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%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;
  GLenum texture_units::units[8] =
    {
      GL_TEXTURE7, GL_TEXTURE6, GL_TEXTURE5, GL_TEXTURE4,
      GL_TEXTURE3, GL_TEXTURE2, GL_TEXTURE1, GL_TEXTURE0,
    };

  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:	1.20
Committed:	Fri Oct 29 15:58:50 2004 UTC (19 years, 7 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.19:	+9 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.12	#include <cassert>
2
3	root	1.1	#include "shader.h"
4			#include "shader_vars.h"
5
6	root	1.17	#include <sstream>
7			#include <iomanip>
8
9	root	1.18	namespace shader {
10	root	1.17
11	root	1.18	using namespace std;
12	root	1.1
13			refcounted::~refcounted ()
14			{
15			if (refcnt)
16			abort ();
17			}
18
19	root	1.6	void refcounted::refcnt_dec () const
20			{
21			if (!--refcnt)
22			delete this; // quite a bit of code...
23			}
24
25	root	1.1	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	root	1.4	stream_i::stream_i (const char *strtype)
57			: var_i (strtype)
58			{
59	root	1.19	sprintf (name, "V%d", ++next_id);
60	root	1.4	}
61
62	root	1.1	temporary_i::temporary_i (const char *strtype)
63			: var_i (strtype)
64			{
65	root	1.19	sprintf (name, "T%d", ++next_id);
66	root	1.1	}
67
68			uniform_i::uniform_i (const char *strtype)
69	root	1.19	: var_i (strtype)
70	root	1.1	{
71	root	1.19	sprintf (name, "U%d", ++next_id);
72	root	1.1	}
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	root	1.16	void gluvar_i::build (shader_builder &b)
99	root	1.1	{
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	root	1.20	int texture_units::unit_count = 8;
160			GLenum texture_units::units[8] =
161			{
162			GL_TEXTURE7, GL_TEXTURE6, GL_TEXTURE5, GL_TEXTURE4,
163			GL_TEXTURE3, GL_TEXTURE2, GL_TEXTURE1, GL_TEXTURE0,
164			};
165
166	root	1.1	shader_object_i *cur = 0;
167
168			shader_object_i::shader_object_i (GLenum type)
169			: type (type)
170			{
171			id = glCreateShaderObjectARB (type);
172	root	1.12	assert (id);
173	root	1.1	}
174
175			shader_object_i::~shader_object_i ()
176			{
177			glDeleteObjectARB (id);
178			}
179
180			void shader_object_i::start ()
181			{
182			clear ();
183			cur = this;
184			}
185
186			void shader_object_i::stop ()
187			{
188			cur = 0;
189			}
190
191			string shader_object_i::source ()
192			{
193			shader_builder b;
194			build (b);
195			ostringstream os;
196
197			for (vector<uniform>::iterator i = b.refs.begin (); i != b.refs.end (); i++)
198			{
199			(*i)->build_decl (os);
200			os << ";\n";
201			}
202
203			// not neccessary right now, as GLSL is rich on predefinitions
204			for (vector<var>::iterator i = b.streams.begin (); i != b.streams.end (); i++)
205			{
206			os << "attribute ";
207			(*i)->build_decl (os);
208			os << ";\n";
209			}
210
211			os << "\nvoid main (void)\n{\n";
212
213			for (vector<var>::iterator i = b.temps.begin (); i != b.temps.end (); i++)
214			{
215			os << " ";
216			(*i)->build_decl (os);
217			os << ";\n";
218			}
219
220			os << "\n";
221			os << b.source.str ();
222			os << "}\n";
223
224			return os.str ();
225			}
226
227	root	1.17	static string linify (const string &s)
228			{
229			ostringstream o;
230
231			int b = 0, e;
232			int l = 1;
233			do {
234			o << setw (3) << l << ": ";
235			e = s.find ('\n', b);
236			if (e == string::npos)
237			e = s.size ();
238
239			o << s.substr (b, e - b + 1);
240			b = e + 1;
241			l++;
242			} while (b < s.size ());
243
244			return o.str ();
245			}
246
247	root	1.1	void shader_object_i::compile ()
248			{
249			string src = source ();
250			const char *sptr = src.data ();
251			const int slen = src.size ();
252
253	root	1.17	printf ("%s\n", linify (src).c_str ());
254	root	1.1	glShaderSourceARB (id, 1, &sptr, &slen);
255			glCompileShaderARB (id);
256
257			GLint compiled;
258			glGetObjectParameterivARB (id, GL_OBJECT_COMPILE_STATUS_ARB, &compiled);
259
260			if (!compiled)
261			{
262			char infolog[8192];
263			glGetInfoLogARB (id, 8192, NULL, infolog);
264	root	1.17	printf ("%s\n", linify (src).c_str ());
265			printf ("%s\n", infolog);
266	root	1.12	abort ();
267			}
268			}
269
270	root	1.19	////////////////////////////////////////////////////////////////////////////
