1 /* Gacela, a GNU Guile extension for fast games development
2 Copyright (C) 2009 by Javier Sancho Fernandez <jsf at jsancho dot org>
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
28 static scm_t_bits glTexture_tag;
31 make_glTexture (GLuint texture_id)
34 struct glTexture *glTexture;
36 glTexture = (struct glTexture *) scm_gc_malloc (sizeof (struct glTexture), "glTexture");
38 glTexture->texture_id = 0;
40 SCM_NEWSMOB (smob, glTexture_tag, glTexture);
42 glTexture->texture_id = texture_id;
48 get_glTexture_id (SCM glTexture_smob)
50 struct glTexture *glTexture;
52 scm_assert_smob_type (glTexture_tag, glTexture_smob);
53 glTexture = (struct glTexture *) SCM_SMOB_DATA (glTexture_smob);
54 return glTexture->texture_id;
58 get_glTexture_width (SCM glTexture_smob)
60 struct glTexture *glTexture;
62 scm_assert_smob_type (glTexture_tag, glTexture_smob);
63 glTexture = (struct glTexture *) SCM_SMOB_DATA (glTexture_smob);
64 return scm_from_int (glTexture->width);
68 get_glTexture_height (SCM glTexture_smob)
70 struct glTexture *glTexture;
72 scm_assert_smob_type (glTexture_tag, glTexture_smob);
73 glTexture = (struct glTexture *) SCM_SMOB_DATA (glTexture_smob);
74 return scm_from_int (glTexture->height);
78 set_glTexture_size (SCM glTexture_smob, SCM width, SCM height)
80 struct glTexture *glTexture;
82 scm_assert_smob_type (glTexture_tag, glTexture_smob);
83 glTexture = (struct glTexture *) SCM_SMOB_DATA (glTexture_smob);
84 glTexture->width = scm_to_int (width);
85 glTexture->height = scm_to_int (height);
86 return SCM_UNSPECIFIED;
90 free_glTexture (SCM glTexture_smob)
92 struct glTexture *glTexture = (struct glTexture *) SCM_SMOB_DATA (glTexture_smob);
95 text[0] = glTexture->texture_id;
96 glDeleteTextures (1, &text[0]);
97 scm_gc_free (glTexture, sizeof (struct glTexture), "glTexture");
104 gacela_glBegin (SCM mode)
106 glBegin (scm_to_int (mode));
107 return SCM_UNSPECIFIED;
111 gacela_glClear (SCM mask)
113 glClear (scm_to_int (mask));
114 return SCM_UNSPECIFIED;
118 gacela_glClearColor (SCM red, SCM green, SCM blue, SCM alpha)
120 glClearColor (scm_to_double (red), scm_to_double (green), scm_to_double (blue), scm_to_double (alpha));
121 return SCM_UNSPECIFIED;
125 gacela_glClearDepth (SCM depth)
127 glClearDepth (scm_to_double (depth));
128 return SCM_UNSPECIFIED;
132 gacela_glColor3f (SCM red, SCM green, SCM blue)
134 glColor3f (scm_to_double (red), scm_to_double (green), scm_to_double (blue));
135 return SCM_UNSPECIFIED;
139 gacela_glColor4f (SCM red, SCM green, SCM blue, SCM alpha)
141 glColor4f (scm_to_double (red), scm_to_double (green), scm_to_double (blue), scm_to_double (alpha));
142 return SCM_UNSPECIFIED;
146 gacela_glDepthFunc (SCM func)
148 glDepthFunc (scm_to_int (func));
149 return SCM_UNSPECIFIED;
153 gacela_glEnable (SCM cap)
155 glEnable (scm_to_int (cap));
156 return SCM_UNSPECIFIED;
160 gacela_glDisable (SCM cap)
162 glDisable (scm_to_int (cap));
163 return SCM_UNSPECIFIED;
170 return SCM_UNSPECIFIED;
174 gacela_glHint (SCM target, SCM mode)
176 glHint (scm_to_int (target), scm_to_int (mode));
177 return SCM_UNSPECIFIED;
181 gacela_glLoadIdentity (void)
184 return SCM_UNSPECIFIED;
188 gacela_glMatrixMode (SCM mode)
