comparison: src/GLCompiler.cc
src/GLCompiler.cc
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- 09150d027e8c
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- b376645315ab
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| 705:09150d027e8c | 706:d79083b9f74d |
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| 1 /* | |
| 2 * LDForge: LDraw parts authoring CAD | |
| 3 * Copyright (C) 2013, 2014 Santeri Piippo | |
| 4 * | |
| 5 * This program is free software: you can redistribute it and/or modify | |
| 6 * it under the terms of the GNU General Public License as published by | |
| 7 * the Free Software Foundation, either version 3 of the License, or | |
| 8 * (at your option) any later version. | |
| 9 * | |
| 10 * This program is distributed in the hope that it will be useful, | |
| 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 * GNU General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License | |
| 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 */ | |
| 18 | |
| 19 #define GL_GLEXT_PROTOTYPES | |
| 20 #include <GL/glu.h> | |
| 21 #include <GL/glext.h> | |
| 22 #include "GLCompiler.h" | |
| 23 #include "LDObject.h" | |
| 24 #include "Colors.h" | |
| 25 #include "Document.h" | |
| 26 #include "Misc.h" | |
| 27 #include "GLRenderer.h" | |
| 28 #include "Dialogs.h" | |
| 29 | |
| 30 cfg (String, gl_selectcolor, "#0080FF") | |
| 31 | |
| 32 struct GLErrorInfo | |
| 33 { | |
| 34 GLenum value; | |
| 35 QString text; | |
| 36 }; | |
| 37 | |
| 38 static const GLErrorInfo g_GLErrors[] = | |
| 39 { | |
| 40 { GL_NO_ERROR, "No error" }, | |
| 41 { GL_INVALID_ENUM, "Unacceptable enumerator passed" }, | |
| 42 { GL_INVALID_VALUE, "Numeric argument out of range" }, | |
| 43 { GL_INVALID_OPERATION, "The operation is not allowed to be done in this state" }, | |
| 44 { GL_INVALID_FRAMEBUFFER_OPERATION, "Framebuffer object is not complete"}, | |
| 45 { GL_OUT_OF_MEMORY, "Out of memory" }, | |
| 46 { GL_STACK_UNDERFLOW, "The operation would have caused an underflow" }, | |
| 47 { GL_STACK_OVERFLOW, "The operation would have caused an overflow" }, | |
| 48 }; | |
| 49 | |
| 50 #include <QTime> | |
| 51 | |
| 52 #define CLOCK_INIT QTime t0; | |
| 53 | |
| 54 #define CLOCK_START \ | |
| 55 { \ | |
| 56 t0 = QTime::currentTime(); \ | |
| 57 } | |
| 58 | |
| 59 #define CLOCK_TIME(A) \ | |
| 60 { \ | |
| 61 fprint (stderr, A ": %1ms\n", t0.msecsTo (QTime::currentTime())); \ | |
| 62 } | |
| 63 | |
| 64 #define DEBUG_PRINT(...) fprint (stdout, __VA_ARGS__) | |
| 65 | |
| 66 extern_cfg (Bool, gl_blackedges); | |
| 67 extern_cfg (String, gl_bgcolor); | |
| 68 static QList<short> g_warnedColors; | |
| 69 static const QColor g_BFCFrontColor (40, 192, 40); | |
| 70 static const QColor g_BFCBackColor (224, 40, 40); | |
| 71 | |
| 72 // ============================================================================= | |
| 73 // | |
| 74 void checkGLError_private (const char* file, int line) | |
| 75 { | |
| 76 QString errmsg; | |
| 77 GLenum errnum = glGetError(); | |
| 78 | |
| 79 if (errnum == GL_NO_ERROR) | |
| 80 return; | |
| 81 | |
| 82 for (const GLErrorInfo& err : g_GLErrors) | |
| 83 { | |
| 84 if (err.value == errnum) | |
| 85 { | |
| 86 errmsg = err.text; | |
| 87 break; | |
| 88 } | |
| 89 } | |
| 90 | |
| 91 print ("OpenGL ERROR: at %1:%2: %3", basename (QString (file)), line, errmsg); | |
| 92 } | |
| 93 | |
