ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/cvsroot/libgender/material.C
(Generate patch)

Comparing cvsroot/libgender/material.C (file contents):
Revision 1.3 by root, Sun Oct 10 19:50:37 2004 UTC vs.
Revision 1.18 by root, Fri Oct 29 17:21:54 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 cgGLBindProgram (vsh);
24 cgGLBindProgram (fsh);
25 cgGLEnableTextureParameter(g_Texture);
26}
27void osama_material::end ()
28{
29 cgGLDisableTextureParameter(g_Texture);
30 cgGLUnbindProgram (vsh_profile);
31 cgGLUnbindProgram (fsh_profile);
32 cgGLDisableProfile (vsh_profile);
33 cgGLDisableProfile (fsh_profile);
34}
35
36
37GLuint texture::load_texture (SDL_Surface *surface, GLfloat *texcoord)
38{
39 GLuint texture;
40 int w, h; 33 int w, h;
41 SDL_Surface *image; 34 SDL_Surface *image;
42 SDL_Rect area; 35 SDL_Rect area;
43 Uint32 saved_flags; 36 Uint32 saved_flags;
44 Uint8 saved_alpha; 37 Uint8 saved_alpha;
… …
46 /* Use the surface width and height expanded to powers of 2 */ 39 /* Use the surface width and height expanded to powers of 2 */
47 //w = power_of_two (surface->w); 40 //w = power_of_two (surface->w);
48 //h = power_of_two (surface->h); 41 //h = power_of_two (surface->h);
49 w = power_of_two (surface->w); 42 w = power_of_two (surface->w);
50 h = power_of_two (surface->h); 43 h = power_of_two (surface->h);
51 texcoord[0] = 0.0f; /* Min X */ 44 tex2oord[0] = 0.0f; /* Min X */
52 texcoord[1] = 0.0f; /* Min Y */ 45 tex2oord[1] = 0.0f; /* Min Y */
53 texcoord[2] = (GLfloat) surface->w / w; /* Max X */ 46 tex2oord[2] = (GLfloat) surface->w / w; /* Max X */
54 texcoord[3] = (GLfloat) surface->h / h; /* Max Y */ 47 tex2oord[3] = (GLfloat) surface->h / h; /* Max Y */
55 48
56 image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32, 49 image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32,
57#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ 50#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */
58 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 51 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
59#else 52#else
60 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF 53 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
61#endif 54#endif
62 ); 55 );
56
63 if (image == NULL) 57 if (image == NULL)
64 {
65 return 0; 58 return 0;
66 }
67 59
68 /* Save the alpha blending attributes */ 60 /* Save the alpha blending attributes */
69 saved_flags = surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); 61 saved_flags = surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK);
70 saved_alpha = surface->format->alpha; 62 saved_alpha = surface->format->alpha;
71 if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA) 63 if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
72 {
73 SDL_SetAlpha (surface, 0, 0); 64 SDL_SetAlpha (surface, 0, 0);
74 }
75 65
76 /* Copy the surface into the GL texture image */ 66 /* Copy the surface into the GL texture image */
77 area.x = 0; 67 area.x = 0;
78 area.y = 0; 68 area.y = 0;
79 area.w = surface->w; 69 area.w = surface->w;
80 area.h = surface->h; 70 area.h = surface->h;
81 SDL_BlitSurface (surface, &area, image, &area); 71 SDL_BlitSurface (surface, &area, image, &area);
82 72
83 /* Restore the alpha blending attributes */ 73 /* Restore the alpha blending attributes */
84 if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA) 74 if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
85 {
86 SDL_SetAlpha (surface, saved_flags, saved_alpha); 75 SDL_SetAlpha (surface, saved_flags, saved_alpha);
87 }
88 76
89 /* Create an OpenGL texture for the image */ 77 /* Create an OpenGL texture for the image */
90 glGenTextures (1, &texture); 78 glGenTextures (1, &name);
91 glBindTexture (GL_TEXTURE_2D, texture); 79 glBindTexture (GL_TEXTURE_2D, name);
92 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 80 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
93 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 81 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
82 glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
94 glTexImage2D (GL_TEXTURE_2D, 83 glTexImage2D (GL_TEXTURE_2D,
95 0, 84 0,
96 GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels); 85 GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
97 SDL_FreeSurface (image); /* No longer needed */ 86 SDL_FreeSurface (image); /* No longer needed */
98 87
99 return texture; 88 return name;
100} 89}
101 90
91test_material::test_material ()
92: tex ("textures/osama.jpg"), texvar (tex.name)
93{
94 using namespace shader;
102 95
103CGcontext cgc; 96 p.vsh->start ();
104void init_shaders () { 97
105 cgc = cgCreateContext (); 98 temp_4f wpos;
99
100 wpos = shader::gl.model_view_projection_matrix * vin.vertex;
101
102 vout.position = wpos;
103 vout.tex_coord[0] = vin.tex_coord[0];
104 vout.tex_coord[1] = shader::gl.model_view_matrix * shader::vec4 (x (vin.normal), y(vin.normal), z(vin.normal), 0);
105
106 p.vsh->end ();
107 p.vsh->compile ();
108
109 p.fsh->start ();
110
111 temp_1f fac;
112
113 fac = max (dot (fin.tex_coord[1], lightpos), 0.0);
114 fac = pow (fac, 3);
115 xyz(fout.frag_color) = texture_2d (texvar, fin.tex_coord[0]) * (fac + 0.3);
116
117 p.fsh->end ();
118 p.fsh->compile ();
119 p.link ();
106} 120}
121
122void test_material::enable (view &ctx)
123{
124 p.enable ();
125 lightpos->set (-ctx.d);
126 texvar->enable ();
127}
128
129void test_material::disable (view &ctx)
130{
131 texvar->disable ();
132 p.disable ();
133}
134

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines