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862 lines
26 KiB
C++
862 lines
26 KiB
C++
1 month ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkOpenGLProperty.cxx
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm 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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#include "vtkOpenGLRenderer.h"
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#include "vtkOpenGLProperty.h"
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#include "vtkOpenGL.h"
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#include "vtkObjectFactory.h"
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#include "vtkOpenGLExtensionManager.h"
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#include "vtkOpenGLGL2PSHelper.h"
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#include "vtkOpenGLTexture.h"
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#include "vtkTexture.h"
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#include "vtkgl.h" // vtkgl namespace
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#include "vtkShader2.h"
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#include "vtkShaderProgram2.h"
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#include "vtkUniformVariables.h"
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#include "vtkShader2Collection.h"
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#include "vtkTextureUnitManager.h"
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#include "vtkGLSLShaderDeviceAdapter2.h"
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#include "vtkOpenGLPainterDeviceAdapter.h"
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#include "vtkOpenGLRenderWindow.h"
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#include "vtkOpenGLError.h"
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#include <cassert>
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namespace
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{
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void ComputeMaterialColor(GLfloat result[4],
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bool premultiply_colors_with_alpha,
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double color_factor,
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const double color[3],
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double opacity)
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{
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double opacity_factor = premultiply_colors_with_alpha? opacity : 1.0;
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for (int cc=0; cc < 3; cc++)
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{
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result[cc] = static_cast<GLfloat>(
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opacity_factor * color_factor * color[cc]);
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}
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result[3] = opacity;
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}
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}
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vtkStandardNewMacro(vtkOpenGLProperty);
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extern const char *vtkOpenGLPropertyDefaultMain_vs;
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extern const char *vtkOpenGLPropertyDefaultMain_fs;
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extern const char *vtkOpenGLPropertyDefaultPropFunc_vs;
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extern const char *vtkOpenGLPropertyDefaultPropFunc_fs;
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vtkCxxSetObjectMacro(vtkOpenGLProperty,PropProgram,vtkShaderProgram2);
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vtkOpenGLProperty::vtkOpenGLProperty()
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{
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this->PropProgram = 0;
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this->CachedShaderProgram2 = 0;
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this->LastRendererShaderProgram2 = 0;
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this->LastPropProgram = 0;
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this->DefaultMainVS = 0;
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this->DefaultMainFS = 0;
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this->DefaultPropVS = 0;
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this->DefaultPropFS = 0;
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this->UseDefaultMainVS = false;
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this->UseDefaultMainFS = false;
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this->UseDefaultPropVS = false;
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this->UseDefaultPropFS = false;
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this->ShaderDeviceAdapter2 = 0;
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this->CurrentShaderProgram2 = 0;
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}
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vtkOpenGLProperty::~vtkOpenGLProperty()
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{
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this->SetPropProgram(0);
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if (this->CachedShaderProgram2)
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{
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this->CachedShaderProgram2->Delete();
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this->CachedShaderProgram2 = 0;
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}
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if (this->DefaultMainVS)
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{
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this->DefaultMainVS->Delete();
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this->DefaultMainVS = 0;
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}
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if (this->DefaultMainFS)
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{
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this->DefaultMainFS->Delete();
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this->DefaultMainFS = 0;
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}
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if (this->DefaultPropVS)
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{
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this->DefaultPropVS->Delete();
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this->DefaultPropVS = 0;
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}
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if (this->DefaultPropFS)
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{
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this->DefaultPropFS->Delete();
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this->DefaultPropFS = 0;
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}
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if (this->ShaderDeviceAdapter2)
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{
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this->ShaderDeviceAdapter2->Delete();
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this->ShaderDeviceAdapter2 = 0;
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}
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}
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vtkShaderDeviceAdapter2* vtkOpenGLProperty::GetShaderDeviceAdapter2()
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{
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return this->ShaderDeviceAdapter2;