190 glMatrixMode (scm_to_int (mode));
191 return SCM_UNSPECIFIED;
195 gacela_glRotatef (SCM angle, SCM x, SCM y, SCM z)
197 glRotatef (scm_to_double (angle), scm_to_double (x), scm_to_double (y), scm_to_double (z));
198 return SCM_UNSPECIFIED;
202 gacela_glShadeModel (SCM mode)
204 glShadeModel (scm_to_int (mode));
205 return SCM_UNSPECIFIED;
209 gacela_glTranslatef (SCM x, SCM y, SCM z)
211 glTranslatef (scm_to_double (x), scm_to_double (y), scm_to_double (z));
212 return SCM_UNSPECIFIED;
216 gacela_glVertex2f (SCM x, SCM y)
218 glVertex2f (scm_to_double (x), scm_to_double (y));
219 return SCM_UNSPECIFIED;
223 gacela_glVertex3f (SCM x, SCM y, SCM z)
225 glVertex3f (scm_to_double (x), scm_to_double (y), scm_to_double (z));
226 return SCM_UNSPECIFIED;
230 gacela_glViewport (SCM x, SCM y, SCM width, SCM height)
232 glViewport (scm_to_int (x), scm_to_int (y), scm_to_int (width), scm_to_int (height));
233 return SCM_UNSPECIFIED;
237 gacela_glGenTextures (SCM n)
240 int nint = scm_to_int (n);
244 textures = scm_list_n (SCM_UNDEFINED);
245 glGenTextures (nint, &text[0]);
247 for (i = nint - 1; i >= 0; i--) {
248 textures = scm_cons (make_glTexture (text[i]), textures);
255 gacela_glDeleteTextures (SCM n, SCM textures)
257 int nint = scm_to_int (n);
261 for (i = 0; i < nint; i++) {
262 text[i] = scm_to_int (scm_list_ref (textures, scm_from_int (i)));
265 glDeleteTextures (nint, &text[0]);
266 return SCM_UNSPECIFIED;
270 gacela_glBindTexture (SCM target, SCM texture)
272 glBindTexture (scm_to_int (target), get_glTexture_id (texture));
273 return SCM_UNSPECIFIED;
277 gacela_glTexImage2D (SCM target, SCM level, SCM internalFormat, SCM width, SCM height, SCM border, SCM format, SCM type, SCM pixels)
279 glTexImage2D (scm_to_int (target), scm_to_int (level), scm_to_int (internalFormat), scm_to_int (width), \
280 scm_to_int (height), scm_to_int (border), scm_to_int (format), scm_to_int (type), \
281 (GLvoid *)scm_to_int (pixels));
282 return SCM_UNSPECIFIED;
286 gacela_glTexParameteri (SCM target, SCM pname, SCM param)
288 glTexParameteri (scm_to_int (target), scm_to_int (pname), scm_to_int (param));
289 return SCM_UNSPECIFIED;
293 gacela_glTexCoord2f (SCM s, SCM t)
295 glTexCoord2f (scm_to_double (s), scm_to_double (t));
296 return SCM_UNSPECIFIED;
300 gacela_glLightfv (SCM light, SCM pname, SCM params)
302 int n = scm_to_int (scm_length (params));
303 GLfloat gl_params[n];
306 for (i = 0; i < n; i++) {
307 gl_params[i] = scm_to_double (scm_list_ref (params, scm_from_int (i)));
310 glLightfv (scm_to_int (light), scm_to_int (pname), gl_params);
311 return SCM_UNSPECIFIED;
315 gacela_glNormal3f (SCM nx, SCM ny, SCM nz)
317 glNormal3f (scm_to_double (nx), scm_to_double (ny), scm_to_double (nz));
318 return SCM_UNSPECIFIED;
322 gacela_glBlendFunc (SCM sfactor, SCM dfactor)
324 glBlendFunc (scm_to_int (sfactor), scm_to_int (dfactor));
325 return SCM_UNSPECIFIED;
329 gacela_glOrtho (SCM left, SCM right, SCM bottom, SCM top, SCM near_val, SCM far_val)
331 glOrtho (scm_to_double (left), scm_to_double (right), scm_to_double (bottom), scm_to_double (top), \
332 scm_to_double (near_val), scm_to_double (far_val));
333 return SCM_UNSPECIFIED;
