ajout vertex attributes dans rendu VBO GLSL 2.1

Apps/Examples/extrusionView.cpp

@@ -118,7 +118,7 @@ void myGlutWin::init()
 
 	glClearColor(0.1f,0.1f,0.1f,0.0f);
 	glEnable(GL_DEPTH_TEST);
-	glEnable(GL_NORMALIZE);
+//	glEnable(GL_NORMALIZE);
 
 	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
 	glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1);

Apps/Tuto/CMakeLists.txt

@@ -55,9 +55,12 @@ target_link_libraries( tp_master
 
 add_executable( tuto_mt tuto_mt.cpp)
 target_link_libraries( tuto_mt
-	container topology utils algo ${COMMON_LIBS} boost_thread)
+	container topology utils algo ${COMMON_LIBS} boost_thread-mt)
 
 add_executable( tuto_ogl3 tuto_ogl3.cpp)
 target_link_libraries( tuto_ogl3
 	container topology utils algo  ${COMMON_LIBS} )
 
+add_executable( tuto_ogl2 tuto_ogl2.cpp)
+target_link_libraries( tuto_ogl2
+	container topology utils algo  ${COMMON_LIBS} )

Apps/Tuto/tuto_mt.cpp

@@ -268,6 +268,14 @@ public:
 
 int main(int argc, char **argv)
 {
+
+	if (argc < 2)
+	{
+		std::cerr << argv[0] << "  mesh"<< std::endl;
+		exit(1);
+	}
+
+
 	// declaration of the map
 	PFP::MAP myMap;
 
@@ -279,8 +287,7 @@ int main(int argc, char **argv)
 	MyGlutWin mgw(&argc, argv, 800, 800);
 	glewInit();
 
-	// release context (leave it for thread 0);
-	mgw.releaseContext();
+
 
 	std::vector<std::string> attrNames ;
 	if(!Algo::Import::importMesh<PFP>(myMap, argv[1], attrNames))
@@ -295,8 +302,6 @@ int main(int argc, char **argv)
 	// cree un handler d'attribut pour la position des points (créé lors de l'import)
 	position = myMap.getAttribute<PFP::VEC3>(VERTEX_ORBIT, attrNames[0]) ;
 
-
-	std::cout << "Sommets:"<< position.end()<< std::endl;
 	// cree un handler pour les normales aux sommets
 	AttributeHandler<PFP::VEC3> normal = myMap.addAttribute<PFP::VEC3>(VERTEX_ORBIT, "normal");
 	AttributeHandler<PFP::VEC3> normal2 = myMap.addAttribute<PFP::VEC3>(VERTEX_ORBIT, "normal2");
@@ -332,8 +337,6 @@ int main(int argc, char **argv)
 	std::cout << "length :" <<le.first/le.second<< std::endl;
 
 
-
-
 	// on enleve les markers ajoutes
 	myMap.removeThreadMarker(4);
 