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}
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// ----------------------------------------------------------------------------
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void vtkOpenGLProperty::AddShaderVariable(const char *name,
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int numVars,
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int *x)
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{
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this->Superclass::AddShaderVariable(name, numVars, x);
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if (!this->PropProgram)
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{
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return;
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}
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vtkShader2Collection* shaders = this->PropProgram->GetShaders();
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shaders->InitTraversal();
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vtkShader2* shader = shaders->GetNextShader();
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while (shader)
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{
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shader->GetUniformVariables()->SetUniformi(name, numVars, x);
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shader = shaders->GetNextShader();
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}
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}
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// ----------------------------------------------------------------------------
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void vtkOpenGLProperty::AddShaderVariable(const char *name,
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int numVars,
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float *x)
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{
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this->Superclass::AddShaderVariable(name, numVars, x);
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if (this->PropProgram)
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{
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if (this->PropProgram->GetUniformVariables()==0)
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{
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vtkUniformVariables *vars=vtkUniformVariables::New();
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this->PropProgram->SetUniformVariables(vars);
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vars->Delete();
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}
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this->PropProgram->GetUniformVariables()->SetUniformf(name, numVars, x);
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}
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}
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// ----------------------------------------------------------------------------
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void vtkOpenGLProperty::AddShaderVariable(const char *name,
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int numVars,
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double *x)
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{
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float *xf = new float[numVars];
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for (int i = 0; i < numVars; i++)
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{
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xf[i] = static_cast<float> (x[i]);
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}
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this->AddShaderVariable(name, numVars, xf);
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delete [] xf;
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}
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// ----------------------------------------------------------------------------
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bool vtkOpenGLProperty::RenderShaders(vtkActor* vtkNotUsed(anActor), vtkRenderer* ren)
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{
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// unbind any textures for starters
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vtkOpenGLRenderer *oRenderer = static_cast<vtkOpenGLRenderer *>(ren);
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if (!oRenderer)
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{
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vtkErrorMacro("the vtkOpenGLProperty need a vtkOpenGLRenderer to render.");
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return false;
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}
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vtkOpenGLRenderWindow *context
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= vtkOpenGLRenderWindow::SafeDownCast(ren->GetRenderWindow());
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vtkShaderProgram2* prog = oRenderer->GetShaderProgram();
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if (prog)
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{
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assert("check: prog is initialized" && prog->GetContext() == context);
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}
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vtkOpenGLClearErrorMacro();
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vtkShaderProgram2 *propProg;
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if (this->Shading)
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{
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propProg = this->PropProgram;
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}
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else
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{
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propProg = 0;
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}
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bool useShaders = false;
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if (prog || propProg)
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{
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bool shader_support = vtkShaderProgram2::IsSupported(context);
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// mesa doesn't support separate compilation units
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// os mesa:
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// 9.1.4 some tests failing
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vtkOpenGLExtensionManager *extensions = context->GetExtensionManager();
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bool driver_support
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= !extensions->DriverIsMesa()
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|| extensions->GetIgnoreDriverBugs(
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"Mesa support for separate compilation units");
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if (shader_support && driver_support)
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{
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useShaders = true;
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}
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else
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{
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vtkErrorMacro(<<"Shaders are not supported by this context.");
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}
