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b311480e | 1 | // Created on: 2011-09-20 |
2 | // Created by: Sergey ZERCHANINOV | |
1981cb22 | 3 | // Copyright (c) 2011-2013 OPEN CASCADE SAS |
b311480e | 4 | // |
973c2be1 | 5 | // This file is part of Open CASCADE Technology software library. |
b311480e | 6 | // |
d5f74e42 | 7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published | |
973c2be1 | 9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT | |
11 | // distribution for complete text of the license and disclaimer of any warranty. | |
b311480e | 12 | // |
973c2be1 | 13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. | |
b311480e | 15 | |
2166f0fa SK |
16 | #ifndef _OpenGl_Workspace_Header |
17 | #define _OpenGl_Workspace_Header | |
18 | ||
fc73a202 | 19 | #include <map> |
20 | #include <set> | |
e276548b | 21 | |
2166f0fa SK |
22 | #include <Handle_OpenGl_Workspace.hxx> |
23 | #include <OpenGl_Window.hxx> | |
24 | ||
25 | #include <TColStd_Array2OfReal.hxx> | |
26 | #include <Quantity_Color.hxx> | |
bf75be98 | 27 | #include <Graphic3d_CView.hxx> |
2166f0fa | 28 | #include <Graphic3d_TypeOfComposition.hxx> |
bf75be98 | 29 | #include <Graphic3d_TypeOfTexture.hxx> |
30 | #include <Graphic3d_PtrFrameBuffer.hxx> | |
31 | #include <Graphic3d_BufferType.hxx> | |
32 | #include <Handle_Graphic3d_TextureParams.hxx> | |
2166f0fa | 33 | |
2166f0fa SK |
34 | #include <Aspect_CLayer2d.hxx> |
35 | #include <Aspect_Handle.hxx> | |
36 | #include <Aspect_PrintAlgo.hxx> | |
550f3b8b | 37 | #include <Aspect_PolygonOffsetMode.hxx> |
2166f0fa SK |
38 | |
39 | #include <InterfaceGraphic_Graphic3d.hxx> | |
40 | #include <InterfaceGraphic_Visual3d.hxx> | |
41 | ||
1981cb22 | 42 | #include <NCollection_Sequence.hxx> |
43 | ||
bf75be98 | 44 | #include <OpenGl_AspectFace.hxx> |
fc73a202 | 45 | #include <OpenGl_FrameBuffer.hxx> |
2166f0fa SK |
46 | #include <OpenGl_Matrix.hxx> |
47 | #include <OpenGl_NamedStatus.hxx> | |
a174a3c5 | 48 | #include <OpenGl_PrinterContext.hxx> |
fc73a202 | 49 | #include <OpenGl_SceneGeometry.hxx> |
2166f0fa | 50 | #include <OpenGl_TextParam.hxx> |
4269bd1b | 51 | #include <OpenGl_RenderFilter.hxx> |
0adbd30f | 52 | #include <OpenGl_Vec.hxx> |
73192b37 | 53 | #include <OpenGl_LineAttributes.hxx> |
2166f0fa SK |
54 | |
55 | #include <Handle_OpenGl_View.hxx> | |
bf75be98 | 56 | #include <Handle_OpenGl_Texture.hxx> |
2166f0fa | 57 | |
fc73a202 | 58 | #include <OpenGl_ShaderObject.hxx> |
59 | #include <OpenGl_ShaderProgram.hxx> | |
60 | #include <OpenGl_TextureBufferArb.hxx> | |
61 | ||
2166f0fa | 62 | class OpenGl_AspectLine; |
2166f0fa SK |
63 | class OpenGl_AspectMarker; |
64 | class OpenGl_AspectText; | |
65 | class OpenGl_FrameBuffer; | |
66 | class OpenGl_Structure; | |
b7cd4ba7 | 67 | class OpenGl_TriangleSet; |
4269bd1b | 68 | class OpenGl_Element; |
692613e5 | 69 | class Image_PixMap; |
2166f0fa | 70 | |
0adbd30f | 71 | //! OpenGL material definition |
72 | struct OpenGl_Material | |
73 | { | |
74 | ||
75 | OpenGl_Vec4 Ambient; //!< ambient reflection coefficient | |
76 | OpenGl_Vec4 Diffuse; //!< diffuse reflection coefficient | |
77 | OpenGl_Vec4 Specular; //!< glossy reflection coefficient | |
78 | OpenGl_Vec4 Emission; //!< material emission | |
79 | OpenGl_Vec4 Params; //!< extra packed parameters | |
80 | ||
81 | Standard_ShortReal Shine() const { return Params.x(); } | |
