From ca9f3f2d92d4fefd31c0e553a28336c5ec238323 Mon Sep 17 00:00:00 2001
From: KIU Shueng Chuan <nixchuan@gmail.com>
Date: Mon, 11 Jan 2021 23:24:06 +0800
Subject: [PATCH] fix: glViewPort() takes integral arguments

---
 pyqtgraph/widgets/RawImageWidget.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pyqtgraph/widgets/RawImageWidget.py b/pyqtgraph/widgets/RawImageWidget.py
index 43eafeb6..819a17c3 100644
--- a/pyqtgraph/widgets/RawImageWidget.py
+++ b/pyqtgraph/widgets/RawImageWidget.py
@@ -142,7 +142,9 @@ if HAVE_OPENGL:
             if not self.uploaded:
                 self.uploadTexture()
 
-            glViewport(0, 0, self.width() * self.devicePixelRatio(), self.height() * self.devicePixelRatio())
+            dpr = self.devicePixelRatio()
+            vp = (0, 0, int(self.width() * dpr), int(self.height() * dpr))
+            glViewport(*vp)
             glEnable(GL_TEXTURE_2D)
             glBindTexture(GL_TEXTURE_2D, self.texture)
             glColor4f(1, 1, 1, 1)