MapHandler::setScaling + double side

Apps/Examples/viewer.cpp

@@ -92,20 +92,20 @@ void Viewer::cb_initGL()
 	m_positionVBO = new Utils::VBO() ;
 	m_normalVBO = new Utils::VBO() ;
 
-	m_phongShader = new Utils::ShaderPhong(true,false,false) ;
+	m_phongShader = new Utils::ShaderPhong(true,false) ;
 	m_phongShader->setAttributePosition(m_positionVBO) ;
 	m_phongShader->setAttributeNormal(m_normalVBO) ;
 	m_phongShader->setAmbiant(colClear) ;
 	m_phongShader->setDiffuse(colDif) ;
 	m_phongShader->setSpecular(colSpec) ;
 	m_phongShader->setShininess(shininess) ;
-	m_phongShader->setBackColor(Geom::Vec4f(0,0,0.2,0)) ;
+	m_phongShader->setBackColor(Geom::Vec4f(0.9f, 0.0f, 0.0f, 0.0f));
 
-	m_flatShader = new Utils::ShaderSimpleFlat(true,false) ;
+	m_flatShader = new Utils::ShaderSimpleFlat() ;
 	m_flatShader->setAttributePosition(m_positionVBO) ;
 	m_flatShader->setAmbiant(colClear) ;
 	m_flatShader->setDiffuse(colDif) ;
-	m_flatShader->setBackColor(Geom::Vec4f(0,0,0.2,0)) ;
+	m_flatShader->setBackColor(Geom::Vec4f(0.9f, 0.0f, 0.0f, 0.0f));
 
 
 	m_vectorShader = new Utils::ShaderVectorPerVertex() ;
@@ -182,7 +182,7 @@ void Viewer::cb_redraw()
 	}
 
 	m_nbFrames++;
-	if (m_nbFrames >=100)
+	if (m_nbFrames >=500)
 	{
 		std::cout << 100000.0/m_frame_ch.elapsed()<< " fps"<<std::endl;
 		m_nbFrames = 0;
@@ -214,6 +214,34 @@ void Viewer::cb_keyPress(int keycode)
 {
 	switch(keycode)
 	{
+	case 'd':
+	{
+		m_phongShader->setDoubleSided(true);
+		m_flatShader->setDoubleSided(true);
+		updateGL();
+	}
+	break;
+	case 'D':
+	{
+		m_phongShader->setDoubleSided(false);
+		m_flatShader->setDoubleSided(false);
+		updateGL();
+	}
+	break;
+
+	case 'q':
+	{
+		Utils::Chrono ch;
+		ch.start();
+
+		for (int i = 0; i < 1000; ++i)
+		{
+			m_render->draw(m_flatShader, Algo::Render::GL2::TRIANGLES);
+			glFlush();
+		}
+
+		std::cout << "speed render " << 1000.0*1000.0/ch.elapsed() << " fps " << std::endl;
+	}
 	case 'n':
 		m_flatShader->setNoClippingPlane();
 		m_phongShader->setNoClippingPlane();

Apps/Examples/viewer.h

@@ -43,6 +43,7 @@
 
 #include "Utils/Shaders/shaderPhong.h"
 #include "Utils/Shaders/shaderSimpleFlat.h"
+//#include "Utils/Shaders/shaderFlat.h"
 #include "Utils/Shaders/shaderSimpleColor.h"
 #include "Utils/Shaders/shaderVectorPerVertex.h"
 #include "Utils/pointSprite.h"

CGoGN/include/Utils/Shaders/shaderFlat.frag

@@ -2,19 +2,20 @@
 uniform vec4 diffuse;
 uniform vec4 diffuseBack;
 uniform vec4 ambient;
+uniform bool doubleSided;
+
 VARYING_FRAG float lambertTerm;
 FRAG_OUT_DEF;
+
 void main()
 {
-#ifdef DOUBLE_SIDED
-	if (gl_FrontFacing)
-		FRAG_OUT = ambient + lambertTerm*diffuse;
-	else
-		FRAG_OUT = ambient - lambertTerm*diffuse;
-#else	
 	if (gl_FrontFacing)
 		FRAG_OUT = ambient + lambertTerm*diffuse;
 	else
+	{
+		if (!doubleSided)
+			discard;
 		FRAG_OUT = ambient - lambertTerm*diffuseBack;
-#endif
+	}
+
 }

