From: dbp <dbp@opencascade.com>
Date: Wed, 1 Apr 2015 13:19:20 +0000 (+0300)
Subject: 0025964: Visualization, TKOpenGl - compile RayTracing shader without texturing when... 
X-Git-Tag: V6_9_0_beta1~28
X-Git-Url: http://git.dev.opencascade.org/gitweb/?a=commitdiff_plain;h=f483f2ed11a031c026c3e46f97180248d4bf93da;p=occt-copy.git

0025964: Visualization, TKOpenGl - compile RayTracing shader without texturing when no textures in use
---

diff --git a/src/OpenGl/OpenGl_SceneGeometry.hxx b/src/OpenGl/OpenGl_SceneGeometry.hxx
index dc52558d5c..60740aef84 100755
--- a/src/OpenGl/OpenGl_SceneGeometry.hxx
+++ b/src/OpenGl/OpenGl_SceneGeometry.hxx
@@ -304,7 +304,7 @@ public: //! @name methods related to texture management
   }
 
   //! Checks if scene contains textured objects.
-  Standard_Integer HasTextures() const
+  Standard_Boolean HasTextures() const
   {
     return !myTextures.IsEmpty();
   }
diff --git a/src/OpenGl/OpenGl_View.hxx b/src/OpenGl/OpenGl_View.hxx
index 03dc77af3a..d49f0587b1 100644
--- a/src/OpenGl/OpenGl_View.hxx
+++ b/src/OpenGl/OpenGl_View.hxx
@@ -429,14 +429,18 @@ protected: //! @name data types related to ray-tracing
     //! Actual ray-tracing depth (number of ray bounces).
     Standard_Integer NbBounces;
 
-    //! Sets light propagation through transparent media.
+    //! Enables/disables light propagation through transparent media.
     Standard_Boolean TransparentShadows;
 
+    //! Enables/disables the use of OpenGL bindless textures.
+    Standard_Boolean UseBindlessTextures;
+
     //! Creates default compile-time ray-tracing parameters.
     RaytracingParams()
     : StackSize (THE_DEFAULT_STACK_SIZE),
       NbBounces (THE_DEFAULT_NB_BOUNCES),
-      TransparentShadows (Standard_False)
+      TransparentShadows (Standard_False),
+      UseBindlessTextures (Standard_False)
     {
       //
     }
diff --git a/src/OpenGl/OpenGl_View_Raytrace.cxx b/src/OpenGl/OpenGl_View_Raytrace.cxx
index 7cde775d43..757f0b297d 100644
--- a/src/OpenGl/OpenGl_View_Raytrace.cxx
+++ b/src/OpenGl/OpenGl_View_Raytrace.cxx
@@ -1011,9 +1011,9 @@ TCollection_AsciiString OpenGl_View::generateShaderPrefix (const Handle(OpenGl_C
     aPrefixString += TCollection_AsciiString ("\n#define TRANSPARENT_SHADOWS");
   }
 
-  // If OpenGL driver supports bindless textures,
-  // activate texturing in ray-tracing mode
-  if (theGlContext->arbTexBindless != NULL)
+  // If OpenGL driver supports bindless textures and texturing
+  // is actually used, activate texturing in ray-tracing mode
+  if (myRaytraceParameters.UseBindlessTextures && theGlContext->arbTexBindless != NULL)
   {
     aPrefixString += TCollection_AsciiString ("\n#define USE_TEXTURES") +
       TCollection_AsciiString ("\n#define MAX_TEX_NUMBER ") + TCollection_AsciiString (OpenGl_RaytraceGeometry::MAX_TEX_NUMBER);
@@ -1153,6 +1153,12 @@ Standard_Boolean OpenGl_View::initRaytraceResources (const Graphic3d_CView& theC
       aToRebuildShaders = Standard_True;
     }
 
+    if (myRaytraceGeometry.HasTextures() != myRaytraceParameters.UseBindlessTextures)
+    {
+      myRaytraceParameters.UseBindlessTextures = myRaytraceGeometry.HasTextures();
+      aToRebuildShaders = Standard_True;
+    }
+
     if (theCView.RenderParams.IsTransparentShadowEnabled != myRaytraceParameters.TransparentShadows)
     {
       myRaytraceParameters.TransparentShadows = theCView.RenderParams.IsTransparentShadowEnabled;