@xeokit/xeokit-sdk
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3D BIM IFC Viewer SDK for AEC engineering applications. Open Source JavaScript Toolkit based on pure WebGL for top performance, real-world coordinates and full double precision
244 lines (217 loc) • 9.94 kB
JavaScript
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,
LuminanceAlphaFormat,
LuminanceFormat,
RedFormat,
RGBFormat,
RGBAFormat,
AlphaFormat,
RedIntegerFormat,
RGFormat,
RGIntegerFormat,
RGBAIntegerFormat,
HalfFloatType,
FloatType,
UnsignedIntType,
IntType,
UnsignedShortType,
ShortType,
ByteType,
UnsignedInt248Type,
UnsignedShort5551Type,
UnsignedShort4444Type,
UnsignedByteType,
RGBA_BPTC_Format,
sRGBEncoding,
// _SRGBAFormat,
RepeatWrapping,
ClampToEdgeWrapping,
NearestFilter,
LinearFilter,
NearestMipMapNearestFilter,
LinearMipMapNearestFilter,
NearestMipMapLinearFilter, LinearMipMapLinearFilter
} from '../constants/constants.js';
import {getExtension} from "./getExtension.js";
/**
* @private
*/
function convertConstant(gl, constantVal, encoding = null) {
let extension;
const p = constantVal;
if (p === UnsignedByteType) return gl.UNSIGNED_BYTE;
if (p === UnsignedShort4444Type) return gl.UNSIGNED_SHORT_4_4_4_4;
if (p === UnsignedShort5551Type) return gl.UNSIGNED_SHORT_5_5_5_1;
if (p === ByteType) return gl.BYTE;
if (p === ShortType) return gl.SHORT;
if (p === UnsignedShortType) return gl.UNSIGNED_SHORT;
if (p === IntType) return gl.INT;
if (p === UnsignedIntType) return gl.UNSIGNED_INT;
if (p === FloatType) return gl.FLOAT;
if (p === HalfFloatType) {
return gl.HALF_FLOAT;
}
if (p === AlphaFormat) return gl.ALPHA;
if (p === RGBAFormat) return gl.RGBA;
if (p === LuminanceFormat) return gl.LUMINANCE;
if (p === LuminanceAlphaFormat) return gl.LUMINANCE_ALPHA;
if (p === DepthFormat) return gl.DEPTH_COMPONENT;
if (p === DepthStencilFormat) return gl.DEPTH_STENCIL;
if (p === RedFormat) return gl.RED;
if (p === RGBFormat) {
return gl.RGBA;
}
// WebGL2 formats.
if (p === RedIntegerFormat) return gl.RED_INTEGER;
if (p === RGFormat) return gl.RG;
if (p === RGIntegerFormat) return gl.RG_INTEGER;
if (p === RGBAIntegerFormat) return gl.RGBA_INTEGER;
// S3TC
if (p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format || p === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format) {
if (encoding === sRGBEncoding) {
const extension = getExtension(gl, 'WEBGL_compressed_texture_s3tc_srgb');
if (extension !== null) {
if (p === RGB_S3TC_DXT1_Format) return extension.COMPRESSED_SRGB_S3TC_DXT1_EXT;
if (p === RGBA_S3TC_DXT1_Format) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;
if (p === RGBA_S3TC_DXT3_Format) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT;
if (p === RGBA_S3TC_DXT5_Format) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;
} else {
return null;
}
} else {
extension = getExtension(gl, 'WEBGL_compressed_texture_s3tc');
if (extension !== null) {
if (p === RGB_S3TC_DXT1_Format) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;
if (p === RGBA_S3TC_DXT1_Format) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;
if (p === RGBA_S3TC_DXT3_Format) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;
if (p === RGBA_S3TC_DXT5_Format) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;
} else {
return null;
}
}
}
// PVRTC
if (p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format || p === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format) {
const extension = getExtension(gl, 'WEBGL_compressed_texture_pvrtc');
if (extension !== null) {
if (p === RGB_PVRTC_4BPPV1_Format) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
if (p === RGB_PVRTC_2BPPV1_Format) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
if (p === RGBA_PVRTC_4BPPV1_Format) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
if (p === RGBA_PVRTC_2BPPV1_Format) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