Apps/Tuto/tuto_ogl2.cpp

+/*******************************************************************************
+* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
+* version 0.1                                                                  *
+* Copyright (C) 2009, IGG Team, LSIIT, University of Strasbourg                *
+*                                                                              *
+* This library is free software; you can redistribute it and/or modify it      *
+* under the terms of the GNU Lesser General Public License as published by the *
+* Free Software Foundation; either version 2.1 of the License, or (at your     *
+* option) any later version.                                                   *
+*                                                                              *
+* This library is distributed in the hope that it will be useful, but WITHOUT  *
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or        *
+* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License  *
+* for more details.                                                            *
+*                                                                              *
+* You should have received a copy of the GNU Lesser General Public License     *
+* along with this library; if not, write to the Free Software Foundation,      *
+* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.           *
+*                                                                              *
+* Web site: https://iggservis.u-strasbg.fr/CGoGN/                              *
+* Contact information: cgogn@unistra.fr                                        *
+*                                                                              *
+*******************************************************************************/
+
+#include <iostream>
+
+#include "Utils/glutwin.h"
+
+#include "Topology/generic/parameters.h"
+#include "Topology/map/map2.h"
+#include "Topology/generic/embeddedMap2.h"
+
+
+#include "Algo/Geometry/boundingbox.h"
+#include "Algo/Render/vbo_MapRender.h"
+
+#include "Algo/Modelisation/polyhedron.h"
+#include "Geometry/vector_gen.h"
+#include "Algo/Geometry/normal.h"
+
+using namespace CGoGN ;
+
+
+/**
+ * Struct that contains some informations about the types of the manipulated objects
+ * Mainly here to be used by the algorithms that are parameterized by it
+ */
+struct PFP: public PFP_STANDARD
+{
+	// definition of the type of the map
+	typedef EmbeddedMap2<Map2> MAP;
+};
+
+
+/**
+ * A class for a little interface and rendering
+ */
+class MyGlutWin: public Utils::SimpleGlutWin
+{
+public:
+
+	void myRedraw();
+
+    PFP::REAL gWidthObj;
+    PFP::VEC3 gPosObj;
+
+    Algo::Render::VBO::MapRender_VBO* m_render;
+
+    Utils::GLSLShader shaders[4];
+
+    Geom::Vec4f colSpec;
+	float shininess;
+
+    int rt;
+
+ 	MyGlutWin(int* argc, char **argv, int winX, int winY) : SimpleGlutWin(argc, argv, winX, winY),rt(0)
+    {
+ 		shaders[0].loadShaders("phong_gl2.vert","phong_gl2.frag");
+
+ 	    colSpec = Geom::Vec4f(0.9f, 0.9f, 0.9f, 1.0f) ;
+ 	    shininess = 80.0f ;
+    }
+ 	~MyGlutWin()
+ 	{
+ 		delete m_render ;
+ 	}
+};
+
+
+
+
+void MyGlutWin::myRedraw()
+{
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+	glPushMatrix();
+
+	// center the scene
+	float sc = 50./gWidthObj;
+	glScalef(sc,sc,sc);
+	glTranslatef(-gPosObj[0],-gPosObj[1],-gPosObj[2]);
+
+	glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+	glEnable(GL_LIGHTING);
+	glEnable(GL_COLOR_MATERIAL);
+
+	// some materials
+	glMaterialfv(GL_FRONT, GL_SPECULAR, colSpec.data()) ;
+	glMaterialf(GL_FRONT, GL_SHININESS, shininess) ;
+
+	// bin shader
+	shaders[0].bind();
+
+	// draw triangles
+	m_render->draw(Algo::Render::VBO::TRIANGLES) ;
+
+	// unbind (in case of other rendering wihtout shader)
+	shaders[0].unbind();
+
+	glPopMatrix();
+
+
+}
+
+
+
+
+int main(int argc, char **argv)
+{
+
+    // instanciation of the interface
+	MyGlutWin mgw(&argc, argv, 800, 800);
+
+	// declaration of the map
+	PFP::MAP myMap;
+
+	AttributeHandler<PFP::VEC3> position = myMap.addAttribute<PFP::VEC3>(VERTEX_ORBIT, "position");
+	AttributeHandler<PFP::VEC3> normal = myMap.addAttribute<PFP::VEC3>(VERTEX_ORBIT, "normal");
+
+	Algo::Modelisation::Polyhedron<PFP> prim3(myMap, position);
+	prim3.tore_topo(16, 32);
+	prim3.embedTore(30.0f,10.0f);
+
+	// compute the normal of mesh
+	Algo::Geometry::computeNormalVertices<PFP>(myMap,position,normal);
+
+	mgw.init();
+
+	glClearColor(0.1,0.1,0.1,0.0);
+	glEnable(GL_DEPTH_TEST);
+
+    // computation of the bounding box
+    Geom::BoundingBox<PFP::VEC3> bb = Algo::Geometry::computeBoundingBox<PFP>(myMap, position);
+    mgw.gWidthObj = std::max<PFP::REAL>(std::max<PFP::REAL>(bb.size(0), bb.size(1)), bb.size(2));
+    mgw.gPosObj = (bb.min() +  bb.max()) / PFP::REAL(2);
+
+
+    // instanciation of the vbo renderer
+    mgw.m_render = new Algo::Render::VBO::MapRender_VBO();
+
+    // vertex attribute declaration (max 12)
+    mgw.m_render->useVertexAttributeName("ColorPerVertex",mgw.shaders[0]);
+
+    // must relink the shader after binding attributes
+    mgw.shaders[0].link();
+
+    // copy data from map attributes to vbo for  vertex attribute
+    mgw.m_render->updateVAData("ColorPerVertex", normal);
+
+    // copy data from map attributes to vbo
+    mgw.m_render->updateData(Algo::Render::VBO::POSITIONS, position);
+    mgw.m_render->updateData(Algo::Render::VBO::NORMALS, normal);
+
+    // update the renderer (primitives)
+	SelectorTrue allDarts;
+    mgw.m_render->initPrimitives<PFP>(myMap, allDarts,Algo::Render::VBO::TRIANGLES);
+//    mgw.m_render->initPrimitives<PFP>(myMap, allDarts,Algo::Render::VBO::LINES);
+//    mgw.m_render->initPrimitives<PFP>(myMap, allDarts,Algo::Render::VBO::POINTS);
+
+
+
+    mgw.mainLoop();
+
+    return 0;
+}

include/Algo/Render/vbo_MapRender.h

@@ -35,6 +35,8 @@
 #include "Container/convert.h"
 #include "Geometry/vector_gen.h"
 
