wall paper shader

Apps/Examples/texturesExample.cpp

@@ -58,15 +58,22 @@ void TexView::cb_initGL()
 
 	m_texture = new Utils::Texture<2,Geom::Vec3uc>(GL_UNSIGNED_BYTE);
 
+	m_textureWP = new Utils::Texture<2,Geom::Vec3uc>(GL_UNSIGNED_BYTE);
+
 	if (m_texture->load(m_fileNameTex))
 		m_texture->update();
 	else
 		computeImage();
 //		CGoGNerr << "Problem loading image"<< CGoGNendl;
 
+	computeImage();
 	m_texture->setWrapping(GL_CLAMP_TO_EDGE);
 	m_texture->update();
 
+	computeImage();
+	m_textureWP->setWrapping(GL_CLAMP_TO_EDGE);
+	m_textureWP->update();
+
 	m_shader = new Utils::ShaderSimpleTexture();
 	m_shader->setAttributePosition(m_positionVBO);
 	m_shader->setAttributeTexCoord(m_texcoordVBO);
@@ -85,6 +92,12 @@ void TexView::cb_initGL()
 	m_shader2->setSpecular(Geom::Vec4f(0.5));
 	registerShader(m_shader2);
 
+	m_shaderWP = new Utils::ShaderWallPaper();
+	m_shaderWP->setTextureUnit(GL_TEXTURE2);
+	m_shaderWP->setTexture(m_textureWP);
+	registerShader(m_shaderWP);
+
+
 	glEnable(GL_TEXTURE_2D);
 
 	if (!m_obj.hasNormals())
@@ -104,6 +117,8 @@ void TexView::cb_redraw()
 {
 	glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
 
+	m_shaderWP->draw();
+
 	if (m_phong)
 	{
 		m_shader2->activeTexture();
@@ -187,16 +202,27 @@ void TexView::computeImage()
 	colorTable.push_back(Geom::Vec3uc(0,255,255));
 	colorTable.push_back(Geom::Vec3uc(255,255,255));
 
-	m_texture->create(Geom::Vec2ui(512,512));
+//	m_texture->create(Geom::Vec2ui(512,512));
+
+	m_textureWP->create(Geom::Vec2ui(512,512));
 
 #define WIDTHCHECKER 20
 
-	for (unsigned int ki = 0; ki < m_texture->size()[0]; ++ki)
+//	for (unsigned int ki = 0; ki < m_texture->size()[0]; ++ki)
+//	{
+//		for (unsigned int kj = 0; kj <  m_texture->size()[1]; ++kj)
+//		{
+//			unsigned int kc = ((kj/WIDTHCHECKER)*m_texture->size()[0] + (ki/WIDTHCHECKER))%7;
+//			(*m_texture)(ki,kj) =colorTable[kc];
+//		}
+//	}
+
+	for (unsigned int ki = 0; ki < m_textureWP->size()[0]; ++ki)
 	{
-		for (unsigned int kj = 0; kj <  m_texture->size()[1]; ++kj)
+		for (unsigned int kj = 0; kj <  m_textureWP->size()[1]; ++kj)
 		{
-			unsigned int kc = ((kj/WIDTHCHECKER)*m_texture->size()[0] + (ki/WIDTHCHECKER))%7;
-			(*m_texture)(ki,kj) =colorTable[kc];
+			unsigned int kc = ((kj/WIDTHCHECKER)*m_textureWP->size()[0] + (ki/WIDTHCHECKER))%7;
+			(*m_textureWP)(ki,kj) =colorTable[kc];
 		}
 	}
 #undef WIDTHCHECKER

Apps/Examples/texturesExample.h

@@ -36,6 +36,8 @@
 #include "Algo/Render/GL2/mapRender.h"
 #include "Algo/Import/importObjTex.h"
 
+#include "Utils/Shaders/shaderWallPaper.h"
+
 
 // forward definitions (minimize includes)
 namespace CGoGN { namespace Algo { namespace Render { namespace GL2 { class MapRender; }}}}
@@ -74,10 +76,13 @@ public:
 	unsigned int m_nbIndices;
 
 	Utils::Texture<2,Geom::Vec3uc>* m_texture;
+	Utils::Texture<2,Geom::Vec3uc>* m_textureWP;
+
 
 	// shader simple texture
 	Utils::ShaderSimpleTexture* m_shader;
 	Utils::ShaderPhongTexture* m_shader2;
+	Utils::ShaderWallPaper* m_shaderWP;
 
 	bool m_phong;
 

Apps/SandBox/CMakeLists.txt

@@ -41,6 +41,10 @@ QT4_WRAP_CPP(testPlaneCutting_moc testPlaneCutting.h)
 add_executable(testPlaneCutting testPlaneCutting.cpp  ${testPlaneCutting_ui} ${testPlaneCutting_moc})
 target_link_libraries(testPlaneCutting ${CGoGN_LIBS_D} ${CGoGN_EXT_LIBS})
 
+QT4_WRAP_CPP(wallPaper_moc wallPaper.h)
+add_executable(wallPaper wallPaper.cpp  ${wallPaper_moc})
+target_link_libraries(wallPaper ${CGoGN_LIBS_D} ${CGoGN_EXT_LIBS})
+
 # Example with Qt
 #
 #QT4_WRAP_CPP(tuto1_moc tuto1.h)

Apps/SandBox/wallPaper.cpp

+/*******************************************************************************
+* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
+* version 0.1                                                                  *
+* Copyright (C) 2009-2012, 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: http://cgogn.unistra.fr/                                           *
+* Contact information: cgogn@unistra.fr                                        *
+*                                                                              *
+*******************************************************************************/
+
+#include "wallPaper.h"
+#include "Algo/Tiling/Surface/square.h"
+
+using namespace CGoGN ;
+
+void MyQT::cb_initGL()
+{
+	position = myMap.addAttribute<PFP::VEC3, VERTEX, MAP>("position");
+	Algo::Surface::Tilings::Square::Cylinder<PFP> c(myMap,20,20);
+	c.embedIntoCylinder(position,0.5,0.7,1.0);
+	Geom::BoundingBox<PFP::VEC3> bb = Algo::Geometry::computeBoundingBox<PFP>(myMap, position);
+	float lWidthObj = std::max<PFP::REAL>(std::max<PFP::REAL>(bb.size(0), bb.size(1)), bb.size(2));
+	Geom::Vec3f lPosObj = (bb.min() +  bb.max()) / PFP::REAL(2);
+	setParamObject(lWidthObj,lPosObj.data());
+
+	Utils::GLSLShader::setCurrentOGLVersion(2);
+
+	// create the render
+	m_render = new Algo::Render::GL2::MapRender();
+
+	// create VBO for position
+	m_positionVBO = new Utils::VBO();
+	m_positionVBO->updateData(position);
+
+	m_shader = new Utils::ShaderSimpleColor();
+	m_shader->setAttributePosition(m_positionVBO);
+	m_shader->setColor(Geom::Vec4f(1.0,0.0,0.0,0.));
+
+	m_render->initPrimitives<PFP>(myMap, Algo::Render::GL2::LINES);
+
+	registerShader(m_shader);
+
+
+	// FOR WALL PAPER
+
+	m_textureWP = new Utils::Texture<2,Geom::Vec3uc>(GL_UNSIGNED_BYTE);
+	if (!m_textureWP->load("../SCHNApps/resources/cgogn/cgogn2.png"))
+		computeTexture();
+	m_textureWP->update();
+	m_textureWP->setWrapping(GL_CLAMP_TO_EDGE);
+
+	m_shaderWP = new Utils::ShaderWallPaper();
+	m_shaderWP->setTextureUnit(GL_TEXTURE0);
+	m_shaderWP->setTexture(m_textureWP);
+	registerShader(m_shaderWP);
+
+	glEnable(GL_TEXTURE_2D);
+
+
+}
+
+void MyQT::cb_redraw()
+{
+	// FOR WALL PAPER
+	m_render->draw(m_shader, Algo::Render::GL2::LINES);
+
+	m_shaderWP->draw();
+}
+
+
+void MyQT::cb_keyPress(int keycode)
+{
+	switch(keycode)
+	{
+	case 'l' :
+		if (m_textureWP->load("../SCHNApps/resources/cgogn/cgogn2.png"))
+			m_textureWP->update();
+		m_textureWP->setWrapping(GL_CLAMP_TO_EDGE);
+		break;
+
+	case 'c' :
+		computeTexture();
+		m_textureWP->update();
+		m_textureWP->setWrapping(GL_CLAMP_TO_EDGE);
+		break;
+	}
+	updateGL();
+}
+
+
+
+void MyQT::computeTexture()
+{
+	std::vector<Geom::Vec3f> colorTable;
+	colorTable.push_back(Geom::Vec3uc(255,0,0));
+	colorTable.push_back(Geom::Vec3uc(0,255,0));
+	colorTable.push_back(Geom::Vec3uc(0,0,255));
+	colorTable.push_back(Geom::Vec3uc(255,255,0));
+	colorTable.push_back(Geom::Vec3uc(255,0,255));
+	colorTable.push_back(Geom::Vec3uc(0,255,255));
+	colorTable.push_back(Geom::Vec3uc(255,255,255));
+
+	m_textureWP->create(Geom::Vec2ui(16,16));
+
+#define WIDTHCHECKER 2
+	for (unsigned int ki = 0; ki < m_textureWP->size()[0]; ++ki)
+	{
+		for (unsigned int kj = 0; kj <  m_textureWP->size()[1]; ++kj)
+		{
+			unsigned int kc = ((kj/WIDTHCHECKER)*m_textureWP->size()[0] + (ki/WIDTHCHECKER))%7;
+			(*m_textureWP)(ki,kj) =colorTable[kc];
+		}
+	}
+#undef WIDTHCHECKER
+}
+
+int main(int argc, char **argv)
+{
+	// interface:
+	QApplication app(argc, argv);
+	MyQT sqt;
+
+	sqt.show();
+
+	return app.exec();
+}

Apps/SandBox/wallPaper.h

+/*******************************************************************************
+* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
+* version 0.1                                                                  *
+* Copyright (C) 2009-2012, 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: http://cgogn.unistra.fr/                                           *
+* Contact information: cgogn@unistra.fr                                        *
+*                                                                              *
+*******************************************************************************/
+
+#ifndef TUTO_WALLPAPER_H
+#define TUTO_WALLPAPER_H
+
+#include <iostream>
+
+#include "Utils/Qt/qtQGLV.h"
+
+#include "Topology/generic/parameters.h"
+#include "Topology/map/embeddedMap2.h"
+
+#include "Geometry/vector_gen.h"
+#include "Algo/Geometry/boundingbox.h"
+#include "Algo/Render/GL2/mapRender.h"
+
+#include "Utils/Shaders/shaderSimpleColor.h"
+#include "Utils/vbo.h"
+#include "Utils/cgognStream.h"
+
+
+#include "Utils/Shaders/shaderWallPaper.h"
+
+using namespace CGoGN ;
+
+
+struct PFP: public PFP_STANDARD
+{
+	// definition of the map
+	typedef EmbeddedMap2 MAP ;
+};
+
+typedef PFP::MAP MAP;
+typedef PFP::VEC3 VEC3;
+
+/**
+ * A class for a little interface and rendering
+ */
+class MyQT: public Utils::QT::SimpleQGLV
+{
+    Q_OBJECT
+
+public:
+	MAP myMap ;
+	VertexAttribute<VEC3, MAP> position ;
+
+    Algo::Render::GL2::MapRender* m_render;
+    Utils::VBO* m_positionVBO;
+    Utils::ShaderSimpleColor* m_shader;
+
+	// FOR WALL PAPER
+	Utils::Texture<2,Geom::Vec3uc>* m_textureWP;
+	Utils::ShaderWallPaper* m_shaderWP;
+
+    MyQT():
+        m_render(NULL),
+        m_positionVBO(NULL),
+
+        m_shader(NULL),
+		m_shaderWP(NULL)
+    {}
+
+
+protected:
+
+    void cb_redraw();
+
+	void cb_initGL();
+
+	void cb_keyPress(int keycode);
+
+	void computeTexture();
+};
+
+#endif // TUTO_TILINGS_H

include/Utils/Shaders/shaderWallPaper.frag

+// ShaderWallPaper::fragmentShaderText
+
+PRECISON;
+VARYING_FRAG vec2 texCoord;
+uniform sampler2D textureUnit;
+FRAG_OUT_DEF;
+void main()
+{
+	gl_FragColor=texture2D(textureUnit,texCoord);
+}

include/Utils/Shaders/shaderWallPaper.h

+/*******************************************************************************
+* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
+* version 0.1                                                                  *
+* Copyright (C) 2009-2012, 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: http://cgogn.unistra.fr/                                           *
+* Contact information: cgogn@unistra.fr                                        *
+*                                                                              *
+*******************************************************************************/
+
+#ifndef __CGOGN_SHADER_WALLPAPER__
+#define __CGOGN_SHADER_WALLPAPER__
+
+
+#include "Geometry/vector_gen.h"
+#include "Utils/GLSLShader.h"
+#include "Utils/clippingShader.h"
+#include "Utils/textures.h"
+#include "Utils/gl_def.h"
+
+namespace CGoGN
+{
+
+namespace Utils
+{
+
+class ShaderWallPaper : public ClippingShader
+{
+protected:
+	// shader sources
+	static std::string vertexShaderText;
+	static std::string fragmentShaderText;
+
+	CGoGNGLuint m_unif_unit;
+	int m_unit;
+
+	Utils::GTexture* m_tex_ptr;
+	VBO* m_vboPos;
+	VBO* m_vboTexCoord;
+
+	void restoreUniformsAttribs();
+
+public:
+	ShaderWallPaper();
+
+	~ShaderWallPaper();
+
+	/**
+	 * choose the texture unit engine to use for this texture
+	 */
+	void setTextureUnit(GLenum texture_unit);
+
+	/**
+	 * set the texture to use
+	 */
+	void setTexture(Utils::GTexture* tex);
+
+	/**
+	 * activation of texture unit with set texture
+	 */
+	void activeTexture();
+	
+	/**
+	 * activation of texture unit with texture id
+	 */
+	void activeTexture(CGoGNGLuint texId);
+
+	/**
+	 * @brief draw the quad as wallpaper
+	 */
+	void draw();
+};
+
+} // namespace Utils
+
+} // namespace CGoGN
+
+
+#endif /* __CGOGN_SHADER_SIMPLETEXTURE__ */

include/Utils/Shaders/shaderWallPaper.vert

+// ShaderWallPaper::vertexShaderText
+
+ATTRIBUTE vec3 VertexPosition;
+ATTRIBUTE vec2 VertexTexCoord;
+VARYING_VERT vec2 texCoord;
+INVARIANT_POS;
+void main ()
+{
+	gl_Position = vec4 (VertexPosition, 1.0);
+	texCoord = VertexTexCoord;
+}
+

src/Utils/Shaders/shaderWallPaper.cpp

+/*******************************************************************************
+* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
+* version 0.1                                                                  *
+* Copyright (C) 2009-2012, 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: http://cgogn.unistra.fr/                                           *
+* Contact information: cgogn@unistra.fr                                        *
+*                                                                              *
+*******************************************************************************/
+
+#include <GL/glew.h>
+#include "Utils/Shaders/shaderWallPaper.h"
+
+
+namespace CGoGN
+{
+
+namespace Utils
+{
+#include "shaderWallPaper.vert"
+#include "shaderWallPaper.frag"
+
+
+ShaderWallPaper::ShaderWallPaper():
+	m_tex_ptr(NULL)
+{
+	std::string glxvert(*GLSLShader::DEFINES_GL);
+	glxvert.append(vertexShaderText);
+
+	std::string glxfrag(*GLSLShader::DEFINES_GL);
+	glxfrag.append(fragmentShaderText);
+
+	loadShadersFromMemory(glxvert.c_str(), glxfrag.c_str());
+	
+	m_unif_unit = glGetUniformLocation(this->program_handler(), "textureUnit");
+
+	m_vboPos = new Utils::VBO();
+	m_vboPos->setDataSize(3);
+	m_vboPos->allocate(4);
+	Geom::Vec3f* ptrPos = reinterpret_cast<Geom::Vec3f*>(m_vboPos->lockPtr());
+
+	ptrPos[0] = Geom::Vec3f(-1,-1, 0.9999999);
+	ptrPos[1] = Geom::Vec3f( 1,-1, 0.9999999);
+	ptrPos[2] = Geom::Vec3f( 1, 1, 0.9999999);
+	ptrPos[3] = Geom::Vec3f(-1, 1, 0.9999999);
+
+	m_vboPos->releasePtr();
+
+	bindVA_VBO("VertexPosition", m_vboPos);
+
+	m_vboTexCoord = new Utils::VBO();
+	m_vboTexCoord->setDataSize(2);
+
+	m_vboTexCoord = new Utils::VBO();
+	m_vboTexCoord->setDataSize(2);
+	m_vboTexCoord->allocate(4);
+	Geom::Vec2f* ptrTex = reinterpret_cast<Geom::Vec2f*>(m_vboTexCoord->lockPtr());
+
+	ptrTex[0] = Geom::Vec2f(0.0,0.0);
+	ptrTex[1] = Geom::Vec2f(1.0,0.0);
+	ptrTex[2] = Geom::Vec2f(1.0,1.0);
+	ptrTex[3] = Geom::Vec2f(0.0,1.0);
+
+	m_vboTexCoord->releasePtr();
+
+	bindVA_VBO("VertexTexCoord", m_vboTexCoord);
+}
+
+ShaderWallPaper::~ShaderWallPaper()
+{
+	delete m_vboPos;
+	delete m_vboTexCoord;
+}
+
+void ShaderWallPaper::setTextureUnit(GLenum texture_unit)
+{
+	this->bind();
+	int unit = texture_unit - GL_TEXTURE0;
+	glUniform1iARB(*m_unif_unit,unit);
+	m_unit = unit;
+}
+
+void ShaderWallPaper::setTexture(Utils::GTexture* tex)
+{
+	m_tex_ptr = tex;
+}
+
+void ShaderWallPaper::activeTexture()
+{
+	glActiveTexture(GL_TEXTURE0 + m_unit);
+	m_tex_ptr->bind();
+}
+
+void ShaderWallPaper::activeTexture(CGoGNGLuint texId)
+{
+	glActiveTexture(GL_TEXTURE0 + m_unit);
+	glBindTexture(GL_TEXTURE_2D, *texId);
+}
+
+void ShaderWallPaper::restoreUniformsAttribs()
+{
+	m_unif_unit = glGetUniformLocation(this->program_handler(), "textureUnit");
+
+	bindVA_VBO("VertexPosition", m_vboPos);
+	bindVA_VBO("VertexTexCoord", m_vboTexCoord);
+	
+	this->bind();
+	glUniform1iARB(*m_unif_unit,m_unit);
+	this->unbind();
+}
+
+void ShaderWallPaper::draw()
+{
+	this->activeTexture();
+	this->enableVertexAttribs();
+	glDrawArrays(GL_QUADS, 0, 4);
+	this->disableVertexAttribs();
+}
+
+} // namespace Utils
+
+} // namespace CGoGN