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644 lines
20 KiB
C++
Executable File
644 lines
20 KiB
C++
Executable File
// Created on: 2011-07-13
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// Created by: Sergey ZERCHANINOV
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// Copyright (c) 2011-2013 OPEN CASCADE SAS
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//
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// The content of this file is subject to the Open CASCADE Technology Public
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// License Version 6.5 (the "License"). You may not use the content of this file
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// except in compliance with the License. Please obtain a copy of the License
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// at http://www.opencascade.org and read it completely before using this file.
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//
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// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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//
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// The Original Code and all software distributed under the License is
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// distributed on an "AS IS" basis, without warranty of any kind, and the
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// Initial Developer hereby disclaims all such warranties, including without
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// limitation, any warranties of merchantability, fitness for a particular
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// purpose or non-infringement. Please see the License for the specific terms
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// and conditions governing the rights and limitations under the License.
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#include <OpenGl_IndexBuffer.hxx>
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#include <OpenGl_Context.hxx>
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#include <OpenGl_PrimitiveArray.hxx>
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#include <OpenGl_AspectFace.hxx>
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#include <OpenGl_GraphicDriver.hxx>
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#include <OpenGl_Structure.hxx>
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#include <OpenGl_Workspace.hxx>
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#include <InterfaceGraphic_PrimitiveArray.hxx>
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// =======================================================================
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// function : clearMemoryOwn
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// purpose :
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// =======================================================================
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void OpenGl_PrimitiveArray::clearMemoryOwn() const
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{
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Standard::Free ((Standard_Address& )myPArray->edges);
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Standard::Free ((Standard_Address& )myPArray->vertices);
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Standard::Free ((Standard_Address& )myPArray->vcolours);
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Standard::Free ((Standard_Address& )myPArray->vnormals);
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Standard::Free ((Standard_Address& )myPArray->vtexels);
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Standard::Free ((Standard_Address& )myPArray->edge_vis); /// ???
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myPArray->edges = NULL;
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myPArray->vertices = NULL;
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myPArray->vcolours = NULL;
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myPArray->vnormals = NULL;
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myPArray->vtexels = NULL;
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myPArray->edge_vis = NULL;
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}
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// =======================================================================
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// function : clearMemoryGL
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// purpose :
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// =======================================================================
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void OpenGl_PrimitiveArray::clearMemoryGL (const Handle(OpenGl_Context)& theGlCtx) const
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{
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for (Standard_Integer anIter = 0; anIter < VBOMaxType; ++anIter)
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{
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if (!myVbos[anIter].IsNull())
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{
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myVbos[anIter]->Release (theGlCtx.operator->());
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myVbos[anIter].Nullify();
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}
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}
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}
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// =======================================================================
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// function : BuildVBO
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// purpose :
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// =======================================================================
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Standard_Boolean OpenGl_PrimitiveArray::BuildVBO (const Handle(OpenGl_Workspace)& theWorkspace) const
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{
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const Handle(OpenGl_Context)& aGlCtx = theWorkspace->GetGlContext();
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if (myPArray->vertices == NULL)
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{
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// vertices should be always defined - others are optional
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return Standard_False;
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}
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myVbos[VBOVertices] = new OpenGl_VertexBuffer();
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if (!myVbos[VBOVertices]->Init (aGlCtx, 3, myPArray->num_vertexs, &myPArray->vertices[0].xyz[0]))
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{
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clearMemoryGL (aGlCtx);
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return Standard_False;
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}
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if (myPArray->edges != NULL
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&& myPArray->num_edges > 0)
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{
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myVbos[VBOEdges] = new OpenGl_IndexBuffer();
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if (!myVbos[VBOEdges]->Init (aGlCtx, 1, myPArray->num_edges, (GLuint* )myPArray->edges))
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{
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clearMemoryGL (aGlCtx);
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return Standard_False;
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}
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}
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if (myPArray->vcolours != NULL)
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{
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myVbos[VBOVcolours] = new OpenGl_VertexBuffer();
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if (!myVbos[VBOVcolours]->Init (aGlCtx, 4, myPArray->num_vertexs, (GLubyte* )myPArray->vcolours))
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{
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clearMemoryGL (aGlCtx);
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return Standard_False;
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}
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}
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if (myPArray->vnormals != NULL)
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{
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myVbos[VBOVnormals] = new OpenGl_VertexBuffer();
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if (!myVbos[VBOVnormals]->Init (aGlCtx, 3, myPArray->num_vertexs, &myPArray->vnormals[0].xyz[0]))
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{
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clearMemoryGL (aGlCtx);
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return Standard_False;
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}
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}
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if (myPArray->vtexels)
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{
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myVbos[VBOVtexels] = new OpenGl_VertexBuffer();
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if (!myVbos[VBOVtexels]->Init (aGlCtx, 2, myPArray->num_vertexs, &myPArray->vtexels[0].xy[0]))
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{
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clearMemoryGL (aGlCtx);
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return Standard_False;
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}
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}
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clearMemoryOwn();
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return Standard_True;
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}
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// =======================================================================
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// function : DrawArray
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// purpose :
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// =======================================================================
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void OpenGl_PrimitiveArray::DrawArray (Tint theLightingModel,
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const Aspect_InteriorStyle theInteriorStyle,
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Tint theEdgeFlag,
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const TEL_COLOUR* theInteriorColour,
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const TEL_COLOUR* theLineColour,
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const TEL_COLOUR* theEdgeColour,
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const OPENGL_SURF_PROP* theFaceProp,
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const Handle(OpenGl_Workspace)& theWorkspace) const
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{
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const Handle(OpenGl_Context)& aGlContext = theWorkspace->GetGlContext();
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Tint i,n;
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Tint transp = 0;
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// Following pointers have been provided for performance improvement
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tel_colour pfc = myPArray->fcolours;
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Tint* pvc = myPArray->vcolours;
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if (pvc != NULL)
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{
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for (i = 0; i < myPArray->num_vertexs; ++i)
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{
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transp = int(theFaceProp->trans * 255.0f);
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#if defined (sparc) || defined (__sparc__) || defined (__sparc)
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pvc[i] = (pvc[i] & 0xffffff00);
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pvc[i] += transp;
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#else
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pvc[i] = (pvc[i] & 0x00ffffff);
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pvc[i] += transp << 24;
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#endif
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}
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}
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switch (myPArray->type)
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{
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case TelPointsArrayType:
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case TelPolylinesArrayType:
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case TelSegmentsArrayType:
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glColor3fv (theLineColour->rgb);
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break;
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case TelPolygonsArrayType:
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case TelTrianglesArrayType:
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case TelQuadranglesArrayType:
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case TelTriangleStripsArrayType:
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case TelQuadrangleStripsArrayType:
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case TelTriangleFansArrayType:
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glColor3fv (theInteriorColour->rgb);
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break;
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}
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// Temporarily disable environment mapping
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if (myDrawMode <= GL_LINE_STRIP)
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{
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glPushAttrib (GL_ENABLE_BIT);
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glDisable (GL_TEXTURE_1D);
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glDisable (GL_TEXTURE_2D);
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}
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if ((myDrawMode > GL_LINE_STRIP && theInteriorStyle != Aspect_IS_EMPTY) ||
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(myDrawMode <= GL_LINE_STRIP))
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{
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if (theWorkspace->NamedStatus & OPENGL_NS_HIGHLIGHT)
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{
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pfc = NULL;
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pvc = NULL;
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}
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if (theInteriorStyle == Aspect_IS_HIDDENLINE)
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{
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theEdgeFlag = 1;
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pfc = NULL;
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pvc = NULL;
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}
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// Sometimes the GL_LIGHTING mode is activated here
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// without glEnable(GL_LIGHTING) call for an unknown reason, so it is necessary
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// to call glEnable(GL_LIGHTING) to synchronize Light On/Off mechanism*
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if (theLightingModel == 0 || myDrawMode <= GL_LINE_STRIP)
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glDisable (GL_LIGHTING);
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else
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glEnable (GL_LIGHTING);
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if (!toDrawVbo())
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{
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if (myPArray->vertices != NULL)
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{
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glVertexPointer (3, GL_FLOAT, 0, myPArray->vertices); // array of vertices
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glEnableClientState (GL_VERTEX_ARRAY);
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}
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if (myPArray->vnormals != NULL)
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{
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glNormalPointer (GL_FLOAT, 0, myPArray->vnormals); // array of normals
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glEnableClientState (GL_NORMAL_ARRAY);
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}
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if (myPArray->vtexels != NULL)
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{
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glTexCoordPointer (2, GL_FLOAT, 0, myPArray->vtexels); // array of texture coordinates
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glEnableClientState (GL_TEXTURE_COORD_ARRAY);
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}
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if (pvc != NULL)
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{
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glColorPointer (4, GL_UNSIGNED_BYTE, 0, pvc); // array of colors
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glEnableClientState (GL_COLOR_ARRAY);
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glColorMaterial (GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE);
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glEnable (GL_COLOR_MATERIAL);
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}
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}
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else
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{
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// Bindings concrete pointer in accordance with VBO buffer
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myVbos[VBOVertices]->BindFixed (aGlContext, GL_VERTEX_ARRAY);
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if (!myVbos[VBOVnormals].IsNull())
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{
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myVbos[VBOVnormals]->BindFixed (aGlContext, GL_NORMAL_ARRAY);
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}
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if (!myVbos[VBOVtexels].IsNull() && (theWorkspace->NamedStatus & OPENGL_NS_FORBIDSETTEX) == 0)
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{
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myVbos[VBOVtexels]->BindFixed (aGlContext, GL_TEXTURE_COORD_ARRAY);
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}
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if (!myVbos[VBOVcolours].IsNull())
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{
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myVbos[VBOVcolours]->BindFixed (aGlContext, GL_COLOR_ARRAY);
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glColorMaterial (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
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glEnable (GL_COLOR_MATERIAL);
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}
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}
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/// OCC22236 NOTE: draw for all situations:
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/// 1) draw elements from myPArray->bufferVBO[VBOEdges] indicies array
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/// 2) draw elements from vertice array, when bounds defines count of primitive's verts.
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/// 3) draw primitive by vertexes if no edges and bounds array is specified
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if (toDrawVbo())
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{
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if (!myVbos[VBOEdges].IsNull())
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{
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myVbos[VBOEdges]->Bind (aGlContext);
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if (myPArray->num_bounds > 0)
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{
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// draw primitives by vertex count with the indicies
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Tint* anOffset = NULL;
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for (i = 0; i < myPArray->num_bounds; ++i)
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{
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if (pfc != NULL) glColor3fv (pfc[i].rgb);
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glDrawElements (myDrawMode, myPArray->bounds[i], myVbos[VBOEdges]->GetDataType(), anOffset);
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anOffset += myPArray->bounds[i];
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}
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}
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else
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{
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// draw one (or sequential) primitive by the indicies
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glDrawElements (myDrawMode, myPArray->num_edges, myVbos[VBOEdges]->GetDataType(), NULL);
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}
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myVbos[VBOEdges]->Unbind (aGlContext);
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}
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else if (myPArray->num_bounds > 0)
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{
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for (i = n = 0; i < myPArray->num_bounds; ++i)
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{
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if (pfc != NULL) glColor3fv (pfc[i].rgb);
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glDrawArrays (myDrawMode, n, myPArray->bounds[i]);
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n += myPArray->bounds[i];
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}
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}
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else
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{
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glDrawArrays (myDrawMode, 0, myVbos[VBOVertices]->GetElemsNb());
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}
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// bind with 0
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myVbos[VBOVertices]->UnbindFixed (aGlContext, GL_VERTEX_ARRAY);
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if (!myVbos[VBOVnormals].IsNull())
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{
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myVbos[VBOVnormals]->UnbindFixed (aGlContext, GL_NORMAL_ARRAY);