337 gacela_glPushMatrix (void)
340 return SCM_UNSPECIFIED;
344 gacela_glPopMatrix (void)
347 return SCM_UNSPECIFIED;
351 gacela_gluPerspective (SCM fovy, SCM aspect, SCM zNear, SCM zFar)
353 gluPerspective (scm_to_double (fovy), scm_to_double (aspect), scm_to_double (zNear), scm_to_double (zFar));
354 return SCM_UNSPECIFIED;
358 gacela_gluBuild2DMipmaps (SCM target, SCM internalFormat, SCM width, SCM height, SCM format, SCM type, SCM data)
360 return scm_from_int (gluBuild2DMipmaps (scm_to_int (target), scm_to_int (internalFormat), scm_to_int (width), \
361 scm_to_int (height), scm_to_int (format), scm_to_int (type), \
362 (void *)scm_to_int (data)));
366 gacela_gluLookAt (SCM eyeX, SCM eyeY, SCM eyeZ, SCM centerX, SCM centerY, SCM centerZ, SCM upX, SCM upY, SCM upZ)
368 gluLookAt (scm_to_double (eyeX), scm_to_double (eyeY), scm_to_double (eyeZ), \
369 scm_to_double (centerX), scm_to_double (centerY), scm_to_double (centerZ), \
370 scm_to_double (upX), scm_to_double (upY), scm_to_double (upZ));
371 return SCM_UNSPECIFIED;
376 init_gacela_gl (void *data)
378 glTexture_tag = scm_make_smob_type ("glTexture", sizeof (struct glTexture));
379 scm_set_smob_free (glTexture_tag, free_glTexture);
380 scm_c_define_gsubr ("texture-w", 1, 0, 0, get_glTexture_width);
381 scm_c_define_gsubr ("texture-h", 1, 0, 0, get_glTexture_height);
382 scm_c_define_gsubr ("set-texture-size!", 3, 0, 0, set_glTexture_size);
385 scm_c_define ("GL_UNSIGNED_BYTE", scm_from_int (GL_UNSIGNED_BYTE));
388 scm_c_define ("GL_POINTS", scm_from_int (GL_POINTS));
389 scm_c_define ("GL_LINES", scm_from_int (GL_LINES));
390 scm_c_define ("GL_LINE_LOOP", scm_from_int (GL_LINE_LOOP));
391 scm_c_define ("GL_LINE_STRIP", scm_from_int (GL_LINE_STRIP));
392 scm_c_define ("GL_TRIANGLES", scm_from_int (GL_TRIANGLES));
393 scm_c_define ("GL_TRIANGLE_STRIP", scm_from_int (GL_TRIANGLE_STRIP));
394 scm_c_define ("GL_TRIANGLE_FAN", scm_from_int (GL_TRIANGLE_FAN));
395 scm_c_define ("GL_QUADS", scm_from_int (GL_QUADS));
396 scm_c_define ("GL_QUAD_STRIP", scm_from_int (GL_QUAD_STRIP));
397 scm_c_define ("GL_POLYGON", scm_from_int (GL_POLYGON));
400 scm_c_define ("GL_MODELVIEW", scm_from_int (GL_MODELVIEW));
401 scm_c_define ("GL_PROJECTION", scm_from_int (GL_PROJECTION));
404 scm_c_define ("GL_LEQUAL", scm_from_int (GL_LEQUAL));
405 scm_c_define ("GL_DEPTH_TEST", scm_from_int (GL_DEPTH_TEST));
408 scm_c_define ("GL_LIGHTING", scm_from_int (GL_LIGHTING));
409 scm_c_define ("GL_LIGHT1", scm_from_int (GL_LIGHT1));
410 scm_c_define ("GL_AMBIENT", scm_from_int (GL_AMBIENT));
411 scm_c_define ("GL_DIFFUSE", scm_from_int (GL_DIFFUSE));
412 scm_c_define ("GL_POSITION", scm_from_int (GL_POSITION));
413 scm_c_define ("GL_SMOOTH", scm_from_int (GL_SMOOTH));
416 scm_c_define ("GL_BLEND", scm_from_int (GL_BLEND));
417 scm_c_define ("GL_ONE", scm_from_int (GL_ONE));
418 scm_c_define ("GL_ONE_MINUS_SRC_ALPHA", scm_from_int (GL_ONE_MINUS_SRC_ALPHA));
419 scm_c_define ("GL_SRC_ALPHA", scm_from_int (GL_SRC_ALPHA));
422 scm_c_define ("GL_LINEAR", scm_from_int (GL_LINEAR));
424 // Buffers, Pixel Drawing/Reading
425 scm_c_define ("GL_RGB", scm_from_int (GL_RGB));
426 scm_c_define ("GL_RGBA", scm_from_int (GL_RGBA));
