47 lines
1.2 KiB
JavaScript
47 lines
1.2 KiB
JavaScript
export const TOON_SHADER_PREVIEW_EXTENSIONS = ['OES_texture_float_linear'];
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export const TOON_SHADER_THUMBNAIL_EXTENSIONS = [];
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export const isWebGLAvailable = (() => {
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const canvas = document.createElement('canvas');
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if (!window.WebGLRenderingContext) return false;
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const webglContext = canvas.getContext('webgl') || canvas.getContext('experimental-webgl');
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return Boolean(webglContext);
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})();
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export const supportedExtensions = (() => {
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if (!isWebGLAvailable) return [];
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const canvas = document.createElement('canvas');
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const webglContext = canvas.getContext('webgl') || canvas.getContext('experimental-webgl');
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return webglContext.getSupportedExtensions();
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})();
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export const hasExtensionsFor = ((object) => {
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const enabled = {};
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loop: for (const key in object) {
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if (!isWebGLAvailable) {
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enabled[key] = false;
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continue loop;
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}
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const neededExtensions = object[key];
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for (const neededExtension of neededExtensions) {
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if (supportedExtensions.indexOf(neededExtension) === -1) {
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enabled[key] = false;
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continue loop;
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}
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}
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enabled[key] = true;
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}
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return enabled;
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})({
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toonShaderPreview: TOON_SHADER_PREVIEW_EXTENSIONS,
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toonShaderThumbnail: TOON_SHADER_THUMBNAIL_EXTENSIONS
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});
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