libgender/shader.C

#include <cassert>

#include "shader.h"
#include "shader_vars.h"

#include <sstream>
#include <iomanip>

namespace shader {

  using namespace std;

  refcounted::~refcounted ()
  {
    if (refcnt)
      abort ();
  }

  void refcounted::refcnt_dec () const
  {
    if (!--refcnt)
      delete this; // quite a bit of code...
  }

  const char str_float  [] = "float";
  const char str_vec2   [] = "vec2";
  const char str_vec3   [] = "vec3";
  const char str_vec4   [] = "vec4";
  const char str_mat2   [] = "mat2";
  const char str_mat3   [] = "mat3";
  const char str_mat4   [] = "mat4";

  const char str_sampler_1d             [] = "sampler1D";
  const char str_sampler_1d_shadow      [] = "sampler1DShadow";
  const char str_sampler_2d             [] = "sampler2D";
  const char str_sampler_2d_shadow      [] = "sampler2DShadow";
  const char str_sampler_2d_rect        [] = "sampler2DRect";
  const char str_sampler_2d_rect_shadow [] = "sampler2DRectShadow";
  const char str_sampler_3d             [] = "sampler3D";
  const char str_sampler_3d_rect        [] = "sampler3DRect";
  const char str_sampler_cube           [] = "samplerCube";

  unsigned int var_i::next_id = 0;

  var_i::var_i (const char *typestr)
  : typestr (typestr)
  {
  }

  var_i::~var_i ()
  {
  }

  stream_i::stream_i (const char *strtype)
  : var_i (strtype)
  {
    sprintf (name, "V%d", ++next_id);
  }

  temporary_i::temporary_i (const char *strtype)
  : var_i (strtype)
  {
    sprintf (name, "T%d", ++next_id);
  }

  uniform_i::uniform_i (const char *strtype)
  : var_i (strtype)
  {
    sprintf (name, "U%d", ++next_id);
  }

  fragment_string_i::~fragment_string_i ()
  {
    free (str);
  }

  ////////////////////////////////////////////////////////////////////////////

  void var_i::build_decl (ostringstream &b)
  {
    b << typestr << ' ' << name;
  }

  void uniform_i::build_decl (ostringstream &b)
  {
    b << "uniform " << typestr << ' ' << name;
  }

  void stream_i::build_decl (ostringstream &b)
  {
    b << typestr << ' ' << name;
  }

  ////////////////////////////////////////////////////////////////////////////

  void gluvar_i::build (shader_builder &b)
  {
    b << name;
  }

  void var_i::build (shader_builder &b)
  {
    b << name;
  }

  void uniform_i::build (shader_builder &b)
  {
    var_i::build (b);

    if (find (b.refs.begin (), b.refs.end (), uniform (*this)) == b.refs.end ())
      b.refs.push_back (*this);
  }

  void stream_i::build (shader_builder &b)
  {
    var_i::build (b);

    if (find (b.streams.begin (), b.streams.end (), var (*this)) == b.streams.end ())
      b.streams.push_back (*this);
  }

  void temporary_i::build (shader_builder &b)
  {
    var_i::build (b);

    if (find (b.temps.begin (), b.temps.end (), var (*this)) == b.temps.end ())
      b.temps.push_back (*this);
  }

  void fragment_vector_i::build (shader_builder &b)
  {
    for (vector<fragment>::iterator i = begin (); i != end (); i++)
      (*i)->build (b);
  }

  void fragment_const_string_i::build (shader_builder &b)
  {
    b << str;
  }

  void fragment_string_i::build (shader_builder &b)
  {
    b << str;
  }

#if 0
  void statement_i::build (shader_builder &b)
  {
    b << "  ";
    fragment_vector_i::build (b);
    b << ";\n";
  }
#endif

  ////////////////////////////////////////////////////////////////////////////

  int texture_units::unit_count = 8;
  int texture_units::units[8] = { 7, 6, 5, 4, 3, 2, 1, 0 };

  shader_object_i *cur = 0;

  shader_object_i::shader_object_i (GLenum type)
  : type (type)
  {
    id = glCreateShaderObjectARB (type);
    assert (id);
  }

  shader_object_i::~shader_object_i ()
  {
    glDeleteObjectARB (id);
  }

  void shader_object_i::start ()
  {
    clear ();
    cur = this;
  }

  void shader_object_i::stop ()
  {
    cur = 0;
  }

  string shader_object_i::source ()
  {
    shader_builder b;
    build (b);
    ostringstream os;

    for (vector<uniform>::iterator i = b.refs.begin (); i != b.refs.end (); i++)
      {
        (*i)->build_decl (os);
        os << ";\n";
      }

    // not neccessary right now, as GLSL is rich on predefinitions
    for (vector<var>::iterator i = b.streams.begin (); i != b.streams.end (); i++)
      {
        os << "attribute ";
        (*i)->build_decl (os);
        os << ";\n";
      }

    os << "\nvoid main (void)\n{\n";

    for (vector<var>::iterator i = b.temps.begin (); i != b.temps.end (); i++)
      {
        os << "  ";
        (*i)->build_decl (os);
        os << ";\n";
      }

    os << "\n";
    os << b.source.str ();
    os << "}\n";

    return os.str ();
  }

  static string linify (const string &s)
  {
    ostringstream o;

    int b = 0, e;
    int l = 1;
    do {
      o << setw (3) << l << ": ";
      e = s.find ('\n', b);
      if (e == string::npos)
        e = s.size ();

      o << s.substr (b, e - b + 1);
      b = e + 1;
      l++;
    } while (b < s.size ());

    return o.str ();
  }

  void shader_object_i::compile ()
  {
    string src = source ();
    const char *sptr = src.data ();
    const int slen = src.size ();

    printf ("%s\n", linify (src).c_str ());
    glShaderSourceARB (id, 1, &sptr, &slen);
    glCompileShaderARB (id);

    GLint compiled;
    glGetObjectParameterivARB (id, GL_OBJECT_COMPILE_STATUS_ARB, &compiled);

    if (!compiled)
      {
        char infolog[8192];
        glGetInfoLogARB (id, 8192, NULL, infolog);
        printf ("%s\n", linify (src).c_str ());
        printf ("%s\n", infolog);
        abort ();
      }
  }

  ////////////////////////////////////////////////////////////////////////////
  
  program_object *program_object::cur = 0;

  GLint uniform_i::location ()
  {
    assert (program_object::cur);

    GLint &rid = program_object::cur->uloc[this];

    if (!rid)
      rid = glGetUniformLocationARB (program_object::cur->id, name);

    return rid;
  }

  program_object::program_object ()
  {
    id = glCreateProgramObjectARB ();
    assert (id);

    glAttachObjectARB (id, vsh->id);
    glAttachObjectARB (id, fsh->id);
  }

  program_object::~program_object ()
  {
    glDeleteProgramsARB (1, &id);
  }

  void program_object::link ()
  {
    glLinkProgramARB (id);
        
    GLint linked;
    glGetObjectParameterivARB (id, GL_OBJECT_LINK_STATUS_ARB, &linked);

    if (!linked)
      {
        char infolog[8192];
        glGetInfoLogARB (id, 8192, NULL, infolog);
        printf ("LINK-INFOLOG<%s>\n", infolog);
        abort ();
      }

    uloc.clear ();
  }

  void sl_func0::begin () const
  {
    cur->append_string (name_par);
  }

  void sl_func0::comma () const
  {
    cur->append (str_comma);
  }

  void sl_func0::end () const
  {
    str_rpar ();
  }

  void sl_float::operator ()() const
  {
    char s[20];
    sprintf (s, "%g", c);
    cur->append_string (s);
  }

  const sl_convert< ::vec2 >::T sl_convert< ::vec2 >::convert (const ::vec2 &v)
  {
    sl_string<60> s;
    sprintf (s.str, "vec2 (%g, %g)", v.x, v.y);
    return s;
  }

  const sl_convert< ::vec3 >::T sl_convert< ::vec3 >::convert (const ::vec3 &v)
  {
    sl_string<80> s;
    sprintf (s.str, "vec3 (%g, %g, %g)", v.x, v.y, v.z);
    return s;
  }

  const sl_convert< ::vec4 >::T sl_convert< ::vec4 >::convert (const ::vec4 &v)
  {
    sl_string<100> s;
    sprintf (s.str, "vec4 (%g, %g, %g, %g)", v.x, v.y, v.z, v.w);
    return s;
  }

  const fragment_const_string str_2sp    ("  ");
  const fragment_const_string str_equal  (" = ");
  const fragment_const_string str_comma  (", ");
  const fragment_const_string str_endl   (";\n");

  const sl_append_const_string str_plus  (" + "); 
  const sl_append_const_string str_minus (" - "); 
  const sl_append_const_string str_mul   (" * "); 
  const sl_append_const_string str_div   (" / "); 
  const sl_append_const_string str_mod   (" % "); 

  const sl_append_const_string str_lpar  ("(");
  const sl_append_const_string str_rpar  (")");

  void swizzle_mask (sl_string<7> &s, int mask)
  {
    static const char channel[4] = { 'x', 'y', 'z', 'w' };

    char *str = s.str;

