fdaccc22db
Change the VTKM_CONT_EXPORT to VTKM_CONT. (Likewise for EXEC and EXEC_CONT.) Remove the inline from these macros so that they can be applied to everything, including implementations in a library. Because inline is not declared in these modifies, you have to add the keyword to functions and methods where the implementation is not inlined in the class.
179 lines
4.7 KiB
C++
179 lines
4.7 KiB
C++
//=============================================================================
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//
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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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//
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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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// 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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//=============================================================================
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#include <vtkm/rendering/TextureGL.h>
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#include <vtkm/rendering/internal/OpenGLHeaders.h>
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namespace vtkm {
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namespace rendering {
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struct TextureGL::InternalsType
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{
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GLuint Id;
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int Dimension;
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bool MIPMap;
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bool Linear2D;
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bool LinearMIP;
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VTKM_CONT
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InternalsType()
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: Id(0), Dimension(0), MIPMap(false), Linear2D(true), LinearMIP(true)
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{ }
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VTKM_CONT
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~InternalsType()
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{
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if (this->Id != 0)
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{
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glDeleteTextures(1, &this->Id);
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}
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}
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};
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TextureGL::TextureGL()
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: Internals(new InternalsType)
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{ }
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TextureGL::~TextureGL()
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{ }
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bool TextureGL::Valid() const
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{
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return (this->Internals->Id != 0);
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}
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void TextureGL::Enable() const
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{
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if (!this->Valid())
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{
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return;
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}
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if (this->Internals->Dimension == 1)
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{
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// no this->Internals->MIPMapping for 1D (at the moment)
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glBindTexture(GL_TEXTURE_1D, this->Internals->Id);
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glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP);
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if (this->Internals->Linear2D)
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{
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glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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}
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else
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{
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glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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}
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glEnable(GL_TEXTURE_1D);
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}
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else if (this->Internals->Dimension == 2)
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{
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glBindTexture(GL_TEXTURE_2D, this->Internals->Id);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
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if (this->Internals->Linear2D)
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{
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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if (!this->Internals->MIPMap)
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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else if (this->Internals->LinearMIP)
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
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else
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
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}
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else
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{
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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if (!this->Internals->MIPMap)
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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else if (this->Internals->LinearMIP)
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_LINEAR);
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else
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
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}
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glEnable(GL_TEXTURE_2D);
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}
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else
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{
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// Fail silently for invalid dimension.
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}
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}
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void TextureGL::Disable() const
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{
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if (this->Internals->Dimension == 1)
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{
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glDisable(GL_TEXTURE_1D);
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}
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else if (this->Internals->Dimension == 2)
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{
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glDisable(GL_TEXTURE_2D);
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}
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else
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{
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// Fail silently for invalid dimension
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}
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}
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void TextureGL::CreateAlphaFromRGBA(vtkm::Id width,
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vtkm::Id height,
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const std::vector<unsigned char> &rgba)
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{
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this->Internals->Dimension = 2;
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std::vector<unsigned char> alpha(rgba.size()/4);
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VTKM_ASSERT(width*height == static_cast<vtkm::Id>(alpha.size()));
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for (std::size_t i=0; i<alpha.size(); i++)
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{
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alpha[i] = rgba[i*4+3];
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}
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if (this->Internals->Id == 0)
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{
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glGenTextures(1, &this->Internals->Id);
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}
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if (this->Internals->Dimension == 1)
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{
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glBindTexture(GL_TEXTURE_1D, this->Internals->Id);
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}
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else if (this->Internals->Dimension == 2)
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{
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glBindTexture(GL_TEXTURE_2D, this->Internals->Id);
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//#define HW_MIPMAPS
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#ifdef HW_MIPMAPS
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mpimap = true;
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glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS, GL_TRUE);
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#endif
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glTexImage2D(GL_TEXTURE_2D, 0,
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GL_ALPHA,
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static_cast<GLsizei>(width), static_cast<GLsizei>(height),
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0,
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GL_ALPHA,
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GL_UNSIGNED_BYTE,
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(void*)(&(alpha[0])));
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}
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}
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}
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} // namespace vtkm::rendering
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