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- import {
- i,
- l,
- o
- } from "./chunk-LGW7TID4.js";
- import {
- r,
- t
- } from "./chunk-GZT4BVFP.js";
- // node_modules/@arcgis/core/views/webgl/capabilities.js
- var n;
- var a;
- function l2(t2) {
- const e = i(t2);
- for (; e.length > 1; ) {
- const t3 = u(e.shift());
- if (t3.available)
- return t3;
- }
- return u(e.shift());
- }
- function u(t2) {
- switch (t2) {
- case o.WEBGL1:
- return i2();
- case o.WEBGL2:
- return p();
- }
- }
- function i2() {
- return n || (n = x()), n;
- }
- function p() {
- return a || (a = d()), a;
- }
- var f = class {
- constructor() {
- this.available = false, this.majorPerformanceCaveat = false, this.maxTextureSize = 0, this.supportsVertexShaderSamplers = false, this.supportsHighPrecisionFragment = false, this.supportsElementIndexUint = false, this.supportsStandardDerivatives = false, this.supportsInstancedArrays = false, this.supportsTextureFloat = false, this.supportsTextureHalfFloat = false, this.supportsColorBufferFloat = false, this.supportsColorBufferFloatBlend = false, this.supportsColorBufferHalfFloat = false;
- }
- };
- var c = class extends f {
- constructor() {
- super(...arguments), this.type = o.WEBGL1;
- }
- };
- var E = class extends f {
- constructor() {
- super(...arguments), this.type = o.WEBGL2, this.supportsElementIndexUint = true, this.supportsStandardDerivatives = true, this.supportsInstancedArrays = true, this.supportsTextureFloat = true, this.supportsTextureHalfFloat = true;
- }
- };
- function _(r2, n2) {
- if (r2 === o.WEBGL1 && typeof WebGLRenderingContext === void 0 || r2 === o.WEBGL2 && typeof WebGL2RenderingContext === void 0)
- return null;
- const a2 = document.createElement("canvas");
- if (!a2)
- return null;
- let l3 = l(a2, r2, { failIfMajorPerformanceCaveat: true });
- if (t(l3) && (l3 = l(a2, r2), r(l3) && (n2.majorPerformanceCaveat = true)), t(l3))
- return l3;
- if (r2 === o.WEBGL1) {
- const t2 = l3.getParameter(l3.VERSION)?.match(/^WebGL\s+([\d.]*)/);
- if (t2) {
- const e = parseFloat(t2[1]);
- n2.available = e >= 0.94;
- }
- } else
- n2.available = true;
- n2.maxTextureSize = l3.getParameter(l3.MAX_TEXTURE_SIZE), n2.supportsVertexShaderSamplers = l3.getParameter(l3.MAX_VERTEX_TEXTURE_IMAGE_UNITS) > 0;
- const u2 = l3.getShaderPrecisionFormat(l3.FRAGMENT_SHADER, l3.HIGH_FLOAT);
- return u2 && (n2.supportsHighPrecisionFragment = u2.precision > 0), l3;
- }
- function x() {
- const e = new c(), r2 = _(o.WEBGL1, e);
- return t(r2) || (e.supportsElementIndexUint = r2.getExtension("OES_element_index_uint") !== null, e.supportsStandardDerivatives = r2.getExtension("OES_standard_derivatives") !== null, e.supportsInstancedArrays = r2.getExtension("ANGLE_instanced_arrays") !== null, e.supportsTextureFloat = r2.getExtension("OES_texture_float") !== null, e.supportsTextureHalfFloat = r2.getExtension("OES_texture_half_float") !== null, e.supportsColorBufferFloat = r2.getExtension("WEBGL_color_buffer_float") !== null, e.supportsColorBufferFloatBlend = r2.getExtension("EXT_float_blend") !== null, e.supportsColorBufferHalfFloat = r2.getExtension("EXT_color_buffer_half_float") !== null), e;
- }
- function d() {
- const e = new E(), r2 = _(o.WEBGL2, e);
- return t(r2) || (e.supportsColorBufferFloat = r2.getExtension("EXT_color_buffer_float") !== null, e.supportsColorBufferFloatBlend = r2.getExtension("EXT_float_blend") !== null, e.supportsColorBufferHalfFloat = e.supportsColorBufferFloat || r2.getExtension("EXT_color_buffer_half_float") !== null), e;
- }
- export {
- l2 as l
- };
- //# sourceMappingURL=chunk-4E6K4P67.js.map
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