| 94 // ============================================================================= | |
| 95 // | |
| 96 GLCompiler::GLCompiler() | |
| 97 { | |
| 98 needMerge(); | |
| 99 memset (m_vboSizes, 0, sizeof m_vboSizes); | |
| 100 } | |
| 101 | |
| 102 // ============================================================================= | |
| 103 // | |
| 104 void GLCompiler::initialize() | |
| 105 { | |
| 106 glGenBuffers (g_numVBOs, &m_vbo[0]); | |
| 107 checkGLError(); | |
| 108 } | |
| 109 | |
| 110 // ============================================================================= | |
| 111 // | |
| 112 GLCompiler::~GLCompiler() | |
| 113 { | |
| 114 glDeleteBuffers (g_numVBOs, &m_vbo[0]); | |
| 115 checkGLError(); | |
| 116 } | |
| 117 | |
| 118 // ============================================================================= | |
| 119 // | |
| 120 uint32 GLCompiler::colorToRGB (const QColor& color) | |
| 121 { | |
| 122 return | |
| 123 (color.red() & 0xFF) << 0x00 | | |
| 124 (color.green() & 0xFF) << 0x08 | | |
| 125 (color.blue() & 0xFF) << 0x10 | | |
| 126 (color.alpha() & 0xFF) << 0x18; | |
| 127 } | |
| 128 | |
| 129 // ============================================================================= | |
| 130 // | |
| 131 QColor GLCompiler::indexColorForID (int id) const | |
| 132 { | |
| 133 // Calculate a color based from this index. This method caters for | |
| 134 // 16777216 objects. I don't think that will be exceeded anytime soon. :) | |
| 135 int r = (id / 0x10000) % 0x100, | |
| 136 g = (id / 0x100) % 0x100, | |
| 137 b = id % 0x100; | |
| 138 | |
| 139 return QColor (r, g, b); | |
| 140 } | |
| 141 | |
| 142 // ============================================================================= | |
| 143 // | |
| 144 QColor GLCompiler::polygonColor (LDPolygon& poly, LDObject* topobj) const | |
| 145 { | |
| 146 QColor qcol; | |
| 147 | |
| 148 if (poly.color == maincolor) | |
| 149 { | |
| 150 if (topobj->color() == maincolor) | |
| 151 qcol = GLRenderer::getMainColor(); | |
| 152 else | |
| 153 qcol = getColor (topobj->color())->faceColor; | |
| 154 } | |
| 155 elif (poly.color == edgecolor) | |
| 156 { | |
| 157 qcol = luma (QColor (gl_bgcolor)) > 40 ? Qt::black : Qt::white; | |
| 158 } | |
| 159 else | |
| 160 { | |
| 161 LDColor* col = getColor (poly.color); | |
| 162 | |
| 163 if (col) | |
| 164 qcol = col->faceColor; | |
| 165 } | |
| 166 | |
| 167 if (qcol.isValid() == false) | |
| 168 { | |
| 169 // The color was unknown. Use main color to make the poly.object at least | |
| 170 // not appear pitch-black. | |
| 171 if (poly.num != 2 && poly.num != 5) | |
| 172 qcol = GLRenderer::getMainColor(); | |
| 173 else | |
| 174 qcol = Qt::black; | |
| 175 | |
| 176 // Warn about the unknown color, but only once. | |
| 177 if (g_warnedColors.contains (poly.color) == false) | |
| 178 { | |
| 179 print ("Unknown color %1!\n", poly.color); | |
| 180 g_warnedColors << poly.color; | |
| 181 } | |
| 182 | |
| 183 return qcol; | |
| 184 } | |
| 185 | |
| 186 if (topobj->isSelected()) | |
| 187 { | |
| 188 // Brighten it up for the select list. | |
| 189 QColor selcolor (gl_selectcolor); | |
| 190 qcol.setRed ((qcol.red() + selcolor.red()) / 2); | |
| 191 qcol.setGreen ((qcol.green() + selcolor.green()) / 2); | |
| 192 qcol.setBlue ((qcol.blue() + selcolor.blue()) / 2); | |
| 193 } | |
| 194 | |
| 195 return qcol; | |
| 196 } | |
| 197 | |
| 198 // ============================================================================= | |
| 199 // | |
| 200 void GLCompiler::needMerge() | |
| 201 { | |
| 202 for (int i = 0; i < countof (m_vboChanged); ++i) | |
| 203 m_vboChanged[i] = true; | |
| 204 } | |
| 205 | |
| 206 // ============================================================================= | |
| 207 // | |
| 208 void GLCompiler::stageForCompilation (LDObject* obj) | |
| 209 { | |
| 210 m_staged << obj; | |
| 211 } | |
| 212 | |
| 213 // ============================================================================= | |
| 214 // | |
| 215 void GLCompiler::compileDocument (LDDocument* doc) | |
| 216 { | |
| 217 if (doc == null) | |
| 218 return; | |
| 219 | |
| 220 for (LDObject* obj : doc->objects()) | |
| 221 compileObject (obj); | |
| 222 } | |
| 223 | |
| 224 // ============================================================================= | |
| 225 // | |
| 226 void GLCompiler::compileStaged() | |
| 227 { | |
| 228 removeDuplicates (m_staged); | |
| 229 | |
| 230 for (LDObject* obj : m_staged) | |
| 231 compileObject (obj); | |
| 232 | |
| 233 m_staged.clear(); | |
| 234 } | |
| 235 | |
| 236 // ============================================================================= | |
| 237 // | |
| 238 void GLCompiler::prepareVBO (int vbonum) | |
| 239 { | |
| 240 // Compile anything that still awaits it | |
| 241 compileStaged(); | |
| 242 | |
| 243 if (m_vboChanged[vbonum] == false) | |
| 244 return; | |
| 245 | |
| 246 QVector<GLfloat> vbodata; | |
| 247 | |
| 248 for (auto it = m_objectInfo.begin(); it != m_objectInfo.end(); ++it) | |
| 249 { | |
| 250 if (it.key()->document() == getCurrentDocument()) | |
| 251 vbodata += it->data[vbonum]; | |
| 252 } | |
| 253 | |
| 254 glBindBuffer (GL_ARRAY_BUFFER, m_vbo[vbonum]); | |
| 255 glBufferData (GL_ARRAY_BUFFER, vbodata.size() * sizeof(GLfloat), vbodata.constData(), GL_DYNAMIC_DRAW); | |
| 256 glBindBuffer (GL_ARRAY_BUFFER, 0); | |
| 257 checkGLError(); | |
| 258 m_vboChanged[vbonum] = false; | |
| 259 m_vboSizes[vbonum] = vbodata.size(); | |
| 260 } | |
| 261 | |
| 262 // ============================================================================= | |
| 263 // | |
| 264 void GLCompiler::dropObject (LDObject* obj) | |
| 265 { | |
| 266 auto it = m_objectInfo.find (obj); | |
| 267 | |
| 268 if (it != m_objectInfo.end()) | |
| 269 { | |
| 270 m_objectInfo.erase (it); | |
| 271 needMerge(); | |
| 272 } | |
| 273 } | |
| 274 | |
| 275 // ============================================================================= | |
| 276 // | |
| 277 void GLCompiler::compileObject (LDObject* obj) | |
| 278 { | |
| 279 print ("compiling #%1 (%2, %3)\n", obj->id(), obj->typeName(), obj->origin()); | |
| 280 ObjectVBOInfo info; | |
| 281 dropObject (obj); | |
| 282 compileSubObject (obj, obj, &info); | |
| 283 m_objectInfo[obj] = info; | |
| 284 needMerge(); | |
| 285 print ("#%1 compiled.\n", obj->id()); | |
| 286 } | |
| 287 | |
| 288 // ============================================================================= | |
| 289 // | |
| 290 void GLCompiler::compilePolygon (LDPolygon& poly, LDObject* topobj, ObjectVBOInfo* objinfo) | |
| 291 { | |
| 292 EVBOSurface surface; | |
| 293 int numverts; | |
| 294 | |
| 295 switch (poly.num) | |
| 296 { | |
| 297 case 3: surface = VBOSF_Triangles; numverts = 3; break; | |
