@openhps/core
Version:
Open Hybrid Positioning System - Core component
231 lines (208 loc) • 11.4 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _constants = require("../../../constants.js");
/**
* A WebGL 2 backend utility module with common helpers.
*
* @private
*/
class WebGLUtils {
/**
* Constructs a new utility object.
*
* @param {WebGLBackend} backend - The WebGL 2 backend.
*/
constructor(backend) {
/**
* A reference to the WebGL 2 backend.
*
* @type {WebGLBackend}
*/
this.backend = backend;
/**
* A reference to the rendering context.
*
* @type {WebGL2RenderingContext}
*/
this.gl = this.backend.gl;
/**
* A reference to a backend module holding extension-related
* utility functions.
*
* @type {WebGLExtensions}
*/
this.extensions = backend.extensions;
}
/**
* Converts the given three.js constant into a WebGL constant.
* The method currently supports the conversion of texture formats
* and types.
*
* @param {number} p - The three.js constant.
* @param {string} [colorSpace=NoColorSpace] - The color space.
* @return {?number} The corresponding WebGL constant.
*/
convert(p, colorSpace = _constants.NoColorSpace) {
const {
gl,
extensions
} = this;
let extension;
if (p === _constants.UnsignedByteType) return gl.UNSIGNED_BYTE;
if (p === _constants.UnsignedShort4444Type) return gl.UNSIGNED_SHORT_4_4_4_4;
if (p === _constants.UnsignedShort5551Type) return gl.UNSIGNED_SHORT_5_5_5_1;
if (p === _constants.UnsignedInt5999Type) return gl.UNSIGNED_INT_5_9_9_9_REV;
if (p === _constants.ByteType) return gl.BYTE;
if (p === _constants.ShortType) return gl.SHORT;
if (p === _constants.UnsignedShortType) return gl.UNSIGNED_SHORT;
if (p === _constants.IntType) return gl.INT;
if (p === _constants.UnsignedIntType) return gl.UNSIGNED_INT;
if (p === _constants.FloatType) return gl.FLOAT;
if (p === _constants.HalfFloatType) {
return gl.HALF_FLOAT;
}
if (p === _constants.AlphaFormat) return gl.ALPHA;
if (p === _constants.RGBFormat) return gl.RGB;
if (p === _constants.RGBAFormat) return gl.RGBA;
if (p === _constants.LuminanceFormat) return gl.LUMINANCE;
if (p === _constants.LuminanceAlphaFormat) return gl.LUMINANCE_ALPHA;
if (p === _constants.DepthFormat) return gl.DEPTH_COMPONENT;
if (p === _constants.DepthStencilFormat) return gl.DEPTH_STENCIL;
// WebGL2 formats.
if (p === _constants.RedFormat) return gl.RED;
if (p === _constants.RedIntegerFormat) return gl.RED_INTEGER;
if (p === _constants.RGFormat) return gl.RG;
if (p === _constants.RGIntegerFormat) return gl.RG_INTEGER;
if (p === _constants.RGBAIntegerFormat) return gl.RGBA_INTEGER;
// S3TC
if (p === _constants.RGB_S3TC_DXT1_Format || p === _constants.RGBA_S3TC_DXT1_Format || p === _constants.RGBA_S3TC_DXT3_Format || p === _constants.RGBA_S3TC_DXT5_Format) {
if (colorSpace === _constants.SRGBColorSpace) {
extension = extensions.get('WEBGL_compressed_texture_s3tc_srgb');
if (extension !== null) {
if (p === _constants.RGB_S3TC_DXT1_Format) return extension.COMPRESSED_SRGB_S3TC_DXT1_EXT;
if (p === _constants.RGBA_S3TC_DXT1_Format) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;
if (p === _constants.RGBA_S3TC_DXT3_Format) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT;
if (p === _constants.RGBA_S3TC_DXT5_Format) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;
} else {
return null;
}
} else {
extension = extensions.get('WEBGL_compressed_texture_s3tc');
if (extension !== null) {
if (p === _constants.RGB_S3TC_DXT1_Format) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;
if (p === _constants.RGBA_S3TC_DXT1_Format) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;
if (p === _constants.RGBA_S3TC_DXT3_Format) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;
if (p === _constants.RGBA_S3TC_DXT5_Format) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;
} else {
return null;
}
}
}
// PVRTC
if (p === _constants.RGB_PVRTC_4BPPV1_Format || p === _constants.RGB_PVRTC_2BPPV1_Format || p === _constants.RGBA_PVRTC_4BPPV1_Format || p === _constants.RGBA_PVRTC_2BPPV1_Format) {
extension = extensions.get('WEBGL_compressed_texture_pvrtc');
if (extension !== null) {
if (p === _constants.RGB_PVRTC_4BPPV1_Format) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
if (p === _constants.RGB_PVRTC_2BPPV1_Format) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
if (p === _constants.RGBA_PVRTC_4BPPV1_Format) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
if (p === _constants.RGBA_PVRTC_2BPPV1_Format) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
} else {
return null;
}
}
// ETC
if (p === _constants.RGB_ETC1_Format || p === _constants.RGB_ETC2_Format || p === _constants.RGBA_ETC2_EAC_Format) {
extension = extensions.get('WEBGL_compressed_texture_etc');
if (extension !== null) {
if (p === _constants.RGB_ETC1_Format || p === _constants.RGB_ETC2_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ETC2 : extension.COMPRESSED_RGB8_ETC2;
