC_8x6_Format, RGBA_ASTC_8x8_Format, RGBA_ASTC_10x5_Format, RGBA_ASTC_10x6_Format, RGBA_ASTC_10x8_Format, RGBA_ASTC_10x10_Format, RGBA_ASTC_12x10_Format, RGBA_ASTC_12x12_Format, RGB_ETC1_Format, RGB_ETC2_Format, RGBA_ETC2_EAC_Format, RGBA_PVRTC_2BPPV1_Format, RGBA_PVRTC_4BPPV1_Format, RGB_PVRTC_2BPPV1_Format, RGB_PVRTC_4BPPV1_Format, RGBA_S3TC_DXT5_Format, RGBA_S3TC_DXT3_Format, RGBA_S3TC_DXT1_Format, RGB_S3TC_DXT1_Format, DepthFormat, DepthStencilFormat, RedFormat, RGBFormat, RGBAFormat, AlphaFormat, RedIntegerFormat, RGFormat, RGIntegerFormat, RGBAIntegerFormat, HalfFloatType, FloatType, UnsignedIntType, IntType, UnsignedShortType, ShortType, ByteType, UnsignedInt248Type, UnsignedInt5999Type, UnsignedShort5551Type, UnsignedShort4444Type, UnsignedByteType, RGBA_BPTC_Format, RED_RGTC1_Format, SIGNED_RED_RGTC1_Format, RED_GREEN_RGTC2_Format, SIGNED_RED_GREEN_RGTC2_Format, SRGBTransfer, NoColorSpace } from '../../../constants.js';
import { RGBA_ASTC_4x4_Format, RGBA_ASTC_5x4_Format, RGBA_ASTC_5x5_Format, RGBA_ASTC_6x5_Format, RGBA_ASTC_6x6_Format, RGBA_ASTC_8x5_Format, RGBA_ASTC_8x6_Format, RGBA_ASTC_8x8_Format, RGBA_ASTC_10x5_Format, RGBA_ASTC_10x6_Format, RGBA_ASTC_10x8_Format, RGBA_ASTC_10x10_Format, RGBA_ASTC_12x10_Format, RGBA_ASTC_12x12_Format, RGB_ETC1_Format, RGB_ETC2_Format, RGBA_ETC2_EAC_Format, RGBA_PVRTC_2BPPV1_Format, RGBA_PVRTC_4BPPV1_Format, RGB_PVRTC_2BPPV1_Format, RGB_PVRTC_4BPPV1_Format, RGBA_S3TC_DXT5_Format, RGBA_S3TC_DXT3_Format, RGBA_S3TC_DXT1_Format, RGB_S3TC_DXT1_Format, DepthFormat, DepthStencilFormat, RedFormat, RGBFormat, RGBAFormat, AlphaFormat, RedIntegerFormat, RGFormat, RGIntegerFormat, RGBAIntegerFormat, HalfFloatType, FloatType, UnsignedIntType, IntType, UnsignedShortType, ShortType, ByteType, UnsignedInt248Type, UnsignedInt5999Type, UnsignedShort5551Type, UnsignedShort4444Type, UnsignedByteType, RGBA_BPTC_Format, RED_RGTC1_Format, SIGNED_RED_RGTC1_Format, RED_GREEN_RGTC2_Format, SIGNED_RED_GREEN_RGTC2_Format, SRGBTransfer, NoColorSpace, UnsignedInt101111Type } from '../../../constants.js';
import { ColorManagement } from '../../../math/ColorManagement.js';

