X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=lib%2Fdevices%2Fopengl.c;h=fd1b745681eac6872bf10836f1b110649a15d7c1;hb=e4687b3aa2aed49fb16ba9e9561344d808750297;hp=bf9c1d18f493292ae4290308cbf70a1cfc5761e0;hpb=4e8fc32aa9cb30e15aa74c33a960563c53ae3621;p=swftools.git

diff --git a/lib/devices/opengl.c b/lib/devices/opengl.c
index bf9c1d1..fd1b745 100644
--- a/lib/devices/opengl.c
+++ b/lib/devices/opengl.c
@@ -1,19 +1,26 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <math.h>
 
 #include "../gfxdevice.h"
 #include "../gfxtools.h"
+#include "../MD5.h"
+#include "../types.h"
 
+#include <math.h>
 #include <time.h>
 #include <GL/gl.h>
 #include <GL/glut.h>
 
-#include <setjmp.h>
+#include <stdarg.h>
+
+//#define ZSTEP (1/65536.0)
+#define ZSTEP (1/32.0)
+//#define ZSTEP (1/4.0)
 
 typedef struct _fontlist {
     gfxfont_t*font;
-    char*id;
     struct _fontlist*next;
 } fontlist_t;
 
@@ -21,127 +28,547 @@ typedef struct _internal {
     gfxfont_t*font;
     char*fontid;
     fontlist_t* fontlist;
+    int width, height;
+    int currentz;
+   
+    int config_polygonoutlines;
+   
+    GLUtesselator *tesselator;
+    GLUtesselator *tesselator_line;
+    GLUtesselator *tesselator_tex;
 } internal_t;
 
+static int verbose = 0;
+static void dbg(char*format, ...)
+{
+    char buf[1024];
+    int l;
+    va_list arglist;
+    if(!verbose)
+	return;
+    va_start(arglist, format);
+    vsnprintf(buf, sizeof(buf)-1, format, arglist);
+    va_end(arglist);
+    l = strlen(buf);
+    while(l && buf[l-1]=='\n') {
+	buf[l-1] = 0;
+	l--;
+    }
+    printf("(device-opengl) %s\n", buf);
+    fflush(stdout);
+}
+
+#ifndef CALLBACK 
+#define CALLBACK
+#endif
+
+typedef void(*callbackfunction_t)();
+
+void CALLBACK errorCallback(GLenum errorCode)
+{
+   const GLubyte *estring;
+   estring = gluErrorString(errorCode);
+   printf("Tessellation Error: %s\n", estring);
+   exit(0);
+}
+void CALLBACK beginCallback(GLenum which)
+{
+    glBegin(which);
+}
+void CALLBACK endCallback(void)
+{
+    glEnd();
+}
+void CALLBACK vertexCallback(GLvoid *vertex)
+{
+   double*xyz = (GLdouble*)vertex;
+   glVertex3d(xyz[0],xyz[1],xyz[2]);
+}
+void CALLBACK combineCallback(GLdouble coords[3], GLdouble *data[4], GLfloat w[4], GLdouble **out)
+{
+   GLdouble *vertex;
+   vertex = (GLdouble *) malloc(6 * sizeof(GLdouble));
+   vertex[0] = coords[0];
+   vertex[1] = coords[1];
+   vertex[2] = coords[2];
+   *out = vertex;
+}
+void CALLBACK vertexCallbackTex(GLvoid *vertex)
+{
+   double*v = (GLdouble*)vertex;
+   glTexCoord2f(v[3],v[4]);
+   glVertex3d(v[0],v[1],v[2]);
+}
+void CALLBACK combineCallbackTex(GLdouble coords[3], GLdouble *data[4], GLfloat w[4], GLdouble **out)
+{
+   GLdouble *vertex;
+   vertex = (GLdouble *) malloc(5 * sizeof(GLdouble));
+   vertex[0] = coords[0];
+   vertex[1] = coords[1];
+   vertex[2] = coords[2];
+   if(data[2] && data[3]) {
+       vertex[3] = w[0]*data[0][3] + w[1]*data[1][3] + w[2]*data[2][3] + w[3]*data[3][3];
+       vertex[4] = w[0]*data[0][4] + w[1]*data[1][4] + w[2]*data[2][4] + w[3]*data[3][4];
+   } else {
+       vertex[3] = w[0]*data[0][3] + w[1]*data[1][3];
+       vertex[4] = w[0]*data[0][4] + w[1]*data[1][4];
+   }
+   *out = vertex;
+}
+
 int opengl_setparameter(struct _gfxdevice*dev, const char*key, const char*value)
 {
+    internal_t*i = (internal_t*)dev->internal;
+    dbg("setparameter %s=%s", key, value);
+    if(!strcmp(key, "polygonoutlines")) {
+        i->config_polygonoutlines = atoi(value);
+    }
     return 0;
 }
 
