comparison: src/glCompiler.cc
src/glCompiler.cc
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- changeset 935
- 8d98ee0dc917
- parent 930
- ab77deb851fa
- parent 934
- be8128aff739
- child 936
- aee883858c90
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| 930:ab77deb851fa | 935:8d98ee0dc917 |
|---|---|
| 1 /* | |
| 2 * LDForge: LDraw parts authoring CAD | |
| 3 * Copyright (C) 2013 - 2015 Teemu 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 "ldDocument.h" | |
| 26 #include "miscallenous.h" | |
| 27 #include "glRenderer.h" | |
| 28 #include "dialogs.h" | |
| 29 | |
| 30 struct GLErrorInfo | |
| 31 { | |
| 32 GLenum value; | |
| 33 QString text; | |
| 34 }; | |
| 35 | |
| 36 static const GLErrorInfo g_GLErrors[] = | |
| 37 { | |
| 38 { GL_NO_ERROR, "No error" }, | |
| 39 { GL_INVALID_ENUM, "Unacceptable enumerator passed" }, | |
| 40 { GL_INVALID_VALUE, "Numeric argument out of range" }, | |
| 41 { GL_INVALID_OPERATION, "The operation is not allowed to be done in this state" }, | |
| 42 { GL_INVALID_FRAMEBUFFER_OPERATION, "Framebuffer object is not complete"}, | |
| 43 { GL_OUT_OF_MEMORY, "Out of memory" }, | |
| 44 { GL_STACK_UNDERFLOW, "The operation would have caused an underflow" }, | |
| 45 { GL_STACK_OVERFLOW, "The operation would have caused an overflow" }, | |
| 46 }; | |
| 47 | |
| 48 CFGENTRY (String, SelectColorBlend, "#0080FF") | |
| 49 EXTERN_CFGENTRY (Bool, BlackEdges) | |
| 50 EXTERN_CFGENTRY (String, BackgroundColor) | |
| 51 | |
| 52 static QList<int> g_warnedColors; | |
| 53 static const QColor g_BFCFrontColor (64, 192, 80); | |
| 54 static const QColor g_BFCBackColor (208, 64, 64); | |
| 55 | |
| 56 // static QMap<LDObjectPtr, String> g_objectOrigins; | |
| 57 | |
| 58 // ============================================================================= | |
| 59 // | |
| 60 void CheckGLErrorImpl (const char* file, int line) | |
| 61 { | |
| 62 QString errmsg; | |
| 63 GLenum errnum = glGetError(); | |
| 64 | |
| 65 if (errnum == GL_NO_ERROR) | |
| 66 return; | |
| 67 | |
| 68 for (const GLErrorInfo& err : g_GLErrors) | |
| 69 { | |
| 70 if (err.value == errnum) | |
| 71 { | |
| 72 errmsg = err.text; | |
| 73 break; | |
| 74 } | |
| 75 } | |
| 76 | |
| 77 print ("OpenGL ERROR: at %1:%2: %3", Basename (QString (file)), line, errmsg); | |
| 78 } | |
| 79 | |
| 80 // ============================================================================= | |
| 81 // | |
| 82 GLCompiler::GLCompiler (GLRenderer* renderer) : | |
| 83 m_renderer (renderer) | |
| 84 { | |
| 85 needMerge(); | |
| 86 memset (m_vboSizes, 0, sizeof m_vboSizes); | |
| 87 } | |
| 88 | |
| 89 // ============================================================================= | |
| 90 // | |
| 91 void GLCompiler::initialize() | |
| 92 { | |
| 93 initializeOpenGLFunctions(); | |
| 94 glGenBuffers (g_numVBOs, &m_vbo[0]); | |
| 95 CHECK_GL_ERROR(); | |
| 96 } | |
| 97 | |
| 98 // ============================================================================= | |
| 99 // | |
| 100 GLCompiler::~GLCompiler() | |
| 101 { | |
| 102 glDeleteBuffers (g_numVBOs, &m_vbo[0]); | |
| 103 CHECK_GL_ERROR(); | |
| 104 | |
| 105 if (m_renderer != null) | |
| 106 m_renderer->setCompiler (null); | |
| 107 } | |
| 108 | |
| 109 // ============================================================================= | |
| 110 // | |
| 111 uint32 GLCompiler::colorToRGB (const QColor& color) | |
| 112 { | |
| 113 return | |
| 114 (color.red() & 0xFF) << 0x00 | | |
| 115 (color.green() & 0xFF) << 0x08 | | |
| 116 (color.blue() & 0xFF) << 0x10 | | |
| 117 (color.alpha() & 0xFF) << 0x18; | |
| 118 } | |
| 119 | |
| 120 // ============================================================================= | |
| 121 // | |
| 122 QColor GLCompiler::indexColorForID (int id) const | |
| 123 { | |
| 124 // Calculate a color based from this index. This method caters for | |
| 125 // 16777216 objects. I don't think that will be exceeded anytime soon. :) | |
| 126 int r = (id / 0x10000) % 0x100, | |
| 127 g = (id / 0x100) % 0x100, | |
| 128 b = id % 0x100; | |
| 129 | |
| 130 return QColor (r, g, b); | |
| 131 } | |
| 132 | |
| 133 // ============================================================================= | |
| 134 // | |
| 135 QColor GLCompiler::getColorForPolygon (LDPolygon& poly, LDObjectPtr topobj, | |
| 136 EVBOComplement complement) const | |
| 137 { | |
| 138 QColor qcol; | |
| 139 | |
| 140 switch (complement) | |
| 141 { | |
| 142 case VBOCM_Surfaces: | |
| 143 case VBOCM_NumComplements: | |
| 144 return QColor(); | |
| 145 | |
| 146 case VBOCM_BFCFrontColors: | |
| 147 qcol = g_BFCFrontColor; | |
| 148 break; | |
| 149 | |
| 150 case VBOCM_BFCBackColors: | |
| 151 qcol = g_BFCBackColor; | |
| 152 break; | |
| 153 | |
| 154 case VBOCM_PickColors: | |
| 155 return indexColorForID (topobj->id()); | |
| 156 | |
| 157 case VBOCM_RandomColors: | |
| 158 qcol = topobj->randomColor(); | |
| 159 break; | |
| 160 | |
| 161 case VBOCM_NormalColors: | |
| 162 if (poly.color == MainColorIndex) | |
| 163 { | |
| 164 if (topobj->color() == MainColor()) | |
| 165 qcol = GLRenderer::getMainColor(); | |
| 166 else | |
| 167 qcol = topobj->color().faceColor(); | |
| 168 } | |
| 169 elif (poly.color == EdgeColorIndex) | |
| 170 { | |
| 171 qcol = Luma (QColor (cfg::BackgroundColor)) > 40 ? Qt::black : Qt::white; | |
| 172 } | |
| 173 else | |
| 174 { | |
| 175 LDColor col = LDColor::fromIndex (poly.color); | |
| 176 | |
| 177 if (col) | |
| 178 qcol = col.faceColor(); | |
| 179 } | |
| 180 break; | |
| 181 } | |
| 182 | |
| 183 if (not qcol.isValid()) | |
| 184 { | |
| 185 // The color was unknown. Use main color to make the polygon at least | |
| 186 // not appear pitch-black. | |
| 187 if (poly.num != 2 and poly.num != 5) | |
| 188 qcol = GLRenderer::getMainColor(); | |
| 189 else | |
| 190 qcol = Qt::black; | |
| 191 | |
| 192 // Warn about the unknown color, but only once. | |
| 193 if (not g_warnedColors.contains (poly.color)) | |
| 194 { | |
| 195 print ("Unknown color %1!\n", poly.color); | |
| 196 g_warnedColors << poly.color; | |
| 197 } | |
| 198 | |
| 199 return qcol; | |
| 200 } | |
| 201 | |
| 202 double blendAlpha = 0.0; | |
| 203 | |
| 204 if (topobj->isSelected()) | |
| 205 blendAlpha = 1.0; | |
| 206 elif (topobj == m_renderer->objectAtCursor()) | |
| 207 blendAlpha = 0.5; | |
| 208 | |
| 209 if (blendAlpha != 0.0) | |
| 210 { | |
| 211 QColor selcolor (cfg::SelectColorBlend); | |
| 212 double denom = blendAlpha + 1.0; | |
| 213 qcol.setRed ((qcol.red() + (selcolor.red() * blendAlpha)) / denom); | |
| 214 qcol.setGreen ((qcol.green() + (selcolor.green() * blendAlpha)) / denom); | |
| 215 qcol.setBlue ((qcol.blue() + (selcolor.blue() * blendAlpha)) / denom); | |
| 216 } | |
| 217 | |
| 218 return qcol; | |
| 219 } | |
| 220 | |
| 221 // ============================================================================= | |
| 222 // | |
| 223 void GLCompiler::needMerge() | |
| 224 { | |
| 225 for (int i = 0; i < countof (m_vboChanged); ++i) | |
| 226 m_vboChanged[i] = true; | |
| 227 } | |
| 228 | |
| 229 // ============================================================================= | |
| 230 // | |
| 231 void GLCompiler::stageForCompilation (LDObjectPtr obj) | |
| 232 { | |
| 233 /* | |
| 234 g_objectOrigins[obj] = format ("%1:%2 (%3)", | |
| 235 obj->document()->getDisplayName(), obj->lineNumber(), obj->typeName()); | |
| 236 */ | |
| 237 | |
| 238 m_staged << LDObjectWeakPtr (obj); | |
| 239 } | |
| 240 | |
| 241 // ============================================================================= | |
| 242 // | |
| 243 void GLCompiler::unstage (LDObjectPtr obj) | |
| 244 { | |
| 245 m_staged.removeOne (LDObjectWeakPtr (obj)); | |
| 246 } | |
| 247 | |
| 248 // ============================================================================= | |
| 249 // | |
| 250 void GLCompiler::compileDocument (LDDocumentPtr doc) | |
| 251 { | |
| 252 if (doc == null) | |
| 253 return; | |
| 254 | |
| 255 for (LDObjectPtr obj : doc->objects()) | |
| 256 compileObject (obj); | |
| 257 } | |
| 258 | |
| 259 // ============================================================================= | |
| 260 // | |
| 261 void GLCompiler::compileStaged() | |
| 262 { | |
| 263 RemoveDuplicates (m_staged); | |
| 264 | |
| 265 for (auto it = m_staged.begin(); it != m_staged.end(); ++it) | |
| 266 { | |
| 267 if (*it == null) | |
| 268 continue; | |
| 269 | |
| 270 compileObject (*it); | |
| 271 } | |
| 272 | |
| 273 m_staged.clear(); | |
| 274 } | |
| 275 | |
| 276 // ============================================================================= | |
| 277 // | |
| 278 void GLCompiler::prepareVBO (int vbonum) | |
| 279 { | |
| 280 // Compile anything that still awaits it | |
| 281 compileStaged(); | |
| 282 | |
| 283 if (not m_vboChanged[vbonum]) | |
| 284 return; | |
| 285 | |
| 286 QVector<GLfloat> vbodata; | |
| 287 | |
| 288 for (auto it = m_objectInfo.begin(); it != m_objectInfo.end();) | |
| 289 { | |
| 290 if (it.key() == null) | |
| 291 { | |
| 292 it = m_objectInfo.erase (it); | |
| 293 continue; | |
| 294 } | |
| 295 | |
| 296 if (it.key().toStrongRef()->document() == CurrentDocument() | |
| 297 and not it.key().toStrongRef()->isHidden()) | |
| 298 { | |
| 299 vbodata += it->data[vbonum]; | |
| 300 } | |
| 301 | |
| 302 ++it; | |
| 303 } | |
| 304 | |
| 305 glBindBuffer (GL_ARRAY_BUFFER, m_vbo[vbonum]); | |
| 306 glBufferData (GL_ARRAY_BUFFER, vbodata.size() * sizeof(GLfloat), vbodata.constData(), GL_STATIC_DRAW); | |
| 307 glBindBuffer (GL_ARRAY_BUFFER, 0); | |
| 308 CHECK_GL_ERROR(); | |
| 309 m_vboChanged[vbonum] = false; | |
| 310 m_vboSizes[vbonum] = vbodata.size(); | |
| 311 } | |
| 312 | |
| 313 // ============================================================================= | |
| 314 // | |
| 315 void GLCompiler::dropObject (LDObjectPtr obj) | |
| 316 { | |
| 317 auto it = m_objectInfo.find (obj); | |
| 318 | |
| 319 if (it != m_objectInfo.end()) | |
| 320 { | |
| 321 m_objectInfo.erase (it); | |
| 322 needMerge(); | |
| 323 } | |
| 324 | |
| 325 unstage (obj); | |
| 326 } | |
| 327 | |
| 328 // ============================================================================= | |
| 329 // | |
| 330 void GLCompiler::compileObject (LDObjectPtr obj) | |
| 331 { | |
| 332 // print ("Compile %1\n", g_objectOrigins[obj]); | |
| 333 | |
| 334 if (obj == null or obj->document() == null or obj->document().toStrongRef()->isImplicit()) | |
| 335 return; | |
| 336 | |
| 337 ObjectVBOInfo info; | |
| 338 info.isChanged = true; | |
| 339 dropObject (obj); | |
| 340 | |
| 341 switch (obj->type()) | |
| 342 { | |
| 343 // Note: We cannot split quads into triangles here, it would mess up the | |
| 344 // wireframe view. Quads must go into separate vbos. | |
| 345 case OBJ_Triangle: | |
| 346 case OBJ_Quad: | |
| 347 case OBJ_Line: | |
| 348 case OBJ_CondLine: | |
| 349 { | |
| 350 LDPolygon* poly = obj->getPolygon(); | |
| 351 poly->id = obj->id(); | |
| 352 compilePolygon (*poly, obj, &info); | |
| 353 delete poly; | |
| 354 break; | |
| 355 } | |
| 356 | |
| 357 case OBJ_Subfile: | |
| 358 { | |
| 359 LDSubfilePtr ref = obj.staticCast<LDSubfile>(); | |
| 360 auto data = ref->inlinePolygons(); | |
| 361 | |
| 362 for (LDPolygon& poly : data) | |
| 363 { | |
| 364 poly.id = obj->id(); | |
| 365 compilePolygon (poly, obj, &info); | |
| 366 } | |
| 367 break; | |
| 368 } | |
| 369 | |
| 370 default: | |
| 371 break; | |
| 372 } | |
| 373 | |
| 374 m_objectInfo[obj] = info; | |
| 375 needMerge(); | |
| 376 } | |
| 377 | |
| 378 // ============================================================================= | |
| 379 // | |
| 380 void GLCompiler::compilePolygon (LDPolygon& poly, LDObjectPtr topobj, ObjectVBOInfo* objinfo) | |
| 381 { | |
| 382 EVBOSurface surface; | |
| 383 int numverts; | |
| 384 | |
| 385 switch (poly.num) | |
| 386 { | |
| 387 case 2: surface = VBOSF_Lines; numverts = 2; break; | |
| 388 case 3: surface = VBOSF_Triangles; numverts = 3; break; | |
| 389 case 4: surface = VBOSF_Quads; numverts = 4; break; | |
| 390 case 5: surface = VBOSF_CondLines; numverts = 2; break; | |
| 391 default: return; | |
| 392 } | |
| 393 | |
| 394 for (EVBOComplement complement = VBOCM_First; complement < VBOCM_NumComplements; ++complement) | |
| 395 { | |
| 396 const int vbonum = vboNumber (surface, complement); | |
| 397 QVector<GLfloat>& vbodata = objinfo->data[vbonum]; | |
| 398 const QColor color = getColorForPolygon (poly, topobj, complement); | |
| 399 | |
| 400 for (int vert = 0; vert < numverts; ++vert) | |
| 401 { | |
| 402 if (complement == VBOCM_Surfaces) | |
| 403 { | |
| 404 // Write coordinates. Apparently Z must be flipped too? | |
| 405 vbodata << poly.vertices[vert].x() | |
| 406 << -poly.vertices[vert].y() | |
| 407 << -poly.vertices[vert].z(); | |
| 408 } | |
| 409 else | |
| 410 { | |
| 411 vbodata << ((GLfloat) color.red()) / 255.0f | |
| 412 << ((GLfloat) color.green()) / 255.0f | |
| 413 << ((GLfloat) color.blue()) / 255.0f | |
| 414 << ((GLfloat) color.alpha()) / 255.0f; | |
| 415 } | |
| 416 } | |
| 417 } | |
| 418 } | |
| 419 | |
| 420 void GLCompiler::setRenderer (GLRenderer* renderer) | |
| 421 { | |
| 422 m_renderer = renderer; | |
| 423 } |
