goat3dgfx

annotate src/unistate.cc @ 16:f61cc1df533c

find changesets by author, revision, files, or words in the commit message
added viewscn example (under dev)
author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 30 Nov 2013 20:53:26 +0200
parents 1873dfd13f2d
children
rev   line source
nuclear@0 1 #include <map>
nuclear@0 2 #include <vector>
nuclear@0 3 #include "unistate.h"
nuclear@0 4 #include "shader.h"
nuclear@0 5 #include "logger.h"
nuclear@0 6
nuclear@15 7 using namespace goatgfx;
nuclear@15 8
nuclear@0 9 struct StateItem {
nuclear@0 10 StType type;
nuclear@0 11
nuclear@0 12 union {
nuclear@0 13 int ival[4];
nuclear@0 14 float fval[16];
nuclear@0 15 };
nuclear@0 16 int transpose; // for matrices
nuclear@0 17 };
nuclear@0 18
nuclear@0 19 static const char *typestr(StType type);
nuclear@0 20 static int type_nelem(StType type);
nuclear@0 21 static StType float_type(int elem);
nuclear@0 22 static StType int_type(int elem);
nuclear@0 23
nuclear@15 24 namespace goatgfx {
nuclear@15 25
nuclear@0 26 std::vector<StateItem> state;
nuclear@0 27 std::map<std::string, int> stateidx;
nuclear@0 28
nuclear@0 29
nuclear@0 30 int add_unistate(const char *name, StType type)
nuclear@0 31 {
nuclear@0 32 static const float ident3[] = {1, 0, 0, 0, 1, 0, 0, 0, 1};
nuclear@0 33 static const float ident4[] = {1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1};
nuclear@0 34
nuclear@0 35 if(stateidx.find(name) != stateidx.end()) {
nuclear@0 36 return stateidx[name];
nuclear@0 37 }
nuclear@0 38
nuclear@0 39 StateItem sitem;
nuclear@0 40 memset(&sitem, 0, sizeof sitem);
nuclear@0 41 sitem.type = type;
nuclear@0 42
nuclear@0 43 // initialize to a reasonable default value
nuclear@0 44 switch(type) {
nuclear@0 45 case ST_MATRIX3:
nuclear@0 46 memcpy(sitem.fval, ident3, sizeof ident3);
nuclear@0 47 break;
nuclear@0 48
nuclear@0 49 case ST_MATRIX4:
nuclear@0 50 memcpy(sitem.fval, ident4, sizeof ident4);
nuclear@0 51 break;
nuclear@0 52
nuclear@0 53 default:
nuclear@0 54 break; // in all other cases leave it zero (see memset above)
nuclear@0 55 }
nuclear@0 56
nuclear@0 57 int sidx = state.size();
nuclear@0 58 state.push_back(sitem);
nuclear@0 59 stateidx[name] = sidx;
nuclear@0 60
nuclear@0 61 debug_log("adding uniform state [%d]: %s %s\n", sidx, typestr(sitem.type), name);
nuclear@0 62
nuclear@0 63 return sidx;
nuclear@0 64 }
nuclear@0 65
nuclear@0 66 int get_unistate_index(const char *name)
nuclear@0 67 {
nuclear@0 68 std::map<std::string, int>::const_iterator it = stateidx.find(name);
nuclear@0 69 if(it != stateidx.end()) {
nuclear@0 70 return it->second;
nuclear@0 71 }
nuclear@0 72 return -1;
nuclear@0 73 }
nuclear@0 74
nuclear@0 75 #define CHECK_INDEX(i) \
nuclear@0 76 if(i < 0 || i >= (int)state.size()) return
