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/>.
21 #include "gacela_GL.h"
30 static scm_t_bits glTexture_tag;
33 make_glTexture (GLuint texture_id)
36 struct glTexture *glTexture;
38 glTexture = (struct glTexture *) scm_gc_malloc (sizeof (struct glTexture), "glTexture");
40 glTexture->texture_id = 0;
42 SCM_NEWSMOB (smob, glTexture_tag, glTexture);
44 glTexture->texture_id = texture_id;
50 get_glTexture_id (SCM glTexture_smob)
52 struct glTexture *glTexture;
54 scm_assert_smob_type (glTexture_tag, glTexture_smob);
55 glTexture = (struct glTexture *) SCM_SMOB_DATA (glTexture_smob);
56 return glTexture->texture_id;
60 get_glTexture_width (SCM glTexture_smob)
62 struct glTexture *glTexture;
64 scm_assert_smob_type (glTexture_tag, glTexture_smob);
65 glTexture = (struct glTexture *) SCM_SMOB_DATA (glTexture_smob);
66 return scm_from_int (glTexture->width);
70 get_glTexture_height (SCM glTexture_smob)
72 struct glTexture *glTexture;
74 scm_assert_smob_type (glTexture_tag, glTexture_smob);
75 glTexture = (struct glTexture *) SCM_SMOB_DATA (glTexture_smob);
76 return scm_from_int (glTexture->height);
80 set_glTexture_size (SCM glTexture_smob, SCM width, SCM height)
82 struct glTexture *glTexture;
84 scm_assert_smob_type (glTexture_tag, glTexture_smob);
85 glTexture = (struct glTexture *) SCM_SMOB_DATA (glTexture_smob);
86 glTexture->width = scm_to_int (width);
87 glTexture->height = scm_to_int (height);
88 return SCM_UNSPECIFIED;
92 free_glTexture (SCM glTexture_smob)
94 struct glTexture *glTexture = (struct glTexture *) SCM_SMOB_DATA (glTexture_smob);
97 text[0] = glTexture->texture_id;
98 glDeleteTextures (1, &text[0]);
99 scm_gc_free (glTexture, sizeof (struct glTexture), "glTexture");
106 gacela_glBegin (SCM mode)
108 glBegin (scm_to_int (mode));
109 return SCM_UNSPECIFIED;
113 gacela_glClear (SCM mask)
115 glClear (scm_to_int (mask));
116 return SCM_UNSPECIFIED;
120 gacela_glClearColor (SCM red, SCM green, SCM blue, SCM alpha)
122 glClearColor (scm_to_double (red), scm_to_double (green), scm_to_double (blue), scm_to_double (alpha));
123 return SCM_UNSPECIFIED;
127 gacela_glClearDepth (SCM depth)
129 glClearDepth (scm_to_double (depth));
130 return SCM_UNSPECIFIED;
134 gacela_glColor3f (SCM red, SCM green, SCM blue)
136 glColor3f (scm_to_double (red), scm_to_double (green), scm_to_double (blue));
137 return SCM_UNSPECIFIED;
141 gacela_glColor4f (SCM red, SCM green, SCM blue, SCM alpha)
143 glColor4f (scm_to_double (red), scm_to_double (green), scm_to_double (blue), scm_to_double (alpha));
144 return SCM_UNSPECIFIED;
148 gacela_glDepthFunc (SCM func)
150 glDepthFunc (scm_to_int (func));
151 return SCM_UNSPECIFIED;
155 gacela_glEnable (SCM cap)
157 glEnable (scm_to_int (cap));
158 return SCM_UNSPECIFIED;
162 gacela_glDisable (SCM cap)
164 glDisable (scm_to_int (cap));
165 return SCM_UNSPECIFIED;
172 return SCM_UNSPECIFIED;
176 gacela_glHint (SCM target, SCM mode)
178 glHint (scm_to_int (target), scm_to_int (mode));
179 return SCM_UNSPECIFIED;
183 gacela_glLoadIdentity (void)
186 return SCM_UNSPECIFIED;
190 gacela_glMatrixMode (SCM mode)
192 glMatrixMode (scm_to_int (mode));
193 return SCM_UNSPECIFIED;