CGoGN/include/Utils/Shaders/shaderFlat.geom

@@ -5,6 +5,7 @@ uniform mat4 ModelViewProjectionMatrix;
 uniform mat4 NormalMatrix;
 uniform mat4 ModelViewMatrix;
 uniform vec3 lightPosition;
+
 VARYING_OUT float lambertTerm;
 
 void main(void)

CGoGN/include/Utils/Shaders/shaderFlat.h

@@ -50,8 +50,9 @@ protected:
 	CGoGNGLuint m_unif_diffuseback;
 	CGoGNGLuint m_unif_lightPos;
 	CGoGNGLuint m_unif_explode;
+	CGoGNGLuint m_unif_doubleSided;
 
-	bool m_doubleSided;
+	int m_doubleSided;
 	float m_explode;
 	Geom::Vec4f m_ambiant;
 	Geom::Vec4f m_diffuse;
@@ -75,7 +76,7 @@ public:
 
 	void setDiffuse(const Geom::Vec4f& diffuse);
 
-	void setDiffuseBack(const Geom::Vec4f& diffuseb);
+	void setBackColor(const Geom::Vec4f& diffuseb);
 
 	void setLightPosition(const Geom::Vec3f& lp);
 

CGoGN/include/Utils/Shaders/shaderPhong.frag

@@ -8,30 +8,30 @@ VARYING_FRAG vec3 Color;
 uniform vec4 materialDiffuse;
 uniform vec4 materialSpecular;
 uniform vec4 materialAmbient;
-uniform float shininess;
 uniform vec4 backColor;
+uniform float shininess;
+uniform bool doubleSided;
 
 FRAG_OUT_DEF;
 void main()
 {
 	vec3 N = normalize (Normal);
 	vec3 L = normalize (LightDir);
-	//float lambertTerm = clamp(dot(N,L),0.0,1.0);
-
+	
 	vec4 finalColor = materialAmbient;
-
-#ifdef DOUBLE_SIDED
-	float lambertTerm;
-	vec4 diffuseColor = materialDiffuse;
+	vec4 currentColor = materialDiffuse;
+	
 	if (!gl_FrontFacing)
 	{
+		if (!doubleSided)
+			discard;
 		N *= -1.0;
-		lambertTerm = clamp(dot(N,L),0.0,1.0);
+		currentColor = backColor;
 	}
-	else
-		lambertTerm = clamp(dot(N,L),0.0,1.0);
+		
+	float lambertTerm = clamp(dot(N,L),0.0,1.0);
 #ifndef WITH_COLOR
-	finalColor += materialDiffuse * lambertTerm;
+	finalColor += currentColor * lambertTerm;
 #else
 	finalColor += vec4((Color*lambertTerm),0.0) ;
 #endif
@@ -39,33 +39,5 @@ void main()
 	vec3 R = reflect(-L, N);
 	float specular = pow( max(dot(R, E), 0.0), shininess );
 	finalColor += materialSpecular * specular;
-#else
-	if (gl_FrontFacing)
-	{
-		float lambertTerm = clamp(dot(N,L),0.0,1.0);
-#ifndef WITH_COLOR
-		finalColor += materialDiffuse * lambertTerm;
-#else
-		finalColor += vec4((Color*lambertTerm),0.0) ;
-#endif
-		vec3 E = normalize(EyeVector);
-		vec3 R = reflect(-L, N);
-		float specular = pow( max(dot(R, E), 0.0), shininess );
-		finalColor += materialSpecular * specular;
-	}
-	else
-	{
-		float lambertTerm = clamp(-dot(N,L),0.0,1.0);
-#ifndef WITH_COLOR
-		finalColor += backColor * lambertTerm;
-#else
-		finalColor += vec4((Color*lambertTerm),0.0) ;
-#endif
-		vec3 E = normalize(EyeVector);
-		vec3 R = reflect(-L, N);
-		float specular = pow( max(dot(R, E), 0.0), shininess );
-		finalColor += materialSpecular * specular;
-	}
-#endif
 	FRAG_OUT=finalColor;
 }

