libgender/material.C

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

#include <cstdlib>
#include <cstring>

namespace shader {

  static CGcontext cg_context = cgCreateContext ();

  int var_i::next_name = 0;

  var_i::var_i (CGtype cgtype)
  {
    name = ++next_name;
    param = cgCreateParameter (cg_context, cgtype);
  }

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

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

  void var_i::build_decl (shader_builder &b)
  {
    abort ();
  }

  template<int dimension, GLenum gltype, CGtype cgtype>
  varying_i<dimension, gltype, cgtype>::varying_i (const char *binding)
  : var_i (cgtype)
  {
    strcpy (this->binding, binding);
  }

  varying_3f_i position_3f_i  ("POSITION");
  varying_3f_i normal_3f_i    ("NORMAL");
  varying_3f_i color0_3f_i    ("COLOR0");
  varying_3f_i color1_3f_i    ("COLOR1");
  varying_2f_i texcoord0_2f_i ("TEXCOORD0");
  varying_2f_i texcoord1_2f_i ("TEXCOORD1");
  varying_2f_i texcoord2_2f_i ("TEXCOORD2");
  varying_2f_i texcoord3_2f_i ("TEXCOORD3");
  varying_2f_i texcoord4_2f_i ("TEXCOORD4");
  varying_2f_i texcoord5_2f_i ("TEXCOORD5");
  varying_2f_i texcoord6_2f_i ("TEXCOORD6");
  varying_2f_i texcoord7_2f_i ("TEXCOORD7");
  varying_1f_i psize_1f_i    ("PSIZE");
  varying_1f_i attr6_1f_i    ("ATTR6"), attr7_1f_i ("ATTR7");
  varying_2f_i attr6_2f_i    ("ATTR6"), attr7_2f_i ("ATTR7");
  varying_3f_i attr6_3f_i    ("ATTR6"), attr7_3f_i ("ATTR7");
}

