From 4bded02ad668e3efc193cd14904569cccae0aa84 Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Sun, 10 Jul 2016 14:49:41 +0900
Subject: [PATCH] graphics: Add a comment

---
 internal/graphics/command.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/internal/graphics/command.go b/internal/graphics/command.go
index 06ba84d49..df932163f 100644
--- a/internal/graphics/command.go
+++ b/internal/graphics/command.go
@@ -159,6 +159,7 @@ func (c *replacePixelsCommand) Exec(context *opengl.Context) error {
 	}
 	// This is necessary on Android. We can't call glClear just before glTexSubImage2D without
 	// glFlush. glTexSubImage2D didn't work without this hack at least on Nexus 5x (#211).
+	// This also happens when a fillCommand precedes a replacePixelsCommand.
 	// TODO: Can we have a better way like optimizing commands?
 	context.Flush()
 	context.BindTexture(c.dst.texture.native)