libgender/material.C

#include <cstdlib>
#include <cstring>

#include <algorithm>

#include "opengl.h"
#include "material.h"
#include "util.h"

namespace shader {

  refcounted::~refcounted ()
  {
#if 0
    if (refcnt)
      abort ();
#endif
  }

  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 (CGtype cgtype, const char *typestr)
  : typestr (typestr)
  {
    //param = cgCreateParameter (cg_context, cgtype);
  }

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

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

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

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

  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 glvar_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 statement_i::build (shader_builder &b)
  {
    b << "  ";
    fragment_vector_i::build (b);
    b << ";\n";
  }

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

  struct vin vin;

  varying_3f vin::position_3f  ("gl_Vertex");
  varying_4f vin::position_4f  ("gl_Vertex");
  varying_3f vin::normal_3f    ("gl_Normal");
  varying_3f vin::color_3f     ("gl_Color");
  varying_4f vin::color_4f     ("gl_Color");
  varying_3f vin::color2_3f    ("gl_SecondaryColor");
  varying_4f vin::color2_4f    ("gl_SecondaryColor");
  varying_1f vin::texcoord_1f[8] =
    {
      varying_1f ("gl_TexCoord[0]"), varying_1f ("gl_TexCoord[1]"), varying_1f ("gl_TexCoord[2]"), varying_1f ("gl_TexCoord[3]"),
      varying_1f ("gl_TexCoord[4]"), varying_1f ("gl_TexCoord[5]"), varying_1f ("gl_TexCoord[6]"), varying_1f ("gl_TexCoord[7]"),
    };
  varying_2f vin::texcoord_2f[8] =
    {
      varying_2f ("gl_TexCoord[0]"), varying_2f ("gl_TexCoord[1]"), varying_2f ("gl_TexCoord[2]"), varying_2f ("gl_TexCoord[3]"),
      varying_2f ("gl_TexCoord[4]"), varying_2f ("gl_TexCoord[5]"), varying_2f ("gl_TexCoord[6]"), varying_2f ("gl_TexCoord[7]"),
    };
  varying_3f vin::texcoord_3f[8] =
    {
      varying_3f ("gl_TexCoord[0]"), varying_3f ("gl_TexCoord[1]"), varying_3f ("gl_TexCoord[2]"), varying_3f ("gl_TexCoord[3]"),
      varying_3f ("gl_TexCoord[4]"), varying_3f ("gl_TexCoord[5]"), varying_3f ("gl_TexCoord[6]"), varying_3f ("gl_TexCoord[7]"),
    };
  varying_4f vin::texcoord_4f[8] =
    {
      varying_4f ("gl_TexCoord[0]"), varying_4f ("gl_TexCoord[1]"), varying_4f ("gl_TexCoord[2]"), varying_4f ("gl_TexCoord[3]"),
      varying_4f ("gl_TexCoord[4]"), varying_4f ("gl_TexCoord[5]"), varying_4f ("gl_TexCoord[6]"), varying_4f ("gl_TexCoord[7]"),
    };
  varying_1f vin::psize_1f     ("PSIZE");

  glvar vout::position ("gl_Position");
  glvar vout::point_size ("gl_PointSize");
  glvar vout::clip_vertex ("gl_ClipVertex");
  glvar vout::front_color ("gl_FontColor");
  glvar vout::back_color ("gl_BackColor");
  glvar vout::front_secondary_color ("gl_FrontSecondaryColor");
  glvar vout::back_secondary_color ("gl_BackSecondaryColor");
  glvar vout::texcoord[8] =
    {
      glvar ("gl_TexCoord[0]"), glvar ("gl_TexCoord[1]"), glvar ("gl_TexCoord[2]"), glvar ("gl_TexCoord[3]"),
      glvar ("gl_TexCoord[4]"), glvar ("gl_TexCoord[5]"), glvar ("gl_TexCoord[6]"), glvar ("gl_TexCoord[7]"),
    };
  glvar vout::fog_frag_coord ("gl_FogFragCoord");

  glvar fin::frag_coord ("gl_FragCoord");
  glvar fin::color ("gl_Color");
  glvar fin::secondary_color ("gl_SecondaryColor");
  glvar fin::texcoord[8] =
    {
      glvar ("gl_TexCoord[0]"), glvar ("gl_TexCoord[1]"), glvar ("gl_TexCoord[2]"), glvar ("gl_TexCoord[3]"),
      glvar ("gl_TexCoord[4]"), glvar ("gl_TexCoord[5]"), glvar ("gl_TexCoord[6]"), glvar ("gl_TexCoord[7]"),
    };
  glvar fin::fog_frag_coord ("gl_FogFragCoord");

  glvar fout::frag_color ("gl_FragColor");
  glvar fout::frag_depth ("gl_FragDepth");
  glvar fout::frag_data[2] = { glvar ("gl_FragData[0]"), glvar ("gl_FragData[1]") };

#if 0
  varying_4f fin::position_4f  ("gl_Position");
  varying_4f fin::color_4f     ("gl_Color");
  varying_4f fin::color2_4f    ("gl_SecondaryColor");
  varying_4f fin::texcoord_4f[8] =
    {
       varying_4f ("gl_TexCoord[0]"), varying_4f ("gl_TexCoord[1]"), varying_4f ("gl_TexCoord[2]"), varying_4f ("gl_TexCoord[3]"),
       varying_4f ("gl_TexCoord[4]"), varying_4f ("gl_TexCoord[5]"), varying_4f ("gl_TexCoord[6]"), varying_4f ("gl_TexCoord[7]"),
    };
#endif

  struct fout fout;

#if 0
  varying_4f fout::color_4f   ("gl_FragColor");
  varying_1f fout::depth_1f   ("gl_FragDepth");
#endif

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

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

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

  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";
      }

#if 0
    // not neccessary right now, as GLSL is rich on predefinitions
    for (vector<var>::iterator i = b.streams.begin (); i != b.streams.end (); i++)
      {
        if (vout.is (*i) || fout.is (*i))
          os << "varying ";
        else if (vin.is (*i))
          os << "attribute ";

        (*i)->build_decl (os);
        os << ";\n";
      }
#endif

    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 ();
  }

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

        printf ("SOURCE<%s>\n", 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 ("INFOLOG<%s>\n", infolog);
        abort ();
      }
  }

void debdebdebdebug ()//D
{
  fragment_shader p;
  temp_4f t1, t2;
  sampler_2d s2d (1);

  //p << t2 << " = texture2D (" << s2d << ", " << vin.position_4f << ".xy)";
  //p << t1 << " = mul (" << vin.position_4f << "," << mvp << ")";
  p << fout.frag_color << " = vec4(1,1,1,0)";

  p->compile ();
}

}

material::~material ()
{
}

void
simple_material::begin ()
{
  glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *) & diffuse);
  glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *) & specular);
  glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *) & emission);
  glMaterialf (GL_FRONT, GL_SHININESS, shininess);
}

void
simple_material::end ()
{
}

void
osama_material::begin ()
{
  cgGLEnableProfile (vsh_profile);
  cgGLEnableProfile (fsh_profile);
  cgGLEnableTextureParameter (g_Texture);
}

void
osama_material::end ()
{
  cgGLDisableTextureParameter (g_Texture);
  // cgGLUnbindProgram (vsh_profile);
  // cgGLUnbindProgram (fsh_profile);
  cgGLDisableProfile (vsh_profile);
  cgGLDisableProfile (fsh_profile);
}

GLuint
texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord)
{
  GLuint textur;
  int w, h;
  SDL_Surface *image;
  SDL_Rect area;
  Uint32 saved_flags;
  Uint8 saved_alpha;

  /* Use the surface width and height expanded to powers of 2 */
  //w = power_of_two (surface->w);
  //h = power_of_two (surface->h);
  w = power_of_two (surface->w);
  h = power_of_two (surface->h);
  tex2oord[0] = 0.0f;           /* Min X */
  tex2oord[1] = 0.0f;           /* Min Y */
  tex2oord[2] = (GLfloat) surface->w / w;       /* Max X */
  tex2oord[3] = (GLfloat) surface->h / h;       /* Max Y */

  image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32,
#if SDL_BYTEORDER == SDL_LIL_ENDIAN     /* OpenGL RGBA masks */
                                0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
#else
                                0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
#endif
    );

  if (image == NULL)
    return 0;

