sdfsdfs

node_modules/pixi.js/lib/rendering/renderers/shared/shader/UboSystem.js

@@ -0,0 +1,77 @@
+'use strict';
+
+var unsafeEvalSupported = require('../../../../utils/browser/unsafeEvalSupported.js');
+var Buffer = require('../buffer/Buffer.js');
+var _const = require('../buffer/const.js');
+
+"use strict";
+class UboSystem {
+  constructor(adaptor) {
+    /** Cache of uniform buffer layouts and sync functions, so we don't have to re-create them */
+    this._syncFunctionHash = /* @__PURE__ */ Object.create(null);
+    this._adaptor = adaptor;
+    this._systemCheck();
+  }
+  /**
+   * Overridable function by `pixi.js/unsafe-eval` to silence
+   * throwing an error if platform doesn't support unsafe-evals.
+   * @private
+   */
+  _systemCheck() {
+    if (!unsafeEvalSupported.unsafeEvalSupported()) {
+      throw new Error("Current environment does not allow unsafe-eval, please use pixi.js/unsafe-eval module to enable support.");
+    }
+  }
+  ensureUniformGroup(uniformGroup) {
+    const uniformData = this.getUniformGroupData(uniformGroup);
+    uniformGroup.buffer || (uniformGroup.buffer = new Buffer.Buffer({
+      data: new Float32Array(uniformData.layout.size / 4),
+      usage: _const.BufferUsage.UNIFORM | _const.BufferUsage.COPY_DST
+    }));
+  }
+  getUniformGroupData(uniformGroup) {
+    return this._syncFunctionHash[uniformGroup._signature] || this._initUniformGroup(uniformGroup);
+  }
+  _initUniformGroup(uniformGroup) {
+    const uniformGroupSignature = uniformGroup._signature;
+    let uniformData = this._syncFunctionHash[uniformGroupSignature];
+    if (!uniformData) {
+      const elements = Object.keys(uniformGroup.uniformStructures).map((i) => uniformGroup.uniformStructures[i]);
+      const layout = this._adaptor.createUboElements(elements);
+      const syncFunction = this._generateUboSync(layout.uboElements);
+      uniformData = this._syncFunctionHash[uniformGroupSignature] = {
+        layout,
+        syncFunction
+      };
+    }
+    return this._syncFunctionHash[uniformGroupSignature];
+  }
+  _generateUboSync(uboElements) {
+    return this._adaptor.generateUboSync(uboElements);
+  }
+  syncUniformGroup(uniformGroup, data, offset) {
+    const uniformGroupData = this.getUniformGroupData(uniformGroup);
+    uniformGroup.buffer || (uniformGroup.buffer = new Buffer.Buffer({
+      data: new Float32Array(uniformGroupData.layout.size / 4),
+      usage: _const.BufferUsage.UNIFORM | _const.BufferUsage.COPY_DST
+    }));
+    data || (data = uniformGroup.buffer.data);
+    offset || (offset = 0);
+    uniformGroupData.syncFunction(uniformGroup.uniforms, data, offset);
+    return true;
+  }
+  updateUniformGroup(uniformGroup) {
+    if (uniformGroup.isStatic && !uniformGroup._dirtyId)
+      return false;
+    uniformGroup._dirtyId = 0;
+    const synced = this.syncUniformGroup(uniformGroup);
+    uniformGroup.buffer.update();
+    return synced;
+  }
+  destroy() {
+    this._syncFunctionHash = null;
+  }
+}
+
+exports.UboSystem = UboSystem;
+//# sourceMappingURL=UboSystem.js.map