| 298 case 4: surface = VBOSF_Quads; numverts = 4; break; | |
| 299 case 2: surface = VBOSF_Lines; numverts = 2; break; | |
| 300 case 5: surface = VBOSF_CondLines; numverts = 2; break; | |
| 301 | |
| 302 default: | |
| 303 print ("OMGWTFBBQ weird polygon with number %1 (topobj: #%2, %3), origin: %4", | |
| 304 (int) poly.num, topobj->id(), topobj->typeName(), poly.origin); | |
| 305 assert (false); | |
| 306 } | |
| 307 | |
| 308 for (int complement = 0; complement < VBOCM_NumComplements; ++complement) | |
| 309 { | |
| 310 const int vbonum = vboNumber (surface, (EVBOComplement) complement); | |
| 311 QVector<GLfloat>& vbodata = objinfo->data[vbonum]; | |
| 312 const QColor normalColor = polygonColor (poly, topobj); | |
| 313 const QColor pickColor = indexColorForID (topobj->id()); | |
| 314 | |
| 315 for (int vert = 0; vert < numverts; ++vert) | |
| 316 { | |
| 317 switch ((EVBOComplement) complement) | |
| 318 { | |
| 319 case VBOCM_Surfaces: | |
| 320 { | |
| 321 // Write coordinates. Apparently Z must be flipped too? | |
| 322 vbodata << poly.vertices[vert].x() | |
| 323 << -poly.vertices[vert].y() | |
| 324 << -poly.vertices[vert].z(); | |
| 325 break; | |
| 326 } | |
| 327 | |
| 328 case VBOCM_NormalColors: | |
| 329 { | |
| 330 writeColor (vbodata, normalColor); | |
| 331 break; | |
| 332 } | |
| 333 | |
| 334 case VBOCM_PickColors: | |
| 335 { | |
| 336 writeColor (vbodata, pickColor); | |
| 337 break; | |
| 338 } | |
| 339 | |
| 340 case VBOCM_BFCFrontColors: | |
| 341 { | |
| 342 writeColor (vbodata, g_BFCFrontColor); | |
| 343 break; | |
| 344 } | |
| 345 | |
| 346 case VBOCM_BFCBackColors: | |
| 347 { | |
| 348 writeColor (vbodata, g_BFCBackColor); | |
| 349 break; | |
| 350 } | |
| 351 | |
| 352 case VBOCM_NumComplements: | |
| 353 break; | |
| 354 } | |
| 355 } | |
| 356 } | |
| 357 } | |
| 358 | |
| 359 // ============================================================================= | |
| 360 // | |
| 361 void GLCompiler::compileSubObject (LDObject* obj, LDObject* topobj, ObjectVBOInfo* objinfo) | |
| 362 { | |
| 363 switch (obj->type()) | |
| 364 { | |
| 365 // Note: We cannot split quads into triangles here, it would mess up the | |
| 366 // wireframe view. Quads must go into separate vbos. | |
| 367 case LDObject::ETriangle: | |
| 368 case LDObject::EQuad: | |
| 369 case LDObject::ELine: | |
| 370 case LDObject::ECondLine: | |
| 371 { | |
| 372 LDPolygon* poly = obj->getPolygon(); | |
| 373 poly->id = topobj->id(); | |
| 374 compilePolygon (*poly, topobj, objinfo); | |
| 375 delete poly; | |
| 376 break; | |
| 377 } | |
| 378 | |
| 379 case LDObject::ESubfile: | |
| 380 { | |
| 381 LDSubfile* ref = static_cast<LDSubfile*> (obj); | |
| 382 auto data = ref->inlinePolygons(); | |
| 383 | |
| 384 for (LDPolygon& poly : data) | |
| 385 { | |
| 386 poly.id = topobj->id(); | |
| 387 compilePolygon (poly, topobj, objinfo); | |
| 388 } | |
| 389 break; | |
| 390 } | |
| 391 | |
| 392 default: | |
| 393 break; | |
| 394 } | |
| 395 } | |
| 396 | |
| 397 // ============================================================================= | |
| 398 // | |
| 399 void GLCompiler::writeColor (QVector<GLfloat>& array, const QColor& color) | |
| 400 { | |
| 401 array << ((float) color.red()) / 255.0f | |
| 402 << ((float) color.green()) / 255.0f | |
| 403 << ((float) color.blue()) / 255.0f | |
| 404 << ((float) color.alpha()) / 255.0f; | |
| 405 } |