-jmp_buf env;
-//jmp_buf env2;
+void opengl_startpage(struct _gfxdevice*dev, int width, int height)
+{
+    dbg("startpage %d %d", width, height);
+    internal_t*i = (internal_t*)dev->internal;
+    i->width = width;
+    i->height = height;
+    i->currentz = 0;
+}
 
-void display()
+void opengl_startclip(struct _gfxdevice*dev, gfxline_t*line)
 {
-    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-    /*if(!setjmp(env2))
-	longjmp(env, 1);*/
-    longjmp(env, 1);
+    dbg("startclip");
 }
 
-void opengl_startpage(struct _gfxdevice*dev, int width, int height)
+void opengl_endclip(struct _gfxdevice*dev)
 {
-    glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
-    glutInitWindowSize(width,height);
-    glutInitWindowPosition(100,100);
-    glutCreateWindow("gfxdevice_opengl");
-    glutDisplayFunc(display);
+    dbg("endclip");
+}
 
-    glClearColor(1.0,0.0,0.0,0.0);
-    glShadeModel(GL_FLAT);
-    glEnable(GL_DEPTH_TEST);
-    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+void opengl_stroke(struct _gfxdevice*dev, gfxline_t*line, gfxcoord_t width, gfxcolor_t*color, gfx_capType cap_style, gfx_joinType joint_style, gfxcoord_t miterLimit)
+{
+    dbg("stroke");
+    internal_t*i = (internal_t*)dev->internal;
+    i->currentz++;
+    char running = 0;
+    gfxline_t*l=0;
+
+    glColor4f(color->r/255.0, color->g/255.0, color->b/255.0, color->a/255.0);
     
-    glViewport(0,0, width, height);
+    //glLineWidth(width*64);
+    if(width <= 0) {
+        width = 1.0;
+    }
+    glLineWidth(width);
+    double z = i->currentz*ZSTEP;
 
-    glMatrixMode(GL_PROJECTION);
-    glLoadIdentity();
-    //gluPerspective(/*angle*/60.0, (GLfloat)width/(GLfloat)height, /*nearclip*/1.0, /*farclip*/30.0);
+    glPolygonOffset(0.0, 500.0);
 
-    glMatrixMode(GL_MODELVIEW);
-    glLoadIdentity();
-    glScalef(1.0/width,1.0/height,1.0);
-    
-    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-   
-    int ret=0;
-    ret = setjmp(env);
-    if(!ret) {
-	glutMainLoop();
+    l = line;
+    while(l) {
+	if(l->type == gfx_moveTo) {
+	    if(running) {
+		running = 0;
+		glEnd();
+	    }
+	}
+	if(!running) {
+	    running = 1;
+	    glBegin(GL_LINE_STRIP);
+	}
+	glVertex3d(l->x, l->y, z);
+	l=l->next;
     }
+    if(running) {
+	running = 0;
+	glEnd();
+    }
+    glLineWidth(1.0);
 }
 