/**
Expand Down Expand Up @@ -60,6 +60,7 @@ class WebGLUtils {
if ( p === UnsignedShort4444Type ) return gl.UNSIGNED_SHORT_4_4_4_4;
if ( p === UnsignedShort5551Type ) return gl.UNSIGNED_SHORT_5_5_5_1;
if ( p === UnsignedInt5999Type ) return gl.UNSIGNED_INT_5_9_9_9_REV;
if ( p === UnsignedInt101111Type ) return gl.UNSIGNED_INT_10F_11F_11F_REV;

if ( p === ByteType ) return gl.BYTE;
if ( p === ShortType ) return gl.SHORT;
Expand Down
1 change: 1 addition & 0 deletions src/renderers/webgl/WebGLTextures.js
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Expand Up @@ -201,6 +201,7 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
if ( glFormat === _gl.RGB ) {

if ( glType === _gl.UNSIGNED_INT_5_9_9_9_REV ) internalFormat = _gl.RGB9_E5;
if ( glType === _gl.UNSIGNED_INT_10F_11F_11F_REV ) internalFormat = _gl.R11F_G11F_B10F;

}

Expand Down
3 changes: 2 additions & 1 deletion src/renderers/webgl/WebGLUtils.js
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@@ -1,4 +1,4 @@
import { RGBA_ASTC_4x4_Format, RGBA_ASTC_5x4_Format, RGBA_ASTC_5x5_Format, RGBA_ASTC_6x5_Format, RGBA_ASTC_6x6_Format, RGBA_ASTC_8x5_Format, RGBA_ASTC_8x6_Format, RGBA_ASTC_8x8_Format, RGBA_ASTC_10x5_Format, RGBA_ASTC_10x6_Format, RGBA_ASTC_10x8_Format, RGBA_ASTC_10x10_Format, RGBA_ASTC_12x10_Format, RGBA_ASTC_12x12_Format, RGB_ETC1_Format, RGB_ETC2_Format, RGBA_ETC2_EAC_Format, RGBA_PVRTC_2BPPV1_Format, RGBA_PVRTC_4BPPV1_Format, RGB_PVRTC_2BPPV1_Format, RGB_PVRTC_4BPPV1_Format, RGBA_S3TC_DXT5_Format, RGBA_S3TC_DXT3_Format, RGBA_S3TC_DXT1_Format, RGB_S3TC_DXT1_Format, DepthFormat, DepthStencilFormat, RedFormat, RGBAFormat, AlphaFormat, RedIntegerFormat, RGFormat, RGIntegerFormat, RGBAIntegerFormat, HalfFloatType, FloatType, UnsignedIntType, IntType, UnsignedShortType, ShortType, ByteType, UnsignedInt248Type, UnsignedShort5551Type, UnsignedShort4444Type, UnsignedByteType, RGBA_BPTC_Format, RGB_BPTC_SIGNED_Format, RGB_BPTC_UNSIGNED_Format, RED_RGTC1_Format, SIGNED_RED_RGTC1_Format, RED_GREEN_RGTC2_Format, SIGNED_RED_GREEN_RGTC2_Format, NoColorSpace, SRGBTransfer, UnsignedInt5999Type, RGBFormat } from '../../constants.js';
import { RGBA_ASTC_4x4_Format, RGBA_ASTC_5x4_Format, RGBA_ASTC_5x5_Format, RGBA_ASTC_6x5_Format, RGBA_ASTC_6x6_Format, RGBA_ASTC_8x5_Format, RGBA_ASTC_8x6_Format, RGBA_ASTC_8x8_Format, RGBA_ASTC_10x5_Format, RGBA_ASTC_10x6_Format, RGBA_ASTC_10x8_Format, RGBA_ASTC_10x10_Format, RGBA_ASTC_12x10_Format, RGBA_ASTC_12x12_Format, RGB_ETC1_Format, RGB_ETC2_Format, RGBA_ETC2_EAC_Format, RGBA_PVRTC_2BPPV1_Format, RGBA_PVRTC_4BPPV1_Format, RGB_PVRTC_2BPPV1_Format, RGB_PVRTC_4BPPV1_Format, RGBA_S3TC_DXT5_Format, RGBA_S3TC_DXT3_Format, RGBA_S3TC_DXT1_Format, RGB_S3TC_DXT1_Format, DepthFormat, DepthStencilFormat, RedFormat, RGBAFormat, AlphaFormat, RedIntegerFormat, RGFormat, RGIntegerFormat, RGBAIntegerFormat, HalfFloatType, FloatType, UnsignedIntType, IntType, UnsignedShortType, ShortType, ByteType, UnsignedInt248Type, UnsignedShort5551Type, UnsignedShort4444Type, UnsignedByteType, RGBA_BPTC_Format, RGB_BPTC_SIGNED_Format, RGB_BPTC_UNSIGNED_Format, RED_RGTC1_Format, SIGNED_RED_RGTC1_Format, RED_GREEN_RGTC2_Format, SIGNED_RED_GREEN_RGTC2_Format, NoColorSpace, SRGBTransfer, UnsignedInt5999Type, RGBFormat, UnsignedInt101111Type } from '../../constants.js';
import { ColorManagement } from '../../math/ColorManagement.js';