197 gacela_glRotatef (SCM angle, SCM x, SCM y, SCM z)
199 glRotatef (scm_to_double (angle), scm_to_double (x), scm_to_double (y), scm_to_double (z));
200 return SCM_UNSPECIFIED;
204 gacela_glShadeModel (SCM mode)
206 glShadeModel (scm_to_int (mode));
207 return SCM_UNSPECIFIED;
211 gacela_glTranslatef (SCM x, SCM y, SCM z)
213 glTranslatef (scm_to_double (x), scm_to_double (y), scm_to_double (z));
214 return SCM_UNSPECIFIED;
218 gacela_glVertex2f (SCM x, SCM y)
220 glVertex2f (scm_to_double (x), scm_to_double (y));
221 return SCM_UNSPECIFIED;
225 gacela_glVertex3f (SCM x, SCM y, SCM z)
227 glVertex3f (scm_to_double (x), scm_to_double (y), scm_to_double (z));
228 return SCM_UNSPECIFIED;
232 gacela_glViewport (SCM x, SCM y, SCM width, SCM height)
234 glViewport (scm_to_int (x), scm_to_int (y), scm_to_int (width), scm_to_int (height));
235 return SCM_UNSPECIFIED;
239 gacela_glGenTextures (SCM n)
242 int nint = scm_to_int (n);
246 textures = scm_list_n (SCM_UNDEFINED);
247 glGenTextures (nint, &text[0]);
249 for (i = nint - 1; i >= 0; i--) {
250 textures = scm_cons (make_glTexture (text[i]), textures);
257 gacela_glDeleteTextures (SCM n, SCM textures)
259 int nint = scm_to_int (n);
263 for (i = 0; i < nint; i++) {
264 text[i] = scm_to_int (scm_list_ref (textures, scm_from_int (i)));
267 glDeleteTextures (nint, &text[0]);
268 return SCM_UNSPECIFIED;
272 gacela_glBindTexture (SCM target, SCM texture)
274 glBindTexture (scm_to_int (target), get_glTexture_id (texture));
275 return SCM_UNSPECIFIED;
279 gacela_glTexImage2D (SCM target, SCM level, SCM internalFormat, SCM width, SCM height, SCM border, SCM format, SCM type, SCM pixels)
281 glTexImage2D (scm_to_int (target), scm_to_int (level), scm_to_int (internalFormat), scm_to_int (width), \
282 scm_to_int (height), scm_to_int (border), scm_to_int (format), scm_to_int (type), \
283 (GLvoid *)scm_to_int (pixels));
284 return SCM_UNSPECIFIED;
288 gacela_glTexParameteri (SCM target, SCM pname, SCM param)
290 glTexParameteri (scm_to_int (target), scm_to_int (pname), scm_to_int (param));
291 return SCM_UNSPECIFIED;
295 gacela_glTexCoord2f (SCM s, SCM t)
297 glTexCoord2f (scm_to_double (s), scm_to_double (t));
298 return SCM_UNSPECIFIED;
302 gacela_glLightfv (SCM light, SCM pname, SCM params)
304 int n = scm_to_int (scm_length (params));
305 GLfloat gl_params[n];
308 for (i = 0; i < n; i++) {
309 gl_params[i] = scm_to_double (scm_list_ref (params, scm_from_int (i)));
312 glLightfv (scm_to_int (light), scm_to_int (pname), gl_params);
313 return SCM_UNSPECIFIED;
317 gacela_glNormal3f (SCM nx, SCM ny, SCM nz)
319 glNormal3f (scm_to_double (nx), scm_to_double (ny), scm_to_double (nz));
320 return SCM_UNSPECIFIED;
324 gacela_glBlendFunc (SCM sfactor, SCM dfactor)
326 glBlendFunc (scm_to_int (sfactor), scm_to_int (dfactor));
327 return SCM_UNSPECIFIED;
331 gacela_glOrtho (SCM left, SCM right, SCM bottom, SCM top, SCM near_val, SCM far_val)
333 glOrtho (scm_to_double (left), scm_to_double (right), scm_to_double (bottom), scm_to_double (top), \
334 scm_to_double (near_val), scm_to_double (far_val));
335 return SCM_UNSPECIFIED;
339 gacela_glPushMatrix (void)
