WebSVN – gelsvn – Diff – /trunk/src/GLGraphics/ManifoldRenderer.cpp


/* ----------------------------------------------------------------------- *
 * This file is part of GEL, http://www.imm.dtu.dk/GEL
 * Copyright (C) the authors and DTU Informatics
 * For license and list of authors, see ../../doc/intro.pdf
 * ----------------------------------------------------------------------- */
 
#include "ManifoldRenderer.h"
 
#include <algorithm>
#include <string>
#include <cstdlib>
#include "../CGLA/Mat3x3d.h"
#include "../GLGraphics/glsl_shader.h"
#include "../HMesh/Manifold.h"
#include "../HMesh/AttributeVector.h"
#include "../HMesh/curvature.h"
 
using namespace CGLA;
using namespace HMesh;
using namespace std;
 
namespace GLGraphics
{
    
    GLuint get_noise_texture_id()
    {
        static GLuint texname=0;
        static bool was_here = false;
        
        if(!was_here)
        {
            was_here = true;
            int width = 32;
            int height = 32;
            int depth = 32;
            vector<unsigned char> texels(width*height*depth);
            for (int i = 0; i < width*height*depth; ++i)
            {
                int intensity = 255.0 * (float(gel_rand()) / GEL_RAND_MAX);
                texels[i] = (unsigned char) intensity;
            }
            
            glGenTextures(1, &texname);	
            glBindTexture(GL_TEXTURE_3D, texname);	
            glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
            glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
            glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_REPEAT);
            glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_REPEAT);
            glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_REPEAT);
            glTexImage3D(GL_TEXTURE_3D, 0, GL_INTENSITY8, width, height, depth, 0, GL_RED, GL_UNSIGNED_BYTE, &texels[0]);
        }
        
        return texname;
    }
    
    
    int WireframeRenderer::maximum_face_valency(const Manifold& m)
    {
        int max_val = 0;
        for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f)
            max_val = max(max_val, no_edges(m, *f));
        return max_val;
    }
    
    WireframeRenderer::WireframeRenderer(HMesh::Manifold& m, bool smooth): idbuff_renderer(0)
    {
        if(GLEW_EXT_geometry_shader4 && maximum_face_valency(m) > 3)
        {
            GLint viewp[4];
            glGetIntegerv(GL_VIEWPORT,viewp);
            idbuff_renderer = new IDBufferWireframeRenderer(viewp[2], viewp[3], m);
        }
        else
        {
            glNewList(display_list,GL_COMPILE);
            if(GLEW_EXT_geometry_shader4)
                draw_triangles_in_wireframe(m,smooth, Vec3f(1,0,0));				
            else
                draw_wireframe_oldfashioned(m,smooth, Vec3f(1,0,0));
            glEndList();
        }
    }
    
    void WireframeRenderer::draw()
    {
        if(idbuff_renderer)
        {
            glEnable(GL_LIGHTING);
            idbuff_renderer->draw(Vec3f(1,0,0),Vec3f(1));
            glDisable(GL_LIGHTING);
        }
        else
            glCallList(display_list);
    }
    
    void SimpleShaderRenderer::init_shaders(const std::string& vss, 
                                            const std::string& fss)
    {
        vs = create_glsl_shader(GL_VERTEX_SHADER, vss);
        print_glsl_program_log(vs);
        
        fs = create_glsl_shader(GL_FRAGMENT_SHADER, fss);
        print_glsl_program_log(fs);
        
        prog = glCreateProgram();
        
        if(vs) glAttachShader(prog, vs);
        if(fs) glAttachShader(prog, fs);
        
        glLinkProgram(prog);
        print_glsl_program_log(prog);
        
    }
    
    void SimpleShaderRenderer::compile_display_list(const Manifold& m, bool smooth)
    {
        glNewList(display_list,GL_COMPILE);
        GLGraphics::draw(m, smooth);
        glEndList();	
    }
    
    void SimpleShaderRenderer::draw()
    {
        GLint old_prog;
        glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);
        glUseProgram(prog);
        glCallList(display_list);
        glUseProgram(old_prog);
    }
    
    const string NormalRenderer::vss = 
    "varying vec3 _n;\n"
    "varying vec3 v;\n"
    "\n"
    "void main(void)\n"
    "{\n"
    "	gl_Position = ftransform();\n"
    "	v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"
    "	_n = normalize(gl_NormalMatrix * gl_Normal);\n"
    "}\n";
    
    const string NormalRenderer::fss = 
    "varying vec3 _n;\n"
    "varying vec3 v;\n"
    "\n"
    "void main(void)\n"
    "{\n"
    "   vec3 n = normalize(_n);\n"
    "	vec3 l = normalize(-v);\n"
    "	vec3 e = l;\n"
    "	vec3 r = normalize(2.0*dot(l, n)*n - l);\n"
    "	\n"
    "	vec4 a = vec4(0.0,0.1,.3,1.0);\n"
    "   float dot_ln = abs(dot(l, n));\n"
    "	vec4 d = vec4(0.7) * dot_ln;\n"
    "	vec4 s = vec4(0.3)*smoothstep(0.98,0.9999,dot(r, e));\n"
    "	\n"
    "	gl_FragColor =  d+s;\n"
    "}\n";
    
    
    const string ReflectionLineRenderer::vss = 
    "varying vec3 _n;\n"
    "varying vec3 v;\n"
    "\n"
    "void main(void)\n"
    "{\n"
    "	gl_Position = ftransform();\n"
    "	v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"
    "	_n = normalize(gl_NormalMatrix * gl_Normal);\n"
    "}\n";
    
    
    const string ReflectionLineRenderer::fss = 
    "uniform float detail;\n"
    "\n"
    "varying vec3 _n;\n"
    "varying vec3 v;\n"
    "\n"
    "void main(void)\n"
    "{\n"
    "   vec3 n = normalize(_n);\n"
    "	// calculate the reflection\n"
    "	vec3 r = normalize(2.0*dot(-v, n)*n + v);\n"
    "	vec3 viewer_lightdir = vec3(0, 0, 1.0);\n"
    "   float diff  = dot(n,viewer_lightdir);\n"
    "	\n"
    "	vec2 r2 = normalize(vec2(r[0], r[2]));\n"
    "	vec2 x = vec2(1, 0);\n"
    "	float angle = acos(dot(r2, x));\n"
    "	\n"
    "	// decide if we hit a white or black ring, based on y value\n"
    "	gl_FragColor = diff * vec4(1.0) + smoothstep(0.8, 1.0,cos(13.0*angle)) * vec4(-1.0);\n"
    "}\n";
    
    const string IsophoteLineRenderer::vss = 
    "varying vec3 _n;\n"
    "varying vec3 v;\n"
    "\n"
    "void main(void)\n"
    "{\n"
    "	gl_Position = ftransform();\n"
    "	v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"
    "	_n = normalize(gl_NormalMatrix * gl_Normal);\n"
    "}\n";
    
    
    const string IsophoteLineRenderer::fss = 
    "uniform float detail;\n"
    "\n"
    "varying vec3 _n;\n"
    "varying vec3 v;\n"
    "\n"
    "void main(void)\n"
    "{\n"
    "   vec3 n = normalize(_n);\n"
    "	vec3 viewer_lightdir = vec3(0, 0, 1.0);\n"
    "	vec3 isophote_lightdir = viewer_lightdir;\n"
    "	float angle = acos(dot(n, isophote_lightdir));\n"
    "   float diff  = dot(n,viewer_lightdir);\n"
    "	\n"
    "	// decide if we hit a white or black ring, based on y value\n"
    "	gl_FragColor = diff * vec4(1.0) + smoothstep(0.8, 1.0,cos(20.0*angle)) * vec4(-1.0);\n"
    "}\n";
    
    const string ToonRenderer::vss = 
    "varying vec3 _n;\n"
    "varying vec3 v;\n"
    "\n"
    "void main(void)\n"
    "{\n"
    "	gl_Position = ftransform();\n"
    "	v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"
    "	_n = normalize(gl_NormalMatrix * gl_Normal);\n"
    "}\n";
    
    const string ToonRenderer::fss = 
    "varying vec3 _n;\n"
    "varying vec3 v;\n"
    "\n"
    "void main(void)\n"
    "{\n"
    "   vec3 n = normalize(_n);\n"
    "	vec3 l = normalize(-v);\n"
    "	vec3 e = l;\n"
    "	vec3 r = normalize(2.0*dot(l, n)*n - l);\n"
    "	\n"
    "	vec4 a = vec4(0.0,0.1,.3,1.0);\n"
    "   float dot_ln = abs(dot(l, n));\n"
    "	vec4 d = vec4(0.7,0.7,0.0,1.0) * 0.25 * (smoothstep(0.23,0.25,dot_ln)+smoothstep(0.45,0.47,dot_ln)+smoothstep(0.7,0.72,dot_ln)+smoothstep(0.9,0.92,dot_ln));\n"
    "	vec4 s = vec4(0.5,0.3,0.4,1.0)*smoothstep(0.96,0.98,dot(r, e));\n"
    "	\n"
    "	gl_FragColor =  d+s;\n"
    "}\n";
    
    
    void GlazedRenderer::draw()
    {
        GLint old_prog;
        glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);
        glUseProgram(prog);
        glBindTexture(GL_TEXTURE_3D, get_noise_texture_id());
        glUniform1iARB(glGetUniformLocationARB(prog, "noise_tex"),0);
        glUniform1fARB(glGetUniformLocationARB(prog, "noise_scale"),12.0/bsphere_rad);
        glCallList(display_list);
        glUseProgram(old_prog);
    }
    