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}
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if (useShaders)
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{
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if (!this->CachedShaderProgram2)
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{
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this->CachedShaderProgram2 = vtkShaderProgram2::New();
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this->CachedShaderProgram2->SetContext(context);
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}
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bool needCacheUpdate = (prog != this->LastRendererShaderProgram2)
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|| (propProg != this->LastPropProgram);
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if (!needCacheUpdate && prog)
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{
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needCacheUpdate = this->CachedShaderProgram2->GetShaders()->GetMTime()
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< prog->GetShaders()->GetMTime();
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}
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if (!needCacheUpdate && propProg)
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{
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needCacheUpdate = this->CachedShaderProgram2->GetShaders()->GetMTime()
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< propProg->GetShaders()->GetMTime();
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}
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if (needCacheUpdate)
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{
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bool progHasVertex = (prog!=0 ? prog->HasVertexShaders() : false);
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bool progHasFragment = (prog!=0 ? prog->HasFragmentShaders() : false);
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bool needDefaultPropFuncVS = progHasVertex;
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bool needDefaultPropFuncFS = progHasFragment;
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bool needDefaultMainVS = false;
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bool needDefaultMainFS = false;
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if (propProg!=0)
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{
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needDefaultPropFuncVS = needDefaultPropFuncVS
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&& !propProg->HasVertexShaders();
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needDefaultPropFuncFS = needDefaultPropFuncFS
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&& !propProg->HasFragmentShaders();
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needDefaultMainVS = !progHasVertex
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&& propProg->HasVertexShaders();
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needDefaultMainFS = !progHasFragment
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&& propProg->HasFragmentShaders();
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}
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this->CachedShaderProgram2->ReleaseGraphicsResources();
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this->CachedShaderProgram2->GetShaders()->RemoveAllItems();
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this->CachedShaderProgram2->GetUniformVariables()->RemoveAllUniforms();
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this->UseDefaultPropVS = false;
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this->UseDefaultPropFS = false;
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this->UseDefaultMainVS = false;
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this->UseDefaultMainFS = false;
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if (prog)
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{
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this->CachedShaderProgram2->GetShaders()->AddCollection(
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prog->GetShaders());
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}
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if (propProg)
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{
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this->CachedShaderProgram2->GetShaders()->AddCollection(
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propProg->GetShaders());
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}
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this->LastRendererShaderProgram2 = prog;
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this->LastPropProgram = propProg;
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if (needDefaultPropFuncVS)
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{
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if (!this->DefaultPropVS)
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{
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this->UseDefaultPropVS = false;
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this->DefaultPropVS = vtkShader2::New();
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this->DefaultPropVS->SetType(VTK_SHADER_TYPE_VERTEX);
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this->DefaultPropVS->SetSourceCode(
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vtkOpenGLPropertyDefaultPropFunc_vs);
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this->DefaultPropVS->SetContext(context);
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}
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if (!this->UseDefaultPropVS)
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{
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this->CachedShaderProgram2->GetShaders()->AddItem(
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this->DefaultPropVS);
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this->UseDefaultPropVS = true;
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}
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}
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if (needDefaultPropFuncFS)
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{
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if (!this->DefaultPropFS)
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{
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this->UseDefaultPropFS = false;
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this->DefaultPropFS = vtkShader2::New();
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this->DefaultPropFS->SetType(VTK_SHADER_TYPE_FRAGMENT);
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this->DefaultPropFS->SetSourceCode(
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vtkOpenGLPropertyDefaultPropFunc_fs);
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this->DefaultPropFS->SetContext(context);
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}
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vtkUniformVariables *v = this->DefaultPropFS->GetUniformVariables();
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int value;
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value = 0;
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v->SetUniformi("useTexture", 1, &value);
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value = 0; // allocate texture unit?
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v->SetUniformi("uTexture", 1, &value);
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if (!UseDefaultPropFS)
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{