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}
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if (!myVbos[VBOVtexels].IsNull() && (theWorkspace->NamedStatus & OPENGL_NS_FORBIDSETTEX) == 0)
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{
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myVbos[VBOVtexels]->UnbindFixed (aGlContext, GL_TEXTURE_COORD_ARRAY);
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}
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if (!myVbos[VBOVcolours].IsNull())
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{
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myVbos[VBOVcolours]->UnbindFixed (aGlContext, GL_COLOR_ARRAY);
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glDisable (GL_COLOR_MATERIAL);
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theWorkspace->NamedStatus |= OPENGL_NS_RESMAT; // Reset material
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}
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}
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else
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{
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if (myPArray->num_bounds > 0)
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{
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if (myPArray->num_edges > 0)
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{
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for (i = n = 0; i < myPArray->num_bounds; ++i)
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{
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if (pfc != NULL) glColor3fv (pfc[i].rgb);
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glDrawElements (myDrawMode, myPArray->bounds[i], GL_UNSIGNED_INT, (GLenum* )&myPArray->edges[n]);
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n += myPArray->bounds[i];
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}
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}
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else
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{
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for (i = n = 0; i < myPArray->num_bounds; ++i)
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{
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if (pfc != NULL) glColor3fv (pfc[i].rgb);
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glDrawArrays (myDrawMode, n, myPArray->bounds[i]);
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n += myPArray->bounds[i];
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}
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}
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}
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else if (myPArray->num_edges > 0)
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{
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glDrawElements (myDrawMode, myPArray->num_edges, GL_UNSIGNED_INT, (GLenum* )myPArray->edges);
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}
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else
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{
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glDrawArrays (myDrawMode, 0, myPArray->num_vertexs);
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}
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if (pvc != NULL)
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{
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glDisable (GL_COLOR_MATERIAL);
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theWorkspace->NamedStatus |= OPENGL_NS_RESMAT; // Reset material
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}
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glDisableClientState (GL_VERTEX_ARRAY);
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if (myPArray->vcolours != NULL)
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glDisableClientState (GL_COLOR_ARRAY);
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if (myPArray->vnormals != NULL)
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glDisableClientState (GL_NORMAL_ARRAY);
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if (myPArray->vtexels != NULL)
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glDisableClientState (GL_TEXTURE_COORD_ARRAY);
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}
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}
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// On some NVIDIA graphic cards, using glEdgeFlagPointer() in
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// combination with VBO (edge flag data put into a VBO buffer)
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// leads to a crash in a driver. Therefore, edge flags are simply
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// igonored when VBOs are enabled, so all the edges are drawn if
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// edge visibility is turned on. In order to draw edges selectively,
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// either disable VBO or turn off edge visibilty in the current
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// primitive array and create a separate primitive array (segments)
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// and put edges to be drawn into it.
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if (theEdgeFlag && myDrawMode > GL_LINE_STRIP)
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{
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DrawEdges (theEdgeColour, theWorkspace);
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}
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if (myDrawMode <= GL_LINE_STRIP)
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glPopAttrib();
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}
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// =======================================================================
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// function : DrawEdges
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// purpose :
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// =======================================================================
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void OpenGl_PrimitiveArray::DrawEdges (const TEL_COLOUR* theEdgeColour,
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const Handle(OpenGl_Workspace)& theWorkspace) const
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{
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glDisable (GL_LIGHTING);
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const Handle(OpenGl_Context)& aGlContext = theWorkspace->GetGlContext();
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const OpenGl_AspectLine* anAspectLineOld = NULL;
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if (myDrawMode > GL_LINE_STRIP)
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{
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anAspectLineOld = theWorkspace->SetAspectLine (theWorkspace->AspectFace (Standard_True)->AspectEdge());
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theWorkspace->AspectLine (Standard_True);
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glPushAttrib (GL_POLYGON_BIT);
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glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
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}
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Tint i, j, n;
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/// OCC22236 NOTE: draw edges for all situations:
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/// 1) draw elements with GL_LINE style as edges from myPArray->bufferVBO[VBOEdges] indicies array
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/// 2) draw elements from vertice array, when bounds defines count of primitive's verts.
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/// 3) draw primitive's edges by vertexes if no edges and bounds array is specified
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if (toDrawVbo())
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{
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myVbos[VBOVertices]->BindFixed (aGlContext, GL_VERTEX_ARRAY);
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glColor3fv (theEdgeColour->rgb);
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if (!myVbos[VBOEdges].IsNull())
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{
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myVbos[VBOEdges]->Bind (aGlContext);
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// draw primitives by vertex count with the indicies
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if (myPArray->num_bounds > 0)
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{
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Tint* offset = 0;
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for (i = 0, offset = 0; i < myPArray->num_bounds; ++i)
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{
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glDrawElements (myDrawMode, myPArray->bounds[i], myVbos[VBOEdges]->GetDataType(), offset);
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offset += myPArray->bounds[i];
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}
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}
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// draw one (or sequential) primitive by the indicies
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else
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{
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glDrawElements (myDrawMode, myVbos[VBOEdges]->GetElemsNb(), myVbos[VBOEdges]->GetDataType(), NULL);
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}
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myVbos[VBOEdges]->Unbind (aGlContext);
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}
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else if (myPArray->num_bounds > 0)
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{
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for (i = n = 0; i < myPArray->num_bounds; ++i)
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{
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glDrawArrays (myDrawMode, n, myPArray->bounds[i]);
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n += myPArray->bounds[i];
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}
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}
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else
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{
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glDrawArrays (myDrawMode, 0, myPArray->num_vertexs);
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}
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// unbind buffers
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myVbos[VBOVertices]->UnbindFixed (aGlContext, GL_VERTEX_ARRAY);
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}
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else
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{
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glEnableClientState (GL_VERTEX_ARRAY);
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glVertexPointer (3, GL_FLOAT, 0, myPArray->vertices); // array of vertices
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glColor3fv (theEdgeColour->rgb);
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if (myPArray->num_bounds > 0)
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{
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if (myPArray->num_edges > 0)
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{
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for (i = n = 0; i < myPArray->num_bounds; ++i)
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{
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if (myPArray->edge_vis)
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{
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glBegin (myDrawMode);
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for (j = 0; j < myPArray->bounds[i]; ++j)
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{
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glEdgeFlag (myPArray->edge_vis[n+j]);
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glVertex3fv (&myPArray->vertices[myPArray->edges[n+j]].xyz[0]);
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}
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glEnd();
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}
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else
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{
