cvsroot/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 (21 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.12:	+125 -78 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.8	#include <cstdlib>
2			#include <cstring>
3
4	root	1.9	#include <algorithm>
5
6	root	1.13	#include "opengl.h"
7			#include "material.h"
8			#include "util.h"
9
10	root	1.8	namespace shader {
11
12	root	1.9	refcounted::~refcounted ()
13			{
14			#if 0
15			if (refcnt)
16			abort ();
17			#endif
18			}
19
20	root	1.12	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	root	1.11
38	root	1.13	unsigned int var_i::next_id = 0;
39	root	1.8
40	root	1.9	var_i::var_i (CGtype cgtype, const char *typestr)
41			: typestr (typestr)
42	root	1.8	{
43	root	1.13	//param = cgCreateParameter (cg_context, cgtype);
44	root	1.8	}
45
46			var_i::~var_i ()
47			{
48	root	1.13	//cgDestroyParameter (param);
49	root	1.8	}
50
51	root	1.13	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	root	1.9	void var_i::build_decl (ostringstream &b)
66			{
67	root	1.13	b << typestr << ' ' << name;
68	root	1.9	}
69
70			void uniform_i::build_decl (ostringstream &b)
71			{
72	root	1.13	b << "uniform " << typestr << ' ' << name;
73	root	1.9	}
74
75			void stream_i::build_decl (ostringstream &b)
76			{
77	root	1.13	b << typestr << ' ' << name;
78			}
79
80			////////////////////////////////////////////////////////////////////////////
81
82			void glvar_i::build (shader_builder &b)
83			{
84			b << name;
85	root	1.9	}
86
87	root	1.8	void var_i::build (shader_builder &b)
88			{
89	root	1.13	b << name;
90	root	1.8	}
91
92	root	1.9	void uniform_i::build (shader_builder &b)
93	root	1.8	{
94	root	1.9	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	root	1.8	}
99
100	root	1.9	void stream_i::build (shader_builder &b)
101	root	1.8	{
102	root	1.13	var_i::build (b);
103	root	1.9
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	root	1.13	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	root	1.9	void fragment_const_string_i::build (shader_builder &b)
123			{
124			b << str;
125	root	1.8	}
126
127	root	1.13	void statement_i::build (shader_builder &b)
128			{
129			b << " ";
130			fragment_vector_i::build (b);
131			b << ";\n";
132			}
133
134			////////////////////////////////////////////////////////////////////////////
135
136	root	1.9	struct vin vin;
137
138	root	1.12	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	root	1.11	varying_1f vin::texcoord_1f[8] =
146			{
147	root	1.13	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	root	1.11	};
150			varying_2f vin::texcoord_2f[8] =
151			{
152	root	1.13	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	root	1.11	};
155			varying_3f vin::texcoord_3f[8] =
156			{
157	root	1.13	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	root	1.11	};
160			varying_4f vin::texcoord_4f[8] =
161			{
162	root	1.13	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	root	1.11	};
165	root	1.9	varying_1f vin::psize_1f ("PSIZE");
166
167	root	1.13	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	root	1.9
191	root	1.13	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	root	1.9
195	root	1.13	#if 0
196	root	1.12	varying_4f fin::position_4f ("gl_Position");
197			varying_4f fin::color_4f ("gl_Color");
198			varying_4f fin::color2_4f ("gl_SecondaryColor");
199	root	1.11	varying_4f fin::texcoord_4f[8] =
200			{
201	root	1.12	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	root	1.11	};
204	root	1.13	#endif
205	root	1.9
206			struct fout fout;
207
208	root	1.13	#if 0
209	root	1.12	varying_4f fout::color_4f ("gl_FragColor");
210			varying_1f fout::depth_1f ("gl_FragDepth");
211	root	1.13	#endif
212
213			////////////////////////////////////////////////////////////////////////////
214	root	1.9
215	root	1.13	shader_object_i::shader_object_i (GLenum type)