    
    
    const string GlazedRenderer::vss = 
    "varying vec3 _n;\n"
    "varying vec3 v;\n"
    "varying vec3 v_obj;\n"
    "\n"
    "void main(void)\n"
    "{\n"
    "	gl_Position = ftransform();\n"
    "   v_obj = gl_Vertex.xyz;\n"
    "	v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"
    "	_n = normalize(gl_NormalMatrix * gl_Normal);\n"
    "}\n"
    "\n";
    
    const string GlazedRenderer::fss =
    "uniform sampler3D noise_tex;\n"
    "uniform float noise_scale;\n"
    "varying vec3 _n;\n"
    "varying vec3 v;\n"
    "varying vec3 v_obj;\n"
    "\n"
    "vec4 glazed_shader(vec4 mat_col,  vec4 light_col, vec3 light_dir)\n"
    "{\n"
    "   vec3 n = normalize(_n);\n"
    "	vec3 e = normalize(-v);\n"
    "	vec3 r = normalize(2.0*dot(e, n)*n - e);\n"
    "	float d = max(0.05,dot(light_dir, n));\n"
    "	vec4 diff = mat_col * light_col *d; 	\n"
    "	vec4 refl = smoothstep(0.7,0.75,dot(r,light_dir)) * light_col;\n"
    "	return 0.15*refl + diff;\n"
    "}\n"
    "\n"
    "void main(void)\n"
    "{\n"
    "	vec4 mat_col = vec4(0.9,1.0,0.4,1.0) + vec4(-0.1,-0.1,0.12,0.0) * texture3D(noise_tex, noise_scale*v_obj).x\n"
    " + vec4(0.05) * texture3D(noise_tex, 500.0*v_obj).x;\n"
    "	\n"
    "	vec3 light0_dir = vec3(0.0,1.0,0.0);\n"
    "	vec4 light0_col = vec4(0.7,0.9,1.0,1.0);\n"
    "	\n"
    "	vec3 light1_dir = vec3(0.0,0.0,1.0);\n"
    "	vec4 light1_col = vec4(1.0,1.0,0.7,1.0);\n"
    "	\n"
    "	gl_FragColor = \n"
    "	0.5*glazed_shader(mat_col, light0_col, light0_dir)+\n"
    "	0.5*glazed_shader(mat_col, light1_col, light1_dir);\n"
    "	\n"
    "	gl_FragColor.a = 1.0;\n"
    "}\n";
    
    
    const string ScalarFieldRenderer::vss =
    "	attribute float scalar;\n"
    "	varying vec3 _normal;\n"
    "	varying float s;\n"
    "	\n"
    "	void main(void)\n"
    "	{\n"
    "		gl_Position =  ftransform();\n"
    "		_normal = normalize(gl_NormalMatrix * gl_Normal);\n"
    "		s=scalar;\n"
    "	}\n";
    
    const string ScalarFieldRenderer::fss = 	
    "	varying vec3 _normal;\n"
    "	varying float s;\n"
    "	uniform float scalar_max;\n"
    "   uniform float gamma;\n"
    "	const vec3 light_dir = vec3(0,0,1);\n"
    "	\n"
    "	void main()\n"
    "	{\n"
    "       vec3 normal = normalize(_normal);\n"
    "		float dot_ln = max(0.0,dot(light_dir, normal));\n"
    "		\n"
    "		float s_norm = s/scalar_max;\n"
    "		float stripe_signal = 100.0 * s_norm;\n"
    "		vec4 stripe_col = abs(stripe_signal) < 3.14 ? vec4(0,0,0,0) : vec4(.1,.1,.1,0);\n"
    "		\n"
    "		gl_FragColor = s_norm * vec4(-1,0,1,0);\n"
    "       gl_FragColor *= dot_ln;\n"
    "       gl_FragColor.r = pow(gl_FragColor.r, 1.0/gamma);\n"
    "       gl_FragColor.g = pow(gl_FragColor.g, 1.0/gamma);\n"
    "       gl_FragColor.b = pow(gl_FragColor.b, 1.0/gamma);\n"
    "		gl_FragColor += stripe_col * smoothstep(0.8,1.0,cos(stripe_signal));\n"
    "	}\n";
    
    ScalarFieldRenderer::ScalarFieldRenderer(const Manifold& m, 
                                             bool smooth, 
                                             VertexAttributeVector<double>& field, 
                                             double max_val, float gamma): SimpleShaderRenderer(vss, fss)
    {
        
        GLint old_prog;
        glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);
        glUseProgram(prog);
        
        GLuint scalar_attrib = glGetAttribLocation(prog, "scalar");
        glUniform1fARB(glGetUniformLocationARB(prog, "scalar_max"), max_val);
        
        //    static float& gamma = CreateCVar("display.scalar_field_renderer.gamma",2.2f);
        glUniform1fARB(glGetUniformLocationARB(prog, "gamma"), gamma);
        glNewList(display_list,GL_COMPILE);
        
        for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f){      
            if(!smooth) 
                glNormal3dv(normal(m, *f).get());
            if(no_edges(m, *f)== 3) 
                glBegin(GL_TRIANGLES);
            else 
                glBegin(GL_POLYGON);
            
            
            for(Walker w = m.walker(*f); !w.full_circle(); w = w.circulate_face_ccw()){
                Vec3d n(normal(m, w.vertex()));
                if(smooth) 
                    glNormal3dv(n.get());
                glVertexAttrib1d(scalar_attrib, field[w.vertex()]);
                glVertex3dv(m.pos(w.vertex()).get());
            }
            glEnd();
        }
        glEndList();	
        glUseProgram(old_prog);
        
    }
 
    const string PeriodicScalarFieldRenderer::vss =
    "	attribute float scalar;\n"
    "	varying vec3 _normal;\n"
    "	varying float s;\n"
    "	\n"
    "	void main(void)\n"
    "	{\n"
    "		gl_Position =  ftransform();\n"
    "		_normal = normalize(gl_NormalMatrix * gl_Normal);\n"
    "		s=scalar;\n"
    "	}\n";
    
    const string PeriodicScalarFieldRenderer::fss = 	
    "	varying vec3 _normal;\n"
    "	varying float s;\n"
    "   uniform float gamma;\n"
    "	const vec3 light_dir = vec3(0,0,1);\n"
    "	\n"
    "	void main()\n"
    "	{\n"
    "       vec3 normal = normalize(_normal);\n"
    "		float dot_ln = max(0.0,dot(light_dir, normal));\n"
    "		\n"
    "		gl_FragColor = sin(s) * vec4(-1,0,1,0);\n"
    "       gl_FragColor *= dot_ln;\n"
    "       gl_FragColor.r = pow(gl_FragColor.r, 1.0/gamma);\n"
    "       gl_FragColor.g = pow(gl_FragColor.g, 1.0/gamma);\n"
    "       gl_FragColor.b = pow(gl_FragColor.b, 1.0/gamma);\n"
    "	}\n";
    
    PeriodicScalarFieldRenderer::PeriodicScalarFieldRenderer(const Manifold& m, 
                                             bool smooth, 
                                             VertexAttributeVector<double>& field, 
                                             float gamma): SimpleShaderRenderer(vss, fss)
    {
        
        GLint old_prog;
        glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);
        glUseProgram(prog);
        
        GLuint scalar_attrib = glGetAttribLocation(prog, "scalar");
        
        //    static float& gamma = CreateCVar("display.scalar_field_renderer.gamma",2.2f);
        glUniform1fARB(glGetUniformLocationARB(prog, "gamma"), gamma);
        glNewList(display_list,GL_COMPILE);
        
        for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f){      
            if(!smooth) 
                glNormal3dv(normal(m, *f).get());
            if(no_edges(m, *f)== 3) 
                glBegin(GL_TRIANGLES);
            else 
                glBegin(GL_POLYGON);
            
            
            for(Walker w = m.walker(*f); !w.full_circle(); w = w.circulate_face_ccw()){
                Vec3d n(normal(m, w.vertex()));
                if(smooth) 
                    glNormal3dv(n.get());
                glVertexAttrib1d(scalar_attrib, field[w.vertex()]);
                glVertex3dv(m.pos(w.vertex()).get());
            }
            glEnd();
        }
        glEndList();	
        glUseProgram(old_prog);
        
    }
 
    const string AmbientOcclusionRenderer::vss =
    "	attribute float scalar;\n"
    "	varying vec3 _normal;\n"
    "	varying float s;\n"
    "	\n"
    "	void main(void)\n"
    "	{\n"
    "		gl_Position =  ftransform();\n"
    "		_normal = normalize(gl_NormalMatrix * gl_Normal);\n"
    "		s=scalar;\n"
    "	}\n";
    
    const string AmbientOcclusionRenderer::fss = 	
    "	varying vec3 _normal;\n"
    "	varying float s;\n"
    "	uniform float scalar_max;\n"
    "	const vec3 light_dir = vec3(0,0,1);\n"
    "	\n"
    "	void main()\n"
    "	{\n"
    "   vec3 normal = normalize(_normal);\n"
    "		float dot_ln = max(0.0,dot(light_dir, normal));\n"
    "		\n"
    "		float s_norm = min(1.0,s/scalar_max+1.0);\n"
    "		\n"
    "		gl_FragColor = s_norm * vec4(1.0);\n"
    "       gl_FragColor *= dot_ln;\n"
    "       gl_FragColor.r = pow(gl_FragColor.r, 1.0);\n"
    "       gl_FragColor.g = pow(gl_FragColor.g, 1.0);\n"
    "       gl_FragColor.b = pow(gl_FragColor.b, 1.0);\n"
    "	}\n";
    