nuclear@0 77
nuclear@0 78 #define CHECK_COUNT(count, type) \
nuclear@0 79 do { \
nuclear@0 80 int max_elem = type_nelem(type); \
nuclear@0 81 if(!(count) || (count) > max_elem) { \
nuclear@0 82 count = max_elem; \
nuclear@0 83 } \
nuclear@0 84 } while(0)
nuclear@0 85
nuclear@0 86 void set_unistate(int sidx, const int *val, int count)
nuclear@0 87 {
nuclear@0 88 CHECK_INDEX(sidx);
nuclear@0 89 CHECK_COUNT(count, state[sidx].type);
nuclear@0 90
nuclear@0 91 memcpy(state[sidx].ival, val, count * sizeof *state[sidx].ival);
nuclear@0 92 }
nuclear@0 93
nuclear@0 94 void set_unistate(int sidx, const float *val, int count)
nuclear@0 95 {
nuclear@0 96 CHECK_INDEX(sidx);
nuclear@0 97 CHECK_COUNT(count, state[sidx].type);
nuclear@0 98
nuclear@0 99 memcpy(state[sidx].fval, val, count * sizeof *state[sidx].fval);
nuclear@0 100 state[sidx].transpose = 0;
nuclear@0 101 }
nuclear@0 102
nuclear@0 103 void get_unistate(int sidx, int *val, int count)
nuclear@0 104 {
nuclear@0 105 CHECK_INDEX(sidx);
nuclear@0 106 CHECK_COUNT(count, state[sidx].type);
nuclear@0 107
nuclear@0 108 memcpy(val, state[sidx].ival, count * sizeof *val);
nuclear@0 109 }
nuclear@0 110
nuclear@0 111 void get_unistate(int sidx, float *val, int count)
nuclear@0 112 {
nuclear@0 113 CHECK_INDEX(sidx);
nuclear@0 114 CHECK_COUNT(count, state[sidx].type);
nuclear@0 115
nuclear@0 116 memcpy(val, state[sidx].fval, count * sizeof *val);
nuclear@0 117 }
nuclear@0 118
nuclear@0 119 void set_unistate(int sidx, int val)
nuclear@0 120 {
nuclear@0 121 set_unistate(sidx, &val, 1);
nuclear@0 122 }
nuclear@0 123
nuclear@0 124 void set_unistate(int sidx, float val)
nuclear@0 125 {
nuclear@0 126 set_unistate(sidx, &val, 1);
nuclear@0 127 }
nuclear@0 128
nuclear@0 129 void set_unistate(int sidx, const Vector2 &vec)
nuclear@0 130 {
nuclear@0 131 set_unistate(sidx, &vec.x, 2);
nuclear@0 132 }
nuclear@0 133
nuclear@0 134 void set_unistate(int sidx, const Vector3 &vec)
nuclear@0 135 {
nuclear@0 136 set_unistate(sidx, &vec.x, 3);
nuclear@0 137 }
nuclear@0 138
nuclear@0 139 void set_unistate(int sidx, const Vector4 &vec)
nuclear@0 140 {
nuclear@0 141 set_unistate(sidx, &vec.x, 4);
nuclear@0 142 }
nuclear@0 143
nuclear@0 144 void set_unistate(int sidx, const Matrix3x3 &mat)
nuclear@0 145 {
nuclear@0 146 set_unistate(sidx, mat[0], 9);
nuclear@0 147 state[sidx].transpose = 1;
nuclear@0 148 }
nuclear@0 149
nuclear@0 150 void set_unistate(int sidx, const Matrix4x4 &mat)
nuclear@0 151 {
nuclear@0 152 set_unistate(sidx, mat[0], 16);
nuclear@0 153 state[sidx].transpose = 1;
nuclear@0 154 }
nuclear@0 155
nuclear@0 156
nuclear@0 157 int set_unistate(const char *name, int *val, int count)
nuclear@0 158 {
nuclear@0 159 int sidx = get_unistate_index(name);
