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https://git.dev.opencascade.org/repos/occt.git
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5f8b738ea5
Extend OpenGl_Context to provide GL2.0 core functionality Added 'glext.h' header provided by Khronos group with definitions and GL functions' types. Added OpenGl_GlCoreXX structures with function list to appropriate GL core functionality. Fixed memory leak in OpenGl_Context destructor. Eliminate inclusions of gl.h header Use OpenGl_GlCore11.hxx instead. Removed obsolote M_PI redefinitions. Slightly cleaned up included headers. Reuse definitions from glext.h OpenGl_ArbVBO and OpenGl_ExtFBO originally provide own definitions for OpenGL extensions.
48 lines
1.2 KiB
C++
Executable File
48 lines
1.2 KiB
C++
Executable File
// File: OpenGl_GraphicDriver_2.cxx
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// Created: 20 October 2011
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// Author: Sergey ZERCHANINOV
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// Copyright: OPEN CASCADE 2011
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#include <OpenGl_GlCore11.hxx>
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#include <OpenGl_GraphicDriver.hxx>
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#include <OpenGl_Display.hxx>
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#include <OpenGl_CView.hxx>
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Standard_Integer OpenGl_GraphicDriver::InquireLightLimit ()
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{
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return (openglDisplay.IsNull()? 0 : openglDisplay->Facilities().MaxLights);
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}
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void OpenGl_GraphicDriver::InquireMat (const Graphic3d_CView& ACView, TColStd_Array2OfReal& AMatO, TColStd_Array2OfReal& AMatM)
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{
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const OpenGl_CView *aCView = (const OpenGl_CView *)ACView.ptrView;
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if (aCView)
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aCView->View->GetMatrices(AMatO,AMatM,ACView.Orientation.IsCustomMatrix);
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}
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Standard_Integer OpenGl_GraphicDriver::InquireViewLimit ()
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{
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return (openglDisplay.IsNull()? 0 : openglDisplay->Facilities().MaxViews);
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}
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Standard_Boolean OpenGl_GraphicDriver::InquireTextureAvailable ()
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{
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return Standard_True;
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}
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Standard_Integer OpenGl_GraphicDriver::InquirePlaneLimit ()
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{
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GLint aMaxPlanes = 0;
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if (GET_GL_CONTEXT())
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{
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glGetIntegerv (GL_MAX_CLIP_PLANES, &aMaxPlanes);
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aMaxPlanes -= 2; // NOTE the 2 first planes are reserved for ZClipping
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if (aMaxPlanes < 0)
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aMaxPlanes = 0;
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}
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return aMaxPlanes;
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}
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