From 715e8daf7a534935d2e2d286200dc2f40e63a1a7 Mon Sep 17 00:00:00 2001
From: snn <sergey.nikonov@opencascade.com>
Date: Thu, 20 May 2021 17:31:05 +0300
Subject: [PATCH] 0032179: Visualization - OpenGl viewer clears QML controls
 content during redraw on touchscreen device

---
 src/OpenGl/OpenGl_View.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/OpenGl/OpenGl_View.cxx b/src/OpenGl/OpenGl_View.cxx
index 2900289ea5..64aaa2869b 100644
--- a/src/OpenGl/OpenGl_View.cxx
+++ b/src/OpenGl/OpenGl_View.cxx
@@ -2559,7 +2559,7 @@ bool OpenGl_View::blitBuffers (OpenGl_FrameBuffer*    theReadFbo,
   aCtx->SetColorMaskRGBA (NCollection_Vec4<bool> (true)); // force writes into all components, including alpha
   aCtx->core20fwd->glClearDepth (1.0);
   aCtx->core20fwd->glClearColor (0.0f, 0.0f, 0.0f, aCtx->caps->buffersOpaqueAlpha ? 1.0f : 0.0f);
-  aCtx->core20fwd->glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
+  aCtx->core20fwd->glClear (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
   aCtx->SetColorMask (true); // restore default alpha component write state
 
   const bool toApplyGamma = aCtx->ToRenderSRGB() != aCtx->IsFrameBufferSRGB();
-- 
2.39.5