CGoGN/include/Utils/Shaders/shaderPhong.h

@@ -46,7 +46,7 @@ protected:
 	bool m_with_color;
 	// flag color per vertex or not
 	bool m_with_eyepos;	
-	bool m_doubleSided;
+	//bool m_doubleSided;
 
 	// shader sources OGL3
 	static std::string vertexShaderText;
@@ -62,6 +62,7 @@ protected:
 	CGoGNGLuint m_unif_lightPos;
 	CGoGNGLuint m_unif_eyePos;
 	CGoGNGLuint m_unif_backColor;
+	CGoGNGLuint m_unif_doubleSided;
 
 	//values
 	Geom::Vec4f m_ambiant;
@@ -71,6 +72,7 @@ protected:
 	Geom::Vec3f m_lightPos;
 	Geom::Vec3f m_eyePos;
 	Geom::Vec4f m_backColor;
+	int m_doubleSided;
 
 	VBO* m_vboPos;
 	VBO* m_vboNormal;
@@ -87,7 +89,7 @@ protected:
 	void restoreUniformsAttribs();
 
 public:
-	ShaderPhong(bool withClipping = false ,bool doubleSided = false, bool withEyePosition=false);
+	ShaderPhong(bool withClipping = false, bool withEyePosition=false);
 
 	void setDoubleSided(bool doubleSided);
 

CGoGN/include/Utils/Shaders/shaderPhongClip.frag

@@ -10,7 +10,7 @@ uniform vec4 materialSpecular;
 uniform vec4 materialAmbient;
 uniform float shininess;
 uniform vec4 backColor;
-
+uniform bool doubleSided;
 uniform vec4 planeClip;
 VARYING_FRAG vec3 posClip;
 
@@ -27,16 +27,14 @@ void main()
 
 	vec4 finalColor = materialAmbient;
 
-#ifdef DOUBLE_SIDED
-	float lambertTerm;
-	vec4 diffuseColor = materialDiffuse;
 	if (!gl_FrontFacing)
 	{
+		if (!doubleSided)
+			discard;
 		N *= -1.0;
-		lambertTerm = clamp(dot(N,L),0.0,1.0);
 	}
-	else
-		lambertTerm = clamp(dot(N,L),0.0,1.0);
+		
+	float lambertTerm = clamp(dot(N,L),0.0,1.0);
 #ifndef WITH_COLOR
 	finalColor += materialDiffuse * lambertTerm;
 #else
@@ -46,24 +44,6 @@ void main()
 	vec3 R = reflect(-L, N);
 	float specular = pow( max(dot(R, E), 0.0), shininess );
 	finalColor += materialSpecular * specular;
-#else
-	float lambertTerm = clamp(dot(N,L),0.0,1.0);
-	if (gl_FrontFacing)
-	{
-#ifndef WITH_COLOR
-		finalColor += materialDiffuse * lambertTerm;
-#else
-		finalColor += vec4((Color*lambertTerm),0.0) ;
-#endif
-		vec3 E = normalize(EyeVector);
-		vec3 R = reflect(-L, N);
-		float specular = pow( max(dot(R, E), 0.0), shininess );
-		finalColor += materialSpecular * specular;
-	}
-	else
-	{
-		finalColor = backColor;
-	}
-#endif
 	FRAG_OUT=finalColor;
+	
 }