342 return SCM_UNSPECIFIED;
346 gacela_glPopMatrix (void)
349 return SCM_UNSPECIFIED;
353 gacela_gluPerspective (SCM fovy, SCM aspect, SCM zNear, SCM zFar)
355 gluPerspective (scm_to_double (fovy), scm_to_double (aspect), scm_to_double (zNear), scm_to_double (zFar));
356 return SCM_UNSPECIFIED;
360 gacela_gluBuild2DMipmaps (SCM target, SCM internalFormat, SCM width, SCM height, SCM format, SCM type, SCM data)
362 return scm_from_int (gluBuild2DMipmaps (scm_to_int (target), scm_to_int (internalFormat), scm_to_int (width), \
363 scm_to_int (height), scm_to_int (format), scm_to_int (type), \
364 (void *)scm_to_int (data)));
368 gacela_gluLookAt (SCM eyeX, SCM eyeY, SCM eyeZ, SCM centerX, SCM centerY, SCM centerZ, SCM upX, SCM upY, SCM upZ)
370 gluLookAt (scm_to_double (eyeX), scm_to_double (eyeY), scm_to_double (eyeZ), \
371 scm_to_double (centerX), scm_to_double (centerY), scm_to_double (centerZ), \
372 scm_to_double (upX), scm_to_double (upY), scm_to_double (upZ));
373 return SCM_UNSPECIFIED;
378 GL_register_functions (void* data)
380 glTexture_tag = scm_make_smob_type ("glTexture", sizeof (struct glTexture));
381 scm_set_smob_free (glTexture_tag, free_glTexture);
382 scm_c_define_gsubr ("texture-w", 1, 0, 0, get_glTexture_width);
383 scm_c_define_gsubr ("texture-h", 1, 0, 0, get_glTexture_height);
384 scm_c_define_gsubr ("set-texture-size!", 3, 0, 0, set_glTexture_size);
387 scm_c_define ("GL_UNSIGNED_BYTE", scm_from_int (GL_UNSIGNED_BYTE));
390 scm_c_define ("GL_POINTS", scm_from_int (GL_POINTS));
391 scm_c_define ("GL_LINES", scm_from_int (GL_LINES));
392 scm_c_define ("GL_LINE_LOOP", scm_from_int (GL_LINE_LOOP));
393 scm_c_define ("GL_LINE_STRIP", scm_from_int (GL_LINE_STRIP));
394 scm_c_define ("GL_TRIANGLES", scm_from_int (GL_TRIANGLES));
395 scm_c_define ("GL_TRIANGLE_STRIP", scm_from_int (GL_TRIANGLE_STRIP));
396 scm_c_define ("GL_TRIANGLE_FAN", scm_from_int (GL_TRIANGLE_FAN));
397 scm_c_define ("GL_QUADS", scm_from_int (GL_QUADS));
398 scm_c_define ("GL_QUAD_STRIP", scm_from_int (GL_QUAD_STRIP));
399 scm_c_define ("GL_POLYGON", scm_from_int (GL_POLYGON));
402 scm_c_define ("GL_MODELVIEW", scm_from_int (GL_MODELVIEW));
403 scm_c_define ("GL_PROJECTION", scm_from_int (GL_PROJECTION));
406 scm_c_define ("GL_LEQUAL", scm_from_int (GL_LEQUAL));
407 scm_c_define ("GL_DEPTH_TEST", scm_from_int (GL_DEPTH_TEST));
410 scm_c_define ("GL_LIGHTING", scm_from_int (GL_LIGHTING));
411 scm_c_define ("GL_LIGHT1", scm_from_int (GL_LIGHT1));
412 scm_c_define ("GL_AMBIENT", scm_from_int (GL_AMBIENT));
413 scm_c_define ("GL_DIFFUSE", scm_from_int (GL_DIFFUSE));
414 scm_c_define ("GL_POSITION", scm_from_int (GL_POSITION));
415 scm_c_define ("GL_SMOOTH", scm_from_int (GL_SMOOTH));
418 scm_c_define ("GL_BLEND", scm_from_int (GL_BLEND));
419 scm_c_define ("GL_ONE", scm_from_int (GL_ONE));
420 scm_c_define ("GL_ONE_MINUS_SRC_ALPHA", scm_from_int (GL_ONE_MINUS_SRC_ALPHA));
421 scm_c_define ("GL_SRC_ALPHA", scm_from_int (GL_SRC_ALPHA));
424 scm_c_define ("GL_LINEAR", scm_from_int (GL_LINEAR));
426 // Buffers, Pixel Drawing/Reading
427 scm_c_define ("GL_RGB", scm_from_int (GL_RGB));
428 scm_c_define ("GL_RGBA", scm_from_int (GL_RGBA));
431 scm_c_define ("GL_PERSPECTIVE_CORRECTION_HINT", scm_from_int (GL_PERSPECTIVE_CORRECTION_HINT));
432 scm_c_define ("GL_NICEST", scm_from_int (GL_NICEST));
435 scm_c_define ("GL_TEXTURE_2D", scm_from_int (GL_TEXTURE_2D));
436 scm_c_define ("GL_TEXTURE_MAG_FILTER", scm_from_int (GL_TEXTURE_MAG_FILTER));
437 scm_c_define ("GL_TEXTURE_MIN_FILTER", scm_from_int (GL_TEXTURE_MIN_FILTER));
438 scm_c_define ("GL_LINEAR_MIPMAP_NEAREST", scm_from_int (GL_LINEAR_MIPMAP_NEAREST));
439 scm_c_define ("GL_NEAREST", scm_from_int (GL_NEAREST));
441 // glPush/PopAttrib bits
442 scm_c_define ("GL_DEPTH_BUFFER_BIT", scm_from_int (GL_DEPTH_BUFFER_BIT));
443 scm_c_define ("GL_COLOR_BUFFER_BIT", scm_from_int (GL_COLOR_BUFFER_BIT));
446 scm_c_define ("GL_BGR", scm_from_int (GL_BGR));
447 scm_c_define ("GL_BGRA", scm_from_int (GL_BGRA));
450 scm_c_define_gsubr ("glBegin", 1, 0, 0, gacela_glBegin);
451 scm_c_define_gsubr ("glClear", 1, 0, 0, gacela_glClear);
452 scm_c_define_gsubr ("glClearColor", 4, 0, 0, gacela_glClearColor);
453 scm_c_define_gsubr ("glClearDepth", 1, 0, 0, gacela_glClearDepth);
454 scm_c_define_gsubr ("glColor3f", 3, 0, 0, gacela_glColor3f);
455 scm_c_define_gsubr ("glColor4f", 4, 0, 0, gacela_glColor4f);
456 scm_c_define_gsubr ("glDepthFunc", 1, 0, 0, gacela_glDepthFunc);
457 scm_c_define_gsubr ("glEnable", 1, 0, 0, gacela_glEnable);
458 scm_c_define_gsubr ("glDisable", 1, 0, 0, gacela_glDisable);
459 scm_c_define_gsubr ("glEnd", 0, 0, 0, gacela_glEnd);
460 scm_c_define_gsubr ("glHint", 2, 0, 0, gacela_glHint);
461 scm_c_define_gsubr ("glLoadIdentity", 0, 0, 0, gacela_glLoadIdentity);
462 scm_c_define_gsubr ("glMatrixMode", 1, 0, 0, gacela_glMatrixMode);
463 scm_c_define_gsubr ("glRotatef", 4, 0, 0, gacela_glRotatef);
464 scm_c_define_gsubr ("glShadeModel", 1, 0, 0, gacela_glShadeModel);
465 scm_c_define_gsubr ("glTranslatef", 3, 0, 0, gacela_glTranslatef);
466 scm_c_define_gsubr ("glVertex2f", 2, 0, 0, gacela_glVertex2f);
467 scm_c_define_gsubr ("glVertex3f", 3, 0, 0, gacela_glVertex3f);
468 scm_c_define_gsubr ("glViewport", 4, 0, 0, gacela_glViewport);
469 scm_c_define_gsubr ("glGenTextures", 1, 0, 0, gacela_glGenTextures);
470 scm_c_define_gsubr ("glDeleteTextures", 2, 0, 0, gacela_glDeleteTextures);
471 scm_c_define_gsubr ("glBindTexture", 2, 0, 0, gacela_glBindTexture);
472 scm_c_define_gsubr ("glTexImage2D", 9, 0, 0, gacela_glTexImage2D);
473 scm_c_define_gsubr ("glTexParameteri", 3, 0, 0, gacela_glTexParameteri);
474 scm_c_define_gsubr ("glTexCoord2f", 2, 0, 0, gacela_glTexCoord2f);
475 scm_c_define_gsubr ("glLightfv", 3, 0, 0, gacela_glLightfv);
476 scm_c_define_gsubr ("glNormal3f", 3, 0, 0, gacela_glNormal3f);
477 scm_c_define_gsubr ("glBlendFunc", 2, 0, 0, gacela_glBlendFunc);
478 scm_c_define_gsubr ("glOrtho", 6, 0, 0, gacela_glOrtho);
479 scm_c_define_gsubr ("glPushMatrix", 0, 0, 0, gacela_glPushMatrix);
480 scm_c_define_gsubr ("glPopMatrix", 0, 0, 0, gacela_glPopMatrix);
482 scm_c_define_gsubr ("gluPerspective", 4, 0, 0, gacela_gluPerspective);
483 scm_c_define_gsubr ("gluBuild2DMipmaps", 7, 0, 0, gacela_gluBuild2DMipmaps);
484 scm_c_define_gsubr ("gluLookAt", 9, 0, 0, gacela_gluLookAt);