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 1.29 by root, Tue Nov 2 02:59:33 2004 UTC vs.
Revision 1.63 by root, Mon Jul 18 01:40:01 2005 UTC

… …
5 5
6#include "opengl.h" 6#include "opengl.h"
7#include "material.h" 7#include "material.h"
8#include "view.h" 8#include "view.h"
9#include "util.h" 9#include "util.h"
10
11material::~material ()
12{
13}
14
15void
16simple_material::enable (view &ctx)
17{
18 glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *) & diffuse);
19 glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *) & specular);
20 glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *) & emission);
21 glMaterialf (GL_FRONT, GL_SHININESS, shininess);
22}
23
24void
25simple_material::disable (view &ctx)
26{
27}
28 10
29GLuint 11GLuint
30texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord) 12texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord)
31{ 13{
32 GLuint name; 14 GLuint name;
… …
73 glGenTextures (1, &name); 55 glGenTextures (1, &name);
74 glBindTexture (GL_TEXTURE_2D, name); 56 glBindTexture (GL_TEXTURE_2D, name);
75 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 57 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
76 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); 58 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
77 glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE); 59 glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
78 glTexImage2D (GL_TEXTURE_2D, 60 glTexImage2D (GL_TEXTURE_2D, 0,
79 0,
80 GL_RGBA, surface->w, surface->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels); 61 GL_RGBA, surface->w, surface->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
81 SDL_FreeSurface (image); /* No longer needed */ 62 SDL_FreeSurface (image); /* No longer needed */
82 63
83 return name; 64 return name;
65}
66
67material::~material ()
68{
69}
70
71void material::enable (view &ctx)
72{
73 pass_data::matmap_t &matmap = ctx.pass->matmap;
74
75 pass_data::matmap_t::iterator i = matmap.find (this);
76
77 if (i == matmap.end ())
78 {
79 string vsh_src, fsh_src;
80
81 shader::shader_builder::start ();
82
83 if (ctx.pass->l)
84 ctx.pass->l->vsh ();
85
86 vsh (ctx);
87
88 // compute logarithmic depth - see the frustum matrix in view.C
89 {
90 using namespace shader::compile;
91
92 temp_1f lz;
93
94 // TODO: negative z is not calculated in an acceptable way, clipping does horrible things(?)
95 lz = z (vout.position);
96#if 0
97 lz = (log (max (lz, 0) + 1) / log (1e30)) - 1;
98#else
99 lz = ifelse (lz <= 0,
100 0,
101 log (lz + 1) / log (1e30)
102 ) - 1;
103#endif
104 z (vout.position) = lz * w (vout.position);
105 }
106
107 vsh_src = shader::shader_builder::stop ();
108
109 shader::shader_builder::start ();
110
111 if (ctx.pass->l)
112 {
113 ctx.pass->l->fsh ();
114 fsh (ctx);
115 }
116 else
117 // many drivers need both vertex and fragment shader, 'caboom!' otherwise
118 shader::compile::fout.frag_color = shader::compile::float4 (0., 0., 0., 0.);
119
120 fsh_src = shader::shader_builder::stop ();
121
122 shader::program_object po = shader::get_program (vsh_src, fsh_src);
123 matmap.insert (pass_data::matmap_t::value_type (this, po));
124
125 po->enable ();
126 }
127 else
128 i->second->enable ();
129
130 if (ctx.pass->l)
131 ctx.pass->l->enable (ctx);
132}
133
134void material::disable (view &ctx)
135{
84} 136}
85 137
86test_material::test_material () 138test_material::test_material ()
87//: tex ("textures/osama.jpg"), texvar (tex.name) 139//: tex ("textures/osama.jpg"), texvar (tex.name)
88: tex ("textures/rockwall.jpg"), texvar (tex.name) 140: tex ("textures/rockwall.jpg"), texvar (tex.name)
89, norm ("textures/rockwall_height.jpg"), normvar (norm.name) 141, norm ("textures/rockwall_normal.jpg"), normvar (norm.name)
90{ 142{
91 using namespace shader::compile; 143}
92 144
93 p.vsh->start (); 145void mat_timed::enable (view &ctx)
146{
147 material::enable (ctx);
94 148
95 temp_4f wpos; 149 time->set (timer::now);
96 varying_1f camdist, zpos; 150 sh_colour->set (vec3 (255, 0, 0) * (1.F / 255.F));
97 varying_2f texcoord; 151}
98 varying_3f lightvec, normal;
99
100 wpos = model_view_matrix * vin.vertex;
101 152
102 temp_1f wz; 153void mat_timed::disable (view &ctx)
103 //wz = log2 (abs (wz)) * sign (wz); 154{
155 material::disable (ctx);
156}
104 157
105 vout.position = projection_matrix * wpos; 158void mat_timed::vsh (view &ctx)
106 texcoord = xy (vin.tex_coord[0]); 159{
160 using namespace shader::compile;
161 std_vsh ();
162
163 if (ctx.pass->l)