    *str++ = ')';
    *str++ = '.';

    while (mask)
      {
        int c = mask % 5;
        mask /= 5;

        if (c)
          *str++ = channel[c - 1];
      }

    *str++ = 0;
  }


  void debdebdebdebug ()//D
  {
    return;

    vertex_shader vsh;

    vsh->start ();

    temp_4f lightpos;
    temp_4f wpos;

    lightpos = vec4 (0, 10, 0, 1);
    wpos = gl.model_view_matrix * vin.vertex;
    vout.position = vin.vertex * gl.model_view_matrix_inverse;
    vout.tex_coord[0] = vin.tex_coord[0];
    vout.tex_coord[1] = normalize (lightpos - wpos);
    vout.tex_coord[2] = normalize (wpos);
    //vout.tex_coord[3] = normalize (xyz (gl.model_view_matrix_inverse_transpose) * vin.normal);
    //vout.tex_coord[4] = normalize (xyz (gl.projection_matrix_inverse_transpose) - wpos);

    vsh->end ();
    vsh->compile ();

    fragment_shader fsh;

    fsh->start ();

    xyz (fout.frag_color) = noise3 (x (fin.frag_coord) * y (fin.frag_coord));

    temp_1f spec_expon;
    spec_expon = 200;

    fsh->end ();
    fsh->compile ();

