Method SetMapperShaderParameters

Rendering/OpenGL2/vtkOpenGLPolyDataMapper2D.cxx:357–404

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//------------------------------------------------------------------------------
void vtkOpenGLPolyDataMapper2D::SetMapperShaderParameters(
  vtkOpenGLHelper& cellBO, vtkViewport* viewport, vtkActor2D* actor)
{
  // Now to update the VAO too, if necessary.
  if (this->VBOUpdateTime > cellBO.AttributeUpdateTime ||
    cellBO.ShaderSourceTime > cellBO.AttributeUpdateTime)
  {
    cellBO.VAO->Bind();

    this->VBOs->AddAllAttributesToVAO(cellBO.Program, cellBO.VAO);

    cellBO.AttributeUpdateTime.Modified();
  }

  if (this->HaveCellScalars)
  {
    int tunit = this->CellScalarTexture->GetTextureUnit();
    cellBO.Program->SetUniformi("textureC", tunit);
  }

  if (this->VBOs->GetNumberOfComponents("tcoordMC"))
  {
    vtkInformation* info = actor->GetPropertyKeys();
    if (info && info->Has(vtkProp::GENERAL_TEXTURE_UNIT()))
    {
      int tunit = info->Get(vtkProp::GENERAL_TEXTURE_UNIT());
      cellBO.Program->SetUniformi("texture1", tunit);
    }
  }

  // handle wide lines
  if (this->HaveWideLines(viewport, actor))
  {
    int vp[4];
    glGetIntegerv(GL_VIEWPORT, vp);
    float lineWidth[2];
    lineWidth[0] = 2.0 * actor->GetProperty()->GetLineWidth() / vp[2];
    lineWidth[1] = 2.0 * actor->GetProperty()->GetLineWidth() / vp[3];
    cellBO.Program->SetUniform2f("lineWidthNVC", lineWidth);
  }

  vtkRenderer* ren = vtkRenderer::SafeDownCast(viewport);
  vtkHardwareSelector* selector = ren->GetSelector();
  if (selector && cellBO.Program->IsUniformUsed("mapperIndex"))
  {
    cellBO.Program->SetUniform3f("mapperIndex", selector->GetPropColorValue());
  }
}

//------------------------------------------------------------------------------
void vtkOpenGLPolyDataMapper2D::SetPropertyShaderParameters(