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this->CachedShaderProgram2->GetShaders()->AddItem(
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this->DefaultPropFS);
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this->UseDefaultPropFS=true;
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}
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}
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if (needDefaultMainVS)
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{
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if (!this->DefaultMainVS)
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{
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this->UseDefaultMainVS = false;
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this->DefaultMainVS = vtkShader2::New();
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this->DefaultMainVS->SetType(VTK_SHADER_TYPE_VERTEX);
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this->DefaultMainVS->SetSourceCode(vtkOpenGLPropertyDefaultMain_vs);
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this->DefaultMainVS->SetContext(context);
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}
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if (!this->UseDefaultMainVS)
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{
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this->CachedShaderProgram2->GetShaders()->AddItem(
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this->DefaultMainVS);
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this->UseDefaultMainVS = true;
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}
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}
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if (needDefaultMainFS)
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{
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if (!this->DefaultMainFS)
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{
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this->UseDefaultMainFS = false;
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this->DefaultMainFS=vtkShader2::New();
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this->DefaultMainFS->SetType(VTK_SHADER_TYPE_FRAGMENT);
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this->DefaultMainFS->SetSourceCode(vtkOpenGLPropertyDefaultMain_fs);
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this->DefaultMainFS->SetContext(context);
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}
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if (!this->UseDefaultMainFS)
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{
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this->CachedShaderProgram2->GetShaders()->AddItem(
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this->DefaultMainFS);
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this->UseDefaultMainFS = true;
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}
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}
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if (!this->ShaderDeviceAdapter2)
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{
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this->ShaderDeviceAdapter2 = vtkGLSLShaderDeviceAdapter2::New();
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}
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this->ShaderDeviceAdapter2->SetShaderProgram(this->CachedShaderProgram2);
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}
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if (prog &&
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|
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(needCacheUpdate
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|
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|| this->CachedShaderProgram2->GetUniformVariables()->GetMTime()
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< prog->GetUniformVariables()->GetMTime()))
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||
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{
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||
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vtkUniformVariables *v = prog->GetUniformVariables();
|
||
|
|
this->CachedShaderProgram2->GetUniformVariables()->Merge(v);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (propProg &&
|
||
|
|
(needCacheUpdate
|
||
|
|
|| this->CachedShaderProgram2->GetUniformVariables()->GetMTime()
|
||
|
|
< propProg->GetUniformVariables()->GetMTime()))
|
||
|
|
{
|
||
|
|
vtkUniformVariables *v = propProg->GetUniformVariables();
|
||
|
|
this->CachedShaderProgram2->GetUniformVariables()->Merge(v);
|
||
|
|
}
|
||
|
|
|
||
|
|
this->CurrentShaderProgram2 = this->CachedShaderProgram2;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
this->CurrentShaderProgram2 = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this->CurrentShaderProgram2)
|
||
|
|
{
|
||
|
|
this->CurrentShaderProgram2->Build();
|
||
|
|
if (this->CurrentShaderProgram2->GetLastBuildStatus()
|
||
|
|
!= VTK_SHADER_PROGRAM2_LINK_SUCCEEDED)
|
||
|
|
{
|
||
|
|
vtkErrorMacro("Couldn't build the shader program. At this point , it can be an error in a shader or a driver bug.");
|
||
|
|
this->CurrentShaderProgram2 = 0;
|
||
|
|
this->CachedShaderProgram2->ReleaseGraphicsResources();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
this->CurrentShaderProgram2->Use();
|
||
|
|
if(!this->CurrentShaderProgram2->IsValid())
|
||
|
|
{
|
||
|
|
vtkErrorMacro(<< "Using the current shader program is invalid with the current OpenGL state. Validation log=" << this->CurrentShaderProgram2->GetLastValidateLog());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Previous implementation of Render() used to test the prog variable to
|
||
|
|
// determine if new style texture was to be used. We are letting that logic
|
||
|
|
// be.
|
||
|
|
return (prog != NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
// ----------------------------------------------------------------------------
|
||
|
|
// Implement base class method.
|
||
|
|
void vtkOpenGLProperty::Render(vtkActor *anActor, vtkRenderer *ren)
|
||
|
|
{
|
||
|
|
bool rendered_shader_program2 = this->RenderShaders(anActor, ren);
|
||
|
|
|
||
|
|
vtkOpenGLRenderWindow* context = vtkOpenGLRenderWindow::SafeDownCast(
|
||
|
|
ren->GetRenderWindow());
|
||
|
|
|
||
|
|
if (!context)
|
||
|
|
{
|
||
|
|
// must be an OpenGL context.
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// set interpolation
|
||
|
|
switch (this->Interpolation)
|
||
|
|
{
|
||
|
|
case VTK_FLAT:
|
||
|
|
glShadeModel(GL_FLAT);
|
||
|
|
break;
|
||
|
|
case VTK_GOURAUD:
|
||
|
|
case VTK_PHONG:
|
||
|
|
default:
|
||
|
|
glShadeModel(GL_SMOOTH);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this->Lighting) // fixed-pipeline
|
||
|
|
{
|
||
|
|
glEnable(GL_LIGHTING);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
glDisable(GL_LIGHTING);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Set the PointSize
|
||
|
|
glPointSize(this->PointSize);
|
||
|
|
vtkOpenGLGL2PSHelper::SetPointSize(this->PointSize);
|
||
|
|
|
||
|
|
// Set the LineWidth
|
||
|
|
glLineWidth(this->LineWidth);
|
||
|
|
vtkOpenGLGL2PSHelper::SetLineWidth(this->LineWidth);
|
||
|
|
|
||
|
|
// Set the LineStipple
|
||
|
|
if (this->LineStipplePattern != 0xFFFF)
|
||
|
|
{
|
||
|
|
glEnable(GL_LINE_STIPPLE);
|
||
|
|
glLineStipple(this->LineStippleRepeatFactor,
|
||
|
|
static_cast<GLushort>(this->LineStipplePattern));
|
||
|
|
vtkOpenGLGL2PSHelper::EnableStipple(); // must be called after glLineStipple
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// still need to set this although we are disabling. else the ATI X1600
|
||
|
|
// (for example) still manages to stipple under certain conditions.
|
||
|
|
glLineStipple(this->LineStippleRepeatFactor,
|
||
|
|
static_cast<GLushort>(this->LineStipplePattern));
|
||
|
|
glDisable(GL_LINE_STIPPLE);
|
||
|
|
vtkOpenGLGL2PSHelper::DisableStipple();
|
||
|
|
}
|
||
|
|
|
||
|
|
glDisable(GL_TEXTURE_2D); // fixed-pipeline
|
||
|
|
|
||
|
|
// disable alpha testing (this may have been enabled
|
||
|
|
// by another actor in OpenGLTexture)
|
||
|
|
glDisable (GL_ALPHA_TEST);
|
||
|
|
|
||
|
|
glDisable(GL_COLOR_MATERIAL); // fixed-pipeline
|
||
|
|
|
||
|
|
// turn on/off backface culling
|
||
|
|
if (! this->BackfaceCulling && ! this->FrontfaceCulling)
|
||
|
|
{
|
||
|
|
glDisable (GL_CULL_FACE);
|
||
|
|
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
|
||
|
|
}
|
||
|
|
else if (this->BackfaceCulling)
|
||
|
|
{
|
||
|
|
glCullFace (GL_BACK);
|
||
|
|
glEnable (GL_CULL_FACE);
|
||
|
|
}
|
||
|
|
else //if both front & back culling on, will fall into backface culling
|
||
|
|
{ //if you really want both front and back, use the Actor's visibility flag
|
||
|
|
glCullFace (GL_FRONT);
|
||
|
|
glEnable (GL_CULL_FACE);
|
||
|
|
}
|
||
|
|
|
||
|
|
vtkOpenGLProperty::SetMaterialProperties(
|
||
|
|
static_cast<unsigned int>(GL_FRONT_AND_BACK),
|
||
|
|
this->Ambient, this->AmbientColor,
|
||
|
|
this->Diffuse, this->DiffuseColor,
|
||
|
|
this->Specular, this->SpecularColor, this->SpecularPower,
|
||
|
|
this->Opacity, context);
|
||
|
|
|
||
|
|
this->RenderTextures(anActor, ren, rendered_shader_program2);
|
||
|
|
this->Superclass::Render(anActor, ren);
|
||
|
|
}
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
void vtkOpenGLProperty::SetMaterialProperties(
|
||
|
|
unsigned int _face,
|
||
|
|
double ambient, const double ambient_color[3],
|
||
|
|
double diffuse, const double diffuse_color[3],
|
||
|
|
double specular, const double specular_color[3], double specular_power,
|
||
|
|
double opacity, vtkOpenGLRenderWindow* context)
|
||
|
|
{
|
||
|
|
GLenum face = static_cast<GLenum>(_face);
|
||
|
|
|
||
|
|
// Dealing with having a correct alpha (none square) in the framebuffer
|
||
|
|
// is only required if there is an alpha component in the framebuffer
|
||
|
|
// (doh...) and if we cannot deal directly with BlendFuncSeparate.
|
||
|
|
GLint alphaBits = context->GetAlphaBitPlanes();
|
||
|
|
bool premultiply_colors_with_alpha =
|
||
|
|
(vtkgl::BlendFuncSeparate==0 && alphaBits>0);
|
||
|
|
|
||
|
|
GLfloat ambientGL[4];
|
||
|
|
ComputeMaterialColor(ambientGL, premultiply_colors_with_alpha,
|
||
|
|
ambient, ambient_color, opacity);
|
||
|
|
|
||
|
|
GLfloat diffuseGL[4];
|
||
|
|
ComputeMaterialColor(diffuseGL, premultiply_colors_with_alpha,
|
||
|
|
diffuse, diffuse_color, opacity);
|
||
|
|
|
||
|
|
GLfloat specularGL[4];
|
||
|
|
ComputeMaterialColor(specularGL, premultiply_colors_with_alpha,
|
||
|
|
specular, specular_color, opacity);
|
||
|
|
|
||
|
|
glMaterialfv(face, GL_AMBIENT, ambientGL);
|
||
|
|
glMaterialfv(face, GL_DIFFUSE, diffuseGL);
|
||
|
|
glMaterialfv(face, GL_SPECULAR, specularGL);
|
||
|
|
glMaterialf(face, GL_SHININESS, static_cast<GLfloat>(specular_power));
|
||
|
|
|
||
|
|
// The material properties set above are used if shading is
|
||
|
|
// enabled. This color set here is used if shading is
|
||
|
|
// disabled. Shading is disabled in the
|
||
|
|
// vtkOpenGLPolyDataMapper::Draw() method if points or lines
|
||
|
|
// are encountered without normals.
|
||
|
|
double composite_color[3];
|
||
|
|
vtkProperty::ComputeCompositeColor(composite_color,
|
||
|
|
ambient, ambient_color, diffuse, diffuse_color, specular, specular_color);
|
||
|
|
|
||
|
|
GLfloat colorGL[4];
|
||
|
|
ComputeMaterialColor(colorGL, premultiply_colors_with_alpha,
|
||
|
|
1.0, composite_color, opacity);
|
||
|
|
glColor4fv(colorGL);
|
||
|
|
}
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
bool vtkOpenGLProperty::RenderTextures(vtkActor*, vtkRenderer* ren,
|
||
|
|
bool rendered_shader_program2)
|
||
|
|
{
|
||
|
|
vtkOpenGLRenderWindow* context = vtkOpenGLRenderWindow::SafeDownCast(
|
||
|
|
ren->GetRenderWindow());
|
||
|
|
assert(context!=NULL);
|
||
|
|
|
||
|
|
// render any textures.
|
||
|
|
int numTextures = this->GetNumberOfTextures();
|
||
|
|
if (numTextures > 0)
|
||
|
|
{
|
||
|
|
if (!rendered_shader_program2) // fixed-pipeline multitexturing or old XML shaders.
|
||
|
|
{
|
||
|
|
this->LoadMultiTexturingExtensions(ren);
|
||
|
|
if (vtkgl::ActiveTexture)
|
||
|
|
{
|
||
|
|
GLint numSupportedTextures;
|
||
|
|
glGetIntegerv(vtkgl::MAX_TEXTURE_UNITS, &numSupportedTextures);
|
||
|
|
for (int t = 0; t < numTextures; t++)
|
||
|
|
{
|
||
|
|
int texture_unit = this->GetTextureUnitAtIndex(t);
|
||
|
|
if (texture_unit >= numSupportedTextures || texture_unit < 0)
|
||
|
|
{
|
||
|
|
vtkErrorMacro("Hardware does not support the number of textures defined.");
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
vtkgl::ActiveTexture(vtkgl::TEXTURE0 +
|
||
|
|
static_cast<GLenum>(texture_unit));
|
||
|
|
this->GetTextureAtIndex(t)->Render(ren);
|
||
|
|
}
|
||
|
|
vtkgl::ActiveTexture(vtkgl::TEXTURE0);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
this->GetTextureAtIndex(0)->Render(ren); // one-texture fixed-pipeline
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// texture unit are assigned at each call to render, as render can
|
||
|
|
// happen in different/multiple passes.
|
||
|
|
|
||
|
|
vtkTextureUnitManager *m = context->GetTextureUnitManager();
|
||
|
|
for (int t = 0; t < numTextures; t++)
|
||
|
|
{
|
||
|
|
vtkTexture *tex = this->GetTextureAtIndex(t);
|
||
|
|
int unit = m->Allocate();
|
||
|
|
if (unit == -1)
|
||
|
|
{
|
||
|
|
vtkErrorMacro(<<" not enough texture units.");
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
this->SetTexture(unit,tex);
|
||
|
|
vtkgl::ActiveTexture(vtkgl::TEXTURE0 + static_cast<GLenum>(unit));
|
||
|
|
// bind (and load if not yet loaded)
|
||
|
|
tex->Render(ren);
|
||
|
|
}
|
||
|
|
vtkgl::ActiveTexture(vtkgl::TEXTURE0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
vtkOpenGLCheckErrorMacro("failed after Render");
|
||
|
|
|
||
|
|
return (numTextures > 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
void vtkOpenGLProperty::PostRender(vtkActor *actor, vtkRenderer *renderer)
|
||
|
|
{
|
||
|
|
vtkOpenGLClearErrorMacro();
|
||
|
|
|
||
|
|
vtkOpenGLRenderer *oRenderer = static_cast<vtkOpenGLRenderer *>(renderer);
|
||
|
|
vtkShaderProgram2 *prog = oRenderer->GetShaderProgram();
|
||
|
|
|
||
|
|
// Reset the face culling now we are done, leaking into text actor etc.
|
||
|
|
if (this->BackfaceCulling || this->FrontfaceCulling)
|
||
|
|
{
|
||
|
|
glDisable(GL_CULL_FACE);
|
||
|
|
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this->CurrentShaderProgram2) // ie if shaders are supported
|
||
|
|
{
|
||
|
|
this->CurrentShaderProgram2->Restore();
|
||
|
|
this->CurrentShaderProgram2 = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
this->Superclass::PostRender(actor, renderer);
|
||
|
|
|
||
|
|
// render any textures.