    //abort ();
  }

}

Revision:	1.21
Committed:	Fri Oct 29 22:32:49 2004 UTC (19 years, 7 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.20:	+1 -7 lines
Log Message:	* empty log message *
#	Content
1	#include <cassert>
2
3	#include "shader.h"
4	#include "shader_vars.h"
5
6	#include <sstream>
7	#include <iomanip>
8
9	namespace shader {
10
11	using namespace std;
12
13	refcounted::~refcounted ()
14	{
15	if (refcnt)
16	abort ();
17	}
18
19	void refcounted::refcnt_dec () const
20	{
21	if (!--refcnt)
22	delete this; // quite a bit of code...
23	}
24
25	const char str_float [] = "float";
26	const char str_vec2 [] = "vec2";
27	const char str_vec3 [] = "vec3";
28	const char str_vec4 [] = "vec4";
29	const char str_mat2 [] = "mat2";
30	const char str_mat3 [] = "mat3";
31	const char str_mat4 [] = "mat4";
32
33	const char str_sampler_1d [] = "sampler1D";
34	const char str_sampler_1d_shadow [] = "sampler1DShadow";
35	const char str_sampler_2d [] = "sampler2D";
36	const char str_sampler_2d_shadow [] = "sampler2DShadow";
37	const char str_sampler_2d_rect [] = "sampler2DRect";
38	const char str_sampler_2d_rect_shadow [] = "sampler2DRectShadow";
39	const char str_sampler_3d [] = "sampler3D";
40	const char str_sampler_3d_rect [] = "sampler3DRect";
41	const char str_sampler_cube [] = "samplerCube";
42
43	unsigned int var_i::next_id = 0;
44
45	var_i::var_i (const char *typestr)
46	: typestr (typestr)
47	{
48	}
49
50	var_i::~var_i ()
51	{
52	}
53
54	stream_i::stream_i (const char *strtype)
55	: var_i (strtype)
56	{
57	sprintf (name, "V%d", ++next_id);
58	}
59
60	temporary_i::temporary_i (const char *strtype)
61	: var_i (strtype)
62	{
63	sprintf (name, "T%d", ++next_id);
64	}
65
66	uniform_i::uniform_i (const char *strtype)
67	: var_i (strtype)
68	{
69	sprintf (name, "U%d", ++next_id);
70	}
71
72	fragment_string_i::~fragment_string_i ()
73	{
74	free (str);
75	}
76
77	////////////////////////////////////////////////////////////////////////////
78
79	void var_i::build_decl (ostringstream &b)
80	{
81	b << typestr << ' ' << name;
82	}
83
84	void uniform_i::build_decl (ostringstream &b)
85	{
86	b << "uniform " << typestr << ' ' << name;
87	}
88
89	void stream_i::build_decl (ostringstream &b)
90	{
91	b << typestr << ' ' << name;
92	}
93
94	////////////////////////////////////////////////////////////////////////////
95
96	void gluvar_i::build (shader_builder &b)
97	{
98	b << name;
99	}
100
101	void var_i::build (shader_builder &b)
102	{
103	b << name;
104	}
105
106	void uniform_i::build (shader_builder &b)
107	{
108	var_i::build (b);
109
110	if (find (b.refs.begin (), b.refs.end (), uniform (*this)) == b.refs.end ())
111	b.refs.push_back (*this);
112	}
113
114	void stream_i::build (shader_builder &b)
115	{
116	var_i::build (b);
117
118	if (find (b.streams.begin (), b.streams.end (), var (*this)) == b.streams.end ())
119	b.streams.push_back (*this);
120	}
121
122	void temporary_i::build (shader_builder &b)
123	{
124	var_i::build (b);
125
126	if (find (b.temps.begin (), b.temps.end (), var (*this)) == b.temps.end ())
127	b.temps.push_back (*this);
128	}
129
130	void fragment_vector_i::build (shader_builder &b)
131	{
132	for (vector<fragment>::iterator i = begin (); i != end (); i++)
133	(*i)->build (b);
134	}
135
136	void fragment_const_string_i::build (shader_builder &b)
137	{
138	b << str;
139	}
140
141	void fragment_string_i::build (shader_builder &b)
142	{
143	b << str;
144	}
145
146	#if 0
147	void statement_i::build (shader_builder &b)
148	{
149	b << " ";
150	fragment_vector_i::build (b);
151	b << ";\n";
152	}
153	#endif
154
155	////////////////////////////////////////////////////////////////////////////
156
157	int texture_units::unit_count = 8;
158	int texture_units::units[8] = { 7, 6, 5, 4, 3, 2, 1, 0 };
159
160	shader_object_i *cur = 0;
161
162	shader_object_i::shader_object_i (GLenum type)
163	: type (type)
164	{
165	id = glCreateShaderObjectARB (type);
166	assert (id);
167	}
168
169	shader_object_i::~shader_object_i ()
170	{
171	glDeleteObjectARB (id);
172	}
173
174	void shader_object_i::start ()
175	{
176	clear ();
177	cur = this;
178	}
179
180	void shader_object_i::stop ()
181	{
182	cur = 0;
183	}
184
185	string shader_object_i::source ()
186	{
187	shader_builder b;
188	build (b);
189	ostringstream os;
190
191	for (vector<uniform>::iterator i = b.refs.begin (); i != b.refs.end (); i++)
192	{
193	(*i)->build_decl (os);
194	os << ";\n";
195	}
196
197	// not neccessary right now, as GLSL is rich on predefinitions
198	for (vector<var>::iterator i = b.streams.begin (); i != b.streams.end (); i++)
199	{
200	os << "attribute ";
201	(*i)->build_decl (os);
202	os << ";\n";
203	}
204
205	os << "\nvoid main (void)\n{\n";
206
207	for (vector<var>::iterator i = b.temps.begin (); i != b.temps.end (); i++)
208	{
209	os << " ";