    AmbientOcclusionRenderer::AmbientOcclusionRenderer(const Manifold& m, bool smooth, VertexAttributeVector<double>& field, double max_val):
    SimpleShaderRenderer(vss,fss)
    {	
        GLint old_prog;
        glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);
        glUseProgram(prog);
        
        GLuint scalar_attrib = glGetAttribLocation(prog, "scalar");
        glUniform1fARB(glGetUniformLocationARB(prog, "scalar_max"), max_val);
        
        glNewList(display_list,GL_COMPILE);
        
        for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f){
            
            if(!smooth) 
                glNormal3dv(normal(m, *f).get());
            if(no_edges(m, *f)== 3) 
                glBegin(GL_TRIANGLES);
            else 
                glBegin(GL_POLYGON);
            
            for(Walker w = m.walker(*f); !w.full_circle(); w = w.circulate_face_ccw())
            {
                Vec3d n(normal(m, w.vertex()));
                if(smooth) 
                    glNormal3dv(n.get());
                glVertexAttrib1d(scalar_attrib, field[w.vertex()]);
                glVertex3dv(m.pos(w.vertex()).get());
            }
            glEnd();
        }
        glEndList();	
        glUseProgram(old_prog);
        
    }
    
    
    LineFieldRenderer::LineFieldRenderer(const Manifold& m, bool smooth, VertexAttributeVector<Vec3d>& lines, float _r): 
    SimpleShaderRenderer(vss,fss), r(_r)
    {
        float noise_scale = 30.0f/r;
        float line_scale = 0.05f/r;
        float noise_amplitude = 0.1f;
        
        GLint old_prog;
        glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);
        glUseProgram(prog);	
        glUniform1fARB(glGetUniformLocationARB(prog, "scale_line"),line_scale);
        glUniform1fARB(glGetUniformLocationARB(prog, "noise_scale"),noise_scale);
        glUniform1fARB(glGetUniformLocationARB(prog, "noise_amplitude"),noise_amplitude);	
        glUniform1iARB(glGetUniformLocationARB(prog, "noise_tex"),0);
        GLuint direction = glGetAttribLocation(prog, "direction");	
        glNewList(display_list,GL_COMPILE);
        for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f){
            if(!smooth) 
                glNormal3dv(normal(m, *f).get());
            if(no_edges(m, *f) == 3) 
                glBegin(GL_TRIANGLES);
            else 
                glBegin(GL_POLYGON);
            
            for(Walker w = m.walker(*f); !w.full_circle(); w = w.circulate_face_ccw()){
                Vec3d n(normal(m, w.vertex()));
                if(smooth) 
                    glNormal3dv(n.get());
                
                Vec3d d = lines[w.vertex()];
                d = normalize(d-n*dot(n,d));
                glVertexAttrib3dv(direction, d.get());
                glVertex3dv(m.pos(w.vertex()).get());
            }
            glEnd();
        }
        
        glBindTexture(GL_TEXTURE_3D, 0);
        glEndList();	
        glUseProgram(old_prog);
        
    }
    
    void LineFieldRenderer::draw()
    {
        GLint old_prog;
        glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);
        glUseProgram(prog);
        glBindTexture(GL_TEXTURE_3D, get_noise_texture_id());
        glCallList(display_list);
        glBindTexture(GL_TEXTURE_3D, 0);
        glUseProgram(old_prog);	
    }
    
    const string LineFieldRenderer::vss = 
    "attribute vec3 direction;\n"
    "varying vec3 _n;\n"
    "varying vec3 dir_obj;\n"
    "varying vec3 v_obj;\n"
    "\n"
    "void main(void)\n"
    "{\n"
    "	gl_Position = ftransform();\n"
    "   v_obj = gl_Vertex.xyz;\n"
    "	dir_obj = direction;\n"
    "	_n = normalize(gl_NormalMatrix * gl_Normal);\n"
    "}\n";
    
    const string LineFieldRenderer::fss =
    "uniform sampler3D noise_tex;\n"
    "uniform float scale_line;\n"
    "uniform float noise_amplitude;\n"
    "uniform float noise_scale;\n"
    "varying vec3 _n;\n"
    "varying vec3 dir_obj;\n"
    "varying vec3 v_obj;\n"
    "\n"
    "float tex(vec3 p) {return smoothstep(0.2,0.3,texture3D(noise_tex, p).x);}\n"
    "void main(void)\n"
    "{\n"
    "   vec3 n = normalize(_n);\n"
    "   float I = "
    "             tex(noise_scale*v_obj + 6.0*scale_line*dir_obj) + \n"
    "             tex(noise_scale*v_obj - 6.0*scale_line*dir_obj) + \n"
    "             tex(noise_scale*v_obj + 5.0*scale_line*dir_obj) + \n"
    "             tex(noise_scale*v_obj - 5.0*scale_line*dir_obj) + \n"
    "             tex(noise_scale*v_obj + 4.0*scale_line*dir_obj) + \n"
    "             tex(noise_scale*v_obj - 4.0*scale_line*dir_obj) + \n"
    "             tex(noise_scale*v_obj + 3.0*scale_line*dir_obj) + \n"
    "             tex(noise_scale*v_obj - 3.0*scale_line*dir_obj) + \n"
    "             tex(noise_scale*v_obj + 2.0*scale_line*dir_obj) + \n"
    "             tex(noise_scale*v_obj - 2.0*scale_line*dir_obj) + \n"
    "             tex(noise_scale*v_obj + 1.0*scale_line*dir_obj) + \n"
    "             tex(noise_scale*v_obj - 1.0*scale_line*dir_obj) + \n"
    "			  tex(noise_scale*v_obj); \n"
    "	\n"
    "   float diff = max(0.0,dot(n,vec3(0.0, 0.0, 1.0)));\n"
    "	gl_FragColor.rgb = vec3(diff*I*(1.0/13.0));\n"
    "	gl_FragColor.a = 1.0;\n"
    "}\n";
    
    const string DualVertexRenderer::vss = 
    "#version 120\n"
    "#extension GL_EXT_gpu_shader4 : enable\n"
    "varying vec4 diffuseIn;\n"
    "varying vec3 _normalIn;\n"
    "void main(void)\n"
    "{\n"
    "   diffuseIn = gl_Color;\n"
    "   _normalIn = normalize(gl_NormalMatrix*gl_Normal);\n"
    "   gl_Position =  ftransform();\n"
    "}\n";
    
    const string DualVertexRenderer::gss = 
    "#version 120\n"
    "#extension GL_EXT_gpu_shader4 : enable\n"
    "#extension GL_EXT_geometry_shader4 : enable\n"
    "\n"
    "varying in vec4 diffuseIn[3];\n"
    "varying in vec3 _normalIn[3];\n"
    "varying vec4 diffuse[3];\n"
    "varying float f;\n"
    "varying vec3 _normal;\n"
    "void main(void)\n"
    "{\n"
    "  diffuse[0] = diffuseIn[0];\n"
    "  diffuse[1] = diffuseIn[1];\n"
    "  diffuse[2] = diffuseIn[2];\n"
    "\n"
    "  f = diffuseIn[0].a;\n"
    "  gl_Position = gl_PositionIn[0];\n"
    "  _normal = _normalIn[0];\n"
    "  EmitVertex();\n"
    "	\n"
    "  f = diffuseIn[1].a;\n"
    "  gl_Position = gl_PositionIn[1];\n"
    "  _normal = _normalIn[1];\n"
    "  EmitVertex();\n"
    "\n"
    "  f = diffuseIn[2].a;\n"
    "  gl_Position = gl_PositionIn[2];\n"
    "  _normal = _normalIn[2];\n"
    "  EmitVertex();\n"
    "\n"
    "  EndPrimitive();\n"
    "}\n";
    
    const string DualVertexRenderer::fss =
    "#version 120\n"
    "#extension GL_EXT_gpu_shader4 : enable\n"
    "\n"
    "varying float f;\n"
    "varying vec4 diffuse[3];\n"
    "varying vec3 _normal;\n"
    "\n"
    "void main(void)\n"
    "{\n"
    "   vec3 normal = normalize(_normal);\n"
    "   float col_idx=0;\n"
    "   if(f>diffuse[0].g && f<diffuse[0].b)\n"
    "      col_idx = diffuse[0].r;\n"
    "   else if(f>diffuse[1].g && f<diffuse[1].b)\n"
    "      col_idx = diffuse[1].r;\n"
    "   else if(f>diffuse[2].g && f<diffuse[2].b)\n"
    "      col_idx = diffuse[2].r;\n"
    "   vec4 col = col_idx < .5 ? vec4(1,0,0,0) : vec4(0,0,1,0);\n"
    "\n"
    " 	gl_FragColor =col*dot(normal, vec3(0,0,1));\n"
    "}\n";
    