if (p === _constants.RGBA_ETC2_EAC_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ETC2_EAC : extension.COMPRESSED_RGBA8_ETC2_EAC;
} else {
return null;
}
}
// ASTC
if (p === _constants.RGBA_ASTC_4x4_Format || p === _constants.RGBA_ASTC_5x4_Format || p === _constants.RGBA_ASTC_5x5_Format || p === _constants.RGBA_ASTC_6x5_Format || p === _constants.RGBA_ASTC_6x6_Format || p === _constants.RGBA_ASTC_8x5_Format || p === _constants.RGBA_ASTC_8x6_Format || p === _constants.RGBA_ASTC_8x8_Format || p === _constants.RGBA_ASTC_10x5_Format || p === _constants.RGBA_ASTC_10x6_Format || p === _constants.RGBA_ASTC_10x8_Format || p === _constants.RGBA_ASTC_10x10_Format || p === _constants.RGBA_ASTC_12x10_Format || p === _constants.RGBA_ASTC_12x12_Format) {
extension = extensions.get('WEBGL_compressed_texture_astc');
if (extension !== null) {
if (p === _constants.RGBA_ASTC_4x4_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR : extension.COMPRESSED_RGBA_ASTC_4x4_KHR;
if (p === _constants.RGBA_ASTC_5x4_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR : extension.COMPRESSED_RGBA_ASTC_5x4_KHR;
if (p === _constants.RGBA_ASTC_5x5_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR : extension.COMPRESSED_RGBA_ASTC_5x5_KHR;
if (p === _constants.RGBA_ASTC_6x5_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR : extension.COMPRESSED_RGBA_ASTC_6x5_KHR;
if (p === _constants.RGBA_ASTC_6x6_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR : extension.COMPRESSED_RGBA_ASTC_6x6_KHR;
if (p === _constants.RGBA_ASTC_8x5_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR : extension.COMPRESSED_RGBA_ASTC_8x5_KHR;
if (p === _constants.RGBA_ASTC_8x6_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR : extension.COMPRESSED_RGBA_ASTC_8x6_KHR;
if (p === _constants.RGBA_ASTC_8x8_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR : extension.COMPRESSED_RGBA_ASTC_8x8_KHR;
if (p === _constants.RGBA_ASTC_10x5_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR : extension.COMPRESSED_RGBA_ASTC_10x5_KHR;
if (p === _constants.RGBA_ASTC_10x6_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR : extension.COMPRESSED_RGBA_ASTC_10x6_KHR;
if (p === _constants.RGBA_ASTC_10x8_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR : extension.COMPRESSED_RGBA_ASTC_10x8_KHR;
if (p === _constants.RGBA_ASTC_10x10_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR : extension.COMPRESSED_RGBA_ASTC_10x10_KHR;
if (p === _constants.RGBA_ASTC_12x10_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR : extension.COMPRESSED_RGBA_ASTC_12x10_KHR;
if (p === _constants.RGBA_ASTC_12x12_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR : extension.COMPRESSED_RGBA_ASTC_12x12_KHR;
} else {
return null;
}
}
// BPTC
if (p === _constants.RGBA_BPTC_Format) {
extension = extensions.get('EXT_texture_compression_bptc');
if (extension !== null) {
if (p === _constants.RGBA_BPTC_Format) return colorSpace === _constants.SRGBColorSpace ? extension.COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT : extension.COMPRESSED_RGBA_BPTC_UNORM_EXT;
} else {
return null;
}
}
// RGTC
if (p === _constants.RED_RGTC1_Format || p === _constants.SIGNED_RED_RGTC1_Format || p === _constants.RED_GREEN_RGTC2_Format || p === _constants.SIGNED_RED_GREEN_RGTC2_Format) {
extension = extensions.get('EXT_texture_compression_rgtc');
if (extension !== null) {
if (p === _constants.RGBA_BPTC_Format) return extension.COMPRESSED_RED_RGTC1_EXT;
if (p === _constants.SIGNED_RED_RGTC1_Format) return extension.COMPRESSED_SIGNED_RED_RGTC1_EXT;
if (p === _constants.RED_GREEN_RGTC2_Format) return extension.COMPRESSED_RED_GREEN_RGTC2_EXT;
if (p === _constants.SIGNED_RED_GREEN_RGTC2_Format) return extension.COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT;
} else {
return null;
}
}
//
if (p === _constants.UnsignedInt248Type) {
return gl.UNSIGNED_INT_24_8;
}
// if "p" can't be resolved, assume the user defines a WebGL constant as a string (fallback/workaround for packed RGB formats)
return gl[p] !== undefined ? gl[p] : null;
}
/**
* This method can be used to synchronize the CPU with the GPU by waiting until
* ongoing GPU commands have been completed.
*
* @private
* @return {Promise} A promise that resolves when all ongoing GPU commands have been completed.
*/
_clientWaitAsync() {
const {
gl
} = this;
const sync = gl.fenceSync(gl.SYNC_GPU_COMMANDS_COMPLETE, 0);
gl.flush();
return new Promise((resolve, reject) => {
function test() {
const res = gl.clientWaitSync(sync, gl.SYNC_FLUSH_COMMANDS_BIT, 0);
if (res === gl.WAIT_FAILED) {
gl.deleteSync(sync);
reject();
return;
}
if (res === gl.TIMEOUT_EXPIRED) {
requestAnimationFrame(test);
return;
}
gl.deleteSync(sync);
resolve();
}
test();
});
}
}
var _default = exports.default = WebGLUtils;