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/*=========================================================================
Program: Visualization Toolkit
Module: vtkOpenGLCompositePainter.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkOpenGLCompositePainter.h"
#include "vtkInformation.h"
#include "vtkObjectFactory.h"
#include "vtkOpenGL.h"
#include "vtkOpenGLProperty.h"
#include "vtkOpenGLRenderWindow.h"
#include "vtkPolyDataPainter.h"
vtkStandardNewMacro(vtkOpenGLCompositePainter)
//-----------------------------------------------------------------------------
vtkOpenGLCompositePainter::vtkOpenGLCompositePainter()
{
this->PushedOpenGLAttribs = false;
}
//-----------------------------------------------------------------------------
vtkOpenGLCompositePainter::~vtkOpenGLCompositePainter()
{
}
//-----------------------------------------------------------------------------
void vtkOpenGLCompositePainter::UpdateRenderingState(
vtkRenderWindow* window, vtkProperty* property, RenderBlockState& state)
{
if (state.Opacity.top() == state.RenderedOpacity &&
state.AmbientColor.top() == state.RenderedAmbientColor &&
state.DiffuseColor.top() == state.RenderedDiffuseColor &&
state.SpecularColor.top() == state.RenderedSpecularColor)
{
bool something_overridden = (
state.Opacity.size() > 1 || state.AmbientColor.size() > 1 ||
state.DiffuseColor.size() > 1 || state.SpecularColor.size() > 1);
if (something_overridden == this->PushedOpenGLAttribs)
{
// nothing to do.
return;
}
}
state.RenderedOpacity = state.Opacity.top();
state.RenderedAmbientColor = state.AmbientColor.top();
state.RenderedDiffuseColor = state.DiffuseColor.top();
state.RenderedSpecularColor = state.SpecularColor.top();
if (state.Opacity.size() == 1 &&
state.AmbientColor.size() == 1 &&
state.DiffuseColor.size() == 1 &&
state.SpecularColor.size() == 1)
{
// We are returning to root state.
if (this->PushedOpenGLAttribs)
{
glPopAttrib();
this->PushedOpenGLAttribs = false;
this->Information->Remove(vtkPolyDataPainter::DISABLE_SCALAR_COLOR());
}
else
{
vtkWarningMacro("State mismatch. UpdateRenderingState() isn't being called "
"correctly.");
}
}
else
{
if (!this->PushedOpenGLAttribs)
{
this->PushedOpenGLAttribs = true;
glPushAttrib(GL_COLOR_BUFFER_BIT|GL_LIGHTING_BIT|GL_CURRENT_BIT|GL_ENABLE_BIT|
GL_TEXTURE_BIT);
// disable state
glDisable(GL_ALPHA_TEST);
glDisable(GL_COLOR_MATERIAL);
// The following seems to overcome the color bleed when scalar coloring
// with point-data with InterpolateScalarsBeforeMapping ON. The real cause
// however, is some interactions with the depth-peeling code.
// That needs to tracked down, rather than just hacking the logic here.
// glBindTexture(GL_TEXTURE_2D, 0);
if (state.AmbientColor.size() > 1 || state.DiffuseColor.size() > 1 || state.SpecularColor.size() > 1)
{
glDisable(GL_TEXTURE_2D);
this->Information->Set(vtkPolyDataPainter::DISABLE_SCALAR_COLOR(), 1);
}
else
{
this->Information->Remove(vtkPolyDataPainter::DISABLE_SCALAR_COLOR());
}
}
vtkOpenGLRenderWindow* windowGL = vtkOpenGLRenderWindow::SafeDownCast(window);
vtkOpenGLProperty::SetMaterialProperties(
static_cast<unsigned int>(GL_FRONT_AND_BACK),
property->GetAmbient(), state.RenderedAmbientColor.GetData(),
property->GetDiffuse(), state.RenderedDiffuseColor.GetData(),
property->GetSpecular(), state.RenderedSpecularColor.GetData(),
property->GetSpecularPower(),
state.RenderedOpacity,
windowGL);
}
}
//-----------------------------------------------------------------------------
void vtkOpenGLCompositePainter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
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