    
    
    
    DualVertexRenderer::DualVertexRenderer(const HMesh::Manifold& m, VertexAttributeVector<Vec4d>& field)
    {		
        // Create the program
        static GLuint prog = glCreateProgram();
        
        static bool was_here = false;
        if(!was_here)
        {
            was_here = true;
            // Create s	haders directly from file
            static GLuint vs = create_glsl_shader(GL_VERTEX_SHADER, vss);
            static GLuint gs = create_glsl_shader(GL_GEOMETRY_SHADER_EXT, gss);
            static GLuint fs = create_glsl_shader(GL_FRAGMENT_SHADER, fss);
            
            // Attach all shaders
            if(vs) glAttachShader(prog, vs);
            if(gs) glAttachShader(prog, gs);
            if(fs) glAttachShader(prog, fs);
            
            // Specify input and output for the geometry shader. Note that this must be
            // done before linking the program.
            glProgramParameteriEXT(prog,GL_GEOMETRY_INPUT_TYPE_EXT,GL_TRIANGLES);
            glProgramParameteriEXT(prog,GL_GEOMETRY_VERTICES_OUT_EXT,3);
            glProgramParameteriEXT(prog,GL_GEOMETRY_OUTPUT_TYPE_EXT,GL_TRIANGLE_STRIP);
            
            // Link the program object and print out the info log
            glLinkProgram(prog);
        }
        
        
        
        GLint old_prog;
        glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);
        
        glNewList(display_list,GL_COMPILE);
        glUseProgram(prog);
        for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f){
            if(no_edges(m, *f) != 3) 
                continue;
            else 
                glBegin(GL_TRIANGLES);
            
            for(Walker w = m.walker(*f); !w.full_circle(); w = w.circulate_face_ccw()){
                Vec3d n(normal(m, w.vertex()));
                glNormal3dv(n.get());
                glColor4dv(field[w.vertex()].get());
                glVertex3dv(m.pos(w.vertex()).get());
            }
            glEnd();
        }
        glUseProgram(old_prog);
        glEndList();	
        
    }
    
}
 
 
 