216			: type (type)
217	root	1.9	{
218	root	1.13	id = glCreateShaderObjectARB (type);
219	root	1.9	}
220
221	root	1.13	shader_object_i::~shader_object_i ()
222	root	1.9	{
223	root	1.13	glDeleteObjectARB (id);
224	root	1.9	}
225
226	root	1.13	string shader_object_i::source ()
227	root	1.9	{
228			shader_builder b;
229			build (b);
230			ostringstream os;
231
232	root	1.12	for (vector<uniform>::iterator i = b.refs.begin (); i != b.refs.end (); i++)
233	root	1.9	{
234			(*i)->build_decl (os);
235	root	1.12	os << ";\n";
236	root	1.9	}
237
238	root	1.12	#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	root	1.9	{
242	root	1.12	if (vout.is (i) \|\| fout.is (i))
243			os << "varying ";
244			else if (vin.is (*i))
245			os << "attribute ";
246
247	root	1.9	(*i)->build_decl (os);
248	root	1.12	os << ";\n";
249	root	1.9	}
250	root	1.12	#endif
251	root	1.9
252	root	1.13	os << "\nvoid main (void)\n{\n";
253	root	1.9
254			for (vector<var>::iterator i = b.temps.begin (); i != b.temps.end (); i++)
255			{
256	root	1.13	os << " ";
257	root	1.9	(*i)->build_decl (os);
258			os << ";\n";
259			}
260
261			os << "\n";
262			os << b.source.str ();
263	root	1.13	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	root	1.9
276	root	1.13	glShaderSourceARB (id, 1, &sptr, &slen);
277			glCompileShaderARB (id);
278	root	1.9
279	root	1.13	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	root	1.9	}
290
291			void debdebdebdebug ()//D
292			{
293	root	1.13	fragment_shader p;
294	root	1.11	temp_4f t1, t2;
295	root	1.12	sampler_2d s2d (1);
296	root	1.9
297	root	1.13	//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	root	1.9
301	root	1.13	p->compile ();
302	root	1.9	}
303
304	root	1.8	}
305
306	root	1.1	material::~material ()
307			{
308			}
309
310	root	1.6	void
311			simple_material::begin ()
312	root	1.1	{
313	root	1.6	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	root	1.1	}
318
319	root	1.6	void
320			simple_material::end ()
321	root	1.1	{
322			}
323	root	1.6
324			void
325			osama_material::begin ()
326	root	1.3	{
327			cgGLEnableProfile (vsh_profile);
328			cgGLEnableProfile (fsh_profile);
329	root	1.6	cgGLEnableTextureParameter (g_Texture);
330	root	1.3	}
331	root	1.6
332			void
333			osama_material::end ()
334	root	1.3	{
335	root	1.6	cgGLDisableTextureParameter (g_Texture);
336			// cgGLUnbindProgram (vsh_profile);
337			// cgGLUnbindProgram (fsh_profile);
338	root	1.3	cgGLDisableProfile (vsh_profile);
339			cgGLDisableProfile (fsh_profile);
340			}
341	root	1.1
342	root	1.6	GLuint
343			texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord)
344	root	1.3	{
345	root	1.4	GLuint textur;
346	root	1.3	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	root	1.5	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	root	1.3
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	root	1.6
370	root	1.3	if (image == NULL)
371	root	1.6	return 0;
372	root	1.3
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	root	1.6	SDL_SetAlpha (surface, 0, 0);
378	root	1.3
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	root	1.6	SDL_SetAlpha (surface, saved_flags, saved_alpha);
389	root	1.3
390			/* Create an OpenGL texture for the image */
391	root	1.4	glGenTextures (1, &textur);
392			glBindTexture (GL_TEXTURE_2D, textur);
393	root	1.6	glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
394			glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
395	root	1.7	glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS, GL_TRUE); // GENERATE_MIPMAP_SGIS
396	root	1.3	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	root	1.4	return textur;
402	root	1.3	}
403
404	root	1.6	CGcontext cgc;
405	root	1.3
406	root	1.6	void
407			init_shaders ()
408			{
409	root	1.3	cgc = cgCreateContext ();
410			}
411	root	1.8