nuclear@0 160 if(sidx < 0) {
nuclear@0 161 StType type = int_type(count);
nuclear@0 162 if(type == ST_UNKNOWN) {
nuclear@0 163 error_log("invalid element count (%d) while setting previously unknown unistate item \"%s\"\n",
nuclear@0 164 count, name);
nuclear@0 165 return -1;
nuclear@0 166 }
nuclear@0 167
nuclear@0 168 sidx = add_unistate(name, type);
nuclear@0 169 }
nuclear@0 170 set_unistate(sidx, val);
nuclear@0 171 return sidx;
nuclear@0 172 }
nuclear@0 173
nuclear@0 174 int set_unistate(const char *name, float *val, int count)
nuclear@0 175 {
nuclear@0 176 int sidx = get_unistate_index(name);
nuclear@0 177 if(sidx < 0) {
nuclear@0 178 StType type = float_type(count);
nuclear@0 179 if(type == ST_UNKNOWN) {
nuclear@0 180 error_log("invalid element count (%d) while setting previously unknown unistate item \"%s\"\n",
nuclear@0 181 count, name);
nuclear@0 182 return -1;
nuclear@0 183 }
nuclear@0 184
nuclear@0 185 sidx = add_unistate(name, type);
nuclear@0 186 }
nuclear@0 187 set_unistate(sidx, val);
nuclear@0 188 return sidx;
nuclear@0 189 }
nuclear@0 190
nuclear@0 191 int set_unistate(const char *name, int val)
nuclear@0 192 {
nuclear@0 193 int sidx = get_unistate_index(name);
nuclear@0 194 if(sidx < 0) {
nuclear@0 195 sidx = add_unistate(name, ST_INT);
nuclear@0 196 }
nuclear@0 197 set_unistate(sidx, val);
nuclear@0 198 return sidx;
nuclear@0 199 }
nuclear@0 200
nuclear@0 201 int set_unistate(const char *name, float val)
nuclear@0 202 {
nuclear@0 203 int sidx = get_unistate_index(name);
nuclear@0 204 if(sidx < 0) {
nuclear@0 205 sidx = add_unistate(name, ST_FLOAT);
nuclear@0 206 }
nuclear@0 207 set_unistate(sidx, val);
nuclear@0 208 return sidx;
nuclear@0 209 }
nuclear@0 210
nuclear@0 211 int set_unistate(const char *name, const Vector2 &vec)
nuclear@0 212 {
nuclear@0 213 int sidx = get_unistate_index(name);
nuclear@0 214 if(sidx < 0) {
nuclear@0 215 sidx = add_unistate(name, ST_FLOAT2);
nuclear@0 216 }
nuclear@0 217 set_unistate(sidx, vec);
nuclear@0 218 return sidx;
nuclear@0 219 }
nuclear@0 220
nuclear@0 221 int set_unistate(const char *name, const Vector3 &vec)
nuclear@0 222 {
nuclear@0 223 int sidx = get_unistate_index(name);
nuclear@0 224 if(sidx < 0) {
nuclear@0 225 sidx = add_unistate(name, ST_FLOAT3);
nuclear@0 226 }
nuclear@0 227 set_unistate(sidx, vec);
nuclear@0 228 return sidx;
nuclear@0 229 }
nuclear@0 230
nuclear@0 231 int set_unistate(const char *name, const Vector4 &vec)
nuclear@0 232 {
nuclear@0 233 int sidx = get_unistate_index(name);
nuclear@0 234 if(sidx < 0) {
nuclear@0 235 sidx = add_unistate(name, ST_FLOAT4);
nuclear@0 236 }
nuclear@0 237 set_unistate(sidx, vec);
nuclear@0 238 return sidx;
nuclear@0 239 }
nuclear@0 240
