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Comparing cvsroot/libgender/material.C (file contents):
Revision 1.4 by root, Sun Oct 10 20:22:33 2004 UTC vs.
Revision 1.19 by root, Fri Oct 29 23:19:08 2004 UTC

1#include <cstdlib>
2#include <cstring>
3
4#include <algorithm>
5
1#include "opengl.h" 6#include "opengl.h"
2#include "material.h" 7#include "material.h"
8#include "view.h"
9#include "util.h"
3 10
4material::~material () 11material::~material ()
5{ 12{
6} 13}
7 14
8void simple_material::begin () 15void
16simple_material::enable (view &ctx)
9{ 17{
10 glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *)&diffuse); 18 glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *) & diffuse);
11 glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *)&specular); 19 glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *) & specular);
12 glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *)&emission); 20 glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *) & emission);
13 glMaterialf (GL_FRONT, GL_SHININESS, shininess); 21 glMaterialf (GL_FRONT, GL_SHININESS, shininess);
14} 22}
15 23
16void simple_material::end () 24void
25simple_material::disable (view &ctx)
17{ 26{
18} 27}
19void osama_material::begin () 28
29GLuint
30texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord)
20{ 31{
21 cgGLEnableProfile (vsh_profile); 32 GLuint name;
22 cgGLEnableProfile (fsh_profile);
23 cgGLEnableTextureParameter(g_Texture);
24}
25void osama_material::end ()
26{
27 cgGLDisableTextureParameter(g_Texture);
28 // cgGLUnbindProgram (vsh_profile);
29 // cgGLUnbindProgram (fsh_profile);
30 cgGLDisableProfile (vsh_profile);
31 cgGLDisableProfile (fsh_profile);
32}
33
34
35GLuint texture::load_texture (SDL_Surface *surface, GLfloat *texcoord)
36{
37 GLuint textur;
38 int w, h;
39 SDL_Surface *image; 33 SDL_Surface *image;
40 SDL_Rect area; 34 SDL_Rect area;
41 Uint32 saved_flags; 35 Uint32 saved_flags;
42 Uint8 saved_alpha; 36 Uint8 saved_alpha;
43 37
44 /* Use the surface width and height expanded to powers of 2 */ 38 /* Use the surface width and height expanded to powers of 2 */
45 //w = power_of_two (surface->w);
46 //h = power_of_two (surface->h);
47 w = power_of_two (surface->w);
48 h = power_of_two (surface->h);
49 texcoord[0] = 0.0f; /* Min X */ 39 tex2oord[0] = 0.F; /* Min X */
50 texcoord[1] = 0.0f; /* Min Y */ 40 tex2oord[1] = 0.F; /* Min Y */
51 texcoord[2] = (GLfloat) surface->w / w; /* Max X */ 41 tex2oord[2] = 1.F; /* Max X */
52 texcoord[3] = (GLfloat) surface->h / h; /* Max Y */ 42 tex2oord[3] = 1.F; /* Max Y */
53 43
54 image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32, 44 image = SDL_CreateRGBSurface (SDL_SWSURFACE, surface->w, surface->h, 32,
55#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ 45#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */
56 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 46 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
57#else 47#else
58 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF 48 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
59#endif 49#endif
60 ); 50 );
51
61 if (image == NULL) 52 if (image == NULL)
62 {
63 return 0; 53 return 0;
64 }
65 54
66 /* Save the alpha blending attributes */ 55 /* Save the alpha blending attributes */
67 saved_flags = surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); 56 saved_flags = surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK);
68 saved_alpha = surface->format->alpha; 57 saved_alpha = surface->format->alpha;
69 if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA) 58 if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
70 {
71 SDL_SetAlpha (surface, 0, 0); 59 SDL_SetAlpha (surface, 0, 0);
72 }
73 60
74 /* Copy the surface into the GL texture image */ 61 /* Copy the surface into the GL texture image */
75 area.x = 0; 62 area.x = 0;
76 area.y = 0; 63 area.y = 0;
77 area.w = surface->w; 64 area.w = surface->w;
78 area.h = surface->h; 65 area.h = surface->h;
79 SDL_BlitSurface (surface, &area, image, &area); 66 SDL_BlitSurface (surface, &area, image, &area);
80 67
81 /* Restore the alpha blending attributes */ 68 /* Restore the alpha blending attributes */
82 if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA) 69 if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
83 {
84 SDL_SetAlpha (surface, saved_flags, saved_alpha); 70 SDL_SetAlpha (surface, saved_flags, saved_alpha);
85 }
86 71
87 /* Create an OpenGL texture for the image */ 72 /* Create an OpenGL texture for the image */
88 glGenTextures (1, &textur); 73 glGenTextures (1, &name);
89 glBindTexture (GL_TEXTURE_2D, textur); 74 glBindTexture (GL_TEXTURE_2D, name);
90 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 75 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
91 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 76 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
77 glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
92 glTexImage2D (GL_TEXTURE_2D, 78 glTexImage2D (GL_TEXTURE_2D,
93 0, 79 0,
94 GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels); 80 GL_RGBA, surface->w, surface->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
95 SDL_FreeSurface (image); /* No longer needed */ 81 SDL_FreeSurface (image); /* No longer needed */
96 82
97 return textur; 83 return name;
98} 84}
99 85
86test_material::test_material ()
87: tex ("textures/osama.jpg"), texvar (tex.name)
88{
89 using namespace shader;
100 90
101CGcontext cgc; 91 p.vsh->start ();
102void init_shaders () { 92
103 cgc = cgCreateContext (); 93 temp_4f wpos;
94
95 wpos = shader::gl.model_view_projection_matrix * vin.vertex;
96
97 vout.position = wpos;
98 vout.tex_coord[0] = vin.tex_coord[0];
99 vout.tex_coord[1] = shader::gl.model_view_matrix * shader::vec4 (x (vin.normal), y(vin.normal), z(vin.normal), 0);
100
101 p.vsh->end ();
102 p.vsh->compile ();
103
104 p.fsh->start ();
105
106 temp_1f fac;
107
108 fac = max (dot (fin.tex_coord[1], lightpos), 0.0);
109 fac = pow (fac, 3);
110 xyz (fout.frag_color) = texture_2d (texvar, fin.tex_coord[0]) * (fac + 0.3);
111
112 p.fsh->end ();
113 p.fsh->compile ();
114 p.link ();
104} 115}
116
117void test_material::enable (view &ctx)
118{
119 p.enable ();
120 lightpos->set (-ctx.d);
121 texvar->enable ();
122}
123
124void test_material::disable (view &ctx)
125{
126 texvar->disable ();
127 p.disable ();
128}
129

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