From 726b5d9e920db065d98ad1b79fc2ab1beb24ba49 Mon Sep 17 00:00:00 2001
From: kgv <kgv@opencascade.com>
Date: Thu, 1 Mar 2018 20:10:46 +0300
Subject: [PATCH] 0029529: Volume Rendering - crash on re-displaying the object

Added missing getters: OpenGl_TextureBufferArb::TextureFormat() and OpenGl_ShaderManager::OitState().
---
 src/OpenGl/OpenGl_ShaderManager.hxx    |  3 +++
 src/OpenGl/OpenGl_TextureBufferArb.hxx | 14 +++++---------
 2 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/src/OpenGl/OpenGl_ShaderManager.hxx b/src/OpenGl/OpenGl_ShaderManager.hxx
index 17270303c7..7c423e0066 100644
--- a/src/OpenGl/OpenGl_ShaderManager.hxx
+++ b/src/OpenGl/OpenGl_ShaderManager.hxx
@@ -289,6 +289,9 @@ public:
 
 public:
 
+  //! Returns state of OIT uniforms.
+  const OpenGl_OitState& OitState() const { return myOitState; }
+
   //! Set the state of OIT rendering pass.
   //! @param theToEnableOitWrite [in] flag indicating whether the special output should be written for OIT algorithm.
   //! @param theDepthFactor [in] the scalar factor of depth influence to the fragment's coverage.
diff --git a/src/OpenGl/OpenGl_TextureBufferArb.hxx b/src/OpenGl/OpenGl_TextureBufferArb.hxx
index 9ffcb5de76..fe8bf81097 100644
--- a/src/OpenGl/OpenGl_TextureBufferArb.hxx
+++ b/src/OpenGl/OpenGl_TextureBufferArb.hxx
@@ -30,7 +30,7 @@
 //! are declared in this class.
 class OpenGl_TextureBufferArb : public OpenGl_VertexBuffer
 {
-
+  DEFINE_STANDARD_RTTIEXT(OpenGl_TextureBufferArb, OpenGl_VertexBuffer)
 public:
 
   //! Helpful constants
@@ -99,20 +99,16 @@ public:
                                       const Graphic3d_TextureUnit   theTextureUnit) const;
 
   //! Returns name of TBO.
-  GLuint TextureId() const
-  {
-    return myTextureId;
-  }
+  GLuint TextureId() const { return myTextureId; }
+
+  //! Returns internal texture format.
+  GLenum TextureFormat() const { return myTexFormat; }
 
 protected:
 
   GLuint myTextureId; //!< texture id
   GLenum myTexFormat; //!< internal texture format
 
-public:
-
-  DEFINE_STANDARD_RTTIEXT(OpenGl_TextureBufferArb,OpenGl_VertexBuffer) // Type definition
-
 };
 
 DEFINE_STANDARD_HANDLE(OpenGl_TextureBufferArb, OpenGl_VertexBuffer)