429 scm_c_define ("GL_PERSPECTIVE_CORRECTION_HINT", scm_from_int (GL_PERSPECTIVE_CORRECTION_HINT));
430 scm_c_define ("GL_NICEST", scm_from_int (GL_NICEST));
433 scm_c_define ("GL_TEXTURE_2D", scm_from_int (GL_TEXTURE_2D));
434 scm_c_define ("GL_TEXTURE_MAG_FILTER", scm_from_int (GL_TEXTURE_MAG_FILTER));
435 scm_c_define ("GL_TEXTURE_MIN_FILTER", scm_from_int (GL_TEXTURE_MIN_FILTER));
436 scm_c_define ("GL_LINEAR_MIPMAP_NEAREST", scm_from_int (GL_LINEAR_MIPMAP_NEAREST));
437 scm_c_define ("GL_NEAREST", scm_from_int (GL_NEAREST));
439 // glPush/PopAttrib bits
440 scm_c_define ("GL_DEPTH_BUFFER_BIT", scm_from_int (GL_DEPTH_BUFFER_BIT));
441 scm_c_define ("GL_COLOR_BUFFER_BIT", scm_from_int (GL_COLOR_BUFFER_BIT));
444 scm_c_define ("GL_BGR", scm_from_int (GL_BGR));
445 scm_c_define ("GL_BGRA", scm_from_int (GL_BGRA));
448 scm_c_define_gsubr ("glBegin", 1, 0, 0, gacela_glBegin);
449 scm_c_define_gsubr ("glClear", 1, 0, 0, gacela_glClear);
450 scm_c_define_gsubr ("glClearColor", 4, 0, 0, gacela_glClearColor);
451 scm_c_define_gsubr ("glClearDepth", 1, 0, 0, gacela_glClearDepth);
452 scm_c_define_gsubr ("glColor3f", 3, 0, 0, gacela_glColor3f);
453 scm_c_define_gsubr ("glColor4f", 4, 0, 0, gacela_glColor4f);
454 scm_c_define_gsubr ("glDepthFunc", 1, 0, 0, gacela_glDepthFunc);
455 scm_c_define_gsubr ("glEnable", 1, 0, 0, gacela_glEnable);
456 scm_c_define_gsubr ("glDisable", 1, 0, 0, gacela_glDisable);
457 scm_c_define_gsubr ("glEnd", 0, 0, 0, gacela_glEnd);
458 scm_c_define_gsubr ("glHint", 2, 0, 0, gacela_glHint);
459 scm_c_define_gsubr ("glLoadIdentity", 0, 0, 0, gacela_glLoadIdentity);
460 scm_c_define_gsubr ("glMatrixMode", 1, 0, 0, gacela_glMatrixMode);
461 scm_c_define_gsubr ("glRotatef", 4, 0, 0, gacela_glRotatef);
462 scm_c_define_gsubr ("glShadeModel", 1, 0, 0, gacela_glShadeModel);
463 scm_c_define_gsubr ("glTranslatef", 3, 0, 0, gacela_glTranslatef);
464 scm_c_define_gsubr ("glVertex2f", 2, 0, 0, gacela_glVertex2f);
465 scm_c_define_gsubr ("glVertex3f", 3, 0, 0, gacela_glVertex3f);
466 scm_c_define_gsubr ("glViewport", 4, 0, 0, gacela_glViewport);
467 scm_c_define_gsubr ("glGenTextures", 1, 0, 0, gacela_glGenTextures);
468 scm_c_define_gsubr ("glDeleteTextures", 2, 0, 0, gacela_glDeleteTextures);
469 scm_c_define_gsubr ("glBindTexture", 2, 0, 0, gacela_glBindTexture);
470 scm_c_define_gsubr ("glTexImage2D", 9, 0, 0, gacela_glTexImage2D);
471 scm_c_define_gsubr ("glTexParameteri", 3, 0, 0, gacela_glTexParameteri);
472 scm_c_define_gsubr ("glTexCoord2f", 2, 0, 0, gacela_glTexCoord2f);
473 scm_c_define_gsubr ("glLightfv", 3, 0, 0, gacela_glLightfv);
474 scm_c_define_gsubr ("glNormal3f", 3, 0, 0, gacela_glNormal3f);
475 scm_c_define_gsubr ("glBlendFunc", 2, 0, 0, gacela_glBlendFunc);
476 scm_c_define_gsubr ("glOrtho", 6, 0, 0, gacela_glOrtho);
477 scm_c_define_gsubr ("glPushMatrix", 0, 0, 0, gacela_glPushMatrix);
478 scm_c_define_gsubr ("glPopMatrix", 0, 0, 0, gacela_glPopMatrix);
480 scm_c_define_gsubr ("gluPerspective", 4, 0, 0, gacela_gluPerspective);
481 scm_c_define_gsubr ("gluBuild2DMipmaps", 7, 0, 0, gacela_gluBuild2DMipmaps);
482 scm_c_define_gsubr ("gluLookAt", 9, 0, 0, gacela_gluLookAt);
486 scm_init_gacela_gl ()
488 init_gacela_gl (NULL);