CGoGN/include/Utils/Shaders/shaderSimpleFlat.frag

@@ -11,6 +11,7 @@ uniform vec4 materialSpecular;
 uniform vec4 materialAmbient;
 uniform float shininess;
 uniform vec4 backColor;
+uniform bool doubleSided;
 
 FRAG_OUT_DEF;
 
@@ -23,39 +24,21 @@ void main()
 	vec3 L = normalize (LightDir);
 
 	vec4 finalColor = materialAmbient;
+	float lambertTerm = clamp(dot(N,L),0.0,1.0);
+
+	vec4 currentColor = materialDiffuse;
 
-#ifdef DOUBLE_SIDED
-	float lambertTerm;
-	vec4 diffuseColor = materialDiffuse;
 	if (!gl_FrontFacing)
-		lambertTerm = clamp(-dot(N,L),0.0,1.0);
-	else
-		lambertTerm = clamp(dot(N,L),0.0,1.0);
-#ifndef WITH_COLOR
-	finalColor += materialDiffuse * lambertTerm;
-#else
-	finalColor += vec4((Color*lambertTerm),0.0) ;
-#endif
-#else
-	
-	if (gl_FrontFacing)
 	{
-		float lambertTerm = clamp(dot(N,L),0.0,1.0);
-#ifndef WITH_COLOR
-		finalColor += materialDiffuse * lambertTerm;
-#else
-		finalColor += vec4((Color*lambertTerm),0.0) ;
-#endif
+		if (!doubleSided)
+			discard;
+		currentColor = backColor;
 	}
-	else
-	{
-		float lambertTerm = clamp(-dot(N,L),0.0,1.0);
+
 #ifndef WITH_COLOR
-		finalColor += backColor * lambertTerm;
+	finalColor += currentColor * lambertTerm;
 #else
-		finalColor += vec4((Color*lambertTerm),0.0) ;
-#endif
-	}
+	finalColor += vec4((Color*lambertTerm),0.0) ;
 #endif
 	FRAG_OUT=finalColor;
 }

CGoGN/include/Utils/Shaders/shaderSimpleFlat.h

@@ -46,7 +46,6 @@ protected:
 	bool m_with_color;
 	// flag color per vertex or not
 	bool m_with_eyepos;	
-	bool m_doubleSided;
 	// shader sources OGL3
 	static std::string vertexShaderText;
 	static std::string fragmentShaderText;
@@ -58,12 +57,14 @@ protected:
 	CGoGNGLuint m_unif_diffuse;
 	CGoGNGLuint m_unif_lightPos;
 	CGoGNGLuint m_unif_backColor;
+	CGoGNGLuint m_unif_doubleSided;
 
 	//values
 	Geom::Vec4f m_ambiant;
 	Geom::Vec4f m_diffuse;
 	Geom::Vec3f m_lightPos;
 	Geom::Vec4f m_backColor;
+	int m_doubleSided;
 
 	VBO* m_vboPos;
 	VBO* m_vboColor;

CGoGN/include/Utils/Shaders/shaderSimpleFlatClip.frag

@@ -11,6 +11,7 @@ uniform vec4 materialSpecular;
 uniform vec4 materialAmbient;
 uniform float shininess;
 uniform vec4 backColor;
+uniform bool doubleSided;
 
 FRAG_OUT_DEF;
 
@@ -28,37 +29,21 @@ void main()
 
 	vec3 L = normalize (LightDir);
 
+	vec4 finalColor = materialAmbient;
 	vec4 finalColor = materialAmbient;
 
