Merge branch 'dev-2.0' into 2.0-modules

Author: limzykenneth

src/webgl/3d_primitives.js

@@ -0,0 +1,109 @@
+export class GeometryBufferCache {
+  constructor(renderer) {
+    this.renderer = renderer;
+    this.cache = {};
+  }
+
+  numCached() {
+    return Object.keys(this.cache).length;
+  }
+
+  isCached(gid) {
+    return this.cache[gid] !== undefined;
+  }
+
+  getGeometryByID(gid) {
+    return this.cache[gid]?.geometry;
+  }
+
+  getCached(model) {
+    return this.getCachedID(model.gid);
+  }
+
+  getCachedID(gid) {
+    return this.cache[gid];
+  }
+
+  ensureCached(geometry) {
+    const gid = geometry.gid;
+    if (!gid) {
+      throw new Error('The p5.Geometry you passed in has no gid property!');
+    }
+
+    if (this.isCached(geometry.gid)) return this.getCached(geometry);
+
+    const gl = this.renderer.GL;
+
+    //initialize the gl buffers for our geom groups
+    this.freeBuffers(gid);
+
+    if (Object.keys(this.cache).length > 1000) {
+      const key = Object.keys(this.cache)[0];
+      this.freeBuffers(key);
+    }
+
+    //create a new entry in our cache
+    const buffers = {};
+    this.cache[gid] = buffers;
+
+    buffers.geometry = geometry;
+
+    let indexBuffer = buffers.indexBuffer;
+
+    if (geometry.faces.length) {
+      // allocate space for faces
+      if (!indexBuffer) indexBuffer = buffers.indexBuffer = gl.createBuffer();
+      const vals = geometry.faces.flat();
+
+      // If any face references a vertex with an index greater than the maximum
+      // un-singed 16 bit integer, then we need to use a Uint32Array instead of a
+      // Uint16Array
+      const hasVertexIndicesOverMaxUInt16 = vals.some(v => v > 65535);
+      let type = hasVertexIndicesOverMaxUInt16 ? Uint32Array : Uint16Array;
+      this.renderer._bindBuffer(indexBuffer, gl.ELEMENT_ARRAY_BUFFER, vals, type);
+
+      // If we're using a Uint32Array for our indexBuffer we will need to pass a
+      // different enum value to WebGL draw triangles. This happens in
+      // the _drawElements function.
+      buffers.indexBufferType = hasVertexIndicesOverMaxUInt16
+        ? gl.UNSIGNED_INT
+        : gl.UNSIGNED_SHORT;
+    } else {
+      // the index buffer is unused, remove it
+      if (indexBuffer) {
+        gl.deleteBuffer(indexBuffer);
+        buffers.indexBuffer = null;
+      }
+    }
+
+    return buffers;
+  }
+
+  freeBuffers(gid) {
+    const buffers = this.cache[gid];
+    if (!buffers) {
+      return;
+    }
+
+    delete this.cache[gid];
+
+    const gl = this.renderer.GL;
+    if (buffers.indexBuffer) {
+      gl.deleteBuffer(buffers.indexBuffer);
+    }
+
+    function freeBuffers(defs) {
+      for (const def of defs) {
+        if (buffers[def.dst]) {
+          gl.deleteBuffer(buffers[def.dst]);
+          buffers[def.dst] = null;
+        }
+      }
+    }
+
+    // free all the buffers
+    freeBuffers(this.renderer.buffers.stroke);
+    freeBuffers(this.renderer.buffers.fill);
+    freeBuffers(this.renderer.buffers.user);
+  }
+}

src/webgl/GeometryBufferCache.js

@@ -108,9 +108,7 @@ class GeometryBuilder {
    * Adds geometry from the renderer's immediate mode into the builder's
    * combined geometry.
    */
-  addImmediate() {
-    const geometry = this.renderer.immediateMode.geometry;
-    const shapeMode = this.renderer.immediateMode.shapeMode;
+  addImmediate(geometry, shapeMode) {
     const faces = [];
 
     if (this.renderer.states.doFill) {
@@ -143,7 +141,7 @@ class GeometryBuilder {
    * combined geometry.
    */
   addRetained(geometry) {
-    this.addGeometry(geometry.model);
+    this.addGeometry(geometry);
   }
 
   /**