mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-20 11:05:44 +00:00
95 lines
2.9 KiB
C++
95 lines
2.9 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//
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// Copyright 2015 Sandia Corporation.
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// Copyright 2015 UT-Battelle, LLC.
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// Copyright 2015 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtk_m_rendering_RenderSurfaceGLX_h
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#define vtk_m_rendering_RenderSurfaceGLX_h
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#include <vtkm/Types.h>
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#include <vtkm/rendering/View.h>
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#include <vtkm/rendering/Color.h>
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#include <vtkm/rendering/RenderSurfaceGL.h>
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#include <GL/gl.h>
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#include <GL/glx.h>
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#include <iostream>
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#include <fstream>
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namespace vtkm {
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namespace rendering {
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class RenderSurfaceGLX : public RenderSurfaceGL
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{
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public:
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VTKM_CONT_EXPORT
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RenderSurfaceGLX(std::size_t w=1024, std::size_t h=1024,
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const vtkm::rendering::Color &c=vtkm::rendering::Color(0.0f,0.0f,0.0f,1.0f))
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: RenderSurfaceGL(w,h,c)
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{
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ctx = NULL;
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}
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VTKM_CONT_EXPORT
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virtual void Initialize()
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{
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ctx = glXGetCurrentContext();
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if (!ctx)
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throw vtkm::cont::ErrorControlBadValue("GL context creation failed.");
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rgba.resize(width*height*4);
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/*
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if (!OSMesaMakeCurrent(ctx, &rgba[0], GL_FLOAT, static_cast<GLsizei>(width), static_cast<GLsizei>(height)))
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throw vtkm::cont::ErrorControlBadValue("OSMesa context activation failed.");
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*/
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glEnable(GL_DEPTH_TEST);
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}
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VTKM_CONT_EXPORT
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virtual void Clear()
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{
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glClearColor(bgColor.Components[0],bgColor.Components[1],bgColor.Components[2], 1.0f);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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}
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VTKM_CONT_EXPORT
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virtual void Finish()
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{
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RenderSurfaceGL::Finish();
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/* TODO
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//Copy zbuff into floating point array.
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unsigned int *raw_zbuff;
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int zbytes, w, h;
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GLboolean ret;
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ret = OSMesaGetDepthBuffer(ctx, &w, &h, &zbytes, (void**)&raw_zbuff);
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if (!ret || static_cast<std::size_t>(w)!=width || static_cast<std::size_t>(h)!=height)
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throw vtkm::cont::ErrorControlBadValue("Wrong width/height in ZBuffer");
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std::size_t npixels = width*height;
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for (std::size_t i=0; i<npixels; i++)
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zbuff[i] = float(raw_zbuff[i]) / float(UINT_MAX);
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*/
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}
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private:
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GLXContext ctx;
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};
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}} //namespace vtkm::rendering
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#endif //vtk_m_rendering_RenderSurfaceGLX_h
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