Rev 601	Rev 607
1	`/* ----------------------------------------------------------------------- *`	1	`/* ----------------------------------------------------------------------- *`
2	`* This file is part of GEL, http://www.imm.dtu.dk/GEL`	2	`* This file is part of GEL, http://www.imm.dtu.dk/GEL`
3	`* Copyright (C) the authors and DTU Informatics`	3	`* Copyright (C) the authors and DTU Informatics`
4	`* For license and list of authors, see ../../doc/intro.pdf`	4	`* For license and list of authors, see ../../doc/intro.pdf`
5	`* ----------------------------------------------------------------------- */`	5	`* ----------------------------------------------------------------------- */`
6		6
7	`#include "ManifoldRenderer.h"`	7	`#include "ManifoldRenderer.h"`
8		8
9	`#include <algorithm>`	9	`#include <algorithm>`
10	`#include <string>`	10	`#include <string>`
11	`#include <cstdlib>`	11	`#include <cstdlib>`
12	`#include "../CGLA/Mat3x3d.h"`	12	`#include "../CGLA/Mat3x3d.h"`
13	`#include "../GLGraphics/glsl_shader.h"`	13	`#include "../GLGraphics/glsl_shader.h"`
14	`#include "../HMesh/Manifold.h"`	14	`#include "../HMesh/Manifold.h"`
15	`#include "../HMesh/AttributeVector.h"`	15	`#include "../HMesh/AttributeVector.h"`
16	`#include "../HMesh/curvature.h"`	16	`#include "../HMesh/curvature.h"`
17		17
18	`using namespace CGLA;`	18	`using namespace CGLA;`
19	`using namespace HMesh;`	19	`using namespace HMesh;`
20	`using namespace std;`	20	`using namespace std;`
21		21
22	`namespace GLGraphics`	22	`namespace GLGraphics`
23	`{`	23	`{`
24		24
25	`GLuint get_noise_texture_id()`	25	`GLuint get_noise_texture_id()`
26	`{`	26	`{`
27	`static GLuint texname=0;`	27	`static GLuint texname=0;`
28	`static bool was_here = false;`	28	`static bool was_here = false;`
29		29
30	`if(!was_here)`	30	`if(!was_here)`
31	`{`	31	`{`
32	`was_here = true;`	32	`was_here = true;`
33	`int width = 32;`	33	`int width = 32;`
34	`int height = 32;`	34	`int height = 32;`
35	`int depth = 32;`	35	`int depth = 32;`
36	`vector<unsigned char> texels(widthheightdepth);`	36	`vector<unsigned char> texels(widthheightdepth);`
37	`for (int i = 0; i < widthheightdepth; ++i)`	37	`for (int i = 0; i < widthheightdepth; ++i)`
38	`{`	38	`{`
39	`int intensity = 255.0 * (float(gel_rand()) / GEL_RAND_MAX);`	39	`int intensity = 255.0 * (float(gel_rand()) / GEL_RAND_MAX);`
40	`texels[i] = (unsigned char) intensity;`	40	`texels[i] = (unsigned char) intensity;`
41	`}`	41	`}`
42		42
43	`glGenTextures(1, &texname);`	43	`glGenTextures(1, &texname);`
44	`glBindTexture(GL_TEXTURE_3D, texname);`	44	`glBindTexture(GL_TEXTURE_3D, texname);`
45	`glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);`	45	`glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);`
46	`glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);`	46	`glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);`
47	`glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_REPEAT);`	47	`glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_REPEAT);`
48	`glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_REPEAT);`	48	`glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_REPEAT);`
49	`glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_REPEAT);`	49	`glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_REPEAT);`
50	`glTexImage3D(GL_TEXTURE_3D, 0, GL_INTENSITY8, width, height, depth, 0, GL_RED, GL_UNSIGNED_BYTE, &texels[0]);`	50	`glTexImage3D(GL_TEXTURE_3D, 0, GL_INTENSITY8, width, height, depth, 0, GL_RED, GL_UNSIGNED_BYTE, &texels[0]);`
51	`}`	51	`}`
52		52
53	`return texname;`	53	`return texname;`
54	`}`	54	`}`
55		55
56		56
57	`int WireframeRenderer::maximum_face_valency(const Manifold& m)`	57	`int WireframeRenderer::maximum_face_valency(const Manifold& m)`
58	`{`	58	`{`
59	`int max_val = 0;`	59	`int max_val = 0;`
60	`for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f)`	60	`for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f)`
61	`max_val = max(max_val, no_edges(m, *f));`	61	`max_val = max(max_val, no_edges(m, *f));`
62	`return max_val;`	62	`return max_val;`
63	`}`	63	`}`
64		64
65	`WireframeRenderer::WireframeRenderer(HMesh::Manifold& m, bool smooth): idbuff_renderer(0)`	65	`WireframeRenderer::WireframeRenderer(HMesh::Manifold& m, bool smooth): idbuff_renderer(0)`
66	`{`	66	`{`
67	`if(GLEW_EXT_geometry_shader4 && maximum_face_valency(m) > 3)`	67	`if(GLEW_EXT_geometry_shader4 && maximum_face_valency(m) > 3)`
68	`{`	68	`{`
69	`GLint viewp[4];`	69	`GLint viewp[4];`
70	`glGetIntegerv(GL_VIEWPORT,viewp);`	70	`glGetIntegerv(GL_VIEWPORT,viewp);`
71	`idbuff_renderer = new IDBufferWireframeRenderer(viewp[2], viewp[3], m);`	71	`idbuff_renderer = new IDBufferWireframeRenderer(viewp[2], viewp[3], m);`
72	`}`	72	`}`
73	`else`	73	`else`
74	`{`	74	`{`
75	`glNewList(display_list,GL_COMPILE);`	75	`glNewList(display_list,GL_COMPILE);`
76	`if(GLEW_EXT_geometry_shader4)`	76	`if(GLEW_EXT_geometry_shader4)`
77	`draw_triangles_in_wireframe(m,smooth, Vec3f(1,0,0));`	77	`draw_triangles_in_wireframe(m,smooth, Vec3f(1,0,0));`
78	`else`	78	`else`
79	`draw_wireframe_oldfashioned(m,smooth, Vec3f(1,0,0));`	79	`draw_wireframe_oldfashioned(m,smooth, Vec3f(1,0,0));`
80	`glEndList();`	80	`glEndList();`
81	`}`	81	`}`
82	`}`	82	`}`
83		83
84	`void WireframeRenderer::draw()`	84	`void WireframeRenderer::draw()`
85	`{`	85	`{`
86	`if(idbuff_renderer)`	86	`if(idbuff_renderer)`
87	`{`	87	`{`
88	`glEnable(GL_LIGHTING);`	88	`glEnable(GL_LIGHTING);`
89	`idbuff_renderer->draw(Vec3f(1,0,0),Vec3f(1));`	89	`idbuff_renderer->draw(Vec3f(1,0,0),Vec3f(1));`
90	`glDisable(GL_LIGHTING);`	90	`glDisable(GL_LIGHTING);`
91	`}`	91	`}`
92	`else`	92	`else`
93	`glCallList(display_list);`	93	`glCallList(display_list);`
94	`}`	94	`}`
95		95
96	`void SimpleShaderRenderer::init_shaders(const std::string& vss,`	96	`void SimpleShaderRenderer::init_shaders(const std::string& vss,`
97	`const std::string& fss)`	97	`const std::string& fss)`
98	`{`	98	`{`
99	`vs = create_glsl_shader(GL_VERTEX_SHADER, vss);`	99	`vs = create_glsl_shader(GL_VERTEX_SHADER, vss);`
100	`print_glsl_program_log(vs);`	100	`print_glsl_program_log(vs);`
101		101
102	`fs = create_glsl_shader(GL_FRAGMENT_SHADER, fss);`	102	`fs = create_glsl_shader(GL_FRAGMENT_SHADER, fss);`
103	`print_glsl_program_log(fs);`	103	`print_glsl_program_log(fs);`
104		104
105	`prog = glCreateProgram();`	105	`prog = glCreateProgram();`
106		106
107	`if(vs) glAttachShader(prog, vs);`	107	`if(vs) glAttachShader(prog, vs);`
108	`if(fs) glAttachShader(prog, fs);`	108	`if(fs) glAttachShader(prog, fs);`
109		109
110	`glLinkProgram(prog);`	110	`glLinkProgram(prog);`
111	`print_glsl_program_log(prog);`	111	`print_glsl_program_log(prog);`
112		112
113	`}`	113	`}`
114		114
115	`void SimpleShaderRenderer::compile_display_list(const Manifold& m, bool smooth)`	115	`void SimpleShaderRenderer::compile_display_list(const Manifold& m, bool smooth)`
116	`{`	116	`{`
117	`glNewList(display_list,GL_COMPILE);`	117	`glNewList(display_list,GL_COMPILE);`
118	`GLGraphics::draw(m, smooth);`	118	`GLGraphics::draw(m, smooth);`
119	`glEndList();`	119	`glEndList();`
120	`}`	120	`}`
121		121
122	`void SimpleShaderRenderer::draw()`	122	`void SimpleShaderRenderer::draw()`
123	`{`	123	`{`
124	`GLint old_prog;`	124	`GLint old_prog;`
125	`glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);`	125	`glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);`
126	`glUseProgram(prog);`	126	`glUseProgram(prog);`
127	`glCallList(display_list);`	127	`glCallList(display_list);`
128	`glUseProgram(old_prog);`	128	`glUseProgram(old_prog);`
129	`}`	129	`}`
130		130
131	`const string NormalRenderer::vss =`	131	`const string NormalRenderer::vss =`
132	`"varying vec3 _n;\n"`	132	`"varying vec3 _n;\n"`
133	`"varying vec3 v;\n"`	133	`"varying vec3 v;\n"`
134	`"\n"`	134	`"\n"`
135	`"void main(void)\n"`	135	`"void main(void)\n"`
136	`"{\n"`	136	`"{\n"`
137	`" gl_Position = ftransform();\n"`	137	`" gl_Position = ftransform();\n"`