82 | Standard_ShortReal& ChangeShine() { return Params.x(); } | |
83 | ||
84 | Standard_ShortReal Transparency() const { return Params.y(); } | |
85 | Standard_ShortReal& ChangeTransparency() { return Params.y(); } | |
86 | ||
87 | //! Initialize material | |
88 | void Init (const OPENGL_SURF_PROP& theProps); | |
89 | ||
90 | //! Returns packed (serialized) representation of material properties | |
91 | const OpenGl_Vec4* Packed() const { return reinterpret_cast<const OpenGl_Vec4*> (this); } | |
92 | static Standard_Integer NbOfVec4() { return 5; } | |
93 | ||
94 | }; | |
95 | ||
a89742cf | 96 | DEFINE_STANDARD_HANDLE (OpenGl_RaytraceFilter, OpenGl_RenderFilter) |
97 | ||
25ef750e | 98 | //! Graphical ray-tracing filter. |
a89742cf | 99 | //! Filters out all raytracable structures. |
100 | class OpenGl_RaytraceFilter : public OpenGl_RenderFilter | |
101 | { | |
102 | public: | |
103 | ||
104 | //! Default constructor. | |
105 | OpenGl_RaytraceFilter() {} | |
106 | ||
107 | //! Remembers the previously set filter. | |
108 | inline void SetPrevRenderFilter (const Handle(OpenGl_RenderFilter)& theFilter) | |
109 | { | |
110 | myPrevRenderFilter = theFilter; | |
111 | } | |
112 | ||
113 | //! Checks whether the element can be rendered or not. | |
114 | //! @param theElement [in] the element to check. | |
115 | //! @return True if element can be rendered. | |
116 | virtual Standard_Boolean CanRender (const OpenGl_Element* theElement); | |
117 | ||
118 | private: | |
119 | ||
120 | Handle(OpenGl_RenderFilter) myPrevRenderFilter; | |
121 | ||
122 | public: | |
123 | ||
124 | DEFINE_STANDARD_RTTI(OpenGl_RaytraceFilter) | |
125 | }; | |
126 | ||
e276548b | 127 | //! Represents window with GL context. |
128 | //! Provides methods to render primitives and maintain GL state. | |
2166f0fa SK |
129 | class OpenGl_Workspace : public OpenGl_Window |
130 | { | |
131 | public: | |
132 | ||
133 | //! Main constructor - prepare GL context for specified window. | |
25b97fac | 134 | OpenGl_Workspace (const Handle(OpenGl_GraphicDriver)& theDriver, |
2166f0fa | 135 | const CALL_DEF_WINDOW& theCWindow, |
5e27df78 | 136 | Aspect_RenderingContext theGContext, |
58655684 | 137 | const Handle(OpenGl_Caps)& theCaps, |
5e27df78 | 138 | const Handle(OpenGl_Context)& theShareCtx); |
2166f0fa SK |
139 | |
140 | //! Destructor | |
141 | virtual ~OpenGl_Workspace(); | |
142 | ||
143 | void SetActiveView (const Handle(OpenGl_View)& theView) { myView = theView; } | |
144 | const Handle(OpenGl_View)& ActiveView () const { return myView; } | |
145 | ||
146 | //! Redraw the window. | |
147 | void Redraw (const Graphic3d_CView& theCView, | |
148 | const Aspect_CLayer2d& theCUnderLayer, | |
149 | const Aspect_CLayer2d& theCOverLayer); | |
150 | ||
679ecdee | 151 | Standard_Boolean SetImmediateModeDrawToFront (const Standard_Boolean theDrawToFrontBuffer); |
152 | void RedrawImmediate (const Graphic3d_CView& theCView, | |
153 | const Aspect_CLayer2d& theCUnderLayer, | |
154 | const Aspect_CLayer2d& theCOverLayer, | |
155 | const Standard_Boolean theToForce = Standard_False); | |
156 | ||
157 | void Invalidate (const Graphic3d_CView& /*theCView*/) | |
2166f0fa | 158 | { |
679ecdee | 159 | myBackBufferRestored = Standard_False; |
2166f0fa SK |
160 | } |
161 | ||
162 | //! Special method to perform printing. | |