107 normal = normal_matrix * vin.normal; 164 f_normal = normal_matrix * vin.normal;
108 lightvec = xyz (lightpos - model_view_matrix * vin.vertex); 165}
109 camdist = 1 - max (length (lightvec) / 10000., 0);
110 166
111 p.vsh->stop (); 167void mat_timed::fsh (view &ctx)
168{
169 using namespace shader::compile;
112 170
113 p.fsh->start (); 171 if (ctx.pass->l)
114 172 {
115 temp_1f fac; 173 temp_1f fac;
116 temp_2f disp;
117 temp_1f dx, dy;
118 temp_1f bumpnormal; 174 temp_3f normal;
119 temp_1f dist;
120 175
176 normal = f_normal + 0.3 * pow (sin (f_normal * 3.14159 + time), 3);
177
121 fac = dot (normalize (normal), normalize (lightvec)); 178 fac = dot (normalize (normal), normalize (ctx.pass->l->sh_lightvec));
122 //fac = dot (shader::compile::vec3 (normalize (fin.tex_coord[1]) + normalize (fin.tex_coord[2])) * 0.5, bumpnormal); 179
123 //fac = dot (bumpnormal, normalize (fin.tex_coord[2])); 180 xyz (fout.frag_color) = fac * float3 (0.1,0.5,1);//ctx.pass->l->sh_colour * sh_colour * fac;
181 }
182}
183
184void mat_gouraud_shaded::enable (view &ctx)
185{
186 material::enable (ctx);
187
188 sh_colour->set (vec3 (c.r, c.g, c.b) * (1.F / 255.F));
189}
190
191void mat_gouraud_shaded::disable (view &ctx)
192{
193 material::disable (ctx);
194}
195
196void mat_gouraud_shaded::vsh (view &ctx)
197{
198 using namespace shader::compile;
199 std_vsh ();
200
201 if (ctx.pass->l)
202 f_normal = normal_matrix * vin.normal;
203}
204
205void mat_gouraud_shaded::fsh (view &ctx)
206{
207 using namespace shader::compile;
208
209 if (ctx.pass->l)
210 {
211 temp_1f fac;
212
213 fac = dot (normalize (f_normal), normalize (ctx.pass->l->sh_lightvec));
214
215 xyz (fout.frag_color) = ctx.pass->l->sh_colour * sh_colour * fac;
216 }
217}
218
219static shader::varying_3f f_normal;
220
221void mat_debug::enable (view &ctx)
222{
223 material::enable (ctx);
224
225 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
226 glEnable (GL_BLEND);
227 glDepthMask (1);
228}
229
230void mat_debug::disable (view &ctx)
231{
232 material::disable (ctx);
233
234 glDisable (GL_BLEND);
235 glDepthMask (0);
236}
237
238void mat_debug::vsh (view &ctx)
239{
240 using namespace shader::compile;
241 std_vsh ();
242
243 if (ctx.pass->l)
244 f_normal = normal_matrix * vin.normal;
245}
246
247void mat_debug::fsh (view &ctx)
248{
249 using namespace shader::compile;
250
251 if (ctx.pass->l)
252 {
253 temp_1f fac;
254
255 fac = dot (normalize (f_normal), normalize (ctx.pass->l->sh_lightvec));
256
257 xyz (fout.frag_color) = float3 (1.,0.,0.);
258 w (fout.frag_color) = 0.1;
259 }
260}
261
262static shader::varying_2f texcoord;
263static shader::varying_3f normal;
264
265void test_material::vsh (view &ctx)
266{
267 using namespace shader::compile;
268
269 std_vsh ();
270
271 if (ctx.pass->l)
272 {
273 texcoord = xy (vin.tex_coord[0]);
274 normal = normal_matrix * vin.normal;
275 }
276}
277
278void test_material::fsh (view &ctx)
279{
280 using namespace shader::compile;
281
282 if (ctx.pass->l)
283 {
284 temp_3f lc;
285 temp_1f fac;
286
287 temp_3f rot1, rot2, rot3;
288
289 yxz (rot1) = (texture_2d (normvar, texcoord) * 2.F - 1.F);
290
291 //rot1 = normal_matrix * rot1;
292
293 rot2 = float3 (x(rot1), z(rot1), -y(rot1));
294 rot3 = float3 (y(rot1), -x(rot1), z(rot1));
295
296 normal = mat3 (rot1, rot2, rot3) * normal;
297
298 fac = dot (normalize (normal), normalize (ctx.pass->l->sh_lightvec));
124 fac = pow (max (fac, 0.0), 2); 299 fac = max (pow (max (fac, 0.0), 6), 0.3);
125 xyz (fout.frag_color) = texture_2d (texvar, texcoord) * (fac + 0.4) * camdist; 300 xyz (fout.frag_color) = (texture_2d (texvar, texcoord) + 0.2F) * fac
126 301 * ctx.pass->l->sh_colour;
127 p.fsh->stop (); 302 //xyz (fout.frag_color) = lc * fac;
128 p.link (); 303 }
129} 304}
130 305
131void test_material::enable (view &ctx) 306void test_material::enable (view &ctx)
132{ 307{
133 p.enable (); 308 material::enable (ctx);
134 lightpos->set (vec3 (0, 0, 0));
135 texvar->enable (); 309 texvar->enable ();
136 normvar->enable (); 310 normvar->enable ();
137} 311}
138 312
139void test_material::disable (view &ctx) 313void test_material::disable (view &ctx)
140{ 314{
141 normvar->disable (); 315 normvar->disable ();
142 texvar->disable (); 316 texvar->disable ();
143 p.disable (); 317 material::disable (ctx);
144} 318}
145 319
320test_material *testmat;
321mat_gouraud_shaded *testmat2;
322mat_timed *testmat3;
323mat_debug *debugmat;
324

Diff Legend

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