  /* Save the alpha blending attributes */
  saved_flags = surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK);
  saved_alpha = surface->format->alpha;
  if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
    SDL_SetAlpha (surface, 0, 0);

  /* Copy the surface into the GL texture image */
  area.x = 0;
  area.y = 0;
  area.w = surface->w;
  area.h = surface->h;
  SDL_BlitSurface (surface, &area, image, &area);

  /* Restore the alpha blending attributes */
  if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
    SDL_SetAlpha (surface, saved_flags, saved_alpha);

  /* Create an OpenGL texture for the image */
  glGenTextures (1, &textur);
  glBindTexture (GL_TEXTURE_2D, textur);
  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
  glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS, GL_TRUE); // GENERATE_MIPMAP_SGIS
  glTexImage2D (GL_TEXTURE_2D,
                0,
                GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
  SDL_FreeSurface (image);      /* No longer needed */

  return textur;
}

CGcontext cgc;

void
init_shaders ()
{
  cgc = cgCreateContext ();
}

Revision:	1.13
Committed:	Sat Oct 23 02:27:51 2004 UTC (19 years, 7 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.12:	+125 -78 lines
Log Message:	* empty log message *
#	Content
1	#include <cstdlib>
2	#include <cstring>
3
4	#include <algorithm>
5
6	#include "opengl.h"
7	#include "material.h"
8	#include "util.h"
9
10	namespace shader {
11
12	refcounted::~refcounted ()
13	{
14	#if 0
15	if (refcnt)
16	abort ();
17	#endif
18	}
19
20	const char str_float [] = "float";
21	const char str_vec2 [] = "vec2";
22	const char str_vec3 [] = "vec3";
23	const char str_vec4 [] = "vec4";
24	const char str_mat2 [] = "mat2";
25	const char str_mat3 [] = "mat3";
26	const char str_mat4 [] = "mat4";
27
28	const char str_sampler_1d [] = "sampler1D";
29	const char str_sampler_1d_shadow [] = "sampler1DShadow";
30	const char str_sampler_2d [] = "sampler2D";
31	const char str_sampler_2d_shadow [] = "sampler2DShadow";
32	const char str_sampler_2d_rect [] = "sampler2DRect";
33	const char str_sampler_2d_rect_shadow [] = "sampler2DRectShadow";
34	const char str_sampler_3d [] = "sampler3D";
35	const char str_sampler_3d_rect [] = "sampler3DRect";
36	const char str_sampler_cube [] = "samplerCube";
37
38	unsigned int var_i::next_id = 0;
39
40	var_i::var_i (CGtype cgtype, const char *typestr)
41	: typestr (typestr)
42	{
43	//param = cgCreateParameter (cg_context, cgtype);
44	}
45
46	var_i::~var_i ()
47	{
48	//cgDestroyParameter (param);
49	}
50
51	temporary_i::temporary_i (CGtype cgtype, const char *strtype)
52	: var_i (cgtype, strtype)
53	{
54	sprintf (name, "T%lx_%d", ((long)this >> 4) & 0xfff, ++next_id);
55	}
56
57	uniform_i::uniform_i (CGtype cgtype, const char *strtype)
58	: var_i (cgtype, strtype), dirty (true)
59	{
60	sprintf (name, "U%lx_%d", ((long)this >> 4) & 0xfff, ++next_id);
61	}
62
63	////////////////////////////////////////////////////////////////////////////
64
65	void var_i::build_decl (ostringstream &b)
66	{
67	b << typestr << ' ' << name;
68	}
69
70	void uniform_i::build_decl (ostringstream &b)
71	{
72	b << "uniform " << typestr << ' ' << name;
73	}
74
75	void stream_i::build_decl (ostringstream &b)
76	{
77	b << typestr << ' ' << name;
78	}
79
