File: //var/www/aspa/three/addons/renderers/webgpu/utils/WebGPUTextureUtils.js
import {
GPUTextureFormat, GPUAddressMode, GPUFilterMode, GPUTextureDimension, GPUFeatureName
} from './WebGPUConstants.js';
import {
CubeTexture, Texture,
NearestFilter, NearestMipmapNearestFilter, NearestMipmapLinearFilter,
RepeatWrapping, MirroredRepeatWrapping,
RGB_ETC2_Format, RGBA_ETC2_EAC_Format,
RGBAFormat, RedFormat, RGFormat, RGBA_S3TC_DXT1_Format, RGBA_S3TC_DXT3_Format, RGBA_S3TC_DXT5_Format, UnsignedByteType, FloatType, HalfFloatType, SRGBColorSpace, 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,
NeverCompare, AlwaysCompare, LessCompare, LessEqualCompare, EqualCompare, GreaterEqualCompare, GreaterCompare, NotEqualCompare
} from 'three';
import { CubeReflectionMapping, CubeRefractionMapping, EquirectangularReflectionMapping, EquirectangularRefractionMapping, DepthTexture } from 'three';
import WebGPUTexturePassUtils from './WebGPUTexturePassUtils.js';
const _compareToWebGPU = {
[ NeverCompare ]: 'never',
[ LessCompare ]: 'less',
[ EqualCompare ]: 'equal',
[ LessEqualCompare ]: 'less-equal',
[ GreaterCompare ]: 'greater',
[ GreaterEqualCompare ]: 'greater-equal',
[ AlwaysCompare ]: 'always',
[ NotEqualCompare ]: 'not-equal'
};
const _flipMap = [ 0, 1, 3, 2, 4, 5 ];
class WebGPUTextureUtils {
constructor( backend ) {
this.backend = backend;
this._passUtils = null;
this.defaultTexture = null;
this.defaultCubeTexture = null;
this.colorBuffer = null;
this.depthTexture = new DepthTexture();
this.depthTexture.name = 'depthBuffer';
}
createSampler( texture ) {
const backend = this.backend;
const device = backend.device;
const textureGPU = backend.get( texture );
const samplerDescriptorGPU = {
addressModeU: this._convertAddressMode( texture.wrapS ),
addressModeV: this._convertAddressMode( texture.wrapT ),
addressModeW: this._convertAddressMode( texture.wrapR ),
magFilter: this._convertFilterMode( texture.magFilter ),
minFilter: this._convertFilterMode( texture.minFilter ),
mipmapFilter: this._convertFilterMode( texture.minFilter ),
maxAnisotropy: texture.anisotropy
};
if ( texture.isDepthTexture && texture.compareFunction !== null ) {
samplerDescriptorGPU.compare = _compareToWebGPU[ texture.compareFunction ];
}
textureGPU.sampler = device.createSampler( samplerDescriptorGPU );
}
createDefaultTexture( texture ) {
let textureGPU;
if ( texture.isCubeTexture ) {
textureGPU = this._getDefaultCubeTextureGPU();
} else {
textureGPU = this._getDefaultTextureGPU();
}
this.backend.get( texture ).texture = textureGPU;
}
createTexture( texture, options = {} ) {
const backend = this.backend;
const textureData = backend.get( texture );
if ( textureData.initialized ) {
throw new Error( 'WebGPUTextureUtils: Texture already initialized.' );
}
if ( options.needsMipmaps === undefined ) options.needsMipmaps = false;
if ( options.levels === undefined ) options.levels = 1;
if ( options.depth === undefined ) options.depth = 1;
const { width, height, depth, levels } = options;
const dimension = this._getDimension( texture );
const format = texture.internalFormat || getFormat( texture, backend.device );
let sampleCount = options.sampleCount !== undefined ? options.sampleCount : 1;
if ( sampleCount > 1 ) {
// WebGPU only supports power-of-two sample counts and 2 is not a valid value
sampleCount = Math.pow( 2, Math.floor( Math.log2( sampleCount ) ) );
if ( sampleCount === 2 ) {
sampleCount = 4;
}
}
const primarySampleCount = texture.isRenderTargetTexture ? 1 : sampleCount;
let usage = GPUTextureUsage.TEXTURE_BINDING | GPUTextureUsage.COPY_DST | GPUTextureUsage.COPY_SRC;
if ( texture.isStorageTexture === true ) {
usage |= GPUTextureUsage.STORAGE_BINDING;
}
if ( texture.isCompressedTexture !== true ) {
usage |= GPUTextureUsage.RENDER_ATTACHMENT;
}
const textureDescriptorGPU = {
label: texture.name,
size: {
width: width,
height: height,
depthOrArrayLayers: depth,
},
mipLevelCount: levels,
sampleCount: primarySampleCount,
dimension: dimension,
format: format,
usage: usage
};
// texture creation
if ( texture.isVideoTexture ) {
const video = texture.source.data;
const videoFrame = new VideoFrame( video );
textureDescriptorGPU.size.width = videoFrame.displayWidth;
textureDescriptorGPU.size.height = videoFrame.displayHeight;
videoFrame.close();
textureData.externalTexture = video;
} else {
if ( format === undefined ) {
console.warn( 'WebGPURenderer: Texture format not supported.' );
return this.createDefaultTexture( texture );
}
textureData.texture = backend.device.createTexture( textureDescriptorGPU );
}
if ( texture.isRenderTargetTexture && sampleCount > 1 ) {
const msaaTextureDescriptorGPU = Object.assign( {}, textureDescriptorGPU );
msaaTextureDescriptorGPU.label = msaaTextureDescriptorGPU.label + '-msaa';
msaaTextureDescriptorGPU.sampleCount = sampleCount;
textureData.msaaTexture = backend.device.createTexture( msaaTextureDescriptorGPU );
}
textureData.initialized = true;
textureData.textureDescriptorGPU = textureDescriptorGPU;
}
destroyTexture( texture ) {
const backend = this.backend;
const textureData = backend.get( texture );
textureData.texture.destroy();
if ( textureData.msaaTexture !== undefined ) textureData.msaaTexture.destroy();
backend.delete( texture );
}
destroySampler( texture ) {
const backend = this.backend;
const textureData = backend.get( texture );
delete textureData.sampler;
}
generateMipmaps( texture ) {
const textureData = this.backend.get( texture );
if ( texture.isCubeTexture ) {
for ( let i = 0; i < 6; i ++ ) {
this._generateMipmaps( textureData.texture, textureData.textureDescriptorGPU, i );
}
} else {
this._generateMipmaps( textureData.texture, textureData.textureDescriptorGPU );
}
}
getColorBuffer() {
if ( this.colorBuffer ) this.colorBuffer.destroy();
const backend = this.backend;
const { width, height } = backend.getDrawingBufferSize();
this.colorBuffer = backend.device.createTexture( {
label: 'colorBuffer',
size: {
width: width,
height: height,
depthOrArrayLayers: 1
},
sampleCount: backend.parameters.sampleCount,
format: GPUTextureFormat.BGRA8Unorm,
usage: GPUTextureUsage.RENDER_ATTACHMENT | GPUTextureUsage.COPY_SRC
} );
return this.colorBuffer;
}
getDepthBuffer( depth = true, stencil = true ) {
const backend = this.backend;
const { width, height } = backend.getDrawingBufferSize();
const depthTexture = this.depthTexture;
const depthTextureGPU = backend.get( depthTexture ).texture;
let format, type;
if ( stencil ) {
format = DepthStencilFormat;
type = UnsignedInt248Type;
} else if ( depth ) {
format = DepthFormat;
type = UnsignedIntType;
}
if ( depthTextureGPU !== undefined ) {
if ( depthTexture.image.width === width && depthTexture.image.height === height && depthTexture.format === format && depthTexture.type === type ) {
return depthTextureGPU;
}
this.destroyTexture( depthTexture );
}
depthTexture.name = 'depthBuffer';