-void opengl_startclip(struct _gfxdevice*dev, gfxline_t*line)
+#define SPLINE_SUBDIVISION 2
+
+void tesselatePolygon(GLUtesselator*tesselator, double z, gfxline_t*line)
 {
-    int t;
-    for(t=1;t<100;t++) {
-	glColor3f(1.0,1.0,1.0);
-	glBegin(GL_POLYGON);
-	    glVertex3f(-t*10,-t*10,0);
-	    glVertex3f(-t*10,t*10,0);
-	    glVertex3f(t*10,t*10,0);
-	    glVertex3f(t*10,-t*10,0);
-	glEnd();
+    int len = 0;
+    gfxline_t*l=0;
+    double lastx=0,lasty=0;
+    double*xyz=0;
+    char running = 0;
+    gluTessBeginPolygon(tesselator, NULL);
+    l = line;
+    len = 0;
+    while(l) {
+	if(l->type == gfx_splineTo) {
+            double c = sqrt(abs(l->x-2*l->sx+lastx) + abs(l->y-2*l->sy+lasty))*SPLINE_SUBDIVISION;
+	    int steps = (int)c;
+	    if(steps<1) steps = 1;
+	    len += steps;
+	} else {
+	    len++;
+	}
+	l = l->next;
+    }
+    //printf("full len:%d\n", len);
+    xyz = malloc(sizeof(double)*3*len);
+    l = line;
+    len = 0;
+    while(l) {
+	if(l->type == gfx_moveTo) {
+	    if(running) {
+		running = 0;
+		gluTessEndContour(tesselator);
+	    }
+	}
+	if(!running) {
+	    running = 1;
+	    gluTessBeginContour(tesselator);
+	}
+
+	if(l->type == gfx_splineTo) {
+	    int j;
+            double c = sqrt(abs(l->x-2*l->sx+lastx) + abs(l->y-2*l->sy+lasty))*SPLINE_SUBDIVISION;
+	    int steps = (int)c;
+	    if(steps<1) steps = 1;
+	    //printf("c=%f d1=%f (%f/%f) d2=%f (%f/%f)\n", c,d1,l->x-l->sx,l->y-l->sy,d2,lastx-l->sx,lasty-l->sy);
+	    //printf("%f %f %f\n", lastx, l->sx, l->x);
+	    //printf("%f %f %f\n", lasty, l->sy, l->y);
+	    for(j=1;j<=steps;j++) {
+		//printf("%d\n", j);
+		double t = (double)j / (double)steps;
+		xyz[len*3+0] = lastx*(1-t)*(1-t) + 2*l->sx*(1-t)*t + l->x*t*t;
+		xyz[len*3+1] = lasty*(1-t)*(1-t) + 2*l->sy*(1-t)*t + l->y*t*t;
+		xyz[len*3+2] = z;
+		gluTessVertex(tesselator, &xyz[len*3], &xyz[len*3]);
+		len++;
+	    }
+	    //printf("%d\n", len);
+	} else {
+	    xyz[len*3+0] = l->x;
+	    xyz[len*3+1] = l->y;
+	    xyz[len*3+2] = z;
+	    gluTessVertex(tesselator, &xyz[len*3], &xyz[len*3]);
+	    len++;
+	}
+	lastx = l->x;
+	lasty = l->y;
+
+	l=l->next;
+    }
+    if(running) {
+	running = 0;
+	gluTessEndContour(tesselator);
     }
-    //glRectf(-50,-50,0.0,0.0);
+    gluTessEndPolygon(tesselator);
+    free(xyz);
 }
 
-void opengl_endclip(struct _gfxdevice*dev)
+void opengl_fill(struct _gfxdevice*dev, gfxline_t*line, gfxcolor_t*color)
 {
+    double z;
+    dbg("fill %02x%02x%02x%02x", color->a, color->r, color->g, color->b);
+    internal_t*i = (internal_t*)dev->internal;
+
+    glDisable(GL_TEXTURE_2D);
+    glColor4f(color->r/255.0, color->g/255.0, color->b/255.0, color->a/255.0);
+    
+    i->currentz ++;
+    z = (i->currentz*ZSTEP);
+    tesselatePolygon(i->tesselator, z, line);
+
+    //tesselatePolygon(i->tesselator_line, z, line);
 }
 
-void opengl_stroke(struct _gfxdevice*dev, gfxline_t*line, gfxcoord_t width, gfxcolor_t*color, gfx_capType cap_style, gfx_joinType joint_style, gfxcoord_t miterLimit)
+typedef struct _gfxhash
 {
+    unsigned char d[16];
+} gfxhash_t;
+
+char gfxhash_compare(gfxhash_t*h1, gfxhash_t*h2)
+{
+    return !memcmp(h1->d, h2->d, 16);
 }
 