80	////////////////////////////////////////////////////////////////////////////
81
82	void glvar_i::build (shader_builder &b)
83	{
84	b << name;
85	}
86
87	void var_i::build (shader_builder &b)
88	{
89	b << name;
90	}
91
92	void uniform_i::build (shader_builder &b)
93	{
94	var_i::build (b);
95
96	if (find (b.refs.begin (), b.refs.end (), uniform (*this)) == b.refs.end ())
97	b.refs.push_back (*this);
98	}
99
100	void stream_i::build (shader_builder &b)
101	{
102	var_i::build (b);
103
104	if (find (b.streams.begin (), b.streams.end (), var (*this)) == b.streams.end ())
105	b.streams.push_back (*this);
106	}
107
108	void temporary_i::build (shader_builder &b)
109	{
110	var_i::build (b);
111
112	if (find (b.temps.begin (), b.temps.end (), var (*this)) == b.temps.end ())
113	b.temps.push_back (*this);
114	}
115
116	void fragment_vector_i::build (shader_builder &b)
117	{
118	for (vector<fragment>::iterator i = begin (); i != end (); i++)
119	(*i)->build (b);
120	}
121
122	void fragment_const_string_i::build (shader_builder &b)
123	{
124	b << str;
125	}
126
127	void statement_i::build (shader_builder &b)
128	{
129	b << " ";
130	fragment_vector_i::build (b);
131	b << ";\n";
132	}
133
134	////////////////////////////////////////////////////////////////////////////
135
136	struct vin vin;
137
138	varying_3f vin::position_3f ("gl_Vertex");
139	varying_4f vin::position_4f ("gl_Vertex");
140	varying_3f vin::normal_3f ("gl_Normal");
141	varying_3f vin::color_3f ("gl_Color");
142	varying_4f vin::color_4f ("gl_Color");
143	varying_3f vin::color2_3f ("gl_SecondaryColor");
144	varying_4f vin::color2_4f ("gl_SecondaryColor");
145	varying_1f vin::texcoord_1f[8] =
146	{
147	varying_1f ("gl_TexCoord[0]"), varying_1f ("gl_TexCoord[1]"), varying_1f ("gl_TexCoord[2]"), varying_1f ("gl_TexCoord[3]"),
148	varying_1f ("gl_TexCoord[4]"), varying_1f ("gl_TexCoord[5]"), varying_1f ("gl_TexCoord[6]"), varying_1f ("gl_TexCoord[7]"),
149	};
150	varying_2f vin::texcoord_2f[8] =
151	{
152	varying_2f ("gl_TexCoord[0]"), varying_2f ("gl_TexCoord[1]"), varying_2f ("gl_TexCoord[2]"), varying_2f ("gl_TexCoord[3]"),
153	varying_2f ("gl_TexCoord[4]"), varying_2f ("gl_TexCoord[5]"), varying_2f ("gl_TexCoord[6]"), varying_2f ("gl_TexCoord[7]"),
154	};
155	varying_3f vin::texcoord_3f[8] =
156	{
157	varying_3f ("gl_TexCoord[0]"), varying_3f ("gl_TexCoord[1]"), varying_3f ("gl_TexCoord[2]"), varying_3f ("gl_TexCoord[3]"),
158	varying_3f ("gl_TexCoord[4]"), varying_3f ("gl_TexCoord[5]"), varying_3f ("gl_TexCoord[6]"), varying_3f ("gl_TexCoord[7]"),
159	};
160	varying_4f vin::texcoord_4f[8] =
161	{
162	varying_4f ("gl_TexCoord[0]"), varying_4f ("gl_TexCoord[1]"), varying_4f ("gl_TexCoord[2]"), varying_4f ("gl_TexCoord[3]"),
163	varying_4f ("gl_TexCoord[4]"), varying_4f ("gl_TexCoord[5]"), varying_4f ("gl_TexCoord[6]"), varying_4f ("gl_TexCoord[7]"),
164	};
165	varying_1f vin::psize_1f ("PSIZE");
166
167	glvar vout::position ("gl_Position");
168	glvar vout::point_size ("gl_PointSize");
169	glvar vout::clip_vertex ("gl_ClipVertex");
170	glvar vout::front_color ("gl_FontColor");
171	glvar vout::back_color ("gl_BackColor");
172	glvar vout::front_secondary_color ("gl_FrontSecondaryColor");
173	glvar vout::back_secondary_color ("gl_BackSecondaryColor");
174	glvar vout::texcoord[8] =
175	{