depthTexture.format = format;
depthTexture.type = type;
depthTexture.image.width = width;
depthTexture.image.height = height;
this.createTexture( depthTexture, { sampleCount: backend.parameters.sampleCount, width, height } );
return backend.get( depthTexture ).texture;
}
updateTexture( texture, options ) {
const textureData = this.backend.get( texture );
const { textureDescriptorGPU } = textureData;
if ( texture.isRenderTargetTexture || ( textureDescriptorGPU === undefined /* unsupported texture format */ ) )
return;
// transfer texture data
if ( texture.isDataTexture || texture.isData3DTexture ) {
this._copyBufferToTexture( options.image, textureData.texture, textureDescriptorGPU, 0, texture.flipY );
} else if ( texture.isDataArrayTexture ) {
for ( let i = 0; i < options.image.depth; i ++ ) {
this._copyBufferToTexture( options.image, textureData.texture, textureDescriptorGPU, i, texture.flipY, i );
}
} else if ( texture.isCompressedTexture ) {
this._copyCompressedBufferToTexture( texture.mipmaps, textureData.texture, textureDescriptorGPU );
} else if ( texture.isCubeTexture ) {
this._copyCubeMapToTexture( options.images, textureData.texture, textureDescriptorGPU, texture.flipY );
} else if ( texture.isVideoTexture ) {
const video = texture.source.data;
textureData.externalTexture = video;
} else {
this._copyImageToTexture( options.image, textureData.texture, textureDescriptorGPU, 0, texture.flipY );
}
//
textureData.version = texture.version;
if ( texture.onUpdate ) texture.onUpdate( texture );
}
async copyTextureToBuffer( texture, x, y, width, height ) {
const device = this.backend.device;
const textureData = this.backend.get( texture );
const textureGPU = textureData.texture;
const format = textureData.textureDescriptorGPU.format;
const bytesPerTexel = this._getBytesPerTexel( format );
let bytesPerRow = width * bytesPerTexel;
bytesPerRow = Math.ceil( bytesPerRow / 256 ) * 256; // Align to 256 bytes
const readBuffer = device.createBuffer(
{
size: width * height * bytesPerTexel,
usage: GPUBufferUsage.COPY_DST | GPUBufferUsage.MAP_READ
}
);
const encoder = device.createCommandEncoder();
encoder.copyTextureToBuffer(
{
texture: textureGPU,
origin: { x, y },
},
{
buffer: readBuffer,
bytesPerRow: bytesPerRow
},
{
width: width,
height: height
}
);
const typedArrayType = this._getTypedArrayType( format );
device.queue.submit( [ encoder.finish() ] );
await readBuffer.mapAsync( GPUMapMode.READ );
const buffer = readBuffer.getMappedRange();
return new typedArrayType( buffer );
}
_isEnvironmentTexture( texture ) {
const mapping = texture.mapping;
return ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping ) || ( mapping === CubeReflectionMapping || mapping === CubeRefractionMapping );
}
_getDefaultTextureGPU() {
let defaultTexture = this.defaultTexture;
if ( defaultTexture === null ) {
const texture = new Texture();
texture.minFilter = NearestFilter;
texture.magFilter = NearestFilter;
this.createTexture( texture, { width: 1, height: 1 } );
this.defaultTexture = defaultTexture = texture;
}
return this.backend.get( defaultTexture ).texture;
}
_getDefaultCubeTextureGPU() {
let defaultCubeTexture = this.defaultTexture;
if ( defaultCubeTexture === null ) {
const texture = new CubeTexture();
texture.minFilter = NearestFilter;
texture.magFilter = NearestFilter;
this.createTexture( texture, { width: 1, height: 1, depth: 6 } );
this.defaultCubeTexture = defaultCubeTexture = texture;
}
return this.backend.get( defaultCubeTexture ).texture;
}
_copyCubeMapToTexture( images, textureGPU, textureDescriptorGPU, flipY ) {
for ( let i = 0; i < 6; i ++ ) {
const image = images[ i ];
const flipIndex = flipY === true ? _flipMap[ i ] : i;
if ( image.isDataTexture ) {
this._copyBufferToTexture( image.image, textureGPU, textureDescriptorGPU, flipIndex, flipY );
} else {
this._copyImageToTexture( image, textureGPU, textureDescriptorGPU, flipIndex, flipY );
}
}
}
_copyImageToTexture( image, textureGPU, textureDescriptorGPU, originDepth, flipY ) {
const device = this.backend.device;
device.queue.copyExternalImageToTexture(
{
source: image
}, {
texture: textureGPU,
mipLevel: 0,
origin: { x: 0, y: 0, z: originDepth }
}, {
width: image.width,
height: image.height,
depthOrArrayLayers: 1
}
);
if ( flipY === true ) {
this._flipY( textureGPU, textureDescriptorGPU, originDepth );
}
}
_getPassUtils() {
let passUtils = this._passUtils;
if ( passUtils === null ) {
this._passUtils = passUtils = new WebGPUTexturePassUtils( this.backend.device );
}
return passUtils;
}
_generateMipmaps( textureGPU, textureDescriptorGPU, baseArrayLayer = 0 ) {
this._getPassUtils().generateMipmaps( textureGPU, textureDescriptorGPU, baseArrayLayer );
}
_flipY( textureGPU, textureDescriptorGPU, originDepth = 0 ) {
this._getPassUtils().flipY( textureGPU, textureDescriptorGPU, originDepth );
}
_copyBufferToTexture( image, textureGPU, textureDescriptorGPU, originDepth, flipY, depth = 0 ) {
// @TODO: Consider to use GPUCommandEncoder.copyBufferToTexture()
// @TODO: Consider to support valid buffer layouts with other formats like RGB
const device = this.backend.device;
const data = image.data;
const bytesPerTexel = this._getBytesPerTexel( textureDescriptorGPU.format );
const bytesPerRow = image.width * bytesPerTexel;
device.queue.writeTexture(
{
texture: textureGPU,
mipLevel: 0,
origin: { x: 0, y: 0, z: originDepth }
},
data,
{
offset: image.width * image.height * bytesPerTexel * depth,
bytesPerRow
},
{
width: image.width,
height: image.height,
depthOrArrayLayers: 1
} );
if ( flipY === true ) {
this._flipY( textureGPU, textureDescriptorGPU, originDepth );
}
}
_copyCompressedBufferToTexture( mipmaps, textureGPU, textureDescriptorGPU ) {
// @TODO: Consider to use GPUCommandEncoder.copyBufferToTexture()
const device = this.backend.device;
const blockData = this._getBlockData( textureDescriptorGPU.format );
for ( let i = 0; i < mipmaps.length; i ++ ) {
const mipmap = mipmaps[ i ];
const width = mipmap.width;
const height = mipmap.height;
const bytesPerRow = Math.ceil( width / blockData.width ) * blockData.byteLength;
device.queue.writeTexture(
{
texture: textureGPU,
mipLevel: i
},
mipmap.data,
{
offset: 0,
bytesPerRow
},
{
width: Math.ceil( width / blockData.width ) * blockData.width,
height: Math.ceil( height / blockData.width ) * blockData.width,
depthOrArrayLayers: 1
}
);
}
}
_getBlockData( format ) {
// this method is only relevant for compressed texture formats
if ( format === GPUTextureFormat.BC1RGBAUnorm || format === GPUTextureFormat.BC1RGBAUnormSRGB ) return { byteLength: 8, width: 4, height: 4 }; // DXT1
if ( format === GPUTextureFormat.BC2RGBAUnorm || format === GPUTextureFormat.BC2RGBAUnormSRGB ) return { byteLength: 16, width: 4, height: 4 }; // DXT3
if ( format === GPUTextureFormat.BC3RGBAUnorm || format === GPUTextureFormat.BC3RGBAUnormSRGB ) return { byteLength: 16, width: 4, height: 4 }; // DXT5
if ( format === GPUTextureFormat.BC4RUnorm || format === GPUTextureFormat.BC4RSNorm ) return { byteLength: 8, width: 4, height: 4 }; // RGTC1
if ( format === GPUTextureFormat.BC5RGUnorm || format === GPUTextureFormat.BC5RGSnorm ) return { byteLength: 16, width: 4, height: 4 }; // RGTC2
if ( format === GPUTextureFormat.BC6HRGBUFloat || format === GPUTextureFormat.BC6HRGBFloat ) return { byteLength: 16, width: 4, height: 4 }; // BPTC (float)
if ( format === GPUTextureFormat.BC7RGBAUnorm || format === GPUTextureFormat.BC7RGBAUnormSRGB ) return { byteLength: 16, width: 4, height: 4 }; // BPTC (unorm)
if ( format === GPUTextureFormat.ETC2RGB8Unorm || format === GPUTextureFormat.ETC2RGB8UnormSRGB ) return { byteLength: 8, width: 4, height: 4 };
if ( format === GPUTextureFormat.ETC2RGB8A1Unorm || format === GPUTextureFormat.ETC2RGB8A1UnormSRGB ) return { byteLength: 8, width: 4, height: 4 };
if ( format === GPUTextureFormat.ETC2RGBA8Unorm || format === GPUTextureFormat.ETC2RGBA8UnormSRGB ) return { byteLength: 16, width: 4, height: 4 };
if ( format === GPUTextureFormat.EACR11Unorm ) return { byteLength: 8, width: 4, height: 4 };
if ( format === GPUTextureFormat.EACR11Snorm ) return { byteLength: 8, width: 4, height: 4 };
if ( format === GPUTextureFormat.EACRG11Unorm ) return { byteLength: 16, width: 4, height: 4 };
if ( format === GPUTextureFormat.EACRG11Snorm ) return { byteLength: 16, width: 4, height: 4 };
if ( format === GPUTextureFormat.ASTC4x4Unorm || format === GPUTextureFormat.ASTC4x4UnormSRGB ) return { byteLength: 16, width: 4, height: 4 };
if ( format === GPUTextureFormat.ASTC5x4Unorm || format === GPUTextureFormat.ASTC5x4UnormSRGB ) return { byteLength: 16, width: 5, height: 4 };
if ( format === GPUTextureFormat.ASTC5x5Unorm || format === GPUTextureFormat.ASTC5x5UnormSRGB ) return { byteLength: 16, width: 5, height: 5 };
if ( format === GPUTextureFormat.ASTC6x5Unorm || format === GPUTextureFormat.ASTC6x5UnormSRGB ) return { byteLength: 16, width: 6, height: 5 };
if ( format === GPUTextureFormat.ASTC6x6Unorm || format === GPUTextureFormat.ASTC6x6UnormSRGB ) return { byteLength: 16, width: 6, height: 6 };
if ( format === GPUTextureFormat.ASTC8x5Unorm || format === GPUTextureFormat.ASTC8x5UnormSRGB ) return { byteLength: 16, width: 8, height: 5 };
if ( format === GPUTextureFormat.ASTC8x6Unorm || format === GPUTextureFormat.ASTC8x6UnormSRGB ) return { byteLength: 16, width: 8, height: 6 };
if ( format === GPUTextureFormat.ASTC8x8Unorm || format === GPUTextureFormat.ASTC8x8UnormSRGB ) return { byteLength: 16, width: 8, height: 8 };
if ( format === GPUTextureFormat.ASTC10x5Unorm || format === GPUTextureFormat.ASTC10x5UnormSRGB ) return { byteLength: 16, width: 10, height: 5 };
if ( format === GPUTextureFormat.ASTC10x6Unorm || format === GPUTextureFormat.ASTC10x6UnormSRGB ) return { byteLength: 16, width: 10, height: 6 };
if ( format === GPUTextureFormat.ASTC10x8Unorm || format === GPUTextureFormat.ASTC10x8UnormSRGB ) return { byteLength: 16, width: 10, height: 8 };
if ( format === GPUTextureFormat.ASTC10x10Unorm || format === GPUTextureFormat.ASTC10x10UnormSRGB ) return { byteLength: 16, width: 10, height: 10 };
if ( format === GPUTextureFormat.ASTC12x10Unorm || format === GPUTextureFormat.ASTC12x10UnormSRGB ) return { byteLength: 16, width: 12, height: 10 };
if ( format === GPUTextureFormat.ASTC12x12Unorm || format === GPUTextureFormat.ASTC12x12UnormSRGB ) return { byteLength: 16, width: 12, height: 12 };