138	`" v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"`	138	`" v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"`
139	`" _n = normalize(gl_NormalMatrix * gl_Normal);\n"`	139	`" _n = normalize(gl_NormalMatrix * gl_Normal);\n"`
140	`"}\n";`	140	`"}\n";`
141		141
142	`const string NormalRenderer::fss =`	142	`const string NormalRenderer::fss =`
143	`"varying vec3 _n;\n"`	143	`"varying vec3 _n;\n"`
144	`"varying vec3 v;\n"`	144	`"varying vec3 v;\n"`
145	`"\n"`	145	`"\n"`
146	`"void main(void)\n"`	146	`"void main(void)\n"`
147	`"{\n"`	147	`"{\n"`
148	`" vec3 n = normalize(_n);\n"`	148	`" vec3 n = normalize(_n);\n"`
149	`" vec3 l = normalize(-v);\n"`	149	`" vec3 l = normalize(-v);\n"`
150	`" vec3 e = l;\n"`	150	`" vec3 e = l;\n"`
151	`" vec3 r = normalize(2.0dot(l, n)n - l);\n"`	151	`" vec3 r = normalize(2.0dot(l, n)n - l);\n"`
152	`" \n"`	152	`" \n"`
153	`" vec4 a = vec4(0.0,0.1,.3,1.0);\n"`	153	`" vec4 a = vec4(0.0,0.1,.3,1.0);\n"`
154	`" float dot_ln = abs(dot(l, n));\n"`	154	`" float dot_ln = abs(dot(l, n));\n"`
155	`" vec4 d = vec4(0.7) * dot_ln;\n"`	155	`" vec4 d = vec4(0.7) * dot_ln;\n"`
156	`" vec4 s = vec4(0.3)*smoothstep(0.98,0.9999,dot(r, e));\n"`	156	`" vec4 s = vec4(0.3)*smoothstep(0.98,0.9999,dot(r, e));\n"`
157	`" \n"`	157	`" \n"`
158	`" gl_FragColor = d+s;\n"`	158	`" gl_FragColor = d+s;\n"`
159	`"}\n";`	159	`"}\n";`
160		160
161		161
162	`const string ReflectionLineRenderer::vss =`	162	`const string ReflectionLineRenderer::vss =`
163	`"varying vec3 _n;\n"`	163	`"varying vec3 _n;\n"`
164	`"varying vec3 v;\n"`	164	`"varying vec3 v;\n"`
165	`"\n"`	165	`"\n"`
166	`"void main(void)\n"`	166	`"void main(void)\n"`
167	`"{\n"`	167	`"{\n"`
168	`" gl_Position = ftransform();\n"`	168	`" gl_Position = ftransform();\n"`
169	`" v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"`	169	`" v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"`
170	`" _n = normalize(gl_NormalMatrix * gl_Normal);\n"`	170	`" _n = normalize(gl_NormalMatrix * gl_Normal);\n"`
171	`"}\n";`	171	`"}\n";`
172		172
173		173
174	`const string ReflectionLineRenderer::fss =`	174	`const string ReflectionLineRenderer::fss =`
175	`"uniform float detail;\n"`	175	`"uniform float detail;\n"`
176	`"\n"`	176	`"\n"`
177	`"varying vec3 _n;\n"`	177	`"varying vec3 _n;\n"`
178	`"varying vec3 v;\n"`	178	`"varying vec3 v;\n"`
179	`"\n"`	179	`"\n"`
180	`"void main(void)\n"`	180	`"void main(void)\n"`
181	`"{\n"`	181	`"{\n"`
182	`" vec3 n = normalize(_n);\n"`	182	`" vec3 n = normalize(_n);\n"`
183	`" // calculate the reflection\n"`	183	`" // calculate the reflection\n"`
184	`" vec3 r = normalize(2.0dot(-v, n)n + v);\n"`	184	`" vec3 r = normalize(2.0dot(-v, n)n + v);\n"`
185	`" vec3 viewer_lightdir = vec3(0, 0, 1.0);\n"`	185	`" vec3 viewer_lightdir = vec3(0, 0, 1.0);\n"`
186	`" float diff = dot(n,viewer_lightdir);\n"`	186	`" float diff = dot(n,viewer_lightdir);\n"`
187	`" \n"`	187	`" \n"`
188	`" vec2 r2 = normalize(vec2(r[0], r[2]));\n"`	188	`" vec2 r2 = normalize(vec2(r[0], r[2]));\n"`
189	`" vec2 x = vec2(1, 0);\n"`	189	`" vec2 x = vec2(1, 0);\n"`
190	`" float angle = acos(dot(r2, x));\n"`	190	`" float angle = acos(dot(r2, x));\n"`
191	`" \n"`	191	`" \n"`
192	`" // decide if we hit a white or black ring, based on y value\n"`	192	`" // decide if we hit a white or black ring, based on y value\n"`
193	`" gl_FragColor = diff * vec4(1.0) + smoothstep(0.8, 1.0,cos(13.0angle)) vec4(-1.0);\n"`	193	`" gl_FragColor = diff * vec4(1.0) + smoothstep(0.8, 1.0,cos(13.0angle)) vec4(-1.0);\n"`
194	`"}\n";`	194	`"}\n";`
195		195
196	`const string IsophoteLineRenderer::vss =`	196	`const string IsophoteLineRenderer::vss =`
197	`"varying vec3 _n;\n"`	197	`"varying vec3 _n;\n"`
198	`"varying vec3 v;\n"`	198	`"varying vec3 v;\n"`
199	`"\n"`	199	`"\n"`
200	`"void main(void)\n"`	200	`"void main(void)\n"`
201	`"{\n"`	201	`"{\n"`
202	`" gl_Position = ftransform();\n"`	202	`" gl_Position = ftransform();\n"`
203	`" v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"`	203	`" v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"`
204	`" _n = normalize(gl_NormalMatrix * gl_Normal);\n"`	204	`" _n = normalize(gl_NormalMatrix * gl_Normal);\n"`
205	`"}\n";`	205	`"}\n";`
206		206
207		207
208	`const string IsophoteLineRenderer::fss =`	208	`const string IsophoteLineRenderer::fss =`
209	`"uniform float detail;\n"`	209	`"uniform float detail;\n"`
210	`"\n"`	210	`"\n"`
211	`"varying vec3 _n;\n"`	211	`"varying vec3 _n;\n"`
212	`"varying vec3 v;\n"`	212	`"varying vec3 v;\n"`
213	`"\n"`	213	`"\n"`
214	`"void main(void)\n"`	214	`"void main(void)\n"`
215	`"{\n"`	215	`"{\n"`
216	`" vec3 n = normalize(_n);\n"`	216	`" vec3 n = normalize(_n);\n"`
217	`" vec3 viewer_lightdir = vec3(0, 0, 1.0);\n"`	217	`" vec3 viewer_lightdir = vec3(0, 0, 1.0);\n"`
218	`" vec3 isophote_lightdir = viewer_lightdir;\n"`	218	`" vec3 isophote_lightdir = viewer_lightdir;\n"`
219	`" float angle = acos(dot(n, isophote_lightdir));\n"`	219	`" float angle = acos(dot(n, isophote_lightdir));\n"`
220	`" float diff = dot(n,viewer_lightdir);\n"`	220	`" float diff = dot(n,viewer_lightdir);\n"`
221	`" \n"`	221	`" \n"`
222	`" // decide if we hit a white or black ring, based on y value\n"`	222	`" // decide if we hit a white or black ring, based on y value\n"`
223	`" gl_FragColor = diff * vec4(1.0) + smoothstep(0.8, 1.0,cos(20.0angle)) vec4(-1.0);\n"`	223	`" gl_FragColor = diff * vec4(1.0) + smoothstep(0.8, 1.0,cos(20.0angle)) vec4(-1.0);\n"`
224	`"}\n";`	224	`"}\n";`
225		225
226	`const string ToonRenderer::vss =`	226	`const string ToonRenderer::vss =`
227	`"varying vec3 _n;\n"`	227	`"varying vec3 _n;\n"`
228	`"varying vec3 v;\n"`	228	`"varying vec3 v;\n"`
229	`"\n"`	229	`"\n"`
230	`"void main(void)\n"`	230	`"void main(void)\n"`
231	`"{\n"`	231	`"{\n"`
232	`" gl_Position = ftransform();\n"`	232	`" gl_Position = ftransform();\n"`
233	`" v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"`	233	`" v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"`
234	`" _n = normalize(gl_NormalMatrix * gl_Normal);\n"`	234	`" _n = normalize(gl_NormalMatrix * gl_Normal);\n"`
235	`"}\n";`	235	`"}\n";`
236		236
237	`const string ToonRenderer::fss =`	237	`const string ToonRenderer::fss =`
238	`"varying vec3 _n;\n"`	238	`"varying vec3 _n;\n"`
239	`"varying vec3 v;\n"`	239	`"varying vec3 v;\n"`
240	`"\n"`	240	`"\n"`
241	`"void main(void)\n"`	241	`"void main(void)\n"`
242	`"{\n"`	242	`"{\n"`
243	`" vec3 n = normalize(_n);\n"`	243	`" vec3 n = normalize(_n);\n"`
244	`" vec3 l = normalize(-v);\n"`	244	`" vec3 l = normalize(-v);\n"`
245	`" vec3 e = l;\n"`	245	`" vec3 e = l;\n"`
246	`" vec3 r = normalize(2.0dot(l, n)n - l);\n"`	246	`" vec3 r = normalize(2.0dot(l, n)n - l);\n"`
247	`" \n"`	247	`" \n"`
248	`" vec4 a = vec4(0.0,0.1,.3,1.0);\n"`	248	`" vec4 a = vec4(0.0,0.1,.3,1.0);\n"`
249	`" float dot_ln = abs(dot(l, n));\n"`	249	`" float dot_ln = abs(dot(l, n));\n"`
250	`" vec4 d = vec4(0.7,0.7,0.0,1.0) * 0.25 * (smoothstep(0.23,0.25,dot_ln)+smoothstep(0.45,0.47,dot_ln)+smoothstep(0.7,0.72,dot_ln)+smoothstep(0.9,0.92,dot_ln));\n"`	250	`" vec4 d = vec4(0.7,0.7,0.0,1.0) * 0.25 * (smoothstep(0.23,0.25,dot_ln)+smoothstep(0.45,0.47,dot_ln)+smoothstep(0.7,0.72,dot_ln)+smoothstep(0.9,0.92,dot_ln));\n"`
251	`" vec4 s = vec4(0.5,0.3,0.4,1.0)*smoothstep(0.96,0.98,dot(r, e));\n"`	251	`" vec4 s = vec4(0.5,0.3,0.4,1.0)*smoothstep(0.96,0.98,dot(r, e));\n"`
252	`" \n"`	252	`" \n"`
253	`" gl_FragColor = d+s;\n"`	253	`" gl_FragColor = d+s;\n"`
254	`"}\n";`	254	`"}\n";`
255		255
256		256
257	`void GlazedRenderer::draw()`	257	`void GlazedRenderer::draw()`
258	`{`	258	`{`
259	`GLint old_prog;`	259	`GLint old_prog;`
260	`glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);`	260	`glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);`
261	`glUseProgram(prog);`	261	`glUseProgram(prog);`
262	`glBindTexture(GL_TEXTURE_3D, get_noise_texture_id());`	262	`glBindTexture(GL_TEXTURE_3D, get_noise_texture_id());`
263	`glUniform1iARB(glGetUniformLocationARB(prog, "noise_tex"),0);`	263	`glUniform1iARB(glGetUniformLocationARB(prog, "noise_tex"),0);`
264	`glUniform1fARB(glGetUniformLocationARB(prog, "noise_scale"),12.0/bsphere_rad);`	264	`glUniform1fARB(glGetUniformLocationARB(prog, "noise_scale"),12.0/bsphere_rad);`
265	`glCallList(display_list);`	265	`glCallList(display_list);`
266	`glUseProgram(old_prog);`	266	`glUseProgram(old_prog);`
267	`}`	267	`}`
268		268
269		269
270		270
271	`const string GlazedRenderer::vss =`	271	`const string GlazedRenderer::vss =`
272	`"varying vec3 _n;\n"`	272	`"varying vec3 _n;\n"`
273	`"varying vec3 v;\n"`	273	`"varying vec3 v;\n"`
274	`"varying vec3 v_obj;\n"`	274	`"varying vec3 v_obj;\n"`
275	`"\n"`	275	`"\n"`
276	`"void main(void)\n"`	276	`"void main(void)\n"`
277	`"{\n"`	277	`"{\n"`
278	`" gl_Position = ftransform();\n"`	278	`" gl_Position = ftransform();\n"`
279	`" v_obj = gl_Vertex.xyz;\n"`	279	`" v_obj = gl_Vertex.xyz;\n"`
280	`" v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"`	280	`" v = vec3(gl_ModelViewMatrix * gl_Vertex);\n"`
281	`" _n = normalize(gl_NormalMatrix * gl_Normal);\n"`	281	`" _n = normalize(gl_NormalMatrix * gl_Normal);\n"`
282	`"}\n"`	282	`"}\n"`
283	`"\n";`	283	`"\n";`
284		284
285	`const string GlazedRenderer::fss =`	285	`const string GlazedRenderer::fss =`
286	`"uniform sampler3D noise_tex;\n"`	286	`"uniform sampler3D noise_tex;\n"`
287	`"uniform float noise_scale;\n"`	287	`"uniform float noise_scale;\n"`
288	`"varying vec3 _n;\n"`	288	`"varying vec3 _n;\n"`
289	`"varying vec3 v;\n"`	289	`"varying vec3 v;\n"`
290	`"varying vec3 v_obj;\n"`	290	`"varying vec3 v_obj;\n"`
291	`"\n"`	291	`"\n"`
292	`"vec4 glazed_shader(vec4 mat_col, vec4 light_col, vec3 light_dir)\n"`	292	`"vec4 glazed_shader(vec4 mat_col, vec4 light_col, vec3 light_dir)\n"`
293	`"{\n"`	293	`"{\n"`
294	`" vec3 n = normalize(_n);\n"`	294	`" vec3 n = normalize(_n);\n"`
295	`" vec3 e = normalize(-v);\n"`	295	`" vec3 e = normalize(-v);\n"`
296	`" vec3 r = normalize(2.0dot(e, n)n - e);\n"`	296	`" vec3 r = normalize(2.0dot(e, n)n - e);\n"`
297	`" float d = max(0.05,dot(light_dir, n));\n"`	297	`" float d = max(0.05,dot(light_dir, n));\n"`
298	`" vec4 diff = mat_col * light_col *d; \n"`	298	`" vec4 diff = mat_col * light_col *d; \n"`
299	`" vec4 refl = smoothstep(0.7,0.75,dot(r,light_dir)) * light_col;\n"`	299	`" vec4 refl = smoothstep(0.7,0.75,dot(r,light_dir)) * light_col;\n"`
300	`" return 0.15*refl + diff;\n"`	300	`" return 0.15*refl + diff;\n"`
301	`"}\n"`	301	`"}\n"`
302	`"\n"`	302	`"\n"`
303	`"void main(void)\n"`	303	`"void main(void)\n"`
304	`"{\n"`	304	`"{\n"`
305	`" vec4 mat_col = vec4(0.9,1.0,0.4,1.0) + vec4(-0.1,-0.1,0.12,0.0) * texture3D(noise_tex, noise_scale*v_obj).x\n"`	305	`" vec4 mat_col = vec4(0.9,1.0,0.4,1.0) + vec4(-0.1,-0.1,0.12,0.0) * texture3D(noise_tex, noise_scale*v_obj).x\n"`
306	`" + vec4(0.05) * texture3D(noise_tex, 500.0*v_obj).x;\n"`	306	`" + vec4(0.05) * texture3D(noise_tex, 500.0*v_obj).x;\n"`
307	`" \n"`	307	`" \n"`
308	`" vec3 light0_dir = vec3(0.0,1.0,0.0);\n"`	308	`" vec3 light0_dir = vec3(0.0,1.0,0.0);\n"`
309	`" vec4 light0_col = vec4(0.7,0.9,1.0,1.0);\n"`	309	`" vec4 light0_col = vec4(0.7,0.9,1.0,1.0);\n"`
310	`" \n"`	310	`" \n"`
311	`" vec3 light1_dir = vec3(0.0,0.0,1.0);\n"`	311	`" vec3 light1_dir = vec3(0.0,0.0,1.0);\n"`
312	`" vec4 light1_col = vec4(1.0,1.0,0.7,1.0);\n"`	312	`" vec4 light1_col = vec4(1.0,1.0,0.7,1.0);\n"`
313	`" \n"`	313	`" \n"`
314	`" gl_FragColor = \n"`	314	`" gl_FragColor = \n"`
315	`" 0.5*glazed_shader(mat_col, light0_col, light0_dir)+\n"`	315	`" 0.5*glazed_shader(mat_col, light0_col, light0_dir)+\n"`
316	`" 0.5*glazed_shader(mat_col, light1_col, light1_dir);\n"`	316	`" 0.5*glazed_shader(mat_col, light1_col, light1_dir);\n"`
317	`" \n"`	317	`" \n"`
318	`" gl_FragColor.a = 1.0;\n"`	318	`" gl_FragColor.a = 1.0;\n"`
319	`"}\n";`	319	`"}\n";`
320		320
321		321
322	`const string ScalarFieldRenderer::vss =`	322	`const string ScalarFieldRenderer::vss =`
323	`" attribute float scalar;\n"`	323	`" attribute float scalar;\n"`
324	`" varying vec3 _normal;\n"`	324	`" varying vec3 _normal;\n"`
325	`" varying float s;\n"`	325	`" varying float s;\n"`
326	`" \n"`	326	`" \n"`
327	`" void main(void)\n"`	327	`" void main(void)\n"`
328	`" {\n"`	328	`" {\n"`
329	`" gl_Position = ftransform();\n"`	329	`" gl_Position = ftransform();\n"`
330	`" _normal = normalize(gl_NormalMatrix * gl_Normal);\n"`	330	`" _normal = normalize(gl_NormalMatrix * gl_Normal);\n"`
331	`" s=scalar;\n"`	331	`" s=scalar;\n"`
332	`" }\n";`	332	`" }\n";`
333		333
334	`const string ScalarFieldRenderer::fss =`	334	`const string ScalarFieldRenderer::fss =`
335	`" varying vec3 _normal;\n"`	335	`" varying vec3 _normal;\n"`
336	`" varying float s;\n"`	336	`" varying float s;\n"`
337	`" uniform float scalar_max;\n"`	337	`" uniform float scalar_max;\n"`
338	`" uniform float gamma;\n"`	338	`" uniform float gamma;\n"`
339	`" const vec3 light_dir = vec3(0,0,1);\n"`	339	`" const vec3 light_dir = vec3(0,0,1);\n"`
340	`" \n"`	340	`" \n"`
341	`" void main()\n"`	341	`" void main()\n"`
342	`" {\n"`	342	`" {\n"`
343	`" vec3 normal = normalize(_normal);\n"`	343	`" vec3 normal = normalize(_normal);\n"`
344	`" float dot_ln = max(0.0,dot(light_dir, normal));\n"`	344	`" float dot_ln = max(0.0,dot(light_dir, normal));\n"`
345	`" \n"`	345	`" \n"`
346	`" float s_norm = s/scalar_max;\n"`	346	`" float s_norm = s/scalar_max;\n"`
347	`" float stripe_signal = 100.0 * s_norm;\n"`	347	`" float stripe_signal = 100.0 * s_norm;\n"`
348	`" vec4 stripe_col = abs(stripe_signal) < 3.14 ? vec4(0,0,0,0) : vec4(.1,.1,.1,0);\n"`	348	`" vec4 stripe_col = abs(stripe_signal) < 3.14 ? vec4(0,0,0,0) : vec4(.1,.1,.1,0);\n"`
349	`" \n"`	349	`" \n"`
350	`" gl_FragColor = s_norm * vec4(-1,0,1,0);\n"`	350	`" gl_FragColor = s_norm * vec4(-1,0,1,0);\n"`
351	`" gl_FragColor *= dot_ln;\n"`	351	`" gl_FragColor *= dot_ln;\n"`
352	`" gl_FragColor.r = pow(gl_FragColor.r, 1.0/gamma);\n"`	352	`" gl_FragColor.r = pow(gl_FragColor.r, 1.0/gamma);\n"`
353	`" gl_FragColor.g = pow(gl_FragColor.g, 1.0/gamma);\n"`	353	`" gl_FragColor.g = pow(gl_FragColor.g, 1.0/gamma);\n"`
354	`" gl_FragColor.b = pow(gl_FragColor.b, 1.0/gamma);\n"`	354	`" gl_FragColor.b = pow(gl_FragColor.b, 1.0/gamma);\n"`
355	`" gl_FragColor += stripe_col * smoothstep(0.8,1.0,cos(stripe_signal));\n"`	355	`" gl_FragColor += stripe_col * smoothstep(0.8,1.0,cos(stripe_signal));\n"`
356	`" }\n";`	356	`" }\n";`
357		357
358	`ScalarFieldRenderer::ScalarFieldRenderer(const Manifold& m,`	358	`ScalarFieldRenderer::ScalarFieldRenderer(const Manifold& m,`
359	`bool smooth,`	359	`bool smooth,`
360	`VertexAttributeVector<double>& field,`	360	`VertexAttributeVector<double>& field,`
361	`double max_val, float gamma): SimpleShaderRenderer(vss, fss)`	361	`double max_val, float gamma): SimpleShaderRenderer(vss, fss)`
362	`{`	362	`{`
363		363
364	`GLint old_prog;`	364	`GLint old_prog;`
365	`glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);`	365	`glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);`
366	`glUseProgram(prog);`	366	`glUseProgram(prog);`
367		367
368	`GLuint scalar_attrib = glGetAttribLocation(prog, "scalar");`	368	`GLuint scalar_attrib = glGetAttribLocation(prog, "scalar");`
369	`glUniform1fARB(glGetUniformLocationARB(prog, "scalar_max"), max_val);`	369	`glUniform1fARB(glGetUniformLocationARB(prog, "scalar_max"), max_val);`
370		370
371	`// static float& gamma = CreateCVar("display.scalar_field_renderer.gamma",2.2f);`	371	`// static float& gamma = CreateCVar("display.scalar_field_renderer.gamma",2.2f);`
372	`glUniform1fARB(glGetUniformLocationARB(prog, "gamma"), gamma);`	372	`glUniform1fARB(glGetUniformLocationARB(prog, "gamma"), gamma);`
373	`glNewList(display_list,GL_COMPILE);`	373	`glNewList(display_list,GL_COMPILE);`
374		374
375	`for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f){`	375	`for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f){`