271
272			program_object *program_object::cur = 0;
273
274			GLint uniform_i::location ()
275			{
276			assert (program_object::cur);
277
278			GLint &rid = program_object::cur->uloc[this];
279
280			if (!rid)
281			rid = glGetUniformLocationARB (program_object::cur->id, name);
282
283			return rid;
284			}
285
286	root	1.12	program_object::program_object ()
287			{
288			id = glCreateProgramObjectARB ();
289			assert (id);
290	root	1.15
291			glAttachObjectARB (id, vsh->id);
292			glAttachObjectARB (id, fsh->id);
293	root	1.12	}
294
295			program_object::~program_object ()
296			{
297			glDeleteProgramsARB (1, &id);
298			}
299
300			void program_object::link ()
301			{
302			glLinkProgramARB (id);
303
304			GLint linked;
305			glGetObjectParameterivARB (id, GL_OBJECT_LINK_STATUS_ARB, &linked);
306
307			if (!linked)
308			{
309			char infolog[8192];
310			glGetInfoLogARB (id, 8192, NULL, infolog);
311			printf ("LINK-INFOLOG<%s>\n", infolog);
312	root	1.1	abort ();
313			}
314	root	1.19
315			uloc.clear ();
316	root	1.1	}
317
318	root	1.7	void sl_func0::begin () const
319			{
320			cur->append_string (name_par);
321			}
322
323	root	1.8	void sl_func0::comma () const
324			{
325			cur->append (str_comma);
326			}
327
328	root	1.7	void sl_func0::end () const
329			{
330			str_rpar ();
331			}
332
333	root	1.6	void sl_float::operator ()() const
334			{
335			char s[20];
336			sprintf (s, "%g", c);
337			cur->append_string (s);
338			}
339
340	root	1.9	const sl_convert< ::vec2 >::T sl_convert< ::vec2 >::convert (const ::vec2 &v)
341	root	1.6	{
342			sl_string<60> s;
343			sprintf (s.str, "vec2 (%g, %g)", v.x, v.y);
344			return s;
345			}
346
347	root	1.9	const sl_convert< ::vec3 >::T sl_convert< ::vec3 >::convert (const ::vec3 &v)
348	root	1.6	{
349			sl_string<80> s;
350			sprintf (s.str, "vec3 (%g, %g, %g)", v.x, v.y, v.z);
351			return s;
352			}
353
354	root	1.9	const sl_convert< ::vec4 >::T sl_convert< ::vec4 >::convert (const ::vec4 &v)
355	root	1.6	{
356			sl_string<100> s;
357			sprintf (s.str, "vec4 (%g, %g, %g, %g)", v.x, v.y, v.z, v.w);
358			return s;
359			}
360
361	root	1.5	const fragment_const_string str_2sp (" ");
362			const fragment_const_string str_equal (" = ");
363	root	1.8	const fragment_const_string str_comma (", ");
364	root	1.5	const fragment_const_string str_endl (";\n");
365
366	root	1.1	const sl_append_const_string str_plus (" + ");
367			const sl_append_const_string str_minus (" - ");
368			const sl_append_const_string str_mul (" * ");
369			const sl_append_const_string str_div (" / ");
370	root	1.9	const sl_append_const_string str_mod (" % ");
371	root	1.1
372	root	1.5	const sl_append_const_string str_lpar ("(");
373	root	1.1	const sl_append_const_string str_rpar (")");
374
375	root	1.5	void swizzle_mask (sl_string<7> &s, int mask)
376			{
377			static const char channel[4] = { 'x', 'y', 'z', 'w' };
378
379			char *str = s.str;
380
381			*str++ = ')';
382			*str++ = '.';
383
384			while (mask)
385			{
386			int c = mask % 5;
387			mask /= 5;
388
389			if (c)
390			*str++ = channel[c - 1];
391			}
392
393			*str++ = 0;
394			}
395
396	root	1.7
397	root	1.1	void debdebdebdebug ()//D
398			{
399	root	1.20	return;
400
401	root	1.1	vertex_shader vsh;
402
403			vsh->start ();
404
405			temp_4f lightpos;
406	root	1.18	temp_4f wpos;
407	root	1.1
408	root	1.13	lightpos = vec4 (0, 10, 0, 1);
409	root	1.18	wpos = gl.model_view_matrix * vin.vertex;
410	root	1.17	vout.position = vin.vertex * gl.model_view_matrix_inverse;
411	root	1.7	vout.tex_coord[0] = vin.tex_coord[0];
412	root	1.18	vout.tex_coord[1] = normalize (lightpos - wpos);
413			vout.tex_coord[2] = normalize (wpos);
414	root	1.14	//vout.tex_coord[3] = normalize (xyz (gl.model_view_matrix_inverse_transpose) * vin.normal);
415			//vout.tex_coord[4] = normalize (xyz (gl.projection_matrix_inverse_transpose) - wpos);
416	root	1.1
417			vsh->end ();
418	root	1.13	vsh->compile ();
419	root	1.10
420			fragment_shader fsh;
421
422			fsh->start ();
423
424	root	1.11	xyz (fout.frag_color) = noise3 (x (fin.frag_coord) * y (fin.frag_coord));
425
426	root	1.10	temp_1f spec_expon;
427			spec_expon = 200;
428
429			fsh->end ();
430			fsh->compile ();
431
432	root	1.11	//abort ();
433	root	1.1	}
434
435			}
436