} else {
return null;
}
}
// ETC1
if (p === RGB_ETC1_Format) {
const extension = getExtension(gl, 'WEBGL_compressed_texture_etc1');
if (extension !== null) {
return extension.COMPRESSED_RGB_ETC1_WEBGL;
} else {
return null;
}
}
// ETC2
if (p === RGB_ETC2_Format || p === RGBA_ETC2_EAC_Format) {
const extension = getExtension(gl, 'WEBGL_compressed_texture_etc');
if (extension !== null) {
if (p === RGB_ETC2_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ETC2 : extension.COMPRESSED_RGB8_ETC2;
if (p === RGBA_ETC2_EAC_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ETC2_EAC : extension.COMPRESSED_RGBA8_ETC2_EAC;
} else {
return null;
}
}
// ASTC
if (p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format ||
p === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format ||
p === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format ||
p === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format ||
p === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format) {
const extension = getExtension(gl, 'WEBGL_compressed_texture_astc');
if (extension !== null) {
if (p === RGBA_ASTC_4x4_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR : extension.COMPRESSED_RGBA_ASTC_4x4_KHR;
if (p === RGBA_ASTC_5x4_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR : extension.COMPRESSED_RGBA_ASTC_5x4_KHR;
if (p === RGBA_ASTC_5x5_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR : extension.COMPRESSED_RGBA_ASTC_5x5_KHR;
if (p === RGBA_ASTC_6x5_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR : extension.COMPRESSED_RGBA_ASTC_6x5_KHR;
if (p === RGBA_ASTC_6x6_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR : extension.COMPRESSED_RGBA_ASTC_6x6_KHR;
if (p === RGBA_ASTC_8x5_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR : extension.COMPRESSED_RGBA_ASTC_8x5_KHR;
if (p === RGBA_ASTC_8x6_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR : extension.COMPRESSED_RGBA_ASTC_8x6_KHR;
if (p === RGBA_ASTC_8x8_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR : extension.COMPRESSED_RGBA_ASTC_8x8_KHR;
if (p === RGBA_ASTC_10x5_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR : extension.COMPRESSED_RGBA_ASTC_10x5_KHR;
if (p === RGBA_ASTC_10x6_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR : extension.COMPRESSED_RGBA_ASTC_10x6_KHR;
if (p === RGBA_ASTC_10x8_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR : extension.COMPRESSED_RGBA_ASTC_10x8_KHR;
if (p === RGBA_ASTC_10x10_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR : extension.COMPRESSED_RGBA_ASTC_10x10_KHR;
if (p === RGBA_ASTC_12x10_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR : extension.COMPRESSED_RGBA_ASTC_12x10_KHR;
if (p === RGBA_ASTC_12x12_Format) return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR : extension.COMPRESSED_RGBA_ASTC_12x12_KHR;
} else {
return null;
}
}
// BPTC
if (p === RGBA_BPTC_Format) {
const extension = getExtension(gl, 'EXT_texture_compression_bptc');
if (extension !== null) {
if (p === RGBA_BPTC_Format) {
return (encoding === sRGBEncoding) ? extension.COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT : extension.COMPRESSED_RGBA_BPTC_UNORM_EXT;
}
} else {
return null;
}
}
//
if (p === UnsignedInt248Type) {
return gl.UNSIGNED_INT_24_8;
}
if (p === RepeatWrapping) {
return gl.REPEAT;
}
if (p === ClampToEdgeWrapping) {
return gl.CLAMP_TO_EDGE;
}
if (p === NearestMipMapNearestFilter) {
return gl.NEAREST_MIPMAP_LINEAR;
}
if (p === NearestMipMapLinearFilter) {
return gl.NEAREST_MIPMAP_LINEAR;
}
if (p === LinearMipMapNearestFilter) {
return gl.LINEAR_MIPMAP_NEAREST;
}
if (p === LinearMipMapLinearFilter) {
return gl.LINEAR_MIPMAP_LINEAR;
}
if (p === NearestFilter) {
return gl.NEAREST;
}
if (p === LinearFilter) {
return gl.LINEAR;
}
return null;
}
export {convertConstant};