From: nds <nds@opencascade.com>
Date: Sat, 21 Mar 2020 17:13:55 +0000 (+0300)
Subject: 0031457: Visualization - interface to find an active frame buffer
X-Git-Url: http://git.dev.opencascade.org/gitweb/?a=commitdiff_plain;h=fa9ee1a41056c210cbe17016cbf1294bb5b34f56;p=occt-copy.git

0031457: Visualization - interface to find an active frame buffer
---

diff --git a/src/OpenGl/OpenGl_Context.hxx b/src/OpenGl/OpenGl_Context.hxx
index 4d89de5eda..96d02805bd 100644
--- a/src/OpenGl/OpenGl_Context.hxx
+++ b/src/OpenGl/OpenGl_Context.hxx
@@ -905,6 +905,18 @@ public: //! @name methods to alter or retrieve current state
   //! Bind default Vertex Array Object
   Standard_EXPORT void BindDefaultVao();
 
+  //! Active Frame Buffer Object.
+  const Handle(OpenGl_FrameBuffer)& ActiveFrameBuffer() const
+  {
+    return myActiveFbo;
+  }
+
+  //! Setup Active Frame Buffer Object.
+  Standard_EXPORT void SetActiveFrameBuffer (const Handle(OpenGl_FrameBuffer)& theFbo)
+  {
+    myActiveFbo = theFbo;
+  }
+
   //! Default Frame Buffer Object.
   const Handle(OpenGl_FrameBuffer)& DefaultFrameBuffer() const
   {
@@ -1142,6 +1154,7 @@ private: //! @name fields tracking current state
                                                    //!< currently active sampler objects
   Standard_Integer              myActiveMockTextures; //!< currently active mock sampler objects
   Handle(OpenGl_FrameBuffer)    myDefaultFbo;      //!< default Frame Buffer Object
+  Handle(OpenGl_FrameBuffer)    myActiveFbo;       //!< active Frame Buffer Object
   Handle(OpenGl_LineAttributes) myHatchStyles;     //!< resource holding predefined hatch styles patterns
   Handle(OpenGl_Texture)        myTextureRgbaBlack;//!< mock black texture returning (0, 0, 0, 0)
   Handle(OpenGl_Texture)        myTextureRgbaWhite;//!< mock white texture returning (1, 1, 1, 1)
diff --git a/src/OpenGl/OpenGl_FrameBuffer.cxx b/src/OpenGl/OpenGl_FrameBuffer.cxx
index a05e321660..00fd8c2f84 100644
--- a/src/OpenGl/OpenGl_FrameBuffer.cxx
+++ b/src/OpenGl/OpenGl_FrameBuffer.cxx
@@ -692,6 +692,8 @@ void OpenGl_FrameBuffer::BindBuffer (const Handle(OpenGl_Context)& theGlCtx)
 {
   theGlCtx->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, myGlFBufferId);
   theGlCtx->SetFrameBufferSRGB (true);
+  
+  theGlCtx->SetActiveFrameBuffer (this);
 }
 
 // =======================================================================