From e4d279d8c7c9e1c20d5740d9717a04fab2c07c18 Mon Sep 17 00:00:00 2001
From: Can Bakiskan <canbakiskan@gmail.com>
Date: Thu, 22 Jul 2021 01:13:16 -0700
Subject: [PATCH] projector: draw transparent sprites correctly

---
 .../projector/vz_projector/scatterPlotVisualizerSprites.ts     | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tensorboard/plugins/projector/vz_projector/scatterPlotVisualizerSprites.ts b/tensorboard/plugins/projector/vz_projector/scatterPlotVisualizerSprites.ts
index 9939c07e5c..9bae770d49 100644
--- a/tensorboard/plugins/projector/vz_projector/scatterPlotVisualizerSprites.ts
+++ b/tensorboard/plugins/projector/vz_projector/scatterPlotVisualizerSprites.ts
@@ -122,6 +122,9 @@ function createFragmentShader() {
       // Coordinates of the vertex within the entire sprite image.
       vec2 coords =
         (gl_PointCoord + xyIndex) / vec2(spritesPerRow, spritesPerColumn);
+      if (texture2D(spriteTexture, coords).a==0.0) {
+        discard;
+      }
       gl_FragColor = vec4(vColor, 1.0) * texture2D(spriteTexture, coords);
     } else {
       bool inside = point_in_unit_circle(gl_PointCoord);