}
_convertAddressMode( value ) {
let addressMode = GPUAddressMode.ClampToEdge;
if ( value === RepeatWrapping ) {
addressMode = GPUAddressMode.Repeat;
} else if ( value === MirroredRepeatWrapping ) {
addressMode = GPUAddressMode.MirrorRepeat;
}
return addressMode;
}
_convertFilterMode( value ) {
let filterMode = GPUFilterMode.Linear;
if ( value === NearestFilter || value === NearestMipmapNearestFilter || value === NearestMipmapLinearFilter ) {
filterMode = GPUFilterMode.Nearest;
}
return filterMode;
}
_getBytesPerTexel( format ) {
// 8-bit formats
if ( format === GPUTextureFormat.R8Unorm ||
format === GPUTextureFormat.R8Snorm ||
format === GPUTextureFormat.R8Uint ||
format === GPUTextureFormat.R8Sint ) return 1;
// 16-bit formats
if ( format === GPUTextureFormat.R16Uint ||
format === GPUTextureFormat.R16Sint ||
format === GPUTextureFormat.R16Float ||
format === GPUTextureFormat.RG8Unorm ||
format === GPUTextureFormat.RG8Snorm ||
format === GPUTextureFormat.RG8Uint ||
format === GPUTextureFormat.RG8Sint ) return 2;
// 32-bit formats
if ( format === GPUTextureFormat.R32Uint ||
format === GPUTextureFormat.R32Sint ||
format === GPUTextureFormat.R32Float ||
format === GPUTextureFormat.RG16Uint ||
format === GPUTextureFormat.RG16Sint ||
format === GPUTextureFormat.RG16Float ||
format === GPUTextureFormat.RGBA8Unorm ||
format === GPUTextureFormat.RGBA8UnormSRGB ||
format === GPUTextureFormat.RGBA8Snorm ||
format === GPUTextureFormat.RGBA8Uint ||
format === GPUTextureFormat.RGBA8Sint ||
format === GPUTextureFormat.BGRA8Unorm ||
format === GPUTextureFormat.BGRA8UnormSRGB ||
// Packed 32-bit formats
format === GPUTextureFormat.RGB9E5UFloat ||
format === GPUTextureFormat.RGB10A2Unorm ||
format === GPUTextureFormat.RG11B10UFloat ||
format === GPUTextureFormat.Depth32Float ||
format === GPUTextureFormat.Depth24Plus ||
format === GPUTextureFormat.Depth24PlusStencil8 ||
format === GPUTextureFormat.Depth32FloatStencil8 ) return 4;
// 64-bit formats
if ( format === GPUTextureFormat.RG32Uint ||
format === GPUTextureFormat.RG32Sint ||
format === GPUTextureFormat.RG32Float ||
format === GPUTextureFormat.RGBA16Uint ||
format === GPUTextureFormat.RGBA16Sint ||
format === GPUTextureFormat.RGBA16Float ) return 8;
// 128-bit formats
if ( format === GPUTextureFormat.RGBA32Uint ||
format === GPUTextureFormat.RGBA32Sint ||
format === GPUTextureFormat.RGBA32Float ) return 16;
}
_getTypedArrayType( format ) {
if ( format === GPUTextureFormat.R8Uint ) return Uint8Array;
if ( format === GPUTextureFormat.R8Sint ) return Int8Array;
if ( format === GPUTextureFormat.R8Unorm ) return Uint8Array;
if ( format === GPUTextureFormat.R8Snorm ) return Int8Array;
if ( format === GPUTextureFormat.RG8Uint ) return Uint8Array;
if ( format === GPUTextureFormat.RG8Sint ) return Int8Array;
if ( format === GPUTextureFormat.RG8Unorm ) return Uint8Array;
if ( format === GPUTextureFormat.RG8Snorm ) return Int8Array;
if ( format === GPUTextureFormat.RGBA8Uint ) return Uint8Array;
if ( format === GPUTextureFormat.RGBA8Sint ) return Int8Array;
if ( format === GPUTextureFormat.RGBA8Unorm ) return Uint8Array;
if ( format === GPUTextureFormat.RGBA8Snorm ) return Int8Array;
if ( format === GPUTextureFormat.R16Uint ) return Uint16Array;
if ( format === GPUTextureFormat.R16Sint ) return Int16Array;
if ( format === GPUTextureFormat.RG16Uint ) return Uint16Array;