176	glvar ("gl_TexCoord[0]"), glvar ("gl_TexCoord[1]"), glvar ("gl_TexCoord[2]"), glvar ("gl_TexCoord[3]"),
177	glvar ("gl_TexCoord[4]"), glvar ("gl_TexCoord[5]"), glvar ("gl_TexCoord[6]"), glvar ("gl_TexCoord[7]"),
178	};
179	glvar vout::fog_frag_coord ("gl_FogFragCoord");
180
181	glvar fin::frag_coord ("gl_FragCoord");
182	glvar fin::color ("gl_Color");
183	glvar fin::secondary_color ("gl_SecondaryColor");
184	glvar fin::texcoord[8] =
185	{
186	glvar ("gl_TexCoord[0]"), glvar ("gl_TexCoord[1]"), glvar ("gl_TexCoord[2]"), glvar ("gl_TexCoord[3]"),
187	glvar ("gl_TexCoord[4]"), glvar ("gl_TexCoord[5]"), glvar ("gl_TexCoord[6]"), glvar ("gl_TexCoord[7]"),
188	};
189	glvar fin::fog_frag_coord ("gl_FogFragCoord");
190
191	glvar fout::frag_color ("gl_FragColor");
192	glvar fout::frag_depth ("gl_FragDepth");
193	glvar fout::frag_data[2] = { glvar ("gl_FragData[0]"), glvar ("gl_FragData[1]") };
194
195	#if 0
196	varying_4f fin::position_4f ("gl_Position");
197	varying_4f fin::color_4f ("gl_Color");
198	varying_4f fin::color2_4f ("gl_SecondaryColor");
199	varying_4f fin::texcoord_4f[8] =
200	{
201	varying_4f ("gl_TexCoord[0]"), varying_4f ("gl_TexCoord[1]"), varying_4f ("gl_TexCoord[2]"), varying_4f ("gl_TexCoord[3]"),
202	varying_4f ("gl_TexCoord[4]"), varying_4f ("gl_TexCoord[5]"), varying_4f ("gl_TexCoord[6]"), varying_4f ("gl_TexCoord[7]"),
203	};
204	#endif
205
206	struct fout fout;
207
208	#if 0
209	varying_4f fout::color_4f ("gl_FragColor");
210	varying_1f fout::depth_1f ("gl_FragDepth");
211	#endif
212
213	////////////////////////////////////////////////////////////////////////////
214
215	shader_object_i::shader_object_i (GLenum type)
216	: type (type)
217	{
218	id = glCreateShaderObjectARB (type);
219	}
220
221	shader_object_i::~shader_object_i ()
222	{
223	glDeleteObjectARB (id);
224	}
225
226	string shader_object_i::source ()
227	{
228	shader_builder b;
229	build (b);
230	ostringstream os;
231
232	for (vector<uniform>::iterator i = b.refs.begin (); i != b.refs.end (); i++)
233	{
234	(*i)->build_decl (os);
235	os << ";\n";
236	}
237
238	#if 0
239	// not neccessary right now, as GLSL is rich on predefinitions
240	for (vector<var>::iterator i = b.streams.begin (); i != b.streams.end (); i++)
241	{
242	if (vout.is (i) \|\| fout.is (i))
243	os << "varying ";
244	else if (vin.is (*i))
245	os << "attribute ";
246
247	(*i)->build_decl (os);
248	os << ";\n";
249	}
250	#endif
251
252	os << "\nvoid main (void)\n{\n";
253
254	for (vector<var>::iterator i = b.temps.begin (); i != b.temps.end (); i++)
255	{
256	os << " ";
257	(*i)->build_decl (os);
258	os << ";\n";
259	}
260
261	os << "\n";
262	os << b.source.str ();
263	os << "}\n";
264
265	return os.str ();
266	}
267
268	void shader_object_i::compile ()
269	{
270	string src = source ();
271	const char *sptr = src.data ();
272	const int slen = src.size ();
273
274	printf ("SOURCE<%s>\n", src.c_str ());
275
276	glShaderSourceARB (id, 1, &sptr, &slen);
277	glCompileShaderARB (id);
278
279	GLint compiled;
280	glGetObjectParameterivARB (id, GL_OBJECT_COMPILE_STATUS_ARB, &compiled);
281
282	if (!compiled)
283	{
284	char infolog[8192];
285	glGetInfoLogARB (id, 8192, NULL, infolog);
286	printf ("INFOLOG<%s>\n", infolog);
287	abort ();
288	}
289	}
290
291	void debdebdebdebug ()//D
292	{
293	fragment_shader p;
