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)
  {
    //param = cgCreateParameter (cg_context, cgtype);
  }

  var_i::~var_i ()
  {
    //cgDestroyParameter (param);
  }

  stream_i::stream_i (const char *strtype)
  : var_i (strtype)
  {
    sprintf (name, "V%lx_%d", ((long)this >> 4) & 0xfff, ++next_id);
  }

  temporary_i::temporary_i (const char *strtype)
  : var_i (strtype)
  {
    sprintf (name, "T%lx_%d", ((long)this >> 4) & 0xfff, ++next_id);
  }

  uniform_i::uniform_i (const char *strtype)
  : var_i (strtype), dirty (true)
  {
    sprintf (name, "U%lx_%d", ((long)this >> 4) & 0xfff, ++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

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

  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 ()
  {
    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 ();
      }
  }

  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
  {
    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:	1.18
Committed:	Thu Oct 28 17:00:46 2004 UTC (19 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.17:	+6 -8 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	//param = cgCreateParameter (cg_context, cgtype);
49	}
50
51	var_i::~var_i ()
52	{
53	//cgDestroyParameter (param);
54	}
55
56	stream_i::stream_i (const char *strtype)
57	: var_i (strtype)
58	{
59	sprintf (name, "V%lx_%d", ((long)this >> 4) & 0xfff, ++next_id);
60	}
61
62	temporary_i::temporary_i (const char *strtype)
63	: var_i (strtype)
64	{
65	sprintf (name, "T%lx_%d", ((long)this >> 4) & 0xfff, ++next_id);
66	}
67
68	uniform_i::uniform_i (const char *strtype)
69	: var_i (strtype), dirty (true)
70	{
71	sprintf (name, "U%lx_%d", ((long)this >> 4) & 0xfff, ++next_id);
72	}
73
74	fragment_string_i::~fragment_string_i ()
75	{
76	free (str);
77	}
78
79	////////////////////////////////////////////////////////////////////////////
80
81	void var_i::build_decl (ostringstream &b)
82	{
83	b << typestr << ' ' << name;
84	}
85
86	void uniform_i::build_decl (ostringstream &b)
87	{
88	b << "uniform " << typestr << ' ' << name;
89	}
90
91	void stream_i::build_decl (ostringstream &b)
92	{
93	b << typestr << ' ' << name;
94	}
95
96	////////////////////////////////////////////////////////////////////////////
97
98	void gluvar_i::build (shader_builder &b)
99	{
100	b << name;
101	}
102
103	void var_i::build (shader_builder &b)
104	{
105	b << name;
106	}
107
108	void uniform_i::build (shader_builder &b)
109	{
110	var_i::build (b);
111
112	if (find (b.refs.begin (), b.refs.end (), uniform (*this)) == b.refs.end ())
113	b.refs.push_back (*this);
114	}
115
116	void stream_i::build (shader_builder &b)
117	{
118	var_i::build (b);
119
120	if (find (b.streams.begin (), b.streams.end (), var (*this)) == b.streams.end ())
121	b.streams.push_back (*this);
122	}
123
124	void temporary_i::build (shader_builder &b)
125	{
126	var_i::build (b);
127
128	if (find (b.temps.begin (), b.temps.end (), var (*this)) == b.temps.end ())
129	b.temps.push_back (*this);
130	}
131
132	void fragment_vector_i::build (shader_builder &b)
133	{
134	for (vector<fragment>::iterator i = begin (); i != end (); i++)
135	(*i)->build (b);
136	}
137
138	void fragment_const_string_i::build (shader_builder &b)
139	{
140	b << str;
141	}
142
143	void fragment_string_i::build (shader_builder &b)
144	{
145	b << str;
146	}
147
148	#if 0
149	void statement_i::build (shader_builder &b)
150	{
151	b << " ";
152	fragment_vector_i::build (b);
153	b << ";\n";
154	}
155	#endif
156
157	////////////////////////////////////////////////////////////////////////////
158
159	shader_object_i *cur = 0;
160
161	shader_object_i::shader_object_i (GLenum type)
162	: type (type)
163	{
164	id = glCreateShaderObjectARB (type);
165	assert (id);
166	}
167
168	shader_object_i::~shader_object_i ()
169	{
170	glDeleteObjectARB (id);
171	}
172
173	void shader_object_i::start ()
174	{
175	clear ();
176	cur = this;
177	}
178
179	void shader_object_i::stop ()
180	{
181	cur = 0;
182	}
183
184	string shader_object_i::source ()
185	{
186	shader_builder b;
187	build (b);
188	ostringstream os;
189
190	for (vector<uniform>::iterator i = b.refs.begin (); i != b.refs.end (); i++)
191	{
192	(*i)->build_decl (os);
193	os << ";\n";
194	}
195
196	// not neccessary right now, as GLSL is rich on predefinitions
197	for (vector<var>::iterator i = b.streams.begin (); i != b.streams.end (); i++)
198	{
199	os << "attribute ";
200	(*i)->build_decl (os);
201	os << ";\n";
202	}
203
204	os << "\nvoid main (void)\n{\n";