-void opengl_fill(struct _gfxdevice*dev, gfxline_t*line, gfxcolor_t*color)
+typedef struct _imgopengl
+{
+    gfxhash_t hash;
+    GLuint texID;
+    int width, height;
+    unsigned char*data;
+    struct _imgopengl*next;
+} imgopengl_t;
+
+static imgopengl_t*img2texid = 0;
+
+static gfxhash_t gfximage_hash(gfximage_t*img)
 {
+    int t;
+    int size = img->width*img->height*4;
+    U8*data = (U8*)img->data;
+    gfxhash_t hash;
+    hash_md5(data, size, hash.d);
+    return hash;
 }
 
+static void delTextures()
+{
+    imgopengl_t*i = img2texid;
+    while(i) {
+        imgopengl_t*next = i->next;
+        if(i->data) {
+            glDeleteTextures(1, &i->texID);
+            free(i->data);
+        }
+        memset(i, 0, sizeof(imgopengl_t));
+        free(i);
+        i = next;
+    }
+}
+
+static imgopengl_t*addTexture(gfximage_t*img)
+{
+    gfxhash_t hash = gfximage_hash(img);
+    imgopengl_t*i = img2texid;
+    
+    int width_bits = 0;
+    int height_bits = 0;
+    while(1<<width_bits < img->width)
+	width_bits++;
+    while(1<<height_bits < img->height)
+	height_bits++;
+    int newwidth = 1<<width_bits;
+    int newheight = 1<<height_bits;
+
+    while(i) {
+        if(gfxhash_compare(&hash, &i->hash) && newwidth==i->width && newheight==i->height) {
+            return i;
+        }
+        i = i->next;
+    }
+    
+    GLuint texIDs[1];
+    glGenTextures(1, texIDs);
+
+    i = malloc(sizeof(imgopengl_t));
+    i->hash = hash;
+    i->texID = texIDs[0];
+    i->next = img2texid;
+    img2texid = i;
+
+    i->width = newwidth;
+    i->height = newheight;
+
+    unsigned char*data = malloc(newwidth*newheight*4);
+    i->data = data;
+    int x,y;
+    for(y=0;y<img->height;y++) {
+	for(x=0;x<img->width;x++) {
+	    data[(y*newwidth+x)*4+0] = img->data[y*img->width+x].r;
+	    data[(y*newwidth+x)*4+1] = img->data[y*img->width+x].g;
+	    data[(y*newwidth+x)*4+2] = img->data[y*img->width+x].b;
+	    data[(y*newwidth+x)*4+3] = img->data[y*img->width+x].a;
+	}
+        int lastx = img->width - 1;
+        for(;x<newwidth;x++) {
+	    data[(y*newwidth+x)*4+0] = img->data[y*img->width+lastx].r;
+	    data[(y*newwidth+x)*4+1] = img->data[y*img->width+lastx].g;
+	    data[(y*newwidth+x)*4+2] = img->data[y*img->width+lastx].b;
+	    data[(y*newwidth+x)*4+3] = img->data[y*img->width+lastx].a;
+        }
+    }
+    int lasty = img->height - 1;
+    for(;y<newheight;y++) {
+        for(x=0;x<newwidth;x++) {
+	    data[(y*newwidth+x)*4+0] = img->data[lasty*img->width+x].r;
+	    data[(y*newwidth+x)*4+1] = img->data[lasty*img->width+x].g;
+	    data[(y*newwidth+x)*4+2] = img->data[lasty*img->width+x].b;
+	    data[(y*newwidth+x)*4+3] = img->data[lasty*img->width+x].a;
+        }
+    }
+    
+    glEnable(GL_TEXTURE_2D);
+    glBindTexture(GL_TEXTURE_2D, i->texID);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, i->width, i->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
+    
+    return i;
+};
+
 void opengl_fillbitmap(struct _gfxdevice*dev, gfxline_t*line, gfximage_t*img, gfxmatrix_t*matrix, gfxcxform_t*cxform)
 {
+    dbg("fillbitmap");
+    internal_t*i = (internal_t*)dev->internal;
+    char running = 0;
+    int len = 0;
+    double*xyz=0;
+    gfxline_t*l=0;
+    glColor4f(1.0,0,0.7,1.0);
+    
+    i->currentz ++;
+  
+    imgopengl_t* txt = addTexture(img);
+
+    gfxmatrix_t m2;
+    gfxmatrix_invert(matrix, &m2);
+    m2.m00 /= txt->width;
+    m2.m10 /= txt->width;
+    m2.tx /= txt->width;
+    m2.m01 /= txt->height;
+    m2.m11 /= txt->height;
+    m2.ty /= txt->height;
+
+    glEnable(GL_TEXTURE_2D);
+    glBindTexture(GL_TEXTURE_2D, txt->texID);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+    
+    gluTessBeginPolygon(i->tesselator_tex, NULL);
+    l = line;
+    len = 0;
+    while(l) {
+	len++;
+	l = l->next;
+    }
+    xyz = malloc(sizeof(double)*5*len);
+    l = line;
+    len = 0;
+    while(l) {
+	if(l->type == gfx_moveTo) {
+	    if(running) {
+		running = 0;
+		gluTessEndContour(i->tesselator_tex);
+	    }
+	}
+	if(!running) {
+	    running = 1;
+	    gluTessBeginContour(i->tesselator_tex);
+	}
+
+	xyz[len*5+0] = l->x;
+	xyz[len*5+1] = l->y;
+	xyz[len*5+2] = (i->currentz*ZSTEP);
+	xyz[len*5+3] = 0;
+	xyz[len*5+4] = 0;
+	gfxmatrix_transform(&m2, /*src*/&xyz[len*5+0], /*dest*/&xyz[len*5+3]);
+
+	gluTessVertex(i->tesselator_tex, &xyz[len*5], &xyz[len*5]);
+	len++;
+
+	l=l->next;
+    }
+
+    if(running) {
+	running = 0;
+	gluTessEndContour(i->tesselator_tex);
+    }
+    gluTessEndPolygon(i->tesselator_tex);
+    free(xyz);
+    
+    glDisable(GL_TEXTURE_2D);
 }
 
