| 1 | // Created on: 2011-07-13 |
| 2 | // Created by: Sergey ZERCHANINOV |
| 3 | // Copyright (c) 2011-2013 OPEN CASCADE SAS |
| 4 | // |
| 5 | // The content of this file is subject to the Open CASCADE Technology Public |
| 6 | // License Version 6.5 (the "License"). You may not use the content of this file |
| 7 | // except in compliance with the License. Please obtain a copy of the License |
| 8 | // at http://www.opencascade.org and read it completely before using this file. |
| 9 | // |
| 10 | // The Initial Developer of the Original Code is Open CASCADE S.A.S., having its |
| 11 | // main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France. |
| 12 | // |
| 13 | // The Original Code and all software distributed under the License is |
| 14 | // distributed on an "AS IS" basis, without warranty of any kind, and the |
| 15 | // Initial Developer hereby disclaims all such warranties, including without |
| 16 | // limitation, any warranties of merchantability, fitness for a particular |
| 17 | // purpose or non-infringement. Please see the License for the specific terms |
| 18 | // and conditions governing the rights and limitations under the License. |
| 19 | |
| 20 | #include <OpenGl_IndexBuffer.hxx> |
| 21 | #include <OpenGl_Context.hxx> |
| 22 | |
| 23 | #include <OpenGl_PrimitiveArray.hxx> |
| 24 | |
| 25 | #include <OpenGl_AspectFace.hxx> |
| 26 | #include <OpenGl_GraphicDriver.hxx> |
| 27 | #include <OpenGl_PointSprite.hxx> |
| 28 | #include <OpenGl_Structure.hxx> |
| 29 | #include <OpenGl_Workspace.hxx> |
| 30 | |
| 31 | #include <InterfaceGraphic_PrimitiveArray.hxx> |
| 32 | |
| 33 | // ======================================================================= |
| 34 | // function : clearMemoryOwn |
| 35 | // purpose : |
| 36 | // ======================================================================= |
| 37 | void OpenGl_PrimitiveArray::clearMemoryOwn() const |
| 38 | { |
| 39 | Standard::Free ((Standard_Address& )myPArray->edges); |
| 40 | Standard::Free ((Standard_Address& )myPArray->vertices); |
| 41 | Standard::Free ((Standard_Address& )myPArray->vcolours); |
| 42 | Standard::Free ((Standard_Address& )myPArray->vnormals); |
| 43 | Standard::Free ((Standard_Address& )myPArray->vtexels); |
| 44 | Standard::Free ((Standard_Address& )myPArray->edge_vis); /// ??? |
| 45 | |
| 46 | myPArray->edges = NULL; |
| 47 | myPArray->vertices = NULL; |
| 48 | myPArray->vcolours = NULL; |
| 49 | myPArray->vnormals = NULL; |
| 50 | myPArray->vtexels = NULL; |
| 51 | myPArray->edge_vis = NULL; |
| 52 | } |
| 53 | |
| 54 | // ======================================================================= |
| 55 | // function : clearMemoryGL |
| 56 | // purpose : |
| 57 | // ======================================================================= |
| 58 | void OpenGl_PrimitiveArray::clearMemoryGL (const Handle(OpenGl_Context)& theGlCtx) const |
| 59 | { |
| 60 | for (Standard_Integer anIter = 0; anIter < VBOMaxType; ++anIter) |
| 61 | { |
| 62 | if (!myVbos[anIter].IsNull()) |
| 63 | { |
| 64 | myVbos[anIter]->Release (theGlCtx.operator->()); |
| 65 | myVbos[anIter].Nullify(); |
| 66 | } |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | // ======================================================================= |
| 71 | // function : BuildVBO |
| 72 | // purpose : |
| 73 | // ======================================================================= |
| 74 | Standard_Boolean OpenGl_PrimitiveArray::BuildVBO (const Handle(OpenGl_Workspace)& theWorkspace) const |
| 75 | { |