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glDrawElements (myDrawMode, myPArray->bounds[i], GL_UNSIGNED_INT, (GLenum* )&myPArray->edges[n]);
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}
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n += myPArray->bounds[i];
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}
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}
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else
|
|
{
|
|
for (i = n = 0 ; i < myPArray->num_bounds; ++i)
|
|
{
|
|
glDrawArrays (myDrawMode, n, myPArray->bounds[i]);
|
|
n += myPArray->bounds[i];
|
|
}
|
|
}
|
|
}
|
|
else if (myPArray->num_edges > 0)
|
|
{
|
|
if (myPArray->edge_vis)
|
|
{
|
|
glBegin (myDrawMode);
|
|
for (i = 0; i < myPArray->num_edges; ++i)
|
|
{
|
|
glEdgeFlag (myPArray->edge_vis[i]);
|
|
glVertex3fv (&myPArray->vertices[myPArray->edges[i]].xyz[0]);
|
|
}
|
|
glEnd();
|
|
}
|
|
else
|
|
{
|
|
glDrawElements (myDrawMode, myPArray->num_edges, GL_UNSIGNED_INT, (GLenum* )myPArray->edges);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
glDrawArrays (myDrawMode, 0, myPArray->num_vertexs);
|
|
}
|
|
}
|
|
|
|
if (myDrawMode > GL_LINE_STRIP)
|
|
{
|
|
// Restore line context
|
|
theWorkspace->SetAspectLine (anAspectLineOld);
|
|
glPopAttrib();
|
|
}
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : OpenGl_PrimitiveArray
|
|
// purpose :
|
|
// =======================================================================
|
|
OpenGl_PrimitiveArray::OpenGl_PrimitiveArray (CALL_DEF_PARRAY* thePArray)
|
|
: myPArray (thePArray),
|
|
myDrawMode (DRAW_MODE_NONE),
|
|
myIsVboInit (Standard_False)
|
|
{
|
|
switch (myPArray->type)
|
|
{
|
|
case TelPointsArrayType:
|
|
myDrawMode = GL_POINTS;
|
|
break;
|
|
case TelPolylinesArrayType:
|
|
myDrawMode = GL_LINE_STRIP;
|
|
break;
|
|
case TelSegmentsArrayType:
|
|
myDrawMode = GL_LINES;
|
|
break;
|
|
case TelPolygonsArrayType:
|
|
myDrawMode = GL_POLYGON;
|
|
break;
|
|
case TelTrianglesArrayType:
|
|
myDrawMode = GL_TRIANGLES;
|
|
break;
|
|
case TelQuadranglesArrayType:
|
|
myDrawMode = GL_QUADS;
|
|
break;
|
|
case TelTriangleStripsArrayType:
|
|
myDrawMode = GL_TRIANGLE_STRIP;
|
|
break;
|
|
case TelQuadrangleStripsArrayType:
|
|
myDrawMode = GL_QUAD_STRIP;
|
|
break;
|
|
case TelTriangleFansArrayType:
|
|
myDrawMode = GL_TRIANGLE_FAN;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : ~OpenGl_PrimitiveArray
|
|
// purpose :
|
|
// =======================================================================
|
|
OpenGl_PrimitiveArray::~OpenGl_PrimitiveArray()
|
|
{
|
|
//
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : Release
|
|
// purpose :
|
|
// =======================================================================
|
|
void OpenGl_PrimitiveArray::Release (const Handle(OpenGl_Context)& theContext)
|
|
{
|
|
for (Standard_Integer anIter = 0; anIter < VBOMaxType; ++anIter)
|
|
{
|
|
if (!myVbos[anIter].IsNull())
|
|
{
|
|
if (!theContext.IsNull())
|
|
{
|
|
theContext->DelayedRelease (myVbos[anIter]);
|
|
}
|
|
myVbos[anIter].Nullify();
|
|
}
|
|
}
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : Render
|
|
// purpose :
|
|
// =======================================================================
|
|
void OpenGl_PrimitiveArray::Render (const Handle(OpenGl_Workspace)& theWorkspace) const
|
|
{
|
|
if (myPArray == NULL || myDrawMode == DRAW_MODE_NONE || myPArray->num_vertexs <= 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
// create VBOs on first render call
|
|
if (!myIsVboInit && OpenGl_GraphicDriver::ToUseVBO() && theWorkspace->GetGlContext()->core15 != NULL)
|
|
{
|
|
BuildVBO (theWorkspace);
|
|
myIsVboInit = Standard_True;
|
|
}
|
|
|
|
switch (myPArray->type)
|
|
{
|
|
case TelPointsArrayType:
|
|
case TelPolylinesArrayType:
|
|
case TelSegmentsArrayType:
|
|
{
|
|
glDisable (GL_LIGHTING);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
const OpenGl_AspectFace* anAspectFace = theWorkspace->AspectFace (Standard_True);
|
|
const OpenGl_AspectLine* anAspectLine = theWorkspace->AspectLine (Standard_True);
|
|
const OpenGl_AspectMarker* anAspectMarker = theWorkspace->AspectMarker (myPArray->type == TelPointsArrayType);
|
|
|
|
Tint aFrontLightingModel = anAspectFace->IntFront.color_mask;
|
|
const TEL_COLOUR* anInteriorColor = &anAspectFace->IntFront.matcol;
|
|
const TEL_COLOUR* anEdgeColor = &anAspectFace->AspectEdge()->Color();
|
|
const TEL_COLOUR* aLineColor = (myPArray->type == TelPointsArrayType) ? &anAspectMarker->Color() : &anAspectLine->Color();
|
|
|
|
// Use highlight colors
|
|
if (theWorkspace->NamedStatus & OPENGL_NS_HIGHLIGHT)
|
|
{
|
|
anEdgeColor = anInteriorColor = aLineColor = theWorkspace->HighlightColor;
|
|
aFrontLightingModel = 0;
|
|
}
|
|
|
|
DrawArray (aFrontLightingModel,
|
|
anAspectFace->InteriorStyle,
|
|
anAspectFace->Edge,
|
|
anInteriorColor,
|
|
aLineColor,
|
|
anEdgeColor,
|
|
&anAspectFace->IntFront,
|
|
theWorkspace);
|
|
}
|