nuclear@0 241 int set_unistate(const char *name, const Matrix3x3 &mat)
nuclear@0 242 {
nuclear@0 243 int sidx = get_unistate_index(name);
nuclear@0 244 if(sidx < 0) {
nuclear@0 245 sidx = add_unistate(name, ST_MATRIX3);
nuclear@0 246 }
nuclear@0 247 set_unistate(sidx, mat);
nuclear@0 248 return sidx;
nuclear@0 249 }
nuclear@0 250
nuclear@0 251 int set_unistate(const char *name, const Matrix4x4 &mat)
nuclear@0 252 {
nuclear@0 253 int sidx = get_unistate_index(name);
nuclear@0 254 if(sidx < 0) {
nuclear@0 255 sidx = add_unistate(name, ST_MATRIX4);
nuclear@0 256 }
nuclear@0 257 set_unistate(sidx, mat);
nuclear@0 258 return sidx;
nuclear@0 259 }
nuclear@0 260
nuclear@0 261
nuclear@0 262 int get_unistate_int(int sidx)
nuclear@0 263 {
nuclear@0 264 int val = 0;
nuclear@0 265 get_unistate(sidx, &val, 1);
nuclear@0 266 return val;
nuclear@0 267 }
nuclear@0 268
nuclear@0 269 float get_unistate_float(int sidx)
nuclear@0 270 {
nuclear@0 271 float val = 0.0f;
nuclear@0 272 get_unistate(sidx, &val, 1);
nuclear@0 273 return val;
nuclear@0 274 }
nuclear@0 275
nuclear@0 276 Vector2 get_unistate_vec2(int sidx)
nuclear@0 277 {
nuclear@0 278 float val[2] = {0.0f, 0.0f};
nuclear@0 279 get_unistate(sidx, val, 2);
nuclear@0 280 return Vector2(val[0], val[1]);
nuclear@0 281 }
nuclear@0 282
nuclear@0 283 Vector3 get_unistate_vec3(int sidx)
nuclear@0 284 {
nuclear@0 285 float val[3] = {0.0f, 0.0f, 0.0f};
nuclear@0 286 get_unistate(sidx, val, 3);
nuclear@0 287 return Vector3(val[0], val[1], val[2]);
nuclear@0 288 }
nuclear@0 289
nuclear@0 290 Vector4 get_unistate_vec4(int sidx)
nuclear@0 291 {
nuclear@0 292 float val[4] = {0.0f, 0.0f, 0.0f};
nuclear@0 293 get_unistate(sidx, val, 4);
nuclear@0 294 return Vector4(val[0], val[1], val[2], val[3]);
nuclear@0 295 }
nuclear@0 296
nuclear@0 297 Matrix3x3 get_unistate_mat3(int sidx)
nuclear@0 298 {
nuclear@0 299 Matrix3x3 res;
nuclear@0 300 get_unistate(sidx, res.m[0], 9);
nuclear@0 301 return res;
nuclear@0 302 }
nuclear@0 303
nuclear@0 304 Matrix4x4 get_unistate_mat4(int sidx)
nuclear@0 305 {
nuclear@0 306 Matrix4x4 res;
nuclear@0 307 get_unistate(sidx, res.m[0], 16);
nuclear@0 308 return res;
nuclear@0 309 }
nuclear@0 310
nuclear@0 311
nuclear@0 312 int get_unistate_int(const char *name)
nuclear@0 313 {
nuclear@0 314 int sidx = get_unistate_index(name);
nuclear@0 315 if(sidx == -1) {
nuclear@0 316 return 0;
nuclear@0 317 }
nuclear@0 318 return get_unistate_int(sidx);
nuclear@0 319 }
nuclear@0 320
nuclear@0 321 float get_unistate_float(const char *name)
nuclear@0 322 {
nuclear@0 323 int sidx = get_unistate_index(name);
nuclear@0 324 if(sidx == -1) {
nuclear@0 325 return 0.0f;
nuclear@0 326 }
nuclear@0 327 return get_unistate_float(sidx);
nuclear@0 328 }
nuclear@0 329
nuclear@0 330 Vector2 get_unistate_vec2(const char *name)
