5 #include "../gfxdevice.h"
6 #include "../gfxtools.h"
14 #define ZSTEP (1/65536.0)
16 typedef struct _fontlist {
18 struct _fontlist*next;
21 typedef struct _internal {
28 GLUtesselator *tesselator;
29 GLUtesselator *tesselator_tex;
34 static void dbg(char*format, ...)
41 va_start(arglist, format);
42 vsprintf(buf, format, arglist);
45 while(l && buf[l-1]=='\n') {
49 printf("(device-opengl) %s\n", buf);
57 typedef void(*callbackfunction_t)();
59 void CALLBACK errorCallback(GLenum errorCode)
61 const GLubyte *estring;
62 estring = gluErrorString(errorCode);
63 dbg("Tessellation Error: %s\n", estring);
66 void CALLBACK beginCallback(GLenum which)
70 void CALLBACK endCallback(void)
74 void CALLBACK vertexCallback(GLvoid *vertex)
76 double*xyz = (GLdouble*)vertex;
77 glVertex3d(xyz[0],xyz[1],xyz[2]);
79 void CALLBACK vertexCallbackTex(GLvoid *vertex)
81 double*v = (GLdouble*)vertex;
82 glTexCoord2f(v[3],v[4]);
83 glVertex3d(v[0],v[1],v[2]);
85 void CALLBACK combineCallbackTex(GLdouble coords[3], GLdouble *data[4], GLfloat w[4], GLdouble **out)
87 GLdouble *vertex, *texCoord;
88 vertex = (GLdouble *) malloc(5 * sizeof(GLdouble));
89 vertex[0] = coords[0];
90 vertex[1] = coords[1];
91 vertex[2] = coords[2];
92 texCoord = &vertex[3];
93 vertex[3] = w[0]*data[0][3] + w[1]*data[1][3] + w[2]*data[2][3] + w[3]*data[3][3];
94 vertex[4] = w[0]*data[0][4] + w[1]*data[1][4] + w[2]*data[2][4] + w[3]*data[3][4];
98 int opengl_setparameter(struct _gfxdevice*dev, const char*key, const char*value)
100 dbg("setparameter %s=%s", key, value);
104 void opengl_startpage(struct _gfxdevice*dev, int width, int height)
106 dbg("startpage %d %d", width, height);
107 internal_t*i = (internal_t*)dev->internal;
113 void opengl_startclip(struct _gfxdevice*dev, gfxline_t*line)
118 void opengl_endclip(struct _gfxdevice*dev)
123 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)
125 internal_t*i = (internal_t*)dev->internal;
129 glColor4f(color->r/255.0, color->g/255.0, color->b/255.0, color->a/255.0);
134 if(l->type == gfx_moveTo) {
142 glBegin(GL_LINE_STRIP);
144 glVertex3d(l->x, l->y, (i->currentz*ZSTEP));
154 void opengl_fill(struct _gfxdevice*dev, gfxline_t*line, gfxcolor_t*color)
156 internal_t*i = (internal_t*)dev->internal;
162 glColor4f(color->r/255.0, color->g/255.0, color->b/255.0, color->a/255.0);
164 gluTessBeginPolygon(i->tesselator, NULL);
171 xyz = malloc(sizeof(double)*3*len);
175 if(l->type == gfx_moveTo) {
178 gluTessEndContour(i->tesselator);
183 gluTessBeginContour(i->tesselator);
188 xyz[len*3+2] = (i->currentz*ZSTEP);
189 gluTessVertex(i->tesselator, &xyz[len*3], &xyz[len*3]);
196 gluTessEndContour(i->tesselator);
198 gluTessEndPolygon(i->tesselator);
203 void opengl_fillbitmap(struct _gfxdevice*dev, gfxline_t*line, gfximage_t*img, gfxmatrix_t*matrix, gfxcxform_t*cxform)
205 internal_t*i = (internal_t*)dev->internal;
210 glColor4f(1.0,0,0,1.0);
213 glGenTextures(1, texIDs);
217 while(1<<width_bits < img->width)
219 while(1<<height_bits < img->height)
221 int newwidth = 1<<width_bits;
222 int newheight = 1<<height_bits;
224 unsigned char*data = malloc(newwidth*newheight*4);
226 for(y=0;y<img->height;y++) {
227 for(x=0;x<img->width;x++) {
228 data[(y*newwidth+x)*4+0] = img->data[y*img->width+x].r;
229 data[(y*newwidth+x)*4+1] = img->data[y*img->width+x].g;
230 data[(y*newwidth+x)*4+2] = img->data[y*img->width+x].b;
231 data[(y*newwidth+x)*4+3] = img->data[y*img->width+x].a;
236 gfxmatrix_invert(matrix, &m2);
244 glEnable(GL_TEXTURE_2D);
245 glBindTexture(GL_TEXTURE_2D, texIDs[0]);
246 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, newwidth, newheight, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
248 glEnable(GL_TEXTURE_2D);
249 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
250 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
251 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
252 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
253 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
255 gluTessBeginPolygon(i->tesselator_tex, NULL);
262 xyz = malloc(sizeof(double)*5*len);
266 if(l->type == gfx_moveTo) {
269 gluTessEndContour(i->tesselator_tex);
274 gluTessBeginContour(i->tesselator_tex);
279 xyz[len*5+2] = (i->currentz*ZSTEP);
282 gfxmatrix_transform(&m2, /*src*/&xyz[len*5+0], /*dest*/&xyz[len*5+3]);
284 gluTessVertex(i->tesselator_tex, &xyz[len*5], &xyz[len*5]);
291 gluTessEndContour(i->tesselator_tex);
293 gluTessEndPolygon(i->tesselator_tex);
297 glDisable(GL_TEXTURE_2D);
300 void opengl_fillgradient(struct _gfxdevice*dev, gfxline_t*line, gfxgradient_t*gradient, gfxgradienttype_t type, gfxmatrix_t*matrix)
305 void opengl_addfont(gfxdevice_t*dev, gfxfont_t*font)
307 internal_t*i = (internal_t*)dev->internal;
309 fontlist_t*last=0,*l = i->fontlist;
312 if(!strcmp((char*)l->font->id, font->id)) {
313 return; // we already know this font
317 l = (fontlist_t*)rfx_calloc(sizeof(fontlist_t));
327 void opengl_drawchar(gfxdevice_t*dev, gfxfont_t*font, int glyphnr, gfxcolor_t*color, gfxmatrix_t*matrix)
329 internal_t*i = (internal_t*)dev->internal;
331 if(i->font && i->font->id && !strcmp(font->id, i->font->id)) {
332 // current font is correct
334 fontlist_t*l = i->fontlist;
337 if(!strcmp((char*)l->font->id, font->id)) {
344 fprintf(stderr, "Unknown font id: %s", font->id);
349 gfxglyph_t*glyph = &i->font->glyphs[glyphnr];
351 gfxline_t*line2 = gfxline_clone(glyph->line);
352 gfxline_transform(line2, matrix);
353 opengl_fill(dev, line2, color);
361 void opengl_drawlink(struct _gfxdevice*dev, gfxline_t*line, char*action)
366 void opengl_endpage(struct _gfxdevice*dev)
371 int opengl_result_save(struct _gfxresult*gfx, char*filename)
376 void* opengl_result_get(struct _gfxresult*gfx, char*name)
381 void opengl_result_destroy(struct _gfxresult*gfx)
383 dbg("result:destroy");
387 gfxresult_t*opengl_finish(struct _gfxdevice*dev)
390 internal_t*i = (internal_t*)dev->internal;
391 gluDeleteTess(i->tesselator);i->tesselator=0;
392 gluDeleteTess(i->tesselator_tex);i->tesselator_tex=0;
393 gfxresult_t*result = (gfxresult_t*)malloc(sizeof(gfxresult_t));
394 memset(result, 0, sizeof(gfxresult_t));
395 result->save = opengl_result_save;
396 result->get = opengl_result_get;
397 result->destroy = opengl_result_destroy;
401 void gfxdevice_opengl_init(gfxdevice_t*dev)
404 internal_t*i = (internal_t*)rfx_calloc(sizeof(internal_t));
405 memset(dev, 0, sizeof(gfxdevice_t));
409 dev->setparameter = opengl_setparameter;
410 dev->startpage = opengl_startpage;
411 dev->startclip = opengl_startclip;
412 dev->endclip = opengl_endclip;
413 dev->stroke = opengl_stroke;
414 dev->fill = opengl_fill;
415 dev->fillbitmap = opengl_fillbitmap;
416 dev->fillgradient = opengl_fillgradient;
417 dev->addfont = opengl_addfont;
418 dev->drawchar = opengl_drawchar;
419 dev->drawlink = opengl_drawlink;
420 dev->endpage = opengl_endpage;
421 dev->finish = opengl_finish;
423 i->tesselator = gluNewTess();
424 gluTessCallback(i->tesselator, GLU_TESS_ERROR, (callbackfunction_t)errorCallback);
425 gluTessCallback(i->tesselator, GLU_TESS_VERTEX, (callbackfunction_t)vertexCallback);
426 gluTessCallback(i->tesselator, GLU_TESS_BEGIN, (callbackfunction_t)beginCallback);
427 gluTessCallback(i->tesselator, GLU_TESS_END, (callbackfunction_t)endCallback);
429 i->tesselator_tex = gluNewTess();
430 gluTessCallback(i->tesselator_tex, GLU_TESS_ERROR, (callbackfunction_t)errorCallback);
431 gluTessCallback(i->tesselator_tex, GLU_TESS_VERTEX, (callbackfunction_t)vertexCallbackTex);
432 gluTessCallback(i->tesselator_tex, GLU_TESS_BEGIN, (callbackfunction_t)beginCallback);
433 gluTessCallback(i->tesselator_tex, GLU_TESS_END, (callbackfunction_t)endCallback);
434 gluTessCallback(i->tesselator_tex, GLU_TESS_COMBINE, (callbackfunction_t)combineCallbackTex);
436 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);