163 | //! System-specific and currently only Win platform implemented. | |
a174a3c5 | 164 | Standard_Boolean Print (const Handle(OpenGl_PrinterContext)& thePrintContext, |
165 | const Graphic3d_CView& theCView, | |
bf75be98 | 166 | const Aspect_CLayer2d& theCUnderLayer, |
2166f0fa SK |
167 | const Aspect_CLayer2d& theCOverLayer, |
168 | const Aspect_Handle theHPrintDC, | |
169 | const Standard_Boolean theToShowBackground, | |
170 | const Standard_CString theFileName, | |
171 | const Aspect_PrintAlgo thePrintAlgorithm, | |
172 | const Standard_Real theScaleFactor); | |
173 | ||
a174a3c5 | 174 | const Handle(OpenGl_PrinterContext)& PrinterContext() const |
175 | { | |
176 | return myPrintContext; | |
177 | } | |
178 | ||
2166f0fa SK |
179 | void DisplayCallback (const Graphic3d_CView& theCView, int theReason); |
180 | ||
2166f0fa SK |
181 | Graphic3d_PtrFrameBuffer FBOCreate (const Standard_Integer theWidth, const Standard_Integer theHeight); |
182 | void FBORelease (Graphic3d_PtrFrameBuffer theFBOPtr); | |
692613e5 | 183 | Standard_Boolean BufferDump (OpenGl_FrameBuffer* theFBOPtr, |
184 | Image_PixMap& theImage, | |
185 | const Graphic3d_BufferType& theBufferType); | |
2166f0fa | 186 | |
2166f0fa SK |
187 | Standard_Boolean& UseZBuffer() { return myUseZBuffer; } |
188 | Standard_Boolean& UseDepthTest() { return myUseDepthTest; } | |
189 | Standard_Boolean& UseGLLight() { return myUseGLLight; } | |
190 | ||
73192b37 | 191 | Standard_Integer AntiAliasingMode() const { return myAntiAliasingMode; } |
192 | ||
2166f0fa SK |
193 | //// RELATED TO STATUS //// |
194 | ||
195 | Standard_Integer NamedStatus; | |
196 | ||
2166f0fa SK |
197 | const TEL_COLOUR* HighlightColor; |
198 | ||
2166f0fa SK |
199 | const OpenGl_AspectLine* SetAspectLine (const OpenGl_AspectLine* theAspect); |
200 | const OpenGl_AspectFace* SetAspectFace (const OpenGl_AspectFace* theAspect); | |
201 | const OpenGl_AspectMarker* SetAspectMarker (const OpenGl_AspectMarker* theAspect); | |
202 | const OpenGl_AspectText* SetAspectText (const OpenGl_AspectText* theAspect); | |
203 | ||
204 | void SetTextParam (const OpenGl_TextParam* theParam) { TextParam_set = theParam; } | |
205 | ||
3946774d | 206 | //// THESE METHODS ARE EXPORTED AS THEY PROVIDE STATE INFO TO USERDRAW |
207 | Standard_EXPORT const OpenGl_AspectLine* AspectLine (const Standard_Boolean theWithApply); | |
208 | Standard_EXPORT const OpenGl_AspectFace* AspectFace (const Standard_Boolean theWithApply); | |
209 | Standard_EXPORT const OpenGl_AspectMarker* AspectMarker (const Standard_Boolean theWithApply); | |
210 | Standard_EXPORT const OpenGl_AspectText* AspectText (const Standard_Boolean theWithApply); | |
a174a3c5 | 211 | inline const OpenGl_TextParam* AspectTextParams() const |
212 | { | |
213 | return TextParam_applied; | |
214 | } | |
2166f0fa | 215 | |
34a44cbd | 216 | //! Clear the applied aspect state. |
217 | void ResetAppliedAspect(); | |
218 | ||
bf75be98 | 219 | Standard_EXPORT Handle(OpenGl_Texture) DisableTexture(); |
220 | Standard_EXPORT Handle(OpenGl_Texture) EnableTexture (const Handle(OpenGl_Texture)& theTexture, | |
221 | const Handle(Graphic3d_TextureParams)& theParams = NULL); | |
8625ef7e | 222 | const Handle(OpenGl_Texture)& ActiveTexture() const { return myTextureBound; } |
bf75be98 | 223 | |
4269bd1b | 224 | //! Set filter for restricting rendering of particular elements. |
225 | //! Filter can be applied for rendering passes used by recursive | |
226 | //! rendering algorithms for rendering elements of groups. | |
227 | //! @param theFilter [in] the filter instance. | |
228 | inline void SetRenderFilter (const Handle(OpenGl_RenderFilter)& theFilter) | |
229 | { | |
5322131b | 230 | myRenderFilter = theFilter; |
4269bd1b | 231 | } |
232 | ||
233 | //! Get rendering filter. | |
234 | //! @return filter instance. | |
5322131b | 235 | inline const Handle(OpenGl_RenderFilter)& GetRenderFilter() const |
236 | { | |
237 | return myRenderFilter; | |
4269bd1b | 238 | } |
239 | ||
240 | //! @return applied view matrix. | |
241 | inline const OpenGl_Matrix* ViewMatrix() const { return ViewMatrix_applied; } | |
242 | ||
243 | //! @return applied model structure matrix. | |
244 | inline const OpenGl_Matrix* ModelMatrix() const { return StructureMatrix_applied; } | |
245 | ||
550f3b8b | 246 | //! Sets and applies current polygon offset. |
247 | void SetPolygonOffset (int theMode, Standard_ShortReal theFactor, Standard_ShortReal theUnits); | |
248 | ||
249 | //! Returns currently applied polygon offset params. | |
250 | const TEL_POFFSET_PARAM& AppliedPolygonOffset() { return PolygonOffset_applied; } | |
251 | ||
b7cd4ba7 | 252 | //! @return true if clipping algorithm enabled |
253 | inline Standard_Boolean IsCullingEnabled() const { return myIsCullingEnabled; } | |
254 | ||
a89742cf | 255 | //! Returns a flag whether to redraw the scene using OpenGL rasterization |
256 | Standard_Boolean ToRedrawGL() const { return myToRedrawGL; } | |
257 | ||
2166f0fa SK |
258 | protected: |
259 | ||
679ecdee | 260 | //! Copy content of Back buffer to the Front buffer |
261 | void copyBackToFront(); | |
2166f0fa SK |
262 | |
263 | virtual Standard_Boolean Activate(); | |
264 | ||
679ecdee | 265 | void redraw1 (const Graphic3d_CView& theCView, |
bf75be98 | 266 | const Aspect_CLayer2d& theCUnderLayer, |
2166f0fa | 267 | const Aspect_CLayer2d& theCOverLayer, |
679ecdee | 268 | const int theToSwap); |
2166f0fa | 269 | |
0adbd30f | 270 | void updateMaterial (const int theFlag); |
2166f0fa | 271 | |
bf75be98 | 272 | void setTextureParams (Handle(OpenGl_Texture)& theTexture, |
273 | const Handle(Graphic3d_TextureParams)& theParams); | |
2166f0fa | 274 | |
fc73a202 | 275 | protected: |
e276548b | 276 | |
fc73a202 | 277 | //! Result of OpenGL shaders initialization. |
278 | enum RaytraceInitStatus | |
279 | { | |
280 | OpenGl_RT_NONE, | |
281 | OpenGl_RT_INIT, | |
282 | OpenGl_RT_FAIL | |
283 | }; | |
e276548b | 284 | |
84c71f29 | 285 | //! Describes update mode (state). |
286 | enum GeomUpdateMode | |
287 | { | |
288 | OpenGl_GUM_CHECK, //!< check if geometry update is necessary | |
289 | OpenGl_GUM_PREPARE, //!< collect unchanged objects | |
290 | OpenGl_GUM_UPDATE //!< update raytracing data, rebuild changed objects | |
291 | }; | |
292 | ||
fc73a202 | 293 | //! Defines frequently used shader variables. |
294 | enum ShaderVariableIndex | |
295 | { | |
296 | OpenGl_RT_aPosition, | |
297 | ||
298 | OpenGl_RT_uOriginLT, | |
299 | OpenGl_RT_uOriginLB, | |
300 | OpenGl_RT_uOriginRT, | |
301 | OpenGl_RT_uOriginRB, | |
fc73a202 | 302 | OpenGl_RT_uDirectLT, |
303 | OpenGl_RT_uDirectLB, | |
304 | OpenGl_RT_uDirectRT, | |
305 | OpenGl_RT_uDirectRB, | |
25ef750e | 306 | OpenGl_RT_uUnviewMat, |
307 | ||
fc73a202 | 308 | OpenGl_RT_uSceneRad, |
309 | OpenGl_RT_uSceneEps, | |
fc73a202 | 310 | OpenGl_RT_uLightAmbnt, |
311 | OpenGl_RT_uLightCount, | |
312 | ||
313 | OpenGl_RT_uShadEnabled, | |
314 | OpenGl_RT_uReflEnabled, | |
25ef750e | 315 | OpenGl_RT_uEnvMapEnable, |
fc73a202 | 316 | |
317 | OpenGl_RT_uOffsetX, | |
318 | OpenGl_RT_uOffsetY, | |
319 | OpenGl_RT_uSamples, | |
312a4043 | 320 | OpenGl_RT_uWinSizeX, |
321 | OpenGl_RT_uWinSizeY, | |
fc73a202 | 322 | |
25ef750e | 323 | OpenGl_RT_uTextures, |
84c71f29 | 324 | |
fc73a202 | 325 | OpenGl_RT_NbVariables // special field |
326 | }; | |
e276548b | 327 | |
fc73a202 | 328 | //! Defines texture samplers. |
329 | enum ShaderSamplerNames | |
330 | { | |
e2da917a | 331 | OpenGl_RT_SceneNodeInfoTexture = 0, |
332 | OpenGl_RT_SceneMinPointTexture = 1, | |
333 | OpenGl_RT_SceneMaxPointTexture = 2, | |
334 | OpenGl_RT_SceneTransformTexture = 3, | |
fc73a202 | 335 | |
e2da917a | 336 | OpenGl_RT_GeometryVertexTexture = 4, |
337 | OpenGl_RT_GeometryNormalTexture = 5, | |
338 | OpenGl_RT_GeometryTexCrdTexture = 6, | |
339 | OpenGl_RT_GeometryTriangTexture = 7, | |
fc73a202 | 340 | |
e2da917a | 341 | OpenGl_RT_EnvironmentMapTexture = 8, |
e276548b | 342 | |
e2da917a | 343 | OpenGl_RT_RaytraceMaterialTexture = 9, |
344 | OpenGl_RT_RaytraceLightSrcTexture = 10, | |
fc73a202 | 345 | |
e2da917a | 346 | OpenGl_RT_FSAAInputTexture = 11, |
fc73a202 | 347 | |
e2da917a | 348 | OpenGl_RT_OpenGlColorTexture = 12, |
349 | OpenGl_RT_OpenGlDepthTexture = 13 | |
fc73a202 | 350 | }; |
351 | ||
352 | //! Tool class for management of shader sources. | |
353 | class ShaderSource | |
e276548b | 354 | { |
fc73a202 | 355 | public: |
356 | ||
357 | //! Creates new uninitialized shader source. | |
358 | ShaderSource() | |
359 | { | |
360 | // | |
361 | } | |
362 | ||
363 | //! Creates new shader source from specified file. | |
364 | ShaderSource (const TCollection_AsciiString& theFileName) | |
365 | { | |
366 | Load (&theFileName, 1); | |
367 | } | |
368 | ||
369 | public: | |
370 | ||
371 | //! Returns prefix to insert before the source. | |
372 | const TCollection_AsciiString& Prefix() const | |
373 | { | |
374 | return myPrefix; | |
375 | } | |
376 | ||
377 | //! Sets prefix to insert before the source. | |
378 | void SetPrefix (const TCollection_AsciiString& thePrefix) | |
379 | { | |
380 | myPrefix = thePrefix; | |
381 | } | |
382 | ||
383 | //! Returns shader source combined with prefix. | |
384 | TCollection_AsciiString Source() const; | |
385 | ||
386 | //! Loads shader source from specified files. | |
387 | void Load (const TCollection_AsciiString* theFileNames, const Standard_Integer theCount); | |
388 | ||
389 | private: | |
390 | ||
391 | TCollection_AsciiString mySource; //!< Source string of the shader object | |
392 | TCollection_AsciiString myPrefix; //!< Prefix to insert before the source | |
393 | ||
e276548b | 394 | }; |
395 | ||
bc8c79bb | 396 | //! Default ray-tracing depth. |
25ef750e | 397 | static const Standard_Integer THE_DEFAULT_NB_BOUNCES = 3; |
bc8c79bb | 398 | |
fc73a202 | 399 | //! Default size of traversal stack. |
400 | static const Standard_Integer THE_DEFAULT_STACK_SIZE = 24; | |
401 | ||
bc8c79bb | 402 | //! Compile-time ray-tracing parameters. |
403 | struct RaytracingParams | |
404 | { | |
405 | //! Actual size of traversal stack in shader program. | |
406 | Standard_Integer StackSize; | |
407 | ||
408 | //! Actual ray-tracing depth (number of ray bounces). | |
25ef750e | 409 | Standard_Integer NbBounces; |
bc8c79bb | 410 | |
411 | //! Sets light propagation through transparent media. | |
412 | Standard_Boolean TransparentShadows; | |
413 | ||
414 | //! Creates default compile-time ray-tracing parameters. | |
415 | RaytracingParams() | |
416 | : StackSize (THE_DEFAULT_STACK_SIZE), | |
25ef750e | 417 | NbBounces (THE_DEFAULT_NB_BOUNCES), |
bc8c79bb | 418 | TransparentShadows (Standard_False) |
419 | { | |
420 | // | |
421 | } | |
422 | }; | |
423 | ||
e276548b | 424 | protected: //! @name methods related to ray-tracing |
425 | ||
426 | //! Updates 3D scene geometry for ray-tracing. | |
84c71f29 | 427 | Standard_Boolean UpdateRaytraceGeometry (GeomUpdateMode theMode); |
e276548b | 428 | |
429 | //! Checks to see if the structure is modified. | |
430 | Standard_Boolean CheckRaytraceStructure (const OpenGl_Structure* theStructure); | |
431 | ||
25ef750e | 432 | //! Creates ray-tracing material properties. |
433 | Standard_Boolean CreateMaterial (const OpenGl_AspectFace* theAspect, OpenGl_RaytraceMaterial& theMaterial); | |
434 | ||
e276548b | 435 | //! Updates 3D scene light sources for ray-tracing. |
25ef750e | 436 | Standard_Boolean UpdateRaytraceLightSources (const OpenGl_Mat4& theInvModelView); |
e276548b | 437 | |
438 | //! Updates environment map for ray-tracing. | |
439 | Standard_Boolean UpdateRaytraceEnvironmentMap(); | |
5322131b | 440 | |
e276548b | 441 | //! Adds OpenGL structure to ray-traced scene geometry. |
0717ddc1 | 442 | Standard_Boolean AddRaytraceStructure (const OpenGl_Structure* theStructure, std::set<const OpenGl_Structure*>& theElements); |
443 | ||
444 | //! Adds OpenGL groups to ray-traced scene geometry. | |
445 | Standard_Boolean AddRaytraceGroups (const OpenGl_Structure* theStructure, | |
446 | const Standard_Integer theStructMatId, | |
447 | const Standard_ShortReal* theTransform); | |
e276548b | 448 | |
449 | //! Adds OpenGL primitive array to ray-traced scene geometry. | |
265d4508 | 450 | OpenGl_TriangleSet* AddRaytracePrimitiveArray ( |
25ef750e | 451 | const OpenGl_PrimitiveArray* theArray, int theMatID, const OpenGl_Mat4* theTrans); |
e276548b | 452 | |
453 | //! Adds vertex indices from OpenGL primitive array to ray-traced scene geometry. | |
871fa103 | 454 | Standard_Boolean AddRaytraceVertexIndices (OpenGl_TriangleSet& theSet, |
455 | const OpenGl_PrimitiveArray& theArray, | |
456 | Standard_Integer theOffset, | |
457 | Standard_Integer theCount, | |
458 | Standard_Integer theMatID); | |
e276548b | 459 | |
460 | //! Adds OpenGL triangle array to ray-traced scene geometry. | |
871fa103 | 461 | Standard_Boolean AddRaytraceTriangleArray (OpenGl_TriangleSet& theSet, |
462 | const Handle(Graphic3d_IndexBuffer)& theIndices, | |
463 | Standard_Integer theOffset, | |
464 | Standard_Integer theCount, | |
465 | Standard_Integer theMatID); | |
e276548b | 466 | |
467 | //! Adds OpenGL triangle fan array to ray-traced scene geometry. | |
871fa103 | 468 | Standard_Boolean AddRaytraceTriangleFanArray (OpenGl_TriangleSet& theSet, |
469 | const Handle(Graphic3d_IndexBuffer)& theIndices, | |
470 | Standard_Integer theOffset, | |
471 | Standard_Integer theCount, | |
472 | Standard_Integer theMatID); | |
e276548b | