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/cvs/cvsroot/libgender/material.C
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Comparing cvsroot/libgender/material.C (file contents):
Revision 1.1 by root, Sun Oct 10 14:15:15 2004 UTC vs.
Revision 1.8 by root, Thu Oct 21 15:46:38 2004 UTC

1#include "opengl.h" 1#include "opengl.h"
2#include "material.h" 2#include "material.h"
3
4#include <cstdlib>
5#include <cstring>
6
7namespace 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}
3 58
4material::~material () 59material::~material ()
5{ 60{
6} 61}
7 62
8void simple_material::push () 63void
64simple_material::begin ()
9{ 65{
10 glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *)&diffuse); 66 glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *) & diffuse);
11 glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *)&specular); 67 glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *) & specular);
12 glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *)&emission); 68 glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *) & emission);
13 glMaterialf (GL_FRONT, GL_SHININESS, shininess); 69 glMaterialf (GL_FRONT, GL_SHININESS, shininess);
14} 70}
15 71
72void
16void simple_material::pop () 73simple_material::end ()
17{ 74{
18} 75}
19 76
77void
78osama_material::begin ()
79{
80 cgGLEnableProfile (vsh_profile);
81 cgGLEnableProfile (fsh_profile);
82 cgGLEnableTextureParameter (g_Texture);
83}
20 84
85void
86osama_material::end ()
87{
88 cgGLDisableTextureParameter (g_Texture);
89 // cgGLUnbindProgram (vsh_profile);
90 // cgGLUnbindProgram (fsh_profile);
91 cgGLDisableProfile (vsh_profile);
92 cgGLDisableProfile (fsh_profile);
93}
94
95GLuint
96texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord)
97{
98 GLuint textur;
99 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 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
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
123 if (image == NULL)
124 return 0;
125
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 SDL_SetAlpha (surface, 0, 0);
131
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 SDL_SetAlpha (surface, saved_flags, saved_alpha);
142
143 /* Create an OpenGL texture for the image */
144 glGenTextures (1, &textur);
145 glBindTexture (GL_TEXTURE_2D, textur);
146 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
147 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
148 glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS, GL_TRUE); // GENERATE_MIPMAP_SGIS
149 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 return textur;
155}
156
157CGcontext cgc;
158
159void
160init_shaders ()
161{
162 cgc = cgCreateContext ();
163}
164

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