-#ifdef DOUBLE_SIDED
-	float lambertTerm;
-	vec4 diffuseColor = materialDiffuse;
 	if (!gl_FrontFacing)
 	{
+		if (!doubleSided)
+			discard;
 		N *= -1.0;
-		lambertTerm = clamp(dot(N,L),0.0,1.0);
 	}
-	else
-		lambertTerm = clamp(dot(N,L),0.0,1.0);
+		
+	float lambertTerm = clamp(dot(N,L),0.0,1.0);
 #ifndef WITH_COLOR
 	finalColor += materialDiffuse * lambertTerm;
 #else
 	finalColor += vec4((Color*lambertTerm),0.0) ;
-#endif
-#else
-	float lambertTerm = clamp(dot(N,L),0.0,1.0);
-	if (gl_FrontFacing)
-	{
-#ifndef WITH_COLOR
-		finalColor += materialDiffuse * lambertTerm;
-#else
-		finalColor += vec4((Color*lambertTerm),0.0) ;
-#endif
-	}
-	else
-	{
-		finalColor = backColor;
-	}
 #endif
 	FRAG_OUT=finalColor;
 }

CGoGN/src/Utils/Shaders/shaderFlat.cpp

@@ -37,7 +37,7 @@ namespace Utils
 
 
 ShaderFlat::ShaderFlat():
-m_doubleSided(false)
+m_doubleSided(1)
 {
 	m_nameVS = "ShaderFlat_vs";
 	m_nameFS = "ShaderFlat_fs";
@@ -70,27 +70,12 @@ m_doubleSided(false)
 
 void ShaderFlat::setDoubleSided(bool doubleSided)
 {
-	if (doubleSided == m_doubleSided)
-		return;
-
-	std::string glxvert(GLSLShader::defines_gl());
-	glxvert.append(vertexShaderText);
-
-	std::string glxgeom = GLSLShader::defines_Geom("triangles", "triangle_strip", 3);
-	glxgeom.append(geometryShaderText);
-
-	std::string glxfrag(GLSLShader::defines_gl());
-	if (doubleSided)
-		glxfrag.append("#define DOUBLE_SIDED\n");
-	glxfrag.append(fragmentShaderText);
-
-	loadShadersFromMemory(glxvert.c_str(), glxfrag.c_str(), glxgeom.c_str(), GL_TRIANGLES, GL_TRIANGLE_STRIP, 3);
+	m_doubleSided = doubleSided;
 
 	bind();
-	getLocations();
+	glUniform1i(*m_unif_doubleSided, m_doubleSided);
 	unbind();
 
-	setParams(m_explode, m_ambiant, m_diffuse, m_diffuseBack, m_light_pos);
 }
 
 void ShaderFlat::getLocations()
@@ -100,6 +85,7 @@ void ShaderFlat::getLocations()
 	*m_unif_diffuse  = glGetUniformLocation(program_handler(), "diffuse");
 	*m_unif_diffuseback  = glGetUniformLocation(program_handler(), "diffuseBack");
 	*m_unif_lightPos = glGetUniformLocation(program_handler(), "lightPosition");
+	*m_unif_doubleSided = glGetUniformLocation(this->program_handler(), "doubleSided");
 }
 
 unsigned int ShaderFlat::setAttributePosition(VBO* vbo)
@@ -153,7 +139,7 @@ void ShaderFlat::setDiffuse(const Geom::Vec4f& diffuse)
 	unbind();
 }
 
-void ShaderFlat::setDiffuseBack(const Geom::Vec4f& diffuseb)
+void ShaderFlat::setBackColor(const Geom::Vec4f& diffuseb)
 {
 	m_diffuseBack = diffuseb;
 	bind();
@@ -176,6 +162,7 @@ void ShaderFlat::restoreUniformsAttribs()
 	*m_unif_diffuse     = glGetUniformLocation(program_handler(),"diffuse");
 	*m_unif_diffuseback = glGetUniformLocation(program_handler(),"diffuseBack");
 	*m_unif_lightPos    =  glGetUniformLocation(program_handler(),"lightPosition");
+	*m_unif_doubleSided = glGetUniformLocation(this->program_handler(), "doubleSided");
 
 	bind();
 
@@ -184,6 +171,7 @@ void ShaderFlat::restoreUniformsAttribs()
 	glUniform4fv(*m_unif_diffuse,  1, m_diffuse.data());
 	glUniform4fv(*m_unif_diffuseback,  1, m_diffuseBack.data());
 	glUniform3fv(*m_unif_lightPos, 1, m_light_pos.data());
+	glUniform1i(*m_unif_doubleSided, m_doubleSided);
 
 	bindVA_VBO("VertexPosition", m_vboPos);
 

CGoGN/src/Utils/Shaders/shaderPhong.cpp

@@ -37,10 +37,10 @@ namespace Utils
 #include "shaderPhongClip.frag"
 
 
-	ShaderPhong::ShaderPhong(bool withClipping, bool doubleSided, bool withEyePosition) :
+	ShaderPhong::ShaderPhong(bool withClipping, bool withEyePosition) :
 	m_with_color(false),
 	m_with_eyepos(withEyePosition),
-	m_doubleSided(doubleSided),
+	m_doubleSided(1),
 	m_ambiant(Geom::Vec4f(0.05f,0.05f,0.1f,0.0f)),
 	m_diffuse(Geom::Vec4f(0.1f,1.0f,0.1f,0.0f)),
 	m_specular(Geom::Vec4f(1.0f,1.0f,1.0f,0.0f)),
@@ -63,8 +63,8 @@ namespace Utils
 			glxvert.append("#define WITH_EYEPOSITION");
 		glxvert.append(vertexShaderClipText);
 		// Use double sided lighting if set
-		if (doubleSided)
-			glxfrag.append("#define DOUBLE_SIDED\n");
+		//if (doubleSided)
+		//	glxfrag.append("#define DOUBLE_SIDED\n");
 		glxfrag.append(fragmentShaderClipText);
 	}
 	else
@@ -75,8 +75,8 @@ namespace Utils
 			glxvert.append("#define WITH_EYEPOSITION");
 		glxvert.append(vertexShaderText);
 		// Use double sided lighting if set
-		if (doubleSided)
-			glxfrag.append("#define DOUBLE_SIDED\n");
+		//if (doubleSided)
+		//	glxfrag.append("#define DOUBLE_SIDED\n");
 		glxfrag.append(fragmentShaderText);
 	}
 
@@ -88,46 +88,6 @@ namespace Utils
 }
 
 
-void ShaderPhong::setDoubleSided(bool doubleSided)
-{
-	if (doubleSided == m_doubleSided)
-		return;
-
-	m_doubleSided = doubleSided;
-
-	std::string glxvert(GLSLShader::defines_gl());
-	std::string glxfrag(GLSLShader::defines_gl());
-
-	if (m_nameVS == "ShaderPhongClip_vs")
-	{
-		if (m_with_eyepos)
-			glxvert.append("#define WITH_EYEPOSITION");
-		glxvert.append(vertexShaderClipText);
-		// Use double sided lighting if set
-		if (doubleSided)
-			glxfrag.append("#define DOUBLE_SIDED\n");
-		glxfrag.append(fragmentShaderClipText);
-	}
-	else
-	{
-		if (m_with_eyepos)
-			glxvert.append("#define WITH_EYEPOSITION");
-		glxvert.append(vertexShaderText);
-		// Use double sided lighting if set
-		if (doubleSided)
-			glxfrag.append("#define DOUBLE_SIDED\n");
-		glxfrag.append(fragmentShaderText);
-	}
-
-	loadShadersFromMemory(glxvert.c_str(), glxfrag.c_str());
-	// and get and fill uniforms
-	getLocations();
-	sendParams();
-}
-
-
-
-
 void ShaderPhong::getLocations()
 {
 	bind();
@@ -140,6 +100,7 @@ void ShaderPhong::getLocations()
 		*m_unif_eyePos  = glGetUniformLocation(this->program_handler(), "eyePosition");
 	*m_unif_backColor  = glGetUniformLocation(this->program_handler(), "backColor");
 	*m_unif_planeClip = glGetUniformLocation(this->program_handler(), "planeClip");
+	*m_unif_doubleSided = glGetUniformLocation(this->program_handler(), "doubleSided");
 
 	unbind();
 }
@@ -152,6 +113,7 @@ void ShaderPhong::sendParams()
 	glUniform4fv(*m_unif_specular, 1, m_specular.data());
 	glUniform1f(*m_unif_shininess,    m_shininess);
 	glUniform3fv(*m_unif_lightPos, 1, m_lightPos.data());
+	glUniform1i(*m_unif_doubleSided, m_doubleSided);
 	if (m_with_eyepos)
 		glUniform3fv(*m_unif_eyePos, 1, m_eyePos.data());
 	glUniform4fv(*m_unif_backColor,  1, m_backColor.data());
@@ -160,6 +122,16 @@ void ShaderPhong::sendParams()
 	unbind();
 }
 
+void ShaderPhong::setDoubleSided(bool doubleSided)
+{
+	m_doubleSided = doubleSided;
+
+	bind();
+	glUniform1i(*m_unif_doubleSided, m_doubleSided);
+	unbind();
+}
+
+
 void ShaderPhong::setAmbiant(const Geom::Vec4f& ambiant)
 {
 	bind();

CGoGN/src/Utils/Shaders/shaderSimpleFlat.cpp

@@ -57,8 +57,6 @@ ShaderSimpleFlat::ShaderSimpleFlat(bool withClipping, bool doubleSided):
 		m_nameVS = "ShaderSimpleFlatClip_vs";
 		m_nameFS = "ShaderSimpleFlatClip_fs";
 		glxvert.append(vertexShaderClipText);
-		if (doubleSided)
-			glxfrag.append("#define DOUBLE_SIDED\n");
 		glxfrag.append(fragmentShaderClipText);
 	}
 	else
@@ -68,8 +66,6 @@ ShaderSimpleFlat::ShaderSimpleFlat(bool withClipping, bool doubleSided):
 		// get choose GL defines (2 or 3)
 		// ans compile shaders
 		glxvert.append(vertexShaderText);
-		if (doubleSided)
-			glxfrag.append("#define DOUBLE_SIDED\n");
 		glxfrag.append(fragmentShaderText);
 	}
 
@@ -81,31 +77,11 @@ ShaderSimpleFlat::ShaderSimpleFlat(bool withClipping, bool doubleSided):
 
 void ShaderSimpleFlat::setDoubleSided(bool doubleSided)
 {
-	if (doubleSided == m_doubleSided)
-		return;
+	m_doubleSided = doubleSided;
 
-	std::string glxvert(GLSLShader::defines_gl());
-	std::string glxfrag(GLSLShader::defines_gl());
-
-	if (m_nameVS == "ShaderSimpleFlatClip_vs")
-	{
-		glxvert.append(vertexShaderClipText);
-		if (doubleSided)
-			glxfrag.append("#define DOUBLE_SIDED\n");
-		glxfrag.append(fragmentShaderClipText);
-	}
-	else
-	{
-		glxvert.append(vertexShaderText);
-		if (doubleSided)
-			glxfrag.append("#define DOUBLE_SIDED\n");
-		glxfrag.append(fragmentShaderText);
-	}
-
-	loadShadersFromMemory(glxvert.c_str(), glxfrag.c_str());
-	// and get and fill uniforms
-	getLocations();
-	sendParams();
+	bind();
+	glUniform1i(*m_unif_doubleSided, m_doubleSided);
+	unbind();
 }
 
 
@@ -117,6 +93,7 @@ void ShaderSimpleFlat::getLocations()
 	*m_unif_lightPos  = glGetUniformLocation(this->program_handler(), "lightPosition");
 	*m_unif_backColor  = glGetUniformLocation(this->program_handler(), "backColor");
 	*m_unif_planeClip = glGetUniformLocation(this->program_handler(), "planeClip");
+	*m_unif_doubleSided = glGetUniformLocation(this->program_handler(), "doubleSided");
 	unbind();
 }