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:	1.8
Committed:	Thu Oct 21 15:46:38 2004 UTC (19 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.7:	+56 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#include "opengl.h"
2			#include "material.h"
3
4	root	1.8	#include <cstdlib>
5			#include <cstring>
6
7			namespace shader {
8
9			static CGcontext cg_context = cgCreateContext ();
10
11			int var_i::next_name = 0;
12
13			var_i::var_i (CGtype cgtype)
14			{
15			name = ++next_name;
16			param = cgCreateParameter (cg_context, cgtype);
17			}
18
19			var_i::~var_i ()
20			{
21			cgDestroyParameter (param);
22			}
23
24			void var_i::build (shader_builder &b)
25			{
26			abort ();
27			}
28
29			void var_i::build_decl (shader_builder &b)
30			{
31			abort ();
32			}
33
34			template<int dimension, GLenum gltype, CGtype cgtype>
35			varying_i<dimension, gltype, cgtype>::varying_i (const char *binding)
36			: var_i (cgtype)
37			{
38			strcpy (this->binding, binding);
39			}
40
41			varying_3f_i position_3f_i ("POSITION");
42			varying_3f_i normal_3f_i ("NORMAL");
43			varying_3f_i color0_3f_i ("COLOR0");
44			varying_3f_i color1_3f_i ("COLOR1");
45			varying_2f_i texcoord0_2f_i ("TEXCOORD0");
46			varying_2f_i texcoord1_2f_i ("TEXCOORD1");
47			varying_2f_i texcoord2_2f_i ("TEXCOORD2");
48			varying_2f_i texcoord3_2f_i ("TEXCOORD3");
49			varying_2f_i texcoord4_2f_i ("TEXCOORD4");
50			varying_2f_i texcoord5_2f_i ("TEXCOORD5");
51			varying_2f_i texcoord6_2f_i ("TEXCOORD6");
52			varying_2f_i texcoord7_2f_i ("TEXCOORD7");
53			varying_1f_i psize_1f_i ("PSIZE");
54			varying_1f_i attr6_1f_i ("ATTR6"), attr7_1f_i ("ATTR7");
55			varying_2f_i attr6_2f_i ("ATTR6"), attr7_2f_i ("ATTR7");
56			varying_3f_i attr6_3f_i ("ATTR6"), attr7_3f_i ("ATTR7");
57			}
58
59	root	1.1	material::~material ()
60			{
61			}
62
63	root	1.6	void
64			simple_material::begin ()
65	root	1.1	{
66	root	1.6	glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *) & diffuse);
67			glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *) & specular);
68			glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *) & emission);
69			glMaterialf (GL_FRONT, GL_SHININESS, shininess);
70	root	1.1	}
71
72	root	1.6	void
73			simple_material::end ()
74	root	1.1	{
75			}
76	root	1.6
77			void
78			osama_material::begin ()
79	root	1.3	{
80			cgGLEnableProfile (vsh_profile);
81			cgGLEnableProfile (fsh_profile);
82	root	1.6	cgGLEnableTextureParameter (g_Texture);
83	root	1.3	}
84	root	1.6
85			void
86			osama_material::end ()
87	root	1.3	{
88	root	1.6	cgGLDisableTextureParameter (g_Texture);
89			// cgGLUnbindProgram (vsh_profile);
90			// cgGLUnbindProgram (fsh_profile);
91	root	1.3	cgGLDisableProfile (vsh_profile);
92			cgGLDisableProfile (fsh_profile);
93			}
94	root	1.1
95	root	1.6	GLuint
96			texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord)
97	root	1.3	{
98	root	1.4	GLuint textur;
99	root	1.3	int w, h;
100			SDL_Surface *image;
101			SDL_Rect area;
102			Uint32 saved_flags;
103			Uint8 saved_alpha;
104
105			/* Use the surface width and height expanded to powers of 2 */
106			//w = power_of_two (surface->w);
107			//h = power_of_two (surface->h);
108			w = power_of_two (surface->w);
109			h = power_of_two (surface->h);
110	root	1.5	tex2oord[0] = 0.0f; /* Min X */
111			tex2oord[1] = 0.0f; /* Min Y */
112			tex2oord[2] = (GLfloat) surface->w / w; /* Max X */
113			tex2oord[3] = (GLfloat) surface->h / h; /* Max Y */
114	root	1.3
115			image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32,
116			#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */
117			0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
118			#else
119			0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
120			#endif
121			);
122	root	1.6
123	root	1.3	if (image == NULL)
124	root	1.6	return 0;
125	root	1.3
126			/* Save the alpha blending attributes */
127			saved_flags = surface->flags & (SDL_SRCALPHA \| SDL_RLEACCELOK);
128			saved_alpha = surface->format->alpha;
129			if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
130	root	1.6	SDL_SetAlpha (surface, 0, 0);
131	root	1.3
132			/* Copy the surface into the GL texture image */
133			area.x = 0;
134			area.y = 0;
135			area.w = surface->w;
136			area.h = surface->h;
137			SDL_BlitSurface (surface, &area, image, &area);
138
139			/* Restore the alpha blending attributes */
140			if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
141	root	1.6	SDL_SetAlpha (surface, saved_flags, saved_alpha);
142	root	1.3
143			/* Create an OpenGL texture for the image */
144	root	1.4	glGenTextures (1, &textur);
145			glBindTexture (GL_TEXTURE_2D, textur);
146	root	1.6	glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
147			glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
148	root	1.7	glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS, GL_TRUE); // GENERATE_MIPMAP_SGIS
149	root	1.3	glTexImage2D (GL_TEXTURE_2D,
150			0,
151			GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
152			SDL_FreeSurface (image); /* No longer needed */
153
154	root	1.4	return textur;
155	root	1.3	}
156
157	root	1.6	CGcontext cgc;
158	root	1.3
159	root	1.6	void
160			init_shaders ()
161			{
162	root	1.3	cgc = cgCreateContext ();
163			}
164	root	1.8