… | |
… | |
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 | |
|
|
11 | material::~material () |
|
|
12 | { |
|
|
13 | } |
|
|
14 | |
|
|
15 | void |
|
|
16 | simple_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 | |
|
|
24 | void |
|
|
25 | simple_material::disable (view &ctx) |
|
|
26 | { |
|
|
27 | } |
|
|
28 | |
10 | |
29 | GLuint |
11 | GLuint |
30 | texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord) |
12 | texture::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 | |
|
|
67 | material::~material () |
|
|
68 | { |
|
|
69 | } |
|
|
70 | |
|
|
71 | void 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 | |
|
|
134 | void material::disable (view &ctx) |
|
|
135 | { |
84 | } |
136 | } |
85 | |
137 | |
86 | test_material::test_material () |
138 | test_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 (); |
|
|
94 | |
145 | |
95 | temp_4f wpos; |
146 | void mat_timed::enable (view &ctx) |
96 | varying_1f camdist; |
147 | { |
97 | varying_3f lightvec; |
148 | material::enable (ctx); |
98 | |
|
|
99 | wpos = model_view_projection_matrix * vin.vertex; |
|
|
100 | |
149 | |
101 | //wpos = wpos / abs (w (wpos)); |
150 | time->set ((GLfloat) ((int)timer::now % 100)); |
|
|
151 | sh_colour->set (vec3 (255, 0, 0) * (1.F / 255.F)); |
|
|
152 | } |
102 | |
153 | |
103 | vout.position = wpos; |
154 | void mat_timed::disable (view &ctx) |
104 | vout.tex_coord[0] = vin.tex_coord[0]; |
155 | { |
105 | xyz (vout.tex_coord[1]) = normal_matrix * vin.normal; |
156 | material::disable (ctx); |
106 | lightvec = xyz (lightpos - model_view_matrix * vin.vertex); |
157 | } |
107 | camdist = 1 - max (length (xyz (vout.tex_coord[2])) / 10000., 0); |
|
|
108 | |
158 | |
109 | p.vsh->end (); |
159 | void mat_timed::vsh (view &ctx) |
110 | p.vsh->compile (); |
160 | { |
|
|
161 | using namespace shader::compile; |
|
|
162 | std_vsh (); |
111 | |
163 | |
112 | p.fsh->start (); |
164 | if (ctx.pass->l) |
|
|
165 | f_normal = normal_matrix * vin.normal; |
|
|
166 | } |
113 | |
167 | |
|
|
168 | void mat_timed::fsh (view &ctx) |
|
|
169 | { |
|
|
170 | using namespace shader::compile; |
|
|
171 | |
|
|
172 | if (ctx.pass->l) |
|
|
173 | { |
114 | temp_1f fac; |
174 | temp_1f fac; |
115 | temp_2f disp; |
|
|
116 | temp_1f dx, dy; |
|
|
117 | temp_1f bumpnormal; |
|
|
118 | temp_1f dist; |
|
|
119 | |
175 | |
120 | fac = dot (normalize (xyz (fin.tex_coord[1])), normalize (lightvec)); |
176 | fac = dot (normalize (f_normal), normalize (ctx.pass->l->sh_lightvec)); |
121 | //fac = dot (shader::compile::vec3 (normalize (fin.tex_coord[1]) + normalize (fin.tex_coord[2])) * 0.5, bumpnormal); |
177 | |
122 | //fac = dot (bumpnormal, normalize (fin.tex_coord[2])); |
178 | //fac = (fac / 100) * (mod (time, 100)) ; |
|
|
179 | fac = time; |
|
|
180 | |
|
|
181 | xyz (fout.frag_color) = float3 ((255/100) * fac, fac, fac);//ctx.pass->l->sh_colour * sh_colour * fac; |
|
|
182 | } |
|
|
183 | } |
|
|
184 | |
|
|
185 | void mat_gouraud_shaded::enable (view &ctx) |
|
|
186 | { |
|
|
187 | material::enable (ctx); |
|
|
188 | |
|
|
189 | sh_colour->set (vec3 (c.r, c.g, c.b) * (1.F / 255.F)); |
|
|
190 | } |
|
|
191 | |
|
|
192 | void mat_gouraud_shaded::disable (view &ctx) |
|
|
193 | { |
|
|
194 | material::disable (ctx); |
|
|
195 | } |
|
|
196 | |
|
|
197 | void mat_gouraud_shaded::vsh (view &ctx) |
|
|
198 | { |
|
|
199 | using namespace shader::compile; |
|
|
200 | std_vsh (); |
|
|
201 | |
|
|
202 | if (ctx.pass->l) |
|
|
203 | f_normal = normal_matrix * vin.normal; |
|
|
204 | } |
|
|
205 | |
|
|
206 | void mat_gouraud_shaded::fsh (view &ctx) |
|
|
207 | { |
|
|
208 | using namespace shader::compile; |
|
|
209 | |
|
|
210 | if (ctx.pass->l) |
|
|
211 | { |
|
|
212 | temp_1f fac; |
|
|
213 | |
|
|
214 | fac = dot (normalize (f_normal), normalize (ctx.pass->l->sh_lightvec)); |
|
|
215 | |
|
|
216 | xyz (fout.frag_color) = ctx.pass->l->sh_colour * sh_colour * fac; |
|
|
217 | } |
|
|
218 | } |
|
|
219 | |
|
|
220 | static shader::varying_2f texcoord; |
|
|
221 | static shader::varying_3f normal; |
|
|
222 | |
|
|
223 | void test_material::vsh (view &ctx) |
|
|
224 | { |
|
|
225 | using namespace shader::compile; |
|
|
226 | |
|
|
227 | std_vsh (); |
|
|
228 | |
|
|
229 | if (ctx.pass->l) |
|
|
230 | { |
|
|
231 | texcoord = xy (vin.tex_coord[0]); |
|
|
232 | normal = normal_matrix * vin.normal; |
|
|
233 | } |
|
|
234 | } |
|
|
235 | |
|
|
236 | void test_material::fsh (view &ctx) |
|
|
237 | { |
|
|
238 | using namespace shader::compile; |
|
|
239 | |
|
|
240 | if (ctx.pass->l) |
|
|
241 | { |
|
|
242 | temp_3f lc; |
|
|
243 | temp_1f fac; |
|
|
244 | |
|
|
245 | temp_3f rot1, rot2, rot3; |
|
|
246 | |
|
|
247 | yxz (rot1) = (texture_2d (normvar, texcoord) * 2.F - 1.F); |
|
|
248 | |
|
|
249 | //rot1 = normal_matrix * rot1; |
|
|
250 | |
|
|
251 | rot2 = float3 (x(rot1), z(rot1), -y(rot1)); |
|
|
252 | rot3 = float3 (y(rot1), -x(rot1), z(rot1)); |
|
|
253 | |
|
|
254 | normal = mat3 (rot1, rot2, rot3) * normal; |
|
|
255 | |
|
|
256 | fac = dot (normalize (normal), normalize (ctx.pass->l->sh_lightvec)); |
123 | //fac = pow (max (fac, 0.0), 8); |
257 | fac = max (pow (max (fac, 0.0), 6), 0.3); |
124 | xyz (fout.frag_color) = (texture_2d (texvar, fin.tex_coord[0] - disp)) * max (fac * (0.4 + 1.F * camdist), 0); |
258 | xyz (fout.frag_color) = (texture_2d (texvar, texcoord) + 0.2F) * fac |
125 | |
259 | * ctx.pass->l->sh_colour; |
126 | p.fsh->end (); |
260 | //xyz (fout.frag_color) = lc * fac; |
127 | p.fsh->compile (); |
261 | } |
128 | p.link (); |
|
|
129 | } |
262 | } |
130 | |
263 | |
131 | void test_material::enable (view &ctx) |
264 | void test_material::enable (view &ctx) |
132 | { |
265 | { |
133 | p.enable (); |
266 | material::enable (ctx); |
134 | lightpos->set (vec3 (0, 0, 0)); |
|
|
135 | texvar->enable (); |
267 | texvar->enable (); |
136 | normvar->enable (); |
268 | normvar->enable (); |
137 | } |
269 | } |
138 | |
270 | |
139 | void test_material::disable (view &ctx) |
271 | void test_material::disable (view &ctx) |
140 | { |
272 | { |
141 | normvar->disable (); |
273 | normvar->disable (); |
142 | texvar->disable (); |
274 | texvar->disable (); |
143 | p.disable (); |
275 | material::disable (ctx); |
144 | } |
276 | } |
145 | |
277 | |
|
|
278 | test_material *testmat; |
|
|
279 | mat_gouraud_shaded *testmat2; |
|
|
280 | mat_timed *testmat3; |
|
|
281 | |