nuclear@0 331 {
nuclear@0 332 int sidx = get_unistate_index(name);
nuclear@0 333 if(sidx == -1) {
nuclear@0 334 return Vector2();
nuclear@0 335 }
nuclear@0 336 return get_unistate_vec2(sidx);
nuclear@0 337 }
nuclear@0 338
nuclear@0 339 Vector3 get_unistate_vec3(const char *name)
nuclear@0 340 {
nuclear@0 341 int sidx = get_unistate_index(name);
nuclear@0 342 if(sidx == -1) {
nuclear@0 343 return Vector3();
nuclear@0 344 }
nuclear@0 345 return get_unistate_vec3(sidx);
nuclear@0 346 }
nuclear@0 347
nuclear@0 348 Vector4 get_unistate_vec4(const char *name)
nuclear@0 349 {
nuclear@0 350 int sidx = get_unistate_index(name);
nuclear@0 351 if(sidx == -1) {
nuclear@0 352 return Vector4();
nuclear@0 353 }
nuclear@0 354 return get_unistate_vec4(sidx);
nuclear@0 355 }
nuclear@0 356
nuclear@0 357 Matrix3x3 get_unistate_mat3(const char *name)
nuclear@0 358 {
nuclear@0 359 int sidx = get_unistate_index(name);
nuclear@0 360 if(sidx == -1) {
nuclear@0 361 return Matrix3x3();
nuclear@0 362 }
nuclear@0 363 return get_unistate_mat3(sidx);
nuclear@0 364 }
nuclear@0 365
nuclear@0 366 Matrix4x4 get_unistate_mat4(const char *name)
nuclear@0 367 {
nuclear@0 368 int sidx = get_unistate_index(name);
nuclear@0 369 if(sidx == -1) {
nuclear@0 370 return Matrix4x4();
nuclear@0 371 }
nuclear@0 372 return get_unistate_mat4(sidx);
nuclear@0 373 }
nuclear@0 374
nuclear@0 375
nuclear@0 376 void setup_unistate(const ShaderProg *sdr)
nuclear@0 377 {
nuclear@0 378 if(!sdr) {
nuclear@0 379 if(!(sdr = ShaderProg::current)) {
nuclear@0 380 return;
nuclear@0 381 }
nuclear@0 382 }
nuclear@0 383
nuclear@0 384 sdr->setup_state_uniforms();
nuclear@0 385 }
nuclear@0 386
nuclear@0 387 bool setup_unistate(int sidx, const ShaderProg *sdr, int loc)
nuclear@0 388 {
nuclear@0 389 if(loc < 0 || sidx < 0 || sidx >= (int)state.size()) {
nuclear@0 390 return false;
nuclear@0 391 }
nuclear@0 392
nuclear@0 393 CHECKGLERR;
nuclear@0 394 glUseProgram(sdr->get_id());
nuclear@0 395 CHECKGLERR;
nuclear@0 396
nuclear@0 397 switch(state[sidx].type) {
nuclear@0 398 case ST_INT:
nuclear@0 399 glUniform1iv(loc, 1, state[sidx].ival);
nuclear@0 400 break;
nuclear@0 401 case ST_INT2:
nuclear@0 402 glUniform2iv(loc, 1, state[sidx].ival);
nuclear@0 403 break;
nuclear@0 404 case ST_INT3:
nuclear@0 405 glUniform3iv(loc, 1, state[sidx].ival);
nuclear@0 406 break;
nuclear@0 407 case ST_INT4:
nuclear@0 408 glUniform4iv(loc, 1, state[sidx].ival);
nuclear@0 409 break;
nuclear@0 410
nuclear@0 411 case ST_FLOAT:
nuclear@0 412 glUniform1fv(loc, 1, state[sidx].fval);
nuclear@0 413 break;
nuclear@0 414 case ST_FLOAT2:
nuclear@0 415 glUniform2fv(loc, 1, state[sidx].fval);
nuclear@0 416 break;
nuclear@0 417 case ST_FLOAT3:
nuclear@0 418 glUniform3fv(loc, 1, state[sidx].fval);
nuclear@0 419 break;
nuclear@0 420 case ST_FLOAT4:
nuclear@0 421 glUniform4fv(loc, 1, state[sidx].fval);
nuclear@0 422 break;
nuclear@0 423
nuclear@0 424 case ST_MATRIX3:
nuclear@0 425 #ifdef GL_ES_VERSION_2_0
nuclear@0 426 {
nuclear@0 427 float tmat[9], *ptr = tmat;
nuclear@0 428 for(int i=0; i<3; i++) {
nuclear@0 429 for(int j=0; j<3; j++) {
nuclear@0 430 *ptr++ = state[sidx].fval[j * 3 + i];
nuclear@0 431 }
nuclear@0 432 }
nuclear@0 433 glUniformMatrix3fv(loc, 1, GL_FALSE, tmat);
nuclear@0 434 }
nuclear@0 435 #else
nuclear@0 436 glUniformMatrix3fv(loc, 1, state[sidx].transpose, state[sidx].fval);
nuclear@0 437 #endif
nuclear@0 438 break;
nuclear@0 439
nuclear@0 440 case ST_MATRIX4:
nuclear@0 441 #ifdef GL_ES_VERSION_2_0
nuclear@0 442 {
nuclear@0 443 float tmat[16], *ptr = tmat;
nuclear@0 444 for(int i=0; i<4; i++) {
nuclear@0 445 for(int j=0; j<4; j++) {
nuclear@0 446 *ptr++ = state[sidx].fval[j * 4 + i];
nuclear@0 447 }
nuclear@0 448 }
nuclear@0 449 glUniformMatrix4fv(loc, 1, GL_FALSE, tmat);
nuclear@0 450 }
nuclear@0 451 #else
nuclear@0 452 glUniformMatrix4fv(loc, 1, state[sidx].transpose, state[sidx].fval);
nuclear@0 453 #endif
nuclear@0 454 break;
nuclear@0 455
nuclear@0 456 default:
nuclear@0 457 return false;
nuclear@0 458 }
nuclear@0 459
nuclear@0 460 CHECKGLERR;
nuclear@0 461 return true;
nuclear@0 462 }
nuclear@0 463
nuclear@0 464 bool setup_unistate(const char *name, const ShaderProg *sdr)
nuclear@0 465 {
nuclear@0 466 int loc = sdr->get_uniform_location(name);
nuclear@0 467 if(loc == -1) {
nuclear@0 468 return false;
nuclear@0 469 }
nuclear@0 470 return setup_unistate(get_unistate_index(name), sdr, loc);
nuclear@0 471 }
nuclear@0 472
nuclear@0 473 void set_world_matrix(const Matrix4x4 &mat)
nuclear@0 474 {
nuclear@0 475 static int sidx = -1, sidx_transp, sidx_mat3;
nuclear@0 476
nuclear@0 477 if(sidx == -1) {
nuclear@0 478 sidx = add_unistate("st_world_matrix", ST_MATRIX4);
nuclear@0 479 sidx_mat3 = add_unistate("st_world_matrix3", ST_MATRIX3);
nuclear@0 480 sidx_transp = add_unistate("st_world_matrix_transpose", ST_MATRIX4);
nuclear@0 481 }
nuclear@0 482
nuclear@0 483 set_unistate(sidx, mat);
nuclear@0 484 set_unistate(sidx_mat3, Matrix3x3(mat));
nuclear@0 485 set_unistate(sidx_transp, mat[0]); // by using the float* variant, we unset the transpose flag
nuclear@0 486 }
nuclear@0 487
nuclear@0 488 void set_view_matrix(const Matrix4x4 &mat)
nuclear@0 489 {
nuclear@0 490 static int sidx = -1, sidx_transp, sidx_mat3;
nuclear@0 491
nuclear@0 492 if(sidx == -1) {
nuclear@0 493 sidx = add_unistate("st_view_matrix", ST_MATRIX4);
nuclear@0 494 sidx_mat3 = add_unistate("st_view_matrix3", ST_MATRIX3);
nuclear@0 495 sidx_transp = add_unistate("st_view_matrix_transpose", ST_MATRIX4);
nuclear@0 496 }
nuclear@0 497
nuclear@0 498 set_unistate(sidx, mat);
nuclear@0 499 set_unistate(sidx_mat3, Matrix3x3(mat));
nuclear@0 500 set_unistate(sidx_transp, mat[0]); // by using the float* variant, we unset the transpose flag
nuclear@0 501 }
nuclear@0 502
nuclear@0 503 void set_projection_matrix(const Matrix4x4 &mat)
nuclear@0 504 {
nuclear@0 505 static int sidx = -1;
nuclear@0 506
nuclear@0 507 if(sidx == -1) {
nuclear@0 508 sidx = add_unistate("st_proj_matrix", ST_MATRIX4);
nuclear@0 509 }
nuclear@0 510
nuclear@0 511 set_unistate(sidx, mat);
nuclear@0 512 }
nuclear@0 513
nuclear@0 514 void set_texture_matrix(const Matrix4x4 &mat)
nuclear@0 515 {
nuclear@0 516 static int sidx = -1;
nuclear@0 517
nuclear@0 518 if(sidx == -1) {
nuclear@0 519 sidx = add_unistate("st_tex_matrix", ST_MATRIX4);
nuclear@0 520 }
nuclear@0 521
nuclear@0 522 set_unistate(sidx, mat);
nuclear@0 523 }
nuclear@0 524
nuclear@0 525 Matrix4x4 get_world_matrix()
nuclear@0 526 {
nuclear@0 527 static int sidx = -1;
nuclear@0 528
nuclear@0 529 if(sidx == -1) {
nuclear@0 530 if((sidx = get_unistate_index("st_world_matrix")) == -1) {
nuclear@0 531 return Matrix4x4();
nuclear@0 532 }
nuclear@0 533 }
nuclear@0 534 return get_unistate_mat4(sidx);
nuclear@0 535 }
nuclear@0 536
nuclear@0 537 Matrix4x4 get_view_matrix()
nuclear@0 538 {
nuclear@0 539 static int sidx = -1;
nuclear@0 540
nuclear@0 541 if(sidx == -1) {
nuclear@0 542 if((sidx = get_unistate_index("st_view_matrix")) == -1) {
nuclear@0 543 return Matrix4x4();
nuclear@0 544 }
nuclear@0 545 }
nuclear@0 546 return get_unistate_mat4(sidx);
nuclear@0 547 }
nuclear@0 548
nuclear@0 549 Matrix4x4 get_projection_matrix()
nuclear@0 550 {
nuclear@0 551 static int sidx = -1;
nuclear@0 552
nuclear@0 553 if(sidx == -1) {
nuclear@0 554 if((sidx = get_unistate_index("st_proj_matrix")) == -1) {
nuclear@0 555 return Matrix4x4();
nuclear@0 556 }
nuclear@0 557 }
nuclear@0 558 return get_unistate_mat4(sidx);
nuclear@0 559 }
nuclear@0 560
nuclear@0 561 Matrix4x4 get_texture_matrix()
nuclear@0 562 {
nuclear@0 563 static int sidx = -1;
nuclear@0 564
nuclear@0 565 if(sidx == -1) {
nuclear@0 566 if((sidx = get_unistate_index("st_tex_matrix")) == -1) {
nuclear@0 567 return Matrix4x4();
nuclear@0 568 }
nuclear@0 569 }
nuclear@0 570 return get_unistate_mat4(sidx);
nuclear@0 571 }
nuclear@0 572
nuclear@0 573 void setup_gl_matrices()
nuclear@0 574 {
nuclear@0 575 #ifdef USE_OLDGL
nuclear@0 576 Matrix4x4 modelview = get_world_matrix() * get_view_matrix();
nuclear@0 577 Matrix4x4 proj = get_projection_matrix();
nuclear@0 578 Matrix4x4 tex = get_texture_matrix();
nuclear@0 579
nuclear@0 580 glMatrixMode(GL_TEXTURE);
nuclear@0 581 glLoadTransposeMatrixf(tex[0]);