|
||
|
|
int numTextures = this->GetNumberOfTextures();
|
||
|
|
if (numTextures > 0 && vtkgl::ActiveTexture)
|
||
|
|
{
|
||
|
|
if (!prog) // fixed-pipeline multitexturing or old XML shaders.
|
||
|
|
{
|
||
|
|
GLint numSupportedTextures;
|
||
|
|
glGetIntegerv(vtkgl::MAX_TEXTURE_UNITS, &numSupportedTextures);
|
||
|
|
for (int i = 0; i < numTextures; i++)
|
||
|
|
{
|
||
|
|
int texture_unit = this->GetTextureUnitAtIndex(i);
|
||
|
|
if (texture_unit >= numSupportedTextures || texture_unit < 0)
|
||
|
|
{
|
||
|
|
vtkErrorMacro("Hardware does not support the number of textures defined.");
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
vtkgl::ActiveTexture(vtkgl::TEXTURE0+
|
||
|
|
static_cast<GLenum>(texture_unit));
|
||
|
|
// Disable any possible texture. Wouldn't having a PostRender on
|
||
|
|
// vtkTexture be better?
|
||
|
|
glDisable(GL_TEXTURE_1D);
|
||
|
|
glDisable(GL_TEXTURE_2D);
|
||
|
|
glDisable(vtkgl::TEXTURE_3D);
|
||
|
|
glDisable(vtkgl::TEXTURE_RECTANGLE_ARB);
|
||
|
|
glDisable(vtkgl::TEXTURE_CUBE_MAP);
|
||
|
|
}
|
||
|
|
vtkgl::ActiveTexture(vtkgl::TEXTURE0);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
vtkTextureUnitManager* m =
|
||
|
|
static_cast<vtkOpenGLRenderWindow *>(renderer->GetRenderWindow())->GetTextureUnitManager();
|
||
|
|
|
||
|
|
for (int t = 0; t < numTextures; t++)
|
||
|
|
{
|
||
|
|
int textureUnit=this->GetTextureUnitAtIndex(t);
|
||
|
|
m->Free(textureUnit);
|
||
|
|
}
|
||
|
|
vtkgl::ActiveTexture(vtkgl::TEXTURE0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
vtkOpenGLCheckErrorMacro("failed after PostRender");
|
||
|
|
}
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
// Implement base class method.
|
||
|
|
void vtkOpenGLProperty::BackfaceRender(vtkActor *vtkNotUsed(anActor), vtkRenderer *ren)
|
||
|
|
{
|
||
|
|
vtkOpenGLRenderWindow* context = vtkOpenGLRenderWindow::SafeDownCast(
|
||
|
|
ren->GetRenderWindow());
|
||
|
|
vtkOpenGLProperty::SetMaterialProperties(
|
||
|
|
static_cast<unsigned int>(GL_BACK),
|
||
|
|
this->Ambient, this->AmbientColor,
|
||
|
|
this->Diffuse, this->DiffuseColor,
|
||
|
|
this->Specular, this->SpecularColor, this->SpecularPower,
|
||
|
|
this->Opacity, context);
|
||
|
|
}
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
void vtkOpenGLProperty::LoadMultiTexturingExtensions(vtkRenderer* ren)
|
||
|
|
{
|
||
|
|
if (!vtkgl::MultiTexCoord2d || !vtkgl::ActiveTexture)
|
||
|
|
{
|
||
|
|
vtkOpenGLExtensionManager* extensions = vtkOpenGLExtensionManager::New();
|
||
|
|
extensions->SetRenderWindow(ren->GetRenderWindow());
|
||
|
|
|
||
|
|
// multitexture is a core feature of OpenGL 1.3.
|
||
|
|
// multitexture is an ARB extension of OpenGL 1.2.1
|
||
|
|
int supports_GL_1_3 = extensions->ExtensionSupported( "GL_VERSION_1_3" );
|
||
|
|
int supports_GL_1_2_1 = extensions->ExtensionSupported("GL_VERSION_1_2");
|
||
|
|
int supports_ARB_mutlitexture = extensions->ExtensionSupported(
|
||
|
|
"GL_ARB_multitexture");
|
||
|
|
|
||
|
|
if (supports_GL_1_3)
|
||
|
|
{
|
||
|
|
extensions->LoadExtension("GL_VERSION_1_3");
|
||
|
|
}
|
||
|
|
else if(supports_GL_1_2_1 && supports_ARB_mutlitexture)
|
||
|
|
{
|
||
|
|
extensions->LoadExtension("GL_VERSION_1_2");
|
||
|
|
extensions->LoadCorePromotedExtension("GL_ARB_multitexture");
|
||
|
|
}
|
||
|
|
extensions->Delete();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
void vtkOpenGLProperty::ReleaseGraphicsResources(vtkWindow *win)
|
||
|
|
{
|
||
|
|
// release any textures.
|
||
|
|
int numTextures = this->GetNumberOfTextures();
|
||
|
|
if (win && win->GetMapped() && numTextures > 0 && vtkgl::ActiveTexture)
|
||
|
|
{
|
||
|
|
vtkOpenGLClearErrorMacro();
|
||
|
|
GLint numSupportedTextures;
|
||
|
|
glGetIntegerv(vtkgl::MAX_TEXTURE_UNITS, &numSupportedTextures);
|
||
|
|
for (int i = 0; i < numTextures; i++)
|
||
|
|
{
|
||
|
|
if (vtkOpenGLTexture::SafeDownCast(this->GetTextureAtIndex(i))->GetIndex() == 0)
|
||
|
|
{
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
int texture_unit = this->GetTextureUnitAtIndex(i);
|
||
|
|
if (texture_unit >= numSupportedTextures || texture_unit < 0)
|
||
|
|
{
|
||
|
|
vtkErrorMacro("Hardware does not support the texture unit " << texture_unit << ".");
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
vtkgl::ActiveTexture(vtkgl::TEXTURE0 +
|
||
|
|
static_cast<GLenum>(texture_unit));
|
||
|
|
this->GetTextureAtIndex(i)->ReleaseGraphicsResources(win);
|
||
|
|
}
|
||
|
|
vtkgl::ActiveTexture(vtkgl::TEXTURE0);
|
||
|
|
vtkOpenGLCheckErrorMacro("failwed during ReleaseGraphicsResources");
|
||
|
|
}
|
||
|
|
else if (numTextures > 0 && vtkgl::ActiveTexture)
|
||
|
|
{
|
||
|
|
for (int i = 0; i < numTextures; i++)
|
||
|
|
{
|
||
|
|
this->GetTextureAtIndex(i)->ReleaseGraphicsResources(win);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
this->Superclass::ReleaseGraphicsResources(win);
|
||
|
|
|
||
|
|
if (this->CachedShaderProgram2)
|
||
|
|
{
|
||
|
|
this->CachedShaderProgram2->ReleaseGraphicsResources();
|
||
|
|
}
|
||
|
|
if (this->PropProgram)
|
||
|
|
{
|
||
|
|
this->PropProgram->ReleaseGraphicsResources();
|
||
|
|
}
|
||
|
|
if (this->DefaultMainVS)
|
||
|
|
{
|
||
|
|
this->DefaultMainVS->ReleaseGraphicsResources();
|
||
|
|
}
|
||
|
|
if (this->DefaultMainFS)
|
||
|
|
{
|
||
|
|
this->DefaultMainFS->ReleaseGraphicsResources();
|
||
|
|
}
|
||
|
|
if (this->DefaultPropVS)
|
||
|
|
{
|
||
|
|
this->DefaultPropVS->ReleaseGraphicsResources();
|
||
|
|
}
|
||
|
|
if (this->DefaultPropFS)
|
||
|
|
{
|
||
|
|
this->DefaultPropFS->ReleaseGraphicsResources();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
void vtkOpenGLProperty::PrintSelf(ostream& os, vtkIndent indent)
|
||
|
|
{
|
||
|
|
this->Superclass::PrintSelf(os,indent);
|
||
|
|
|
||
|
|
os << indent << "Shader2Collection: ";
|
||
|
|
if (this->PropProgram)
|
||
|
|
{
|
||
|
|
os << endl;
|
||
|
|
this->PropProgram->PrintSelf(os, indent.GetNextIndent());
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
os << "(none)" << endl;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this->CurrentShaderProgram2)
|
||
|
|
{
|
||
|
|
os << endl;
|
||
|
|
this->CurrentShaderProgram2->PrintSelf(os, indent.GetNextIndent());
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
os << "(none)" << endl;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this->ShaderDeviceAdapter2)
|
||
|
|
{
|
||
|
|
os << endl;
|
||
|
|
this->ShaderDeviceAdapter2->PrintSelf(os, indent.GetNextIndent());
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
os << "(none)" << endl;
|
||
|
|
}
|
||
|
|
}
|