From 8566cfc227927d7b9646b0d660fdf254e4efea60 Mon Sep 17 00:00:00 2001
From: Olivier Guyot <olivier.guyot@camptocamp.com>
Date: Thu, 16 May 2019 23:10:16 +0200
Subject: [PATCH] Webgl points / get back the instructions array from the
 worker

This means we won't have to recreate a binary buffer (through a typed array)
on every `rebuildBuffer` call.
---
 src/ol/renderer/webgl/PointsLayer.js | 2 ++
 src/ol/worker/webgl.js               | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/ol/renderer/webgl/PointsLayer.js b/src/ol/renderer/webgl/PointsLayer.js
index 61b46878dc..90d0c2fb34 100644
--- a/src/ol/renderer/webgl/PointsLayer.js
+++ b/src/ol/renderer/webgl/PointsLayer.js
@@ -291,6 +291,8 @@ class WebGLPointsLayerRenderer extends WebGLLayerRenderer {
         // saves the projection transform for the current frame state
         this.renderTransform_ = projectionTransform;
         makeInverseTransform(this.invertRenderTransform_, this.renderTransform_);
+
+        this.renderInstructions_ = new Float32Array(event.data.renderInstructions);
       }
     }.bind(this));
   }
diff --git a/src/ol/worker/webgl.js b/src/ol/worker/webgl.js
index 174f7751f5..046bbb7ca9 100644
--- a/src/ol/worker/webgl.js
+++ b/src/ol/worker/webgl.js
@@ -30,8 +30,9 @@ onmessage = event => {
       type: 'buffers-generated',
       vertexBuffer: vertexBuffer.buffer,
       indexBuffer: indexBuffer.buffer,
+      renderInstructions: renderInstructions.buffer,
       projectionTransform
-    }, [vertexBuffer.buffer, indexBuffer.buffer]);
+    }, [vertexBuffer.buffer, indexBuffer.buffer, renderInstructions.buffer]);
   }
 };