+#include "Utils/GLSLShader.h"
+
 namespace CGoGN
 {
 
@@ -71,13 +73,26 @@ enum bufferIndex {
 	FLAT_BUFFER = 3,
 	POSITIONS_BUFFER = 4,
 	NORMALS_BUFFER = 5,
-	COLORS_BUFFER = 6
-
-
+	COLORS_BUFFER = 6,
+	FIRST_ATTRIBUTE_BUFFER = 7
 } ;
 
-const unsigned int NB_BUFFERS = 7 ;
+const unsigned int NB_BUFFERS = 20 ;
 
+// Warning using attributes forbid using the following buildin attributes
+// gl_SecondaryColor
+// gl_FogCoord
+// gl_MultiTexCoord0
+// gl_MultiTexCoord1
+// gl_MultiTexCoord2
+// gl_MultiTexCoord3
+// gl_MultiTexCoord4
+// gl_MultiTexCoord5
+// gl_MultiTexCoord6
+// gl_MultiTexCoord7
+const unsigned int FIRST_VERTEX_ATTRIB = 4 ;
+
+const unsigned int NB_ATTRIBUTES = 12 ;
 
 class MapRender_VBO
 {
@@ -90,6 +105,15 @@ protected:
 	bool m_allocatedBuffers[NB_BUFFERS] ;
 	bool m_usedBuffers[NB_BUFFERS] ;
 
+	bool m_allocatedAttributes[NB_ATTRIBUTES] ;
+	bool m_usedAttributes[NB_ATTRIBUTES] ;
+	unsigned int m_AttributesDataSize[NB_ATTRIBUTES];
+
+	unsigned int m_nbVertexAttrib;
+
+	std::map<std::string,GLuint> m_attributebyName;
+
+
 	/**
 	 * number of indices of triangles
 	 */
@@ -136,7 +160,59 @@ public:
 	void enableBuffers(int buffersMask) ;
 	void disableBuffers(int buffersMask) ;
 
+
+	/**
+	 * update the data for vertex attributes
+	 * @param vertex_attrib vertex attrib id
+	 * @param attrib attribute where data is stored
+	 * @param conv Callback of attribute conversion (NULL if direct copy, default value)
+	 */
+	template <typename ATTR_HANDLER>
+	void updateVAData(unsigned int vertex_attrib, const ATTR_HANDLER& attrib, ConvertAttrib* conv = NULL) ;
+
+	/**
+	 * update the data for vertex attributes
+	 * @param va_name vertex attrib name (in shader)
+	 * @param attrib attribute where data is stored
+	 * @param conv Callback of attribute conversion (NULL if direct copy, default value)
+	 */
+	template <typename ATTR_HANDLER>
+	void updateVAData(const std::string& name, const ATTR_HANDLER& attrib, ConvertAttrib* conv = NULL) ;
+
+
+	/**
+	 * enable a vertex attribute for rendering (updateDate automatically enable attrib)
+	 */
+	void enableVertexAttrib(const std::string& name);
+
+	/**
+	 * disable a vertex attribute for rendering
+	 */
+	void disableVertexAttrib(const std::string& name);
+
+
+	/**
+	 * associate a name to a vertex attribute
+	 * @param name the name in shader
+	 * @param sh the shader
+	 * @return the id to use with update (if not using name)
+	 */
+	unsigned int useVertexAttributeName(const std::string& name, const Utils::GLSLShader& sh);
+
 protected:
+
+	unsigned int vbo_index_attribute( unsigned int att) { return att + FIRST_ATTRIBUTE_BUFFER - FIRST_VERTEX_ATTRIB;}
+
+	/**
+	 * enable a vertex attribute for rendering (updateDate automatically enable attrib)
+	 */
+	void enableVertexAttrib(unsigned int index);
+
+	/**
+	 * disable a vertex attribute for rendering
+	 */
+	void disableVertexAttrib(unsigned int index);
+
 	/**
 	* fill buffer directly from attribute
 	*/

include/Algo/Render/vbo_MapRender.hpp

@@ -37,6 +37,111 @@ namespace VBO
 {
 
 
+// inline functions:
+inline void MapRender_VBO::enableVertexAttrib(unsigned int index)
+{
+	m_usedAttributes[index] = true ;
+}
+
+inline void MapRender_VBO::disableVertexAttrib(unsigned int index)
+{
+	m_usedAttributes[index] = false ;
+}
+
+
+/**
+ * enable a vertex attribute for rendering (updateDate automatically enable attrib)
+ */
+inline void MapRender_VBO::enableVertexAttrib(const std::string& name)
+{
+	std::map<std::string,unsigned int>::iterator it = m_attributebyName.find(name);
+	if (it != m_attributebyName.end())
+		enableVertexAttrib(it->second);
+	else
+		std::cerr <<"enableVertexAttrib: unknown attribute "<< name << std::endl;
+}
+
+
+
+inline void MapRender_VBO::disableVertexAttrib(const std::string& name)
+{
+	std::map<std::string,unsigned int>::iterator it = m_attributebyName.find(name);
+	if (it != m_attributebyName.end())
+		disableVertexAttrib(it->second);
+	else
+		std::cerr <<"disableVertexAttrib: unknown attribute "<< name << std::endl;
+}
+
+
+
+inline unsigned int MapRender_VBO::useVertexAttributeName(const std::string& name, const Utils::GLSLShader& sh)
+{
+	unsigned int vertex_attrib =0;
+
+	std::map<std::string,unsigned int>::iterator it = m_attributebyName.find(name);
+	if (it == m_attributebyName.end())
+	{
+		vertex_attrib = m_nbVertexAttrib++;
+		m_attributebyName.insert(std::pair<std::string,unsigned int>(name,vertex_attrib));
+	}
+	else
+		vertex_attrib = it->second;
+
+	sh.bindAttrib(vertex_attrib+FIRST_VERTEX_ATTRIB,name.c_str());
+
+	return vertex_attrib;
+}
+
+
+template <typename ATTR_HANDLER>
+void MapRender_VBO::updateVAData(unsigned int vertex_attrib, const ATTR_HANDLER& attrib, ConvertAttrib* conv)
+{
+	// choisit le bon buffer en fonction du paramètre upType
+
+	unsigned int indexVBO = vertex_attrib + FIRST_ATTRIBUTE_BUFFER;
+
+	if (! m_allocatedAttributes[vertex_attrib] )
+	{
+		glGenBuffersARB(1, &(m_VBOBuffers[indexVBO])) ;
+		m_allocatedAttributes[vertex_attrib] = true ;
+	}
+
+
+	m_usedAttributes[vertex_attrib] = true ;
+	m_AttributesDataSize[vertex_attrib]= sizeof(typename ATTR_HANDLER::DATA_TYPE) / sizeof(float);
+
+
+	if (conv)
+		fillBufferConvert(indexVBO, attrib, conv) ;
+	else
+		fillBufferDirect(indexVBO, attrib) ;
+}
+
+
+
+
+
+
+template <typename ATTR_HANDLER>
+void MapRender_VBO::updateVAData(const std::string& name, const ATTR_HANDLER& attrib, ConvertAttrib* conv)
+{
+	unsigned int vertex_attrib = 0;
+
+	std::map<std::string,unsigned int>::iterator it = m_attributebyName.find(name);
+	if (it == m_attributebyName.end())
+	{
+		vertex_attrib = m_nbVertexAttrib++;
+		m_attributebyName.insert(std::pair<std::string,unsigned int>(name,vertex_attrib));
+		std::cerr << "warning update data with unknown name, adding vertex attribute"<< std::endl;
+	}
+	else
+	{
+		vertex_attrib = it->second;
+	}
+
+	updateVAData<ATTR_HANDLER>(vertex_attrib,attrib,conv);
+}
+
 
 template <typename ATTR_HANDLER>
 void MapRender_VBO::updateData(int upType, const ATTR_HANDLER& attrib, ConvertAttrib* conv)
@@ -323,14 +428,6 @@ void MapRender_VBO::initPrimitives(typename PFP::MAP& map, const FunctorSelect&
 				initLines<PFP>(map,good,tableIndices,thread) ;
 			m_nbIndicesLines = tableIndices.size();
 			vbo_ind = m_VBOBuffers[LINE_INDICES];
-
-			for (unsigned int i=0; i< tableIndices.size(); ++i)
-			{
-				std::cout << tableIndices[i]<< "/";
-				if (i%2 == 1) std::cout << std::endl;
-			}
-			 std::cout << std::endl;
-
 			break;
 		case POINTS:
 			initPoints<PFP>(map,good,tableIndices,thread);

include/Utils/GLSLShader.h

@@ -196,6 +196,11 @@ public:
 	bool loadShaders(const std::string& vs, const std::string& fs, const std::string& gs, GLint inputGeometryPrimitive=GL_TRIANGLES,GLint outputGeometryPrimitive=GL_TRIANGLES);
 
 
+	/**
+	 * Link the shader do it just after binding the attributes
+	 */
+	bool link();
+
 	inline bool		isCreated();
 
 	bool			isBinded();

lib/Shaders/phong_gl2.frag

+//Pixel_Shader
+
+varying vec3 normal, lightDir, eyeVec;
+varying vec3 vcolor; 
+
+void main (void)
+{
+	vec4 final_color = vec4(0.0,0.0,0.0,0.0);
+							
+	vec3 N = normalize(normal);
+	vec3 L = normalize(lightDir);
+	
+	float lambertTerm = dot(N,L);
+	
+	if(lambertTerm > 0.0)
+	{
+		final_color += vec4(vcolor,1.0) * lambertTerm;	
+		
+		vec3 E = normalize(eyeVec);
+		vec3 R = reflect(-L, N);
+		float specular = pow( max(dot(R, E), 0.0), 
+		                 gl_FrontMaterial.shininess );
+		final_color += gl_FrontMaterial.specular * 
+					   specular;	
+	}
+
+	gl_FragColor = final_color;
+
+}

lib/Shaders/phong_gl2.vert

+//Vertex_Shader
+
+attribute vec3 ColorPerVertex;
+
+varying vec3 normal, lightDir, eyeVec;
+varying vec3 vcolor; 
+
+void main()
+{	
+	normal = gl_NormalMatrix * gl_Normal;
+
+	vec3 vVertex = vec3(gl_ModelViewMatrix * gl_Vertex);
+
+	lightDir = vec3(gl_LightSource[0].position.xyz - vVertex);
+	eyeVec = -vVertex;
+
+	vcolor = ColorPerVertex;
+
+	gl_Position = ftransform();		
+}

src/Algo/Render/vbo_MapRender.cpp

@@ -37,6 +37,7 @@ namespace VBO
 {
 
 MapRender_VBO::MapRender_VBO():
+	m_nbVertexAttrib(0),
 	m_nbIndicesTri(0),
 	m_nbIndicesLines(0)
 {
@@ -46,6 +47,14 @@ MapRender_VBO::MapRender_VBO():
 		m_allocatedBuffers[i] = false ;
 		m_usedBuffers[i] = false ;
 	}
+
+	for(unsigned int i = 0; i < NB_ATTRIBUTES; ++i)
+	{
+		m_allocatedAttributes[i] = false ;
+		m_usedAttributes[i] = false ;
+		m_AttributesDataSize[i]=0;
+	}
+
 }
 
 MapRender_VBO::~MapRender_VBO()
@@ -56,6 +65,7 @@ MapRender_VBO::~MapRender_VBO()
 
 
 MapRender_VBO::MapRender_VBO(const MapRender_VBO& mrvbo):
+	m_nbVertexAttrib(mrvbo.m_nbVertexAttrib),
 	m_nbIndicesTri(0),
 	m_nbIndicesLines(0)
 {
@@ -73,6 +83,16 @@ MapRender_VBO::MapRender_VBO(const MapRender_VBO& mrvbo):
 		m_allocatedBuffers[i] = mrvbo.m_allocatedBuffers[i] ;
 		m_usedBuffers[i] = mrvbo.m_usedBuffers[i] ;
 	}
+
+	for(unsigned int i = 0; i < NB_ATTRIBUTES; ++i)
+	{
+		m_allocatedAttributes[i] = mrvbo.m_allocatedAttributes[i] ;
+		m_usedAttributes[i] = mrvbo.m_usedAttributes[i] ;
+		m_AttributesDataSize[i] = mrvbo.m_AttributesDataSize[i];
+	}
+
+
+
 }
 
 
@@ -163,6 +183,15 @@ void MapRender_VBO::drawTriangles(bool bindColors)
 		}
 	}
 
+	for(unsigned int j = 0; j < m_nbVertexAttrib; ++j)
+		if(m_usedAttributes[j])
+		{
+			glBindBufferARB(GL_ARRAY_BUFFER, m_VBOBuffers[j+ FIRST_ATTRIBUTE_BUFFER]);
+			glEnableVertexAttribArray(j+FIRST_VERTEX_ATTRIB);
+			glVertexAttribPointer(j+FIRST_VERTEX_ATTRIB, m_AttributesDataSize[j], GL_FLOAT, false, 0, 0);
+		}
+
+
 	glDrawElements(GL_TRIANGLES, m_nbIndicesTri, GL_UNSIGNED_INT, 0);
 	glDisableClientState(GL_INDEX_ARRAY);