 void opengl_fillgradient(struct _gfxdevice*dev, gfxline_t*line, gfxgradient_t*gradient, gfxgradienttype_t type, gfxmatrix_t*matrix)
 {
+    dbg("fillgradient");
 }
 
-void opengl_addfont(struct _gfxdevice*dev, char*fontid, gfxfont_t*font)
+void opengl_addfont(gfxdevice_t*dev, gfxfont_t*font)
 {
+    internal_t*i = (internal_t*)dev->internal;
+    
+    fontlist_t*last=0,*l = i->fontlist;
+    while(l) {
+	last = l;
+	if(!strcmp((char*)l->font->id, font->id)) {
+	    return; // we already know this font
+	}
+	l = l->next;
+    }
+    l = (fontlist_t*)rfx_calloc(sizeof(fontlist_t));
+    l->font = font;
+    l->next = 0;
+    if(last) {
+	last->next = l;
+    } else {
+	i->fontlist = l;
+    }
 }
 
-void opengl_drawchar(struct _gfxdevice*dev, char*fontid, int glyph, gfxcolor_t*color, gfxmatrix_t*matrix)
+void opengl_drawchar(gfxdevice_t*dev, gfxfont_t*font, int glyphnr, gfxcolor_t*color, gfxmatrix_t*matrix)
 {
+    internal_t*i = (internal_t*)dev->internal;
+    if(!font)
+	return;
+
+    if(i->font && i->font->id && !strcmp(font->id, i->font->id)) {
+	// current font is correct
+    } else {
+	fontlist_t*l = i->fontlist;
+	i->font = 0;
+	while(l) {
+	    if(!strcmp((char*)l->font->id, font->id)) {
+		i->font = l->font;
+		break;
+	    }
+	    l = l->next;
+	}
+	if(i->font == 0) {
+            opengl_addfont(dev, font);
+            i->font = font;
+	    //fprintf(stderr, "Unknown font id: %s", font->id);
+	    //return;
+	}
+    }
+
+    gfxglyph_t*glyph = &i->font->glyphs[glyphnr];
+    
+    gfxline_t*line2 = gfxline_clone(glyph->line);
+    gfxline_transform(line2, matrix);
+    opengl_fill(dev, line2, color);
+    gfxline_free(line2);
+    
+    i->currentz --;
+    
+    return;
 }
 
