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KTX2Loader: Support RGBA 16-bit unsigned normalized formats #33245

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Merged
Mugen87 merged 2 commits into from
Apr 1, 2026
+9 −2
Merged

KTX2Loader: Support RGBA 16-bit unsigned normalized formats #33245

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43b720e
KTX2Loader: Support RGBA 16-bit unsigned normalized textures
donmccurdy Mar 26, 2026
63a7b6a
Merge branch 'dev' into feat/ktx2loader-rgba16unorm
Mugen87 Apr 1, 2026
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10 changes: 8 additions & 2 deletions examples/jsm/loaders/KTX2Loader.js
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Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,8 @@ import {
SRGBColorSpace,
UnsignedByteType,
UnsignedInt5999Type,
UnsignedInt101111Type
UnsignedInt101111Type,
UnsignedShortType
} from 'three';
import { WorkerPool } from '../utils/WorkerPool.js';
import {
Expand Down Expand Up @@ -83,6 +84,7 @@ import {
VK_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG,
VK_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG,
VK_FORMAT_R16G16B16A16_SFLOAT,
VK_FORMAT_R16G16B16A16_UNORM,
VK_FORMAT_R16G16_SFLOAT,
VK_FORMAT_R16_SFLOAT,
VK_FORMAT_R32G32B32A32_SFLOAT,
Expand Down Expand Up @@ -964,6 +966,8 @@ const FORMAT_MAP = {
[ VK_FORMAT_R16G16_SFLOAT ]: RGFormat,
[ VK_FORMAT_R16_SFLOAT ]: RedFormat,

[ VK_FORMAT_R16G16B16A16_UNORM ]: RGBAFormat,

[ VK_FORMAT_R8G8B8A8_SRGB ]: RGBAFormat,
[ VK_FORMAT_R8G8B8A8_UNORM ]: RGBAFormat,
[ VK_FORMAT_R8G8_SRGB ]: RGFormat,
Expand Down Expand Up @@ -1022,6 +1026,8 @@ const TYPE_MAP = {
[ VK_FORMAT_R16G16_SFLOAT ]: HalfFloatType,
[ VK_FORMAT_R16_SFLOAT ]: HalfFloatType,

[ VK_FORMAT_R16G16B16A16_UNORM ]: UnsignedShortType,

[ VK_FORMAT_R8G8B8A8_SRGB ]: UnsignedByteType,
[ VK_FORMAT_R8G8B8A8_UNORM ]: UnsignedByteType,
[ VK_FORMAT_R8G8_SRGB ]: UnsignedByteType,
Expand Down Expand Up @@ -1149,7 +1155,7 @@ async function createRawTexture( container ) {

);

} else if ( TYPE_MAP[ vkFormat ] === HalfFloatType ) {
} else if ( TYPE_MAP[ vkFormat ] === HalfFloatType || TYPE_MAP[ vkFormat ] === UnsignedShortType ) {

data = new Uint16Array(

Expand Down
Binary file added examples/textures/ktx2/2d_rgba16unorm_linear.ktx2
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1 change: 1 addition & 0 deletions examples/webgl_loader_texture_ktx2.html
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Original file line number Diff line number Diff line change
Expand Up @@ -99,6 +99,7 @@
{ path: '2d_rgba8.ktx2' },
{ path: '2d_rgba8_linear.ktx2' },
{ path: '2d_rgba16_linear.ktx2' },
{ path: '2d_rgba16unorm_linear.ktx2' },
{ path: '2d_rgba32_linear.ktx2' },
{ path: '2d_rgb9e5_linear.ktx2' },
{ path: '2d_r11g11b10_linear.ktx2' },
Expand Down
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