sdfsdfs

node_modules/pixi.js/lib/rendering/renderers/gl/shader/GlProgram.js

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+'use strict';
+
+var createIdFromString = require('../../shared/utils/createIdFromString.js');
+var getMaxFragmentPrecision = require('./program/getMaxFragmentPrecision.js');
+var addProgramDefines = require('./program/preprocessors/addProgramDefines.js');
+var ensurePrecision = require('./program/preprocessors/ensurePrecision.js');
+var insertVersion = require('./program/preprocessors/insertVersion.js');
+var setProgramName = require('./program/preprocessors/setProgramName.js');
+var stripVersion = require('./program/preprocessors/stripVersion.js');
+
+"use strict";
+const processes = {
+  // strips any version headers..
+  stripVersion: stripVersion.stripVersion,
+  // adds precision string if not already present
+  ensurePrecision: ensurePrecision.ensurePrecision,
+  // add some defines if WebGL1 to make it more compatible with WebGL2 shaders
+  addProgramDefines: addProgramDefines.addProgramDefines,
+  // add the program name to the shader
+  setProgramName: setProgramName.setProgramName,
+  // add the version string to the shader header
+  insertVersion: insertVersion.insertVersion
+};
+const programCache = /* @__PURE__ */ Object.create(null);
+const _GlProgram = class _GlProgram {
+  /**
+   * Creates a shiny new GlProgram. Used by WebGL renderer.
+   * @param options - The options for the program.
+   */
+  constructor(options) {
+    options = { ..._GlProgram.defaultOptions, ...options };
+    const isES300 = options.fragment.indexOf("#version 300 es") !== -1;
+    const preprocessorOptions = {
+      stripVersion: isES300,
+      ensurePrecision: {
+        requestedFragmentPrecision: options.preferredFragmentPrecision,
+        requestedVertexPrecision: options.preferredVertexPrecision,
+        maxSupportedVertexPrecision: "highp",
+        maxSupportedFragmentPrecision: getMaxFragmentPrecision.getMaxFragmentPrecision()
+      },
+      setProgramName: {
+        name: options.name
+      },
+      addProgramDefines: isES300,
+      insertVersion: isES300
+    };
+    let fragment = options.fragment;
+    let vertex = options.vertex;
+    Object.keys(processes).forEach((processKey) => {
+      const processOptions = preprocessorOptions[processKey];
+      fragment = processes[processKey](fragment, processOptions, true);
+      vertex = processes[processKey](vertex, processOptions, false);
+    });
+    this.fragment = fragment;
+    this.vertex = vertex;
+    this._key = createIdFromString.createIdFromString(`${this.vertex}:${this.fragment}`, "gl-program");
+  }
+  /** destroys the program */
+  destroy() {
+    this.fragment = null;
+    this.vertex = null;
+    this._attributeData = null;
+    this._uniformData = null;
+    this._uniformBlockData = null;
+    this.transformFeedbackVaryings = null;
+  }
+  /**
+   * Helper function that creates a program for a given source.
+   * It will check the program cache if the program has already been created.
+   * If it has that one will be returned, if not a new one will be created and cached.
+   * @param options - The options for the program.
+   * @returns A program using the same source
+   */
+  static from(options) {
+    const key = `${options.vertex}:${options.fragment}`;
+    if (!programCache[key]) {
+      programCache[key] = new _GlProgram(options);
+    }
+    return programCache[key];
+  }
+};
+/** The default options used by the program. */
+_GlProgram.defaultOptions = {
+  preferredVertexPrecision: "highp",
+  preferredFragmentPrecision: "mediump"
+};
+let GlProgram = _GlProgram;
+
+exports.GlProgram = GlProgram;
+//# sourceMappingURL=GlProgram.js.map