-void opengl_drawlink(struct _gfxdevice*dev, gfxline_t*line, char*action)
+
+
+void opengl_drawlink(struct _gfxdevice*dev, gfxline_t*line, const char*action)
 {
+    dbg("link");
 }
 
 void opengl_endpage(struct _gfxdevice*dev)
 {
-    glFlush();
-    //longjmp(env2, 1);
-    glutMainLoop();
+    dbg("endpage");
 }
 
-
-int opengl_result_save(struct _gfxresult*gfx, char*filename)
+int opengl_result_save(struct _gfxresult*gfx, const char*filename)
 {
+    dbg("result:save");
     return 0;
 }
-void* opengl_result_get(struct _gfxresult*gfx, char*name)
+void* opengl_result_get(struct _gfxresult*gfx, const char*name)
 {
+    dbg("result:get");
     return 0;
 }
 void opengl_result_destroy(struct _gfxresult*gfx)
 {
+    dbg("result:destroy");
     free(gfx);
+    delTextures();
 }
 
 gfxresult_t*opengl_finish(struct _gfxdevice*dev)
 {
+    dbg("finish");
     internal_t*i = (internal_t*)dev->internal;
+    gluDeleteTess(i->tesselator);i->tesselator=0;
+    gluDeleteTess(i->tesselator_tex);i->tesselator_tex=0;
     gfxresult_t*result = (gfxresult_t*)malloc(sizeof(gfxresult_t));
     memset(result, 0, sizeof(gfxresult_t));
     result->save = opengl_result_save;
@@ -152,12 +579,11 @@ gfxresult_t*opengl_finish(struct _gfxdevice*dev)
 
 void gfxdevice_opengl_init(gfxdevice_t*dev)
 {
+    dbg("init");
     internal_t*i = (internal_t*)rfx_calloc(sizeof(internal_t));
-    int argc=1;
-    char*argv[]={"gfxdevice_opengl", 0};
-    glutInit(&argc, argv);
-    
     memset(dev, 0, sizeof(gfxdevice_t));
+    
+    dev->name = "opengl";
 
     dev->internal = i;
     
@@ -174,4 +600,27 @@ void gfxdevice_opengl_init(gfxdevice_t*dev)
     dev->drawlink = opengl_drawlink;
     dev->endpage = opengl_endpage;
     dev->finish = opengl_finish;
+
+    i->tesselator = gluNewTess();
+    gluTessCallback(i->tesselator, GLU_TESS_ERROR, (callbackfunction_t)errorCallback);
+    gluTessCallback(i->tesselator, GLU_TESS_VERTEX, (callbackfunction_t)vertexCallback);
+    gluTessCallback(i->tesselator, GLU_TESS_BEGIN, (callbackfunction_t)beginCallback);
+    gluTessCallback(i->tesselator, GLU_TESS_END, (callbackfunction_t)endCallback);
+    gluTessCallback(i->tesselator, GLU_TESS_COMBINE, (callbackfunction_t)combineCallback);
+    
+    i->tesselator_line = gluNewTess();
+    gluTessCallback(i->tesselator_line, GLU_TESS_ERROR, (callbackfunction_t)errorCallback);
+    gluTessCallback(i->tesselator_line, GLU_TESS_VERTEX, (callbackfunction_t)vertexCallback);
+    gluTessCallback(i->tesselator_line, GLU_TESS_BEGIN, (callbackfunction_t)beginCallback);
+    gluTessCallback(i->tesselator_line, GLU_TESS_END, (callbackfunction_t)endCallback);
+    gluTessProperty(i->tesselator_line, GLU_TESS_BOUNDARY_ONLY, 1.0);
+    
+    i->tesselator_tex = gluNewTess();
+    gluTessCallback(i->tesselator_tex, GLU_TESS_ERROR, (callbackfunction_t)errorCallback);
+    gluTessCallback(i->tesselator_tex, GLU_TESS_VERTEX, (callbackfunction_t)vertexCallbackTex);
+    gluTessCallback(i->tesselator_tex, GLU_TESS_BEGIN, (callbackfunction_t)beginCallback);
+    gluTessCallback(i->tesselator_tex, GLU_TESS_END, (callbackfunction_t)endCallback);
+    gluTessCallback(i->tesselator_tex, GLU_TESS_COMBINE, (callbackfunction_t)combineCallbackTex);
+    
+    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 }