294	temp_4f t1, t2;
295	sampler_2d s2d (1);
296
297	//p << t2 << " = texture2D (" << s2d << ", " << vin.position_4f << ".xy)";
298	//p << t1 << " = mul (" << vin.position_4f << "," << mvp << ")";
299	p << fout.frag_color << " = vec4(1,1,1,0)";
300
301	p->compile ();
302	}
303
304	}
305
306	material::~material ()
307	{
308	}
309
310	void
311	simple_material::begin ()
312	{
313	glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *) & diffuse);
314	glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *) & specular);
315	glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *) & emission);
316	glMaterialf (GL_FRONT, GL_SHININESS, shininess);
317	}
318
319	void
320	simple_material::end ()
321	{
322	}
323
324	void
325	osama_material::begin ()
326	{
327	cgGLEnableProfile (vsh_profile);
328	cgGLEnableProfile (fsh_profile);
329	cgGLEnableTextureParameter (g_Texture);
330	}
331
332	void
333	osama_material::end ()
334	{
335	cgGLDisableTextureParameter (g_Texture);
336	// cgGLUnbindProgram (vsh_profile);
337	// cgGLUnbindProgram (fsh_profile);
338	cgGLDisableProfile (vsh_profile);
339	cgGLDisableProfile (fsh_profile);
340	}
341
342	GLuint
343	texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord)
344	{
345	GLuint textur;
346	int w, h;
347	SDL_Surface *image;
348	SDL_Rect area;
349	Uint32 saved_flags;
350	Uint8 saved_alpha;
351
352	/* Use the surface width and height expanded to powers of 2 */
353	//w = power_of_two (surface->w);
354	//h = power_of_two (surface->h);
355	w = power_of_two (surface->w);
356	h = power_of_two (surface->h);
357	tex2oord[0] = 0.0f; /* Min X */
358	tex2oord[1] = 0.0f; /* Min Y */
359	tex2oord[2] = (GLfloat) surface->w / w; /* Max X */
360	tex2oord[3] = (GLfloat) surface->h / h; /* Max Y */
361
362	image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32,
363	#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */
364	0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
365	#else
366	0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
367	#endif
368	);
369
370	if (image == NULL)
371	return 0;
372
373	/* Save the alpha blending attributes */
374	saved_flags = surface->flags & (SDL_SRCALPHA \| SDL_RLEACCELOK);
375	saved_alpha = surface->format->alpha;
376	if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
377	SDL_SetAlpha (surface, 0, 0);
378
379	/* Copy the surface into the GL texture image */
380	area.x = 0;
381	area.y = 0;
382	area.w = surface->w;
383	area.h = surface->h;
384	SDL_BlitSurface (surface, &area, image, &area);
385
386	/* Restore the alpha blending attributes */
387	if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
388	SDL_SetAlpha (surface, saved_flags, saved_alpha);
389
390	/* Create an OpenGL texture for the image */
391	glGenTextures (1, &textur);
392	glBindTexture (GL_TEXTURE_2D, textur);
393	glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
394	glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
395	glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS, GL_TRUE); // GENERATE_MIPMAP_SGIS
396	glTexImage2D (GL_TEXTURE_2D,
397	0,
398	GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
399	SDL_FreeSurface (image); /* No longer needed */
400
401	return textur;
402	}
403
404	CGcontext cgc;
405
406	void
407	init_shaders ()
408	{
409	cgc = cgCreateContext ();
410	}
411