376	`if(!smooth)`	376	`if(!smooth)`
377	`glNormal3dv(normal(m, *f).get());`	377	`glNormal3dv(normal(m, *f).get());`
378	`if(no_edges(m, *f)== 3)`	378	`if(no_edges(m, *f)== 3)`
379	`glBegin(GL_TRIANGLES);`	379	`glBegin(GL_TRIANGLES);`
380	`else`	380	`else`
381	`glBegin(GL_POLYGON);`	381	`glBegin(GL_POLYGON);`
382		382
383		383
384	`for(Walker w = m.walker(*f); !w.full_circle(); w = w.circulate_face_ccw()){`	384	`for(Walker w = m.walker(*f); !w.full_circle(); w = w.circulate_face_ccw()){`
385	`Vec3d n(normal(m, w.vertex()));`	385	`Vec3d n(normal(m, w.vertex()));`
386	`if(smooth)`	386	`if(smooth)`
387	`glNormal3dv(n.get());`	387	`glNormal3dv(n.get());`
388	`glVertexAttrib1d(scalar_attrib, field[w.vertex()]);`	388	`glVertexAttrib1d(scalar_attrib, field[w.vertex()]);`
389	`glVertex3dv(m.pos(w.vertex()).get());`	389	`glVertex3dv(m.pos(w.vertex()).get());`
390	`}`	390	`}`
391	`glEnd();`	391	`glEnd();`
392	`}`	392	`}`
393	`glEndList();`	393	`glEndList();`
394	`glUseProgram(old_prog);`	394	`glUseProgram(old_prog);`
395		395
396	`}`	396	`}`
397		397
398	`const string PeriodicScalarFieldRenderer::vss =`	398	`const string PeriodicScalarFieldRenderer::vss =`
399	`" attribute float scalar;\n"`	399	`" attribute float scalar;\n"`
400	`" varying vec3 _normal;\n"`	400	`" varying vec3 _normal;\n"`
401	`" varying float s;\n"`	401	`" varying float s;\n"`
402	`" \n"`	402	`" \n"`
403	`" void main(void)\n"`	403	`" void main(void)\n"`
404	`" {\n"`	404	`" {\n"`
405	`" gl_Position = ftransform();\n"`	405	`" gl_Position = ftransform();\n"`
406	`" _normal = normalize(gl_NormalMatrix * gl_Normal);\n"`	406	`" _normal = normalize(gl_NormalMatrix * gl_Normal);\n"`
407	`" s=scalar;\n"`	407	`" s=scalar;\n"`
408	`" }\n";`	408	`" }\n";`
409		409
410	`const string PeriodicScalarFieldRenderer::fss =`	410	`const string PeriodicScalarFieldRenderer::fss =`
411	`" varying vec3 _normal;\n"`	411	`" varying vec3 _normal;\n"`
412	`" varying float s;\n"`	412	`" varying float s;\n"`
413	`" uniform float gamma;\n"`	413	`" uniform float gamma;\n"`
414	`" const vec3 light_dir = vec3(0,0,1);\n"`	414	`" const vec3 light_dir = vec3(0,0,1);\n"`
415	`" \n"`	415	`" \n"`
416	`" void main()\n"`	416	`" void main()\n"`
417	`" {\n"`	417	`" {\n"`
418	`" vec3 normal = normalize(_normal);\n"`	418	`" vec3 normal = normalize(_normal);\n"`
419	`" float dot_ln = max(0.0,dot(light_dir, normal));\n"`	419	`" float dot_ln = max(0.0,dot(light_dir, normal));\n"`
420	`" \n"`	420	`" \n"`
421	`" gl_FragColor = sin(s) * vec4(-1,0,1,0);\n"`	421	`" gl_FragColor = sin(s) * vec4(-1,0,1,0);\n"`
422	`" gl_FragColor *= dot_ln;\n"`	422	`" gl_FragColor *= dot_ln;\n"`
423	`" gl_FragColor.r = pow(gl_FragColor.r, 1.0/gamma);\n"`	423	`" gl_FragColor.r = pow(gl_FragColor.r, 1.0/gamma);\n"`
424	`" gl_FragColor.g = pow(gl_FragColor.g, 1.0/gamma);\n"`	424	`" gl_FragColor.g = pow(gl_FragColor.g, 1.0/gamma);\n"`
425	`" gl_FragColor.b = pow(gl_FragColor.b, 1.0/gamma);\n"`	425	`" gl_FragColor.b = pow(gl_FragColor.b, 1.0/gamma);\n"`
426	`" }\n";`	426	`" }\n";`
427		427
428	`PeriodicScalarFieldRenderer::PeriodicScalarFieldRenderer(const Manifold& m,`	428	`PeriodicScalarFieldRenderer::PeriodicScalarFieldRenderer(const Manifold& m,`
429	`bool smooth,`	429	`bool smooth,`
430	`VertexAttributeVector<double>& field,`	430	`VertexAttributeVector<double>& field,`
431	`float gamma): SimpleShaderRenderer(vss, fss)`	431	`float gamma): SimpleShaderRenderer(vss, fss)`
432	`{`	432	`{`
433		433
434	`GLint old_prog;`	434	`GLint old_prog;`
435	`glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);`	435	`glGetIntegerv(GL_CURRENT_PROGRAM, &old_prog);`
436	`glUseProgram(prog);`	436	`glUseProgram(prog);`
437		437
438	`GLuint scalar_attrib = glGetAttribLocation(prog, "scalar");`	438	`GLuint scalar_attrib = glGetAttribLocation(prog, "scalar");`
439		439
440	`// static float& gamma = CreateCVar("display.scalar_field_renderer.gamma",2.2f);`	440	`// static float& gamma = CreateCVar("display.scalar_field_renderer.gamma",2.2f);`
441	`glUniform1fARB(glGetUniformLocationARB(prog, "gamma"), gamma);`	441	`glUniform1fARB(glGetUniformLocationARB(prog, "gamma"), gamma);`
442	`glNewList(display_list,GL_COMPILE);`	442	`glNewList(display_list,GL_COMPILE);`
443		443
444	`for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f){`	444	`for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f){`
445	`if(!smooth)`	445	`if(!smooth)`
446	`glNormal3dv(normal(m, *f).get());`	446	`glNormal3dv(normal(m, *f).get());`
447	`if(no_edges(m, *f)== 3)`	447	`if(no_edges(m, *f)== 3)`
448	`glBegin(GL_TRIANGLES);`	448	`glBegin(GL_TRIANGLES);`
449	`else`	449	`else`
450	`glBegin(GL_POLYGON);`	450	`glBegin(GL_POLYGON);`
451		451
452		452
453	`for(Walker w = m.walker(*f); !w.full_circle(); w = w.circulate_face_ccw()){`	453	`for(Walker w = m.walker(*f); !w.full_circle(); w = w.circulate_face_ccw()){`
454	`Vec3d n(normal(m, w.vertex()));`	454	`Vec3d n(normal(m, w.vertex()));`
455	`if(smooth)`	455	`if(smooth)`
456	`glNormal3dv(n.get());`	456	`glNormal3dv(n.get());`
457	`glVertexAttrib1d(scalar_attrib, field[w.vertex()]);`	457	`glVertexAttrib1d(scalar_attrib, field[w.vertex()]);`
458	`glVertex3dv(m.pos(w.vertex()).get());`	458	`glVertex3dv(m.pos(w.vertex()).get());`
459	`}`	459	`}`
460	`glEnd();`	460	`glEnd();`
461	`}`	461	`}`
462	`glEndList();`	462	`glEndList();`
463	`glUseProgram(old_prog);`	463	`glUseProgram(old_prog);`
464		464
465	`}`	465	`}`
466		466
467	`const string AmbientOcclusionRenderer::vss =`	467	`const string AmbientOcclusionRenderer::vss =`
468	`" attribute float scalar;\n"`	468	`" attribute float scalar;\n"`
469	`" varying vec3 _normal;\n"`	469	`" varying vec3 _normal;\n"`
470	`" varying float s;\n"`	470	`" varying float s;\n"`
471	`" \n"`	471	`" \n"`
472	`" void main(void)\n"`	472	`" void main(void)\n"`
473	`" {\n"`	473	`" {\n"`
474	`" gl_Position = ftransform();\n"`	474	`" gl_Position = ftransform();\n"`
475	`" _normal = normalize(gl_NormalMatrix * gl_Normal);\n"`	475	`" _normal = normalize(gl_NormalMatrix * gl_Normal);\n"`
476	`" s=scalar;\n"`	476	`" s=scalar;\n"`
477	`" }\n";`	477	`" }\n";`
478		478
479	`const string AmbientOcclusionRenderer::fss =`	479	`const string AmbientOcclusionRenderer::fss =`
480	`" varying vec3 _normal;\n"`	480	`" varying vec3 _normal;\n"`
481	`" varying float s;\n"`	481	`" varying float s;\n"`
482	`" uniform float scalar_max;\n"`	482	`" uniform float scalar_max;\n"`
483	`" const vec3 light_dir = vec3(0,0,1);\n"`	483	`" const vec3 light_dir = vec3(0,0,1);\n"`
484	`" \n"`	484	`" \n"`
485	`" void main()\n"`	485	`" void main()\n"`
486	`" {\n"`	486	`" {\n"`
487	`" vec3 normal = normalize(_normal);\n"`	487	`" vec3 normal = normalize(_normal);\n"`
488	`" float dot_ln = max(0.0,dot(light_dir, normal));\n"`	488	`" float dot_ln = max(0.0,dot(light_dir, normal));\n"`
489	`" \n"`	489	`" \n"`
490	`" float s_norm = min(1.0,s/scalar_max+1.0);\n"`	490	`" float s_norm = min(1.0,s/scalar_max+1.0);\n"`
491	`" \n"`	491	`" \n"`
492	`" gl_FragColor = s_norm * vec4(1.0);\n"`	492	`" gl_FragColor = s_norm * vec4(1.0);\n"`
493	`" gl_FragColor *= dot_ln;\n"`	493	`" gl_FragColor *= dot_ln;\n"`
494	`" gl_FragColor.r = pow(gl_FragColor.r, 1.0);\n"`	494	`" gl_FragColor.r = pow(gl_FragColor.r, 1.0);\n"`
495	`" gl_FragColor.g = pow(gl_FragColor.g, 1.0);\n"`	495	`" gl_FragColor.g = pow(gl_FragColor.g, 1.0);\n"`
496	`" gl_FragColor.b = pow(gl_FragColor.b, 1.0);\n"`	496	`" gl_FragColor.b = pow(gl_FragColor.b, 1.0);\n"`
497	`" }\n";`	497	`" }\n";`
498		498
499	`AmbientOcclusionRenderer::AmbientOcclusionRenderer(const Manifold& m, bool smooth, VertexAttributeVector<double>& field, double max_val):`	499	`AmbientOcclusionRenderer::AmbientOcclusionRenderer(const Manifold& m, bool smooth, VertexAttributeVector<double>& field, double max_val):`
500	`SimpleShaderRenderer(vss,fss)`	500	`SimpleShaderRenderer(vss,fss)`

Subversion Repositories gelsvn

(root)/trunk/src/GLGraphics/ManifoldRenderer.cpp – Rev 601 → 607