nuclear@0 582 glMatrixMode(GL_PROJECTION);
nuclear@0 583 glLoadTransposeMatrixf(proj[0]);
nuclear@0 584 glMatrixMode(GL_MODELVIEW);
nuclear@0 585 glLoadTransposeMatrixf(modelview[0]);
nuclear@0 586 #endif
nuclear@0 587 }
nuclear@0 588
nuclear@15 589 } // namespace goatgfx
nuclear@15 590
nuclear@0 591 static const char *typestr(StType type)
nuclear@0 592 {
nuclear@0 593 switch(type) {
nuclear@0 594 case ST_INT:
nuclear@0 595 return "int";
nuclear@0 596 case ST_INT2:
nuclear@0 597 return "ivec2";
nuclear@0 598 case ST_INT3:
nuclear@0 599 return "ivec3";
nuclear@0 600 case ST_INT4:
nuclear@0 601 return "ivec4";
nuclear@0 602 case ST_FLOAT:
nuclear@0 603 return "float";
nuclear@0 604 case ST_FLOAT2:
nuclear@0 605 return "vec2";
nuclear@0 606 case ST_FLOAT3:
nuclear@0 607 return "vec3";
nuclear@0 608 case ST_FLOAT4:
nuclear@0 609 return "vec4";
nuclear@0 610 case ST_MATRIX3:
nuclear@0 611 return "mat3";
nuclear@0 612 case ST_MATRIX4:
nuclear@0 613 return "mat4";
nuclear@0 614
nuclear@0 615 default:
nuclear@0 616 break;
nuclear@0 617 }
nuclear@0 618 return "<unknown>";
nuclear@0 619 }
nuclear@0 620
nuclear@0 621 static int type_nelem(StType type)
nuclear@0 622 {
nuclear@0 623 switch(type) {
nuclear@0 624 case ST_INT:
nuclear@0 625 case ST_FLOAT:
nuclear@0 626 return 1;
nuclear@0 627 case ST_INT2:
nuclear@0 628 case ST_FLOAT2:
nuclear@0 629 return 2;
nuclear@0 630 case ST_INT3:
nuclear@0 631 case ST_FLOAT3:
nuclear@0 632 return 3;
nuclear@0 633 case ST_INT4:
nuclear@0 634 case ST_FLOAT4:
nuclear@0 635 return 4;
nuclear@0 636 case ST_MATRIX3:
nuclear@0 637 return 9;
nuclear@0 638 case ST_MATRIX4:
nuclear@0 639 return 16;
nuclear@0 640
nuclear@0 641 default:
nuclear@0 642 break;
nuclear@0 643 }
nuclear@0 644
nuclear@0 645 return 0;
nuclear@0 646 }
nuclear@0 647
nuclear@0 648 static StType float_type(int elem)
nuclear@0 649 {
nuclear@0 650 switch(elem) {
nuclear@0 651 case 1:
nuclear@0 652 return ST_FLOAT;
nuclear@0 653 case 2:
nuclear@0 654 return ST_FLOAT2;
nuclear@0 655 case 3:
nuclear@0 656 return ST_FLOAT3;
nuclear@0 657 case 4:
nuclear@0 658 return ST_FLOAT4;
nuclear@0 659 case 9:
nuclear@0 660 return ST_MATRIX3;
nuclear@0 661 case 16:
nuclear@0 662 return ST_MATRIX4;
nuclear@0 663 default:
nuclear@0 664 break;
nuclear@0 665 }
nuclear@0 666 return ST_UNKNOWN;
nuclear@0 667 }
nuclear@0 668
nuclear@0 669 static StType int_type(int elem)
nuclear@0 670 {
nuclear@0 671 switch(elem) {
nuclear@0 672 case 1:
nuclear@0 673 return ST_INT;
nuclear@0 674 case 2:
nuclear@0 675 return ST_INT2;
nuclear@0 676 case 3:
nuclear@0 677 return ST_INT3;
nuclear@0 678 case 4:
nuclear@0 679 return ST_INT4;
nuclear@0 680 default:
nuclear@0 681 break;
nuclear@0 682 }
nuclear@0 683 return ST_UNKNOWN;
nuclear@0 684 }