From 59ec2ccec98845ed8f0f56b6bd36c649b2ed2b60 Mon Sep 17 00:00:00 2001
From: kgv <kgv@opencascade.com>
Date: Wed, 3 Jun 2020 12:20:49 +0300
Subject: [PATCH] 0031596: Visualization, OpenGl_Context - take
 GL_OES_texture_float extension into account for arbTexFloat flag

---
 src/OpenGl/OpenGl_Context.cxx | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/OpenGl/OpenGl_Context.cxx b/src/OpenGl/OpenGl_Context.cxx
index 9ae0f0ec41..36933dd4ff 100644
--- a/src/OpenGl/OpenGl_Context.cxx
+++ b/src/OpenGl/OpenGl_Context.cxx
@@ -1543,8 +1543,9 @@ void OpenGl_Context::init (const Standard_Boolean theIsCoreProfile)
     hasHighp = Standard_True;
   }
 
-  arbTexFloat = IsGlGreaterEqual (3, 0)
-             && FindProcShort (glTexImage3D);
+  arbTexFloat = (IsGlGreaterEqual (3, 0)
+              && FindProcShort (glTexImage3D))
+              || CheckExtension ("GL_OES_texture_float");
   hasTexFloatLinear = arbTexFloat
                    && CheckExtension ("GL_OES_texture_float_linear");