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Comparing cvsroot/libgender/material.C (file contents):
Revision 1.14 by root, Sat Oct 23 21:43:27 2004 UTC vs.
Revision 1.36 by root, Thu Nov 4 04:49:04 2004 UTC

… …
3 3
4#include <algorithm> 4#include <algorithm>
5 5
6#include "opengl.h" 6#include "opengl.h"
7#include "material.h" 7#include "material.h"
8#include "view.h"
8#include "util.h" 9#include "util.h"
9 10
10material::~material () 11material::~material ()
11{ 12{
12} 13}
13 14
14void
15simple_material::begin ()
16{
17 glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *) & diffuse);
18 glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *) & specular);
19 glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *) & emission);
20 glMaterialf (GL_FRONT, GL_SHININESS, shininess);
21}
22
23void
24simple_material::end ()
25{
26}
27
28void
29osama_material::begin ()
30{
31 cgGLEnableProfile (vsh_profile);
32 cgGLEnableProfile (fsh_profile);
33 cgGLEnableTextureParameter (g_Texture);
34}
35
36void
37osama_material::end ()
38{
39 cgGLDisableTextureParameter (g_Texture);
40 // cgGLUnbindProgram (vsh_profile);
41 // cgGLUnbindProgram (fsh_profile);
42 cgGLDisableProfile (vsh_profile);
43 cgGLDisableProfile (fsh_profile);
44}
45
46GLuint 15GLuint
47texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord) 16texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord)
48{ 17{
49 GLuint textur; 18 GLuint name;
50 int w, h;
51 SDL_Surface *image; 19 SDL_Surface *image;
52 SDL_Rect area; 20 SDL_Rect area;
53 Uint32 saved_flags; 21 Uint32 saved_flags;
54 Uint8 saved_alpha; 22 Uint8 saved_alpha;
55 23
56 /* Use the surface width and height expanded to powers of 2 */ 24 /* Use the surface width and height expanded to powers of 2 */
57 //w = power_of_two (surface->w);
58 //h = power_of_two (surface->h);
59 w = power_of_two (surface->w);
60 h = power_of_two (surface->h);
61 tex2oord[0] = 0.0f; /* Min X */ 25 tex2oord[0] = 0.F; /* Min X */
62 tex2oord[1] = 0.0f; /* Min Y */ 26 tex2oord[1] = 0.F; /* Min Y */
63 tex2oord[2] = (GLfloat) surface->w / w; /* Max X */ 27 tex2oord[2] = 1.F; /* Max X */
64 tex2oord[3] = (GLfloat) surface->h / h; /* Max Y */ 28 tex2oord[3] = 1.F; /* Max Y */
65 29
66 image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32, 30 image = SDL_CreateRGBSurface (SDL_SWSURFACE, surface->w, surface->h, 32,
67#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ 31#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */
68 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 32 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
69#else 33#else
70 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF 34 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
71#endif 35#endif
… …
90 /* Restore the alpha blending attributes */ 54 /* Restore the alpha blending attributes */
91 if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA) 55 if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
92 SDL_SetAlpha (surface, saved_flags, saved_alpha); 56 SDL_SetAlpha (surface, saved_flags, saved_alpha);
93 57
94 /* Create an OpenGL texture for the image */ 58 /* Create an OpenGL texture for the image */
95 glGenTextures (1, &textur); 59 glGenTextures (1, &name);
96 glBindTexture (GL_TEXTURE_2D, textur); 60 glBindTexture (GL_TEXTURE_2D, name);
97 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 61 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
98 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); 62 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
99 glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS, GL_TRUE); // GENERATE_MIPMAP_SGIS 63 glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
100 glTexImage2D (GL_TEXTURE_2D, 64 glTexImage2D (GL_TEXTURE_2D,
101 0, 65 0,
102 GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels); 66 GL_RGBA, surface->w, surface->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
103 SDL_FreeSurface (image); /* No longer needed */ 67 SDL_FreeSurface (image); /* No longer needed */
104 68
105 return textur; 69 return name;
106} 70}
107 71
108CGcontext cgc; 72void material::enable (view &ctx)
73{
74 pass::matmap_t &matmap = ctx.pass_data->matmap;
109 75
110void 76 pass::matmap_t::iterator i = matmap.find (this);
111init_shaders () 77 shader::program_object *p;
112{ 78
113 cgc = cgCreateContext (); 79 if (i == matmap.end ())
80 {
81 shader::program_object po;
82
83 shader::shader_builder::start ();
84 vsh (ctx);
85
86 if (ctx.pass_data->l)
87 ctx.pass_data->l->vsh ();
88
89 po->vsh->compile (shader::shader_builder::stop ());
90
91 shader::shader_builder::start ();
92 shader::compile::fout.frag_color = shader::compile::float4 (1., 1., 0., 1.);
93 fsh (ctx);
94 po->fsh->compile (shader::shader_builder::stop ());
95
96 po->link ();
97
98 matmap.insert (pass::matmap_t::value_type (this, po));
99
100 p = &po;
101 }
102 else
103 p = &i->second;
104
105 (*p)->enable ();
114} 106}
115 107
108void material::disable (view &ctx)
109{
110}
111
112test_material::test_material ()
113//: tex ("textures/osama.jpg"), texvar (tex.name)
114: tex ("textures/rockwall.jpg"), texvar (tex.name)
115, norm ("textures/rockwall_normal.jpg"), normvar (norm.name)
116{
117}
118
119static shader::varying_3f normal, lightvec;
120static shader::varying_2f texcoord;
121
122void test_material::vsh (view &ctx)
123{
124 using namespace shader::compile;
125
126 std_vsh ();
127
128 if (ctx.pass_data->l)
129 {
130 texcoord = xy (vin.tex_coord[0]);
131 normal = normal_matrix * vin.normal;
132 lightvec = xyz (ctx.pass_data->l->lightpos - model_view_matrix * vin.vertex);
133 }
134}
135
136void test_material::fsh (view &ctx)
137{
138 using namespace shader::compile;
139
140 if (ctx.pass_data->l)
141 {
142 temp_3f lc;
143 temp_1f fac;
144
145 lc = (*ctx.pass_data->l)();
146
147 temp_3f rot1, rot2, rot3;
148
149 rot1 = yxz (texture_2d (normvar, texcoord) * 2.F - 1.F);
150 rot2 = float3 (x(rot1), z(rot1), -y(rot1));
151 rot3 = float3 (y(rot1), -x(rot1), z(rot1));
152
153 normal = mat3 (rot1, rot2, rot3) * normal;
154
155 fac = dot (normalize (normal), normalize (lightvec));
156 fac = pow (max (fac, 0.0), 6);
157 xyz (fout.frag_color) = (texture_2d (texvar, texcoord) + 0.2F) * lc * fac;
158 }
159}
160
161void test_material::enable (view &ctx)
162{
163 material::enable (ctx);
164 texvar->enable ();
165 normvar->enable ();
166}
167
168void test_material::disable (view &ctx)
169{
170 normvar->disable ();
171 texvar->disable ();
172 material::disable (ctx);
173}
174
175test_material *testmat;
176

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