if ( format === GPUTextureFormat.RG16Sint ) return Int16Array;
if ( format === GPUTextureFormat.RGBA16Uint ) return Uint16Array;
if ( format === GPUTextureFormat.RGBA16Sint ) return Int16Array;
if ( format === GPUTextureFormat.R16Float ) return Float32Array;
if ( format === GPUTextureFormat.RG16Float ) return Float32Array;
if ( format === GPUTextureFormat.RGBA16Float ) return Float32Array;
if ( format === GPUTextureFormat.R32Uint ) return Uint32Array;
if ( format === GPUTextureFormat.R32Sint ) return Int32Array;
if ( format === GPUTextureFormat.R32Float ) return Float32Array;
if ( format === GPUTextureFormat.RG32Uint ) return Uint32Array;
if ( format === GPUTextureFormat.RG32Sint ) return Int32Array;
if ( format === GPUTextureFormat.RG32Float ) return Float32Array;
if ( format === GPUTextureFormat.RGBA32Uint ) return Uint32Array;
if ( format === GPUTextureFormat.RGBA32Sint ) return Int32Array;
if ( format === GPUTextureFormat.RGBA32Float ) return Float32Array;
if ( format === GPUTextureFormat.BGRA8Unorm ) return Uint8Array;
if ( format === GPUTextureFormat.BGRA8UnormSRGB ) return Uint8Array;
if ( format === GPUTextureFormat.RGB10A2Unorm ) return Uint32Array;
if ( format === GPUTextureFormat.RGB9E5UFloat ) return Uint32Array;
if ( format === GPUTextureFormat.RG11B10UFloat ) return Uint32Array;
if ( format === GPUTextureFormat.Depth32Float ) return Float32Array;
if ( format === GPUTextureFormat.Depth24Plus ) return Uint32Array;
if ( format === GPUTextureFormat.Depth24PlusStencil8 ) return Uint32Array;
if ( format === GPUTextureFormat.Depth32FloatStencil8 ) return Float32Array;
}
_getDimension( texture ) {
let dimension;
if ( texture.isData3DTexture ) {
dimension = GPUTextureDimension.ThreeD;
} else {
dimension = GPUTextureDimension.TwoD;
}
return dimension;
}
}
export function getFormat( texture, device = null ) {
const format = texture.format;
const type = texture.type;
const colorSpace = texture.colorSpace;
let formatGPU;
if ( texture.isFramebufferTexture === true && texture.type === UnsignedByteType ) {
formatGPU = GPUTextureFormat.BGRA8Unorm;
} else if ( texture.isCompressedTexture === true ) {
switch ( format ) {
case RGBA_S3TC_DXT1_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.BC1RGBAUnormSRGB : GPUTextureFormat.BC1RGBAUnorm;
break;
case RGBA_S3TC_DXT3_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.BC2RGBAUnormSRGB : GPUTextureFormat.BC2RGBAUnorm;
break;
case RGBA_S3TC_DXT5_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.BC3RGBAUnormSRGB : GPUTextureFormat.BC3RGBAUnorm;
break;
case RGB_ETC2_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ETC2RGB8UnormSRGB : GPUTextureFormat.ETC2RGB8Unorm;
break;
case RGBA_ETC2_EAC_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ETC2RGBA8UnormSRGB : GPUTextureFormat.ETC2RGBA8Unorm;
break;
case RGBA_ASTC_4x4_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ASTC4x4UnormSRGB : GPUTextureFormat.ASTC4x4Unorm;
break;
case RGBA_ASTC_5x4_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ASTC5x4UnormSRGB : GPUTextureFormat.ASTC5x4Unorm;
break;
case RGBA_ASTC_5x5_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ASTC5x5UnormSRGB : GPUTextureFormat.ASTC5x5Unorm;
break;
case RGBA_ASTC_6x5_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ASTC6x5UnormSRGB : GPUTextureFormat.ASTC6x5Unorm;
break;
case RGBA_ASTC_6x6_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ASTC6x6UnormSRGB : GPUTextureFormat.ASTC6x6Unorm;
break;
case RGBA_ASTC_8x5_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ASTC8x5UnormSRGB : GPUTextureFormat.ASTC8x5Unorm;
break;
case RGBA_ASTC_8x6_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ASTC8x6UnormSRGB : GPUTextureFormat.ASTC8x6Unorm;
break;
case RGBA_ASTC_8x8_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ASTC8x8UnormSRGB : GPUTextureFormat.ASTC8x8Unorm;
break;
case RGBA_ASTC_10x5_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ASTC10x5UnormSRGB : GPUTextureFormat.ASTC10x5Unorm;
break;
case RGBA_ASTC_10x6_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ASTC10x6UnormSRGB : GPUTextureFormat.ASTC10x6Unorm;
break;
case RGBA_ASTC_10x8_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ASTC10x8UnormSRGB : GPUTextureFormat.ASTC10x8Unorm;
break;
case RGBA_ASTC_10x10_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ASTC10x10UnormSRGB : GPUTextureFormat.ASTC10x10Unorm;
break;
case RGBA_ASTC_12x10_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ASTC12x10UnormSRGB : GPUTextureFormat.ASTC12x10Unorm;
break;
case RGBA_ASTC_12x12_Format:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.ASTC12x12UnormSRGB : GPUTextureFormat.ASTC12x12Unorm;
break;
default:
console.error( 'WebGPURenderer: Unsupported texture format.', format );
}
} else {
switch ( format ) {
case RGBAFormat:
switch ( type ) {
case UnsignedByteType:
formatGPU = ( colorSpace === SRGBColorSpace ) ? GPUTextureFormat.RGBA8UnormSRGB : GPUTextureFormat.RGBA8Unorm;
break;
case HalfFloatType:
formatGPU = GPUTextureFormat.RGBA16Float;
break;
case FloatType:
formatGPU = GPUTextureFormat.RGBA32Float;
break;
default:
console.error( 'WebGPURenderer: Unsupported texture type with RGBAFormat.', type );
}
break;
case RedFormat:
switch ( type ) {
case UnsignedByteType:
formatGPU = GPUTextureFormat.R8Unorm;
break;
case HalfFloatType:
formatGPU = GPUTextureFormat.R16Float;
break;
case FloatType:
formatGPU = GPUTextureFormat.R32Float;
break;
default:
console.error( 'WebGPURenderer: Unsupported texture type with RedFormat.', type );
}
break;
case RGFormat:
switch ( type ) {
case UnsignedByteType:
formatGPU = GPUTextureFormat.RG8Unorm;
break;
case HalfFloatType:
formatGPU = GPUTextureFormat.RG16Float;
break;
case FloatType:
formatGPU = GPUTextureFormat.RG32Float;
break;
default:
console.error( 'WebGPURenderer: Unsupported texture type with RGFormat.', type );
}
break;
case DepthFormat:
switch ( type ) {
case UnsignedShortType:
formatGPU = GPUTextureFormat.Depth16Unorm;
break;
case UnsignedIntType:
formatGPU = GPUTextureFormat.Depth24Plus;
break;
case FloatType:
formatGPU = GPUTextureFormat.Depth32Float;
break;
default:
console.error( 'WebGPURenderer: Unsupported texture type with DepthFormat.', type );
}
break;
case DepthStencilFormat:
switch ( type ) {
case UnsignedInt248Type:
formatGPU = GPUTextureFormat.Depth24PlusStencil8;
break;
case FloatType:
if ( device && device.features.has( GPUFeatureName.Depth32FloatStencil8 ) === false ) {
console.error( 'WebGPURenderer: Depth textures with DepthStencilFormat + FloatType can only be used with the "depth32float-stencil8" GPU feature.' );
}
formatGPU = GPUTextureFormat.Depth32FloatStencil8;
break;
default:
console.error( 'WebGPURenderer: Unsupported texture type with DepthStencilFormat.', type );
}
break;
default:
console.error( 'WebGPURenderer: Unsupported texture format.', format );
}
}
return formatGPU;
}
export default WebGPUTextureUtils;