function WebGLUtils( gl, extensions ) {
Expand All @@ -13,6 +13,7 @@ function WebGLUtils( gl, extensions ) {
if ( p === UnsignedShort4444Type ) return gl.UNSIGNED_SHORT_4_4_4_4;
if ( p === UnsignedShort5551Type ) return gl.UNSIGNED_SHORT_5_5_5_1;
if ( p === UnsignedInt5999Type ) return gl.UNSIGNED_INT_5_9_9_9_REV;
if ( p === UnsignedInt101111Type ) return gl.UNSIGNED_INT_10F_11F_11F_REV;

if ( p === ByteType ) return gl.BYTE;
if ( p === ShortType ) return gl.SHORT;
Expand Down
7 changes: 6 additions & 1 deletion src/renderers/webgpu/utils/WebGPUTextureUtils.js
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Expand Up @@ -13,7 +13,8 @@ import {
RGBAFormat, RGBFormat, RedFormat, RGFormat, RGBA_S3TC_DXT1_Format, RGBA_S3TC_DXT3_Format, RGBA_S3TC_DXT5_Format, UnsignedByteType, FloatType, HalfFloatType, SRGBTransfer, DepthFormat, DepthStencilFormat,
RGBA_ASTC_4x4_Format, RGBA_ASTC_5x4_Format, RGBA_ASTC_5x5_Format, RGBA_ASTC_6x5_Format, RGBA_ASTC_6x6_Format, RGBA_ASTC_8x5_Format, RGBA_ASTC_8x6_Format, RGBA_ASTC_8x8_Format, RGBA_ASTC_10x5_Format,
RGBA_ASTC_10x6_Format, RGBA_ASTC_10x8_Format, RGBA_ASTC_10x10_Format, RGBA_ASTC_12x10_Format, RGBA_ASTC_12x12_Format, UnsignedIntType, UnsignedShortType, UnsignedInt248Type, UnsignedInt5999Type,
NeverCompare, AlwaysCompare, LessCompare, LessEqualCompare, EqualCompare, GreaterEqualCompare, GreaterCompare, NotEqualCompare, IntType, RedIntegerFormat, RGIntegerFormat, RGBAIntegerFormat
NeverCompare, AlwaysCompare, LessCompare, LessEqualCompare, EqualCompare, GreaterEqualCompare, GreaterCompare, NotEqualCompare, IntType, RedIntegerFormat, RGIntegerFormat, RGBAIntegerFormat,
UnsignedInt101111Type
} from '../../../constants.js';
import { CubeTexture } from '../../../textures/CubeTexture.js';
import { DepthTexture } from '../../../textures/DepthTexture.js';
Expand Down Expand Up @@ -1202,6 +1203,10 @@ export function getFormat( texture, device = null ) {
formatGPU = GPUTextureFormat.RGB9E5UFloat;
break;

case UnsignedInt101111Type:
formatGPU = GPUTextureFormat.RG11B10UFloat;
break;

default:
console.error( 'WebGPURenderer: Unsupported texture type with RGBFormat.', type );

Expand Down
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