210	(*i)->build_decl (os);
211	os << ";\n";
212	}
213
214	os << "\n";
215	os << b.source.str ();
216	os << "}\n";
217
218	return os.str ();
219	}
220
221	static string linify (const string &s)
222	{
223	ostringstream o;
224
225	int b = 0, e;
226	int l = 1;
227	do {
228	o << setw (3) << l << ": ";
229	e = s.find ('\n', b);
230	if (e == string::npos)
231	e = s.size ();
232
233	o << s.substr (b, e - b + 1);
234	b = e + 1;
235	l++;
236	} while (b < s.size ());
237
238	return o.str ();
239	}
240
241	void shader_object_i::compile ()
242	{
243	string src = source ();
244	const char *sptr = src.data ();
245	const int slen = src.size ();
246
247	printf ("%s\n", linify (src).c_str ());
248	glShaderSourceARB (id, 1, &sptr, &slen);
249	glCompileShaderARB (id);
250
251	GLint compiled;
252	glGetObjectParameterivARB (id, GL_OBJECT_COMPILE_STATUS_ARB, &compiled);
253
254	if (!compiled)
255	{
256	char infolog[8192];
257	glGetInfoLogARB (id, 8192, NULL, infolog);
258	printf ("%s\n", linify (src).c_str ());
259	printf ("%s\n", infolog);
260	abort ();
261	}
262	}
263
264	////////////////////////////////////////////////////////////////////////////
265
266	program_object *program_object::cur = 0;
267
268	GLint uniform_i::location ()
269	{
270	assert (program_object::cur);
271
272	GLint &rid = program_object::cur->uloc[this];
273
274	if (!rid)
275	rid = glGetUniformLocationARB (program_object::cur->id, name);
276
277	return rid;
278	}
279
280	program_object::program_object ()
281	{
282	id = glCreateProgramObjectARB ();
283	assert (id);
284
285	glAttachObjectARB (id, vsh->id);
286	glAttachObjectARB (id, fsh->id);
287	}
288
289	program_object::~program_object ()
290	{
291	glDeleteProgramsARB (1, &id);
292	}
293
294	void program_object::link ()
295	{
296	glLinkProgramARB (id);
297
298	GLint linked;
299	glGetObjectParameterivARB (id, GL_OBJECT_LINK_STATUS_ARB, &linked);
300
301	if (!linked)
302	{
303	char infolog[8192];
304	glGetInfoLogARB (id, 8192, NULL, infolog);
305	printf ("LINK-INFOLOG<%s>\n", infolog);
306	abort ();
307	}
308
309	uloc.clear ();
310	}
311
312	void sl_func0::begin () const
313	{
314	cur->append_string (name_par);
315	}
316
317	void sl_func0::comma () const
318	{
319	cur->append (str_comma);
320	}
321
322	void sl_func0::end () const
323	{
324	str_rpar ();
325	}
326
327	void sl_float::operator ()() const
328	{
329	char s[20];
330	sprintf (s, "%g", c);
331	cur->append_string (s);
332	}
333
334	const sl_convert< ::vec2 >::T sl_convert< ::vec2 >::convert (const ::vec2 &v)
335	{
336	sl_string<60> s;
337	sprintf (s.str, "vec2 (%g, %g)", v.x, v.y);
338	return s;
339	}
340
341	const sl_convert< ::vec3 >::T sl_convert< ::vec3 >::convert (const ::vec3 &v)
342	{
343	sl_string<80> s;
344	sprintf (s.str, "vec3 (%g, %g, %g)", v.x, v.y, v.z);
345	return s;
346	}
347
348	const sl_convert< ::vec4 >::T sl_convert< ::vec4 >::convert (const ::vec4 &v)
349	{
350	sl_string<100> s;
351	sprintf (s.str, "vec4 (%g, %g, %g, %g)", v.x, v.y, v.z, v.w);
352	return s;
353	}
354
355	const fragment_const_string str_2sp (" ");
356	const fragment_const_string str_equal (" = ");
357	const fragment_const_string str_comma (", ");
358	const fragment_const_string str_endl (";\n");
359
360	const sl_append_const_string str_plus (" + ");
361	const sl_append_const_string str_minus (" - ");
362	const sl_append_const_string str_mul (" * ");
363	const sl_append_const_string str_div (" / ");
364	const sl_append_const_string str_mod (" % ");
365
366	const sl_append_const_string str_lpar ("(");
367	const sl_append_const_string str_rpar (")");
368
369	void swizzle_mask (sl_string<7> &s, int mask)
370	{
371	static const char channel[4] = { 'x', 'y', 'z', 'w' };
372
373	char *str = s.str;
374
375	*str++ = ')';
376	*str++ = '.';
377
378	while (mask)
379	{
380	int c = mask % 5;
381	mask /= 5;
382
383	if (c)
384	*str++ = channel[c - 1];
385	}
386
387	*str++ = 0;
388	}
389
390
391	void debdebdebdebug ()//D
392	{
393	return;
394
395	vertex_shader vsh;
396
397	vsh->start ();
398
399	temp_4f lightpos;
400	temp_4f wpos;
401
402	lightpos = vec4 (0, 10, 0, 1);
403	wpos = gl.model_view_matrix * vin.vertex;
404	vout.position = vin.vertex * gl.model_view_matrix_inverse;
405	vout.tex_coord[0] = vin.tex_coord[0];
406	vout.tex_coord[1] = normalize (lightpos - wpos);
407	vout.tex_coord[2] = normalize (wpos);
408	//vout.tex_coord[3] = normalize (xyz (gl.model_view_matrix_inverse_transpose) * vin.normal);
409	//vout.tex_coord[4] = normalize (xyz (gl.projection_matrix_inverse_transpose) - wpos);
410
411	vsh->end ();
412	vsh->compile ();
413
414	fragment_shader fsh;
415
416	fsh->start ();
417
418	xyz (fout.frag_color) = noise3 (x (fin.frag_coord) * y (fin.frag_coord));
419
420	temp_1f spec_expon;
421	spec_expon = 200;
422
423	fsh->end ();
424	fsh->compile ();
425
426	//abort ();
427	}
428
429	}
430