205
206	for (vector<var>::iterator i = b.temps.begin (); i != b.temps.end (); i++)
207	{
208	os << " ";
209	(*i)->build_decl (os);
210	os << ";\n";
211	}
212
213	os << "\n";
214	os << b.source.str ();
215	os << "}\n";
216
217	return os.str ();
218	}
219
220	static string linify (const string &s)
221	{
222	ostringstream o;
223
224	int b = 0, e;
225	int l = 1;
226	do {
227	o << setw (3) << l << ": ";
228	e = s.find ('\n', b);
229	if (e == string::npos)
230	e = s.size ();
231
232	o << s.substr (b, e - b + 1);
233	b = e + 1;
234	l++;
235	} while (b < s.size ());
236
237	return o.str ();
238	}
239
240	void shader_object_i::compile ()
241	{
242	string src = source ();
243	const char *sptr = src.data ();
244	const int slen = src.size ();
245
246	printf ("%s\n", linify (src).c_str ());
247	glShaderSourceARB (id, 1, &sptr, &slen);
248	glCompileShaderARB (id);
249
250	GLint compiled;
251	glGetObjectParameterivARB (id, GL_OBJECT_COMPILE_STATUS_ARB, &compiled);
252
253	if (!compiled)
254	{
255	char infolog[8192];
256	glGetInfoLogARB (id, 8192, NULL, infolog);
257	printf ("%s\n", linify (src).c_str ());
258	printf ("%s\n", infolog);
259	abort ();
260	}
261	}
262
263	program_object::program_object ()
264	{
265	id = glCreateProgramObjectARB ();
266	assert (id);
267
268	glAttachObjectARB (id, vsh->id);
269	glAttachObjectARB (id, fsh->id);
270	}
271
272	program_object::~program_object ()
273	{
274	glDeleteProgramsARB (1, &id);
275	}
276
277	void program_object::link ()
278	{
279	glLinkProgramARB (id);
280
281	GLint linked;
282	glGetObjectParameterivARB (id, GL_OBJECT_LINK_STATUS_ARB, &linked);
283
284	if (!linked)
285	{
286	char infolog[8192];
287	glGetInfoLogARB (id, 8192, NULL, infolog);
288	printf ("LINK-INFOLOG<%s>\n", infolog);
289	abort ();
290	}
291	}
292
293	void sl_func0::begin () const
294	{
295	cur->append_string (name_par);
296	}
297
298	void sl_func0::comma () const
299	{
300	cur->append (str_comma);
301	}
302
303	void sl_func0::end () const
304	{
305	str_rpar ();
306	}
307
308	void sl_float::operator ()() const
309	{
310	char s[20];
311	sprintf (s, "%g", c);
312	cur->append_string (s);
313	}
314
315	const sl_convert< ::vec2 >::T sl_convert< ::vec2 >::convert (const ::vec2 &v)
316	{
317	sl_string<60> s;
318	sprintf (s.str, "vec2 (%g, %g)", v.x, v.y);
319	return s;
320	}
321
322	const sl_convert< ::vec3 >::T sl_convert< ::vec3 >::convert (const ::vec3 &v)
323	{
324	sl_string<80> s;
325	sprintf (s.str, "vec3 (%g, %g, %g)", v.x, v.y, v.z);
326	return s;
327	}
328
329	const sl_convert< ::vec4 >::T sl_convert< ::vec4 >::convert (const ::vec4 &v)
330	{
331	sl_string<100> s;
332	sprintf (s.str, "vec4 (%g, %g, %g, %g)", v.x, v.y, v.z, v.w);
333	return s;
334	}
335
336	const fragment_const_string str_2sp (" ");
337	const fragment_const_string str_equal (" = ");
338	const fragment_const_string str_comma (", ");
339	const fragment_const_string str_endl (";\n");
340
341	const sl_append_const_string str_plus (" + ");
342	const sl_append_const_string str_minus (" - ");
343	const sl_append_const_string str_mul (" * ");
344	const sl_append_const_string str_div (" / ");
345	const sl_append_const_string str_mod (" % ");
346
347	const sl_append_const_string str_lpar ("(");
348	const sl_append_const_string str_rpar (")");
349
350	void swizzle_mask (sl_string<7> &s, int mask)
351	{
352	static const char channel[4] = { 'x', 'y', 'z', 'w' };
353
354	char *str = s.str;
355
356	*str++ = ')';
357	*str++ = '.';
358
359	while (mask)
360	{
361	int c = mask % 5;
362	mask /= 5;
363
364	if (c)
365	*str++ = channel[c - 1];
366	}
367
368	*str++ = 0;
369	}
370
371
372	void debdebdebdebug ()//D
373	{
374	vertex_shader vsh;
375
376	vsh->start ();
377
378	temp_4f lightpos;
379	temp_4f wpos;
380
381	lightpos = vec4 (0, 10, 0, 1);
382	wpos = gl.model_view_matrix * vin.vertex;
383	vout.position = vin.vertex * gl.model_view_matrix_inverse;
384	vout.tex_coord[0] = vin.tex_coord[0];
385	vout.tex_coord[1] = normalize (lightpos - wpos);
386	vout.tex_coord[2] = normalize (wpos);
387	//vout.tex_coord[3] = normalize (xyz (gl.model_view_matrix_inverse_transpose) * vin.normal);
388	//vout.tex_coord[4] = normalize (xyz (gl.projection_matrix_inverse_transpose) - wpos);
389
390	vsh->end ();
391	vsh->compile ();
392
393	fragment_shader fsh;
394
395	fsh->start ();
396
397	xyz (fout.frag_color) = noise3 (x (fin.frag_coord) * y (fin.frag_coord));
398
399	temp_1f spec_expon;
400	spec_expon = 200;
401
402	fsh->end ();
403	fsh->compile ();
404
405	//abort ();
406	}
407
408	}
409