| 76 | const Handle(OpenGl_Context)& aGlCtx = theWorkspace->GetGlContext(); |
| 77 | if (myPArray->vertices == NULL) |
| 78 | { |
| 79 | // vertices should be always defined - others are optional |
| 80 | return Standard_False; |
| 81 | } |
| 82 | myVbos[VBOVertices] = new OpenGl_VertexBuffer(); |
| 83 | if (!myVbos[VBOVertices]->Init (aGlCtx, 3, myPArray->num_vertexs, &myPArray->vertices[0].xyz[0])) |
| 84 | { |
| 85 | clearMemoryGL (aGlCtx); |
| 86 | return Standard_False; |
| 87 | } |
| 88 | |
| 89 | if (myPArray->edges != NULL |
| 90 | && myPArray->num_edges > 0) |
| 91 | { |
| 92 | myVbos[VBOEdges] = new OpenGl_IndexBuffer(); |
| 93 | if (!myVbos[VBOEdges]->Init (aGlCtx, 1, myPArray->num_edges, (GLuint* )myPArray->edges)) |
| 94 | { |
| 95 | clearMemoryGL (aGlCtx); |
| 96 | return Standard_False; |
| 97 | } |
| 98 | } |
| 99 | if (myPArray->vcolours != NULL) |
| 100 | { |
| 101 | myVbos[VBOVcolours] = new OpenGl_VertexBuffer(); |
| 102 | if (!myVbos[VBOVcolours]->Init (aGlCtx, 4, myPArray->num_vertexs, (GLubyte* )myPArray->vcolours)) |
| 103 | { |
| 104 | clearMemoryGL (aGlCtx); |
| 105 | return Standard_False; |
| 106 | } |
| 107 | } |
| 108 | if (myPArray->vnormals != NULL) |
| 109 | { |
| 110 | myVbos[VBOVnormals] = new OpenGl_VertexBuffer(); |
| 111 | if (!myVbos[VBOVnormals]->Init (aGlCtx, 3, myPArray->num_vertexs, &myPArray->vnormals[0].xyz[0])) |
| 112 | { |
| 113 | clearMemoryGL (aGlCtx); |
| 114 | return Standard_False; |
| 115 | } |
| 116 | } |
| 117 | if (myPArray->vtexels) |
| 118 | { |
| 119 | myVbos[VBOVtexels] = new OpenGl_VertexBuffer(); |
| 120 | if (!myVbos[VBOVtexels]->Init (aGlCtx, 2, myPArray->num_vertexs, &myPArray->vtexels[0].xy[0])) |
| 121 | { |
| 122 | clearMemoryGL (aGlCtx); |
| 123 | return Standard_False; |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | clearMemoryOwn(); |
| 128 | return Standard_True; |
| 129 | } |
| 130 | |
| 131 | // ======================================================================= |
| 132 | // function : DrawArray |
| 133 | // purpose : |
| 134 | // ======================================================================= |
| 135 | void OpenGl_PrimitiveArray::DrawArray (Tint theLightingModel, |
| 136 | const Aspect_InteriorStyle theInteriorStyle, |
| 137 | Tint theEdgeFlag, |
| 138 | const TEL_COLOUR* theInteriorColour, |
| 139 | const TEL_COLOUR* theLineColour, |
| 140 | const TEL_COLOUR* theEdgeColour, |
| 141 | const OPENGL_SURF_PROP* theFaceProp, |
| 142 | const Handle(OpenGl_Workspace)& theWorkspace) const |
| 143 | { |
| 144 | const Handle(OpenGl_Context)& aGlContext = theWorkspace->GetGlContext(); |
| 145 | |
| 146 | Tint i,n; |
| 147 | Tint transp = 0; |
| 148 | // Following pointers have been provided for performance improvement |
| 149 | tel_colour pfc = myPArray->fcolours; |
| 150 | Tint* pvc = myPArray->vcolours; |
| 151 | if (pvc != NULL) |
| 152 | { |
| 153 | for (i = 0; i < myPArray->num_vertexs; ++i) |
| 154 | { |
| 155 | transp = int(theFaceProp->trans * 255.0f); |
| 156 | #if defined (sparc) || defined (__sparc__) || defined (__sparc) |
| 157 | pvc[i] = (pvc[i] & 0xffffff00); |
| 158 | pvc[i] += transp; |
| 159 | #else |
| 160 | pvc[i] = (pvc[i] & 0x00ffffff); |
| 161 | pvc[i] += transp << 24; |
| 162 | #endif |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | switch (myPArray->type) |
| 167 | { |
| 168 | case TelPointsArrayType: |
| 169 | case TelPolylinesArrayType: |
| 170 | case TelSegmentsArrayType: |
| 171 | glColor3fv (theLineColour->rgb); |
| 172 | break; |
| 173 | case TelPolygonsArrayType: |
| 174 | case TelTrianglesArrayType: |
| 175 | case TelQuadranglesArrayType: |
| 176 | case TelTriangleStripsArrayType: |
| 177 | case TelQuadrangleStripsArrayType: |
| 178 | case TelTriangleFansArrayType: |
| 179 | glColor3fv (theInteriorColour->rgb); |
| 180 | break; |
| 181 | } |
| 182 | |
| 183 | // Temporarily disable environment mapping |
| 184 | if (myDrawMode <= GL_LINE_STRIP) |
| 185 | { |
| 186 | glPushAttrib (GL_ENABLE_BIT); |
| 187 | glDisable (GL_TEXTURE_1D); |
| 188 | glDisable (GL_TEXTURE_2D); |
| 189 | } |
| 190 | |
| 191 | if ((myDrawMode > GL_LINE_STRIP && theInteriorStyle != Aspect_IS_EMPTY) || |
| 192 | (myDrawMode <= GL_LINE_STRIP)) |
| 193 | { |
| 194 | if (theWorkspace->NamedStatus & OPENGL_NS_HIGHLIGHT) |
| 195 | { |
| 196 | pfc = NULL; |
| 197 | pvc = NULL; |
| 198 | } |
| 199 | |
| 200 | if (theInteriorStyle == Aspect_IS_HIDDENLINE) |
| 201 | { |
| 202 | theEdgeFlag = 1; |
| 203 | pfc = NULL; |
| 204 | pvc = NULL; |
| 205 | } |
| 206 | |
| 207 | // Sometimes the GL_LIGHTING mode is activated here |
| 208 | // without glEnable(GL_LIGHTING) call for an unknown reason, so it is necessary |
| 209 | // to call glEnable(GL_LIGHTING) to synchronize Light On/Off mechanism* |
| 210 | if (theLightingModel == 0 || myDrawMode <= GL_LINE_STRIP) |
| 211 | glDisable (GL_LIGHTING); |
| 212 | else |
| 213 | glEnable (GL_LIGHTING); |
| 214 | |
| 215 | if (!toDrawVbo()) |
| 216 | { |
| 217 | if (myPArray->vertices != NULL) |
| 218 | { |
| 219 | glVertexPointer (3, GL_FLOAT, 0, myPArray->vertices); // array of vertices |
| 220 | glEnableClientState (GL_VERTEX_ARRAY); |
| 221 | } |
| 222 | if (myPArray->vnormals != NULL) |
| 223 | { |
| 224 | glNormalPointer (GL_FLOAT, 0, myPArray->vnormals); // array of normals |
| 225 | glEnableClientState (GL_NORMAL_ARRAY); |
| 226 | } |
| 227 | if (myPArray->vtexels != NULL) |
| 228 | { |
| 229 | glTexCoordPointer (2, GL_FLOAT, 0, myPArray->vtexels); // array of texture coordinates |
| 230 | glEnableClientState (GL_TEXTURE_COORD_ARRAY); |
| 231 | } |
| 232 | |
| 233 | if ((pvc != NULL) && (theWorkspace->NamedStatus & OPENGL_NS_HIGHLIGHT) == 0) |
| 234 | { |
| 235 | glColorPointer (4, GL_UNSIGNED_BYTE, 0, pvc); // array of colors |
| 236 | glEnableClientState (GL_COLOR_ARRAY); |
| 237 | glColorMaterial (GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE); |
| 238 | glEnable (GL_COLOR_MATERIAL); |
| 239 | } |
| 240 | } |
| 241 | else |
| 242 | { |
| 243 | // Bindings concrete pointer in accordance with VBO buffer |
| 244 | myVbos[VBOVertices]->BindFixed (aGlContext, GL_VERTEX_ARRAY); |
| 245 | if (!myVbos[VBOVnormals].IsNull()) |
| 246 | { |
| 247 | myVbos[VBOVnormals]->BindFixed (aGlContext, GL_NORMAL_ARRAY); |
| 248 | } |
| 249 | if (!myVbos[VBOVtexels].IsNull() && (theWorkspace->NamedStatus & OPENGL_NS_FORBIDSETTEX) == 0) |
| 250 | { |
| 251 | myVbos[VBOVtexels]->BindFixed (aGlContext, GL_TEXTURE_COORD_ARRAY); |
| 252 | } |
| 253 | if (!myVbos[VBOVcolours].IsNull() && (theWorkspace->NamedStatus & OPENGL_NS_HIGHLIGHT) == 0) |
| 254 | { |
| 255 | myVbos[VBOVcolours]->BindFixed (aGlContext, GL_COLOR_ARRAY); |
| 256 | glColorMaterial (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE); |
| 257 | glEnable (GL_COLOR_MATERIAL); |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | /// OCC22236 NOTE: draw for all situations: |
| 262 | /// 1) draw elements from myPArray->bufferVBO[VBOEdges] indicies array |
| 263 | /// 2) draw elements from vertice array, when bounds defines count of primitive's verts. |
| 264 | /// 3) draw primitive by vertexes if no edges and bounds array is specified |
| 265 | if (toDrawVbo()) |
| 266 | { |
| 267 | if (!myVbos[VBOEdges].IsNull()) |
| 268 | { |
| 269 | myVbos[VBOEdges]->Bind (aGlContext); |
| 270 | if (myPArray->num_bounds > 0) |
| 271 | { |
| 272 | // draw primitives by vertex count with the indicies |
| 273 | Tint* anOffset = NULL; |
| 274 | for (i = 0; i < myPArray->num_bounds; ++i) |
| 275 | { |
| 276 | if (pfc != NULL) glColor3fv (pfc[i].rgb); |
| 277 | glDrawElements (myDrawMode, myPArray->bounds[i], myVbos[VBOEdges]->GetDataType(), anOffset); |
| 278 | anOffset += myPArray->bounds[i]; |
| 279 | } |
| 280 | } |
| 281 | else |
| 282 | { |
| 283 | // draw one (or sequential) primitive by the indicies |
| 284 | glDrawElements (myDrawMode, myPArray->num_edges, myVbos[VBOEdges]->GetDataType(), NULL); |
| 285 | } |
| 286 | myVbos[VBOEdges]->Unbind (aGlContext); |
| 287 | } |
| 288 | else if (myPArray->num_bounds > 0) |
| 289 | { |
| 290 | for (i = n = 0; i < myPArray->num_bounds; ++i) |
| 291 | { |
| 292 | if (pfc != NULL) glColor3fv (pfc[i].rgb); |
| 293 | glDrawArrays (myDrawMode, n, myPArray->bounds[i]); |
| 294 | n += myPArray->bounds[i]; |
| 295 | } |
| 296 | } |
| 297 | else |
| 298 | { |
| 299 | if (myDrawMode == GL_POINTS) |
| 300 | { |
| 301 | DrawMarkers (theWorkspace); |
| 302 | } |
| 303 | else |
| 304 | { |
| 305 | glDrawArrays (myDrawMode, 0, myVbos[VBOVertices]->GetElemsNb()); |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | // bind with 0 |
| 310 | myVbos[VBOVertices]->UnbindFixed (aGlContext, GL_VERTEX_ARRAY); |
| 311 | if (!myVbos[VBOVnormals].IsNull()) |
| 312 | { |
| 313 | myVbos[VBOVnormals]->UnbindFixed (aGlContext, GL_NORMAL_ARRAY); |
| 314 | } |
| 315 | if (!myVbos[VBOVtexels].IsNull() && (theWorkspace->NamedStatus & OPENGL_NS_FORBIDSETTEX) == 0) |
| 316 | { |
| 317 | myVbos[VBOVtexels]->UnbindFixed (aGlContext, GL_TEXTURE_COORD_ARRAY); |
| 318 | } |
| 319 | if (!myVbos[VBOVcolours].IsNull()) |
| 320 | { |
| 321 | myVbos[VBOVcolours]->UnbindFixed (aGlContext, GL_COLOR_ARRAY); |
| 322 | glDisable (GL_COLOR_MATERIAL); |
| 323 | theWorkspace->NamedStatus |= OPENGL_NS_RESMAT; // Reset material |
| 324 | } |
| 325 | } |
| 326 | else |
| 327 | { |
| 328 | if (myPArray->num_bounds > 0) |
| 329 | { |
| 330 | if (myPArray->num_edges > 0) |
| 331 | { |
| 332 | for (i = n = 0; i < myPArray->num_bounds; ++i) |
| 333 | { |
| 334 | if (pfc != NULL) glColor3fv (pfc[i].rgb); |
| 335 | glDrawElements (myDrawMode, myPArray->bounds[i], GL_UNSIGNED_INT, (GLenum* )&myPArray->edges[n]); |
| 336 | n += myPArray->bounds[i]; |
| 337 | } |
| 338 | } |
| 339 | else |
| 340 | { |
| 341 | for (i = n = 0; i < myPArray->num_bounds; ++i) |
| 342 | { |
| 343 | if (pfc != NULL) glColor3fv (pfc[i].rgb); |
| 344 | glDrawArrays (myDrawMode, n, myPArray->bounds[i]); |
| 345 | n += myPArray->bounds[i]; |
| 346 | } |
| 347 | } |
| 348 | } |
| 349 | else if (myPArray->num_edges > 0) |
| 350 | { |
| 351 | glDrawElements (myDrawMode, myPArray->num_edges, GL_UNSIGNED_INT, (GLenum* )myPArray->edges); |
| 352 | } |
| 353 | else |
| 354 | { |
| 355 | if (myDrawMode == GL_POINTS) |
| 356 | { |
| 357 | DrawMarkers (theWorkspace); |
| 358 | } |
| 359 | else |
| 360 | { |
| 361 | glDrawArrays (myDrawMode, 0, myPArray->num_vertexs); |
| 362 | } |
| 363 | } |
| 364 | |
| 365 | if (pvc != NULL) |
| 366 | { |
| 367 | glDisable (GL_COLOR_MATERIAL); |
| 368 | theWorkspace->NamedStatus |= OPENGL_NS_RESMAT; // Reset material |
| 369 | } |
| 370 | |
| 371 | glDisableClientState (GL_VERTEX_ARRAY); |
| 372 | if (myPArray->vcolours != NULL) |
| 373 | glDisableClientState (GL_COLOR_ARRAY); |
| 374 | if (myPArray->vnormals != NULL) |
| 375 | glDisableClientState (GL_NORMAL_ARRAY); |
| 376 | if (myPArray->vtexels != NULL) |
| 377 | glDisableClientState (GL_TEXTURE_COORD_ARRAY); |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | // On some NVIDIA graphic cards, using glEdgeFlagPointer() in |
| 382 | // combination with VBO (edge flag data put into a VBO buffer) |
| 383 | // leads to a crash in a driver. Therefore, edge flags are simply |
| 384 | // igonored when VBOs are enabled, so all the edges are drawn if |
| 385 | // edge visibility is turned on. In order to draw edges selectively, |
| 386 | // either disable VBO or turn off edge visibilty in the current |
| 387 | // primitive array and create a separate primitive array (segments) |
| 388 | // and put edges to be drawn into it. |
| 389 | if (theEdgeFlag && myDrawMode > GL_LINE_STRIP) |
| 390 | { |
| 391 | DrawEdges (theEdgeColour, theWorkspace); |
| 392 | } |
| 393 | |
| 394 | if (myDrawMode <= GL_LINE_STRIP) |
| 395 | glPopAttrib(); |
| 396 | } |
| 397 | |
| 398 | // ======================================================================= |
| 399 | // function : DrawEdges |
| 400 | // purpose : |
| 401 | // ======================================================================= |
| 402 | void OpenGl_PrimitiveArray::DrawEdges (const TEL_COLOUR* theEdgeColour, |
| 403 | const Handle(OpenGl_Workspace)& theWorkspace) const |
| 404 | { |
| 405 | glDisable (GL_LIGHTING); |
| 406 | |
| 407 | const Handle(OpenGl_Context)& aGlContext = theWorkspace->GetGlContext(); |
| 408 | const OpenGl_AspectLine* anAspectLineOld = NULL; |
| 409 | if (myDrawMode > GL_LINE_STRIP) |
| 410 | { |
| 411 | anAspectLineOld = theWorkspace->SetAspectLine (theWorkspace->AspectFace (Standard_True)->AspectEdge()); |
| 412 | theWorkspace->AspectLine (Standard_True); |
| 413 | |
| 414 | glPushAttrib (GL_POLYGON_BIT); |
| 415 | glPolygonMode (GL_FRONT_AND_BACK, GL_LINE); |
| 416 | } |
| 417 | |
| 418 | Tint i, j, n; |
| 419 | |
| 420 | /// OCC22236 NOTE: draw edges for all situations: |
| 421 | /// 1) draw elements with GL_LINE style as edges from myPArray->bufferVBO[VBOEdges] indicies array |
| 422 | /// 2) draw elements from vertice array, when bounds defines count of primitive's verts. |
| 423 | /// 3) draw primitive's edges by vertexes if no edges and bounds array is specified |
| 424 | if (toDrawVbo()) |
| 425 | { |
| 426 | myVbos[VBOVertices]->BindFixed (aGlContext, GL_VERTEX_ARRAY); |
| 427 | glColor3fv (theEdgeColour->rgb); |
| 428 | if (!myVbos[VBOEdges].IsNull()) |
| 429 | { |
| 430 | myVbos[VBOEdges]->Bind (aGlContext); |
| 431 | |
| 432 | // draw primitives by vertex count with the indicies |
| 433 | if (myPArray->num_bounds > 0) |
| 434 | { |
| 435 | Tint* offset = 0; |
| 436 | for (i = 0, offset = 0; i < myPArray->num_bounds; ++i) |
| 437 | { |
| 438 | glDrawElements (myDrawMode, myPArray->bounds[i], myVbos[VBOEdges]->GetDataType(), offset); |
| 439 | offset += myPArray->bounds[i]; |
| 440 | } |
| 441 | } |
| 442 | // draw one (or sequential) primitive by the indicies |
| 443 | else |
| 444 | { |
| 445 | glDrawElements (myDrawMode, myVbos[VBOEdges]->GetElemsNb(), myVbos[VBOEdges]->GetDataType(), NULL); |
| 446 | } |
| 447 | myVbos[VBOEdges]->Unbind (aGlContext); |
| 448 | } |
| 449 | else if (myPArray->num_bounds > 0) |
| 450 | { |
| 451 | for (i = n = 0; i < myPArray->num_bounds; ++i) |
| 452 | { |
| 453 | glDrawArrays (myDrawMode, n, myPArray->bounds[i]); |
| 454 | n += myPArray->bounds[i]; |
| 455 | } |
| 456 | } |
| 457 | else |
| 458 | { |
| 459 | glDrawArrays (myDrawMode, 0, myPArray->num_vertexs); |
| 460 | } |
| 461 | |
| 462 | // unbind buffers |
| 463 | myVbos[VBOVertices]->UnbindFixed (aGlContext, GL_VERTEX_ARRAY); |
| 464 | } |
| 465 | else |
| 466 | { |
| 467 | glEnableClientState (GL_VERTEX_ARRAY); |
| 468 | glVertexPointer (3, GL_FLOAT, 0, myPArray->vertices); // array of vertices |
| 469 | |
| 470 | glColor3fv (theEdgeColour->rgb); |
| 471 | if (myPArray->num_bounds > 0) |
| 472 | { |
| 473 | if (myPArray->num_edges > 0) |
| 474 | { |
| 475 | for (i = n = 0; i < myPArray->num_bounds; ++i) |
| 476 | { |
| 477 | if (myPArray->edge_vis) |
| 478 | { |
| 479 | glBegin (myDrawMode); |
| 480 | for (j = 0; j < myPArray->bounds[i]; ++j) |
| 481 | { |
| 482 | glEdgeFlag (myPArray->edge_vis[n+j]); |
| 483 | glVertex3fv (&myPArray->vertices[myPArray->edges[n+j]].xyz[0]); |
| 484 | } |
| 485 | glEnd(); |
| 486 | } |
| 487 | else |
| 488 | { |
| 489 | glDrawElements (myDrawMode, myPArray->bounds[i], GL_UNSIGNED_INT, (GLenum* )&myPArray->edges[n]); |
| 490 | } |
| 491 | n += myPArray->bounds[i]; |
| 492 | } |
| 493 | } |
| 494 | else |
| 495 | { |
| 496 | for (i = n = 0 ; i < myPArray->num_bounds; ++i) |
| 497 | { |
| 498 | glDrawArrays (myDrawMode, n, myPArray->bounds[i]); |
| 499 | n += myPArray->bounds[i]; |
| 500 | } |
| 501 | } |
| 502 | } |
| 503 | else if (myPArray->num_edges > 0) |
| 504 | { |
| 505 | if (myPArray->edge_vis) |
| 506 | { |
| 507 | glBegin (myDrawMode); |
| 508 | for (i = 0; i < myPArray->num_edges; ++i) |
| 509 | { |
| 510 | glEdgeFlag (myPArray->edge_vis[i]); |
| 511 | glVertex3fv (&myPArray->vertices[myPArray->edges[i]].xyz[0]); |
| 512 | } |
| 513 | glEnd(); |
| 514 | } |
| 515 | else |
| 516 | { |
| 517 | glDrawElements (myDrawMode, myPArray->num_edges, GL_UNSIGNED_INT, (GLenum* )myPArray->edges); |
| 518 | } |
| 519 | } |
| 520 | else |
| 521 | { |
| 522 | glDrawArrays (myDrawMode, 0, myPArray->num_vertexs); |
| 523 | } |
| 524 | } |
| 525 | |
| 526 | if (myDrawMode > GL_LINE_STRIP) |
| 527 | { |
| 528 | // Restore line context |
| 529 | theWorkspace->SetAspectLine (anAspectLineOld); |
| 530 | glPopAttrib(); |
| 531 | } |
| 532 | } |
| 533 | |
| 534 | // ======================================================================= |
| 535 | // function : DrawMarkers |
| 536 | // purpose : |
| 537 | // ======================================================================= |
| 538 | void OpenGl_PrimitiveArray::DrawMarkers (const Handle(OpenGl_Workspace)& theWorkspace) const |
| 539 | { |
| 540 | const OpenGl_AspectMarker* anAspectMarker = theWorkspace->AspectMarker (Standard_True); |
| 541 | const Handle(OpenGl_Context)& aCtx = theWorkspace->GetGlContext(); |
| 542 | const Handle(OpenGl_PointSprite)& aSpriteNorm = anAspectMarker->Sprite(); |
| 543 | const Standard_Boolean isHilight = (theWorkspace->NamedStatus & OPENGL_NS_HIGHLIGHT); |
| 544 | if (aCtx->IsGlGreaterEqual (2, 0) |
| 545 | && !aSpriteNorm.IsNull() && !aSpriteNorm->IsDisplayList()) |
| 546 | { |
| 547 | // Textured markers will be drawn with the point sprites |
| 548 | glPointSize (anAspectMarker->MarkerSize()); |
| 549 | |
| 550 | Handle(OpenGl_Texture) aTextureBack; |
| 551 | if (anAspectMarker->Type() != Aspect_TOM_POINT) |
| 552 | { |
| 553 | const Handle(OpenGl_PointSprite)& aSprite = (isHilight && anAspectMarker->SpriteHighlight()->IsValid()) |
| 554 | ? anAspectMarker->SpriteHighlight() |
| 555 | : aSpriteNorm; |
| 556 | aTextureBack = theWorkspace->EnableTexture (aSprite); |
| 557 | |
| 558 | glEnable (GL_ALPHA_TEST); |
| 559 | glAlphaFunc (GL_GEQUAL, 0.1f); |
| 560 | |
| 561 | glEnable (GL_BLEND); |
| 562 | glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
| 563 | } |
| 564 | |
| 565 | glDrawArrays (myDrawMode, 0, toDrawVbo() ? myVbos[VBOVertices]->GetElemsNb() : myPArray->num_vertexs); |
| 566 | |
| 567 | glDisable (GL_BLEND); |
| 568 | glDisable (GL_ALPHA_TEST); |
| 569 | if (anAspectMarker->Type() != Aspect_TOM_POINT) |
| 570 | { |
| 571 | theWorkspace->EnableTexture (aTextureBack); |
| 572 | } |
| 573 | glPointSize (1.0f); |
| 574 | return; |
| 575 | } |
| 576 | |
| 577 | // Textured markers will be drawn with the glBitmap |
| 578 | if (anAspectMarker->Type() == Aspect_TOM_POINT |
| 579 | || anAspectMarker->Type() == Aspect_TOM_O_POINT) |
| 580 | { |
| 581 | const GLfloat aPntSize = anAspectMarker->Type() == Aspect_TOM_POINT |
| 582 | ? anAspectMarker->MarkerSize() |
| 583 | : 0.0f; |
| 584 | if (aPntSize > 0.0f) |
| 585 | { |
| 586 | glPointSize (aPntSize); |
| 587 | } |
| 588 | glDrawArrays (myDrawMode, 0, toDrawVbo() ? myVbos[VBOVertices]->GetElemsNb() : myPArray->num_vertexs); |
| 589 | if (aPntSize > 0.0f) |
| 590 | { |
| 591 | glPointSize (1.0f); |
| 592 | } |
| 593 | } |
| 594 | |
| 595 | if (anAspectMarker->Type() != Aspect_TOM_POINT |
| 596 | && !aSpriteNorm.IsNull()) |
| 597 | { |
| 598 | if (!isHilight && (myPArray->vcolours != NULL)) |
| 599 | { |
| 600 | for (Standard_Integer anIter = 0; anIter < myPArray->num_vertexs; anIter++) |
| 601 | { |
| 602 | glColor4ubv ((GLubyte* )&myPArray->vcolours[anIter]); |
| 603 | glRasterPos3fv (myPArray->vertices[anIter].xyz); |
| 604 | aSpriteNorm->DrawBitmap (theWorkspace->GetGlContext()); |
| 605 | } |
| 606 | } |
| 607 | else |
| 608 | { |
| 609 | for (Standard_Integer anIter = 0; anIter < myPArray->num_vertexs; anIter++) |
| 610 | { |
| 611 | glRasterPos3fv (myPArray->vertices[anIter].xyz); |
| 612 | aSpriteNorm->DrawBitmap (theWorkspace->GetGlContext()); |
| 613 | } |
| 614 | } |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | // ======================================================================= |
| 619 | // function : OpenGl_PrimitiveArray |
| 620 | // purpose : |
| 621 | // ======================================================================= |
| 622 | OpenGl_PrimitiveArray::OpenGl_PrimitiveArray (CALL_DEF_PARRAY* thePArray) |
| 623 | : myPArray (thePArray), |
| 624 | myDrawMode (DRAW_MODE_NONE), |
| 625 | myIsVboInit (Standard_False) |
| 626 | { |
| 627 | switch (myPArray->type) |
| 628 | { |
| 629 | case TelPointsArrayType: |
| 630 | myDrawMode = GL_POINTS; |
| 631 | break; |
| 632 | case TelPolylinesArrayType: |
| 633 | myDrawMode = GL_LINE_STRIP; |
| 634 | break; |
| 635 | case TelSegmentsArrayType: |
| 636 | myDrawMode = GL_LINES; |
| 637 | break; |
| 638 | case TelPolygonsArrayType: |
| 639 | myDrawMode = GL_POLYGON; |
| 640 | break; |
| 641 | case TelTrianglesArrayType: |
| 642 | myDrawMode = GL_TRIANGLES; |
| 643 | break; |
| 644 | case TelQuadranglesArrayType: |
| 645 | myDrawMode = GL_QUADS; |
| 646 | break; |
| 647 | case TelTriangleStripsArrayType: |
| 648 | myDrawMode = GL_TRIANGLE_STRIP; |
| 649 | break; |
| 650 | case TelQuadrangleStripsArrayType: |
| 651 | myDrawMode = GL_QUAD_STRIP; |
| 652 | break; |
| 653 | case TelTriangleFansArrayType: |
| 654 | myDrawMode = GL_TRIANGLE_FAN; |
| 655 | break; |
| 656 | } |
| 657 | } |
| 658 | |
| 659 | // ======================================================================= |
| 660 | // function : ~OpenGl_PrimitiveArray |
| 661 | // purpose : |
| 662 | // ======================================================================= |
| 663 | OpenGl_PrimitiveArray::~OpenGl_PrimitiveArray() |
| 664 | { |
| 665 | // |
| 666 | } |
| 667 | |
| 668 | // ======================================================================= |
| 669 | // function : Release |
| 670 | // purpose : |
| 671 | // ======================================================================= |
| 672 | void OpenGl_PrimitiveArray::Release (const Handle(OpenGl_Context)& theContext) |
| 673 | { |
| 674 | for (Standard_Integer anIter = 0; anIter < VBOMaxType; ++anIter) |
| 675 | { |
| 676 | if (!myVbos[anIter].IsNull()) |
| 677 | { |
| 678 | if (!theContext.IsNull()) |
| 679 | { |
| 680 | theContext->DelayedRelease (myVbos[anIter]); |
| 681 | } |
| 682 | myVbos[anIter].Nullify(); |
| 683 | } |
| 684 | } |
| 685 | } |
| 686 | |
| 687 | // ======================================================================= |
| 688 | // function : Render |
| 689 | // purpose : |
| 690 | // ======================================================================= |
| 691 | void OpenGl_PrimitiveArray::Render (const Handle(OpenGl_Workspace)& theWorkspace) const |
| 692 | { |
| 693 | if (myPArray == NULL || myDrawMode == DRAW_MODE_NONE || myPArray->num_vertexs <= 0) |
| 694 | { |
| 695 | return; |
| 696 | } |
| 697 | |
| 698 | const OpenGl_AspectFace* anAspectFace = theWorkspace->AspectFace (Standard_True); |
| 699 | const OpenGl_AspectLine* anAspectLine = theWorkspace->AspectLine (Standard_True); |
| 700 | const OpenGl_AspectMarker* anAspectMarker = theWorkspace->AspectMarker (myDrawMode == GL_POINTS); |
| 701 | |
| 702 | // create VBOs on first render call |
| 703 | const Handle(OpenGl_Context)& aCtx = theWorkspace->GetGlContext(); |
| 704 | if (!myIsVboInit |
| 705 | && !aCtx->caps->vboDisable |
| 706 | && aCtx->core15 != NULL |
| 707 | && (myDrawMode != GL_POINTS || anAspectMarker->Sprite().IsNull() || !anAspectMarker->Sprite()->IsDisplayList())) |
| 708 | { |
| 709 | if (!BuildVBO (theWorkspace)) |
| 710 | { |
| 711 | TCollection_ExtendedString aMsg; |
| 712 | aMsg += "VBO creation for Primitive Array has failed for "; |
| 713 | aMsg += myPArray->num_vertexs; |
| 714 | aMsg += " vertices. Out of memory?"; |
| 715 | aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, GL_DEBUG_TYPE_PERFORMANCE_ARB, 0, GL_DEBUG_SEVERITY_LOW_ARB, aMsg); |
| 716 | } |
| 717 | myIsVboInit = Standard_True; |
| 718 | } |
| 719 | |
| 720 | switch (myPArray->type) |
| 721 | { |
| 722 | case TelPointsArrayType: |
| 723 | case TelPolylinesArrayType: |
| 724 | case TelSegmentsArrayType: |
| 725 | { |
| 726 | glDisable (GL_LIGHTING); |
| 727 | break; |
| 728 | } |
| 729 | default: |
| 730 | break; |
| 731 | } |
| 732 | |
| 733 | Tint aFrontLightingModel = anAspectFace->IntFront.color_mask; |
| 734 | const TEL_COLOUR* anInteriorColor = &anAspectFace->IntFront.matcol; |
| 735 | const TEL_COLOUR* anEdgeColor = &anAspectFace->AspectEdge()->Color(); |
| 736 | const TEL_COLOUR* aLineColor = (myPArray->type == TelPointsArrayType) ? &anAspectMarker->Color() : &anAspectLine->Color(); |
| 737 | |
| 738 | // Use highlight colors |
| 739 | if (theWorkspace->NamedStatus & OPENGL_NS_HIGHLIGHT) |
| 740 | { |
| 741 | anEdgeColor = anInteriorColor = aLineColor = theWorkspace->HighlightColor; |
| 742 | aFrontLightingModel = 0; |
| 743 | } |
| 744 | |
| 745 | DrawArray (aFrontLightingModel, |
| 746 | anAspectFace->InteriorStyle, |
| 747 | anAspectFace->Edge, |
| 748 | anInteriorColor, |
| 749 | aLineColor, |
| 750 | anEdgeColor, |
| 751 | &anAspectFace->IntFront, |
| 752 | theWorkspace); |
| 753 | } |