025306: Visualization, TKOpenGl - support texturing within RayTracing

Fix bug with overlay OpenGL text.
2025-08-24 13:50:49 +03:00 · 2014-10-23 14:09:23 +04:00
parent f82a9555dc
commit 25ef750e44
21 changed files with 1539 additions and 497 deletions
--- a/src/OpenGl/OpenGl_Sampler.cxx
+++ b/src/OpenGl/OpenGl_Sampler.cxx
@@ -0,0 +1,133 @@
+// Created on: 2014-10-08
+// Created by: Denis BOGOLEPOV
+// Copyright (c) 2014 OPEN CASCADE SAS
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement.
+
+#include <OpenGl_Sampler.hxx>
+#include <OpenGl_GlCore33.hxx>
+#include <Standard_Assert.hxx>
+
+IMPLEMENT_STANDARD_HANDLE (OpenGl_Sampler, OpenGl_Resource)
+IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Sampler, OpenGl_Resource)
+
+// =======================================================================
+// function : OpenGl_Sampler
+// purpose  :
+// =======================================================================
+OpenGl_Sampler::OpenGl_Sampler()
+: mySamplerID (NO_SAMPLER)
+{
+  //
+}
+
+// =======================================================================
+// function : ~OpenGl_Sampler
+// purpose  :
+// =======================================================================
+OpenGl_Sampler::~OpenGl_Sampler()
+{
+  Release (NULL);
+}
+
+// =======================================================================
+// function : Release
+// purpose  :
+// =======================================================================
+void OpenGl_Sampler::Release (OpenGl_Context* theContext)
+{
+  if (isValidSampler())
+  {
+    // application can not handle this case by exception - this is bug in code
+    Standard_ASSERT_RETURN (theContext != NULL,
+      "OpenGl_Sampler destroyed without GL context! Possible GPU memory leakage...",);
+
+    if (theContext->IsValid())
+    {
+    #if !defined(GL_ES_VERSION_2_0) || defined(GL_ES_VERSION_3_0)
+      theContext->core33->glDeleteSamplers (1, &mySamplerID);
+    #endif
+    }
+
+    mySamplerID = NO_SAMPLER;
+  }
+}
+
+// =======================================================================
+// function : Init
+// purpose  : Initializes sampler object
+// =======================================================================
+Standard_Boolean OpenGl_Sampler::Init (OpenGl_Context& theContext)
+{
+  if (theContext.core33 == NULL)
+  {
+    return Standard_False;
+  }
+
+  if (isValidSampler())
+  {
+    Release (&theContext);
+  }
+
+#if !defined(GL_ES_VERSION_2_0) || defined(GL_ES_VERSION_3_0)
+  theContext.core33->glGenSamplers (1, &mySamplerID);
+  return Standard_True;
+#else
+  return Standard_False;
+#endif
+}
+
+// =======================================================================
+// function : Bind
+// purpose  : Binds sampler object to the given texture unit
+// =======================================================================
+void OpenGl_Sampler::Bind (OpenGl_Context& theContext,
+                           const GLuint    theUnit)
+{
+  if (isValidSampler())
+  {
+  #if !defined(GL_ES_VERSION_2_0) || defined(GL_ES_VERSION_3_0)
+    theContext.core33->glBindSampler (theUnit, mySamplerID);
+  #endif
+  }
+}
+
+// =======================================================================
+// function : Unbind
+// purpose  : Unbinds sampler object from the given texture unit
+// =======================================================================
+void OpenGl_Sampler::Unbind (OpenGl_Context& theContext,
+                             const GLuint    theUnit)
+{
+  if (isValidSampler())
+  {
+  #if !defined(GL_ES_VERSION_2_0) || defined(GL_ES_VERSION_3_0)
+    theContext.core33->glBindSampler (theUnit, NO_SAMPLER);
+  #endif
+  }
+}
+
+// =======================================================================
+// function : SetParameter
+// purpose  : Sets sampler parameters
+// =======================================================================
+void OpenGl_Sampler::SetParameter (OpenGl_Context& theContext,
+                                   const GLenum    theParam,
+                                   const GLint     theValue)
+{
+  if (isValidSampler())
+  {
+  #if !defined(GL_ES_VERSION_2_0) || defined(GL_ES_VERSION_3_0)
+    theContext.core33->glSamplerParameteri (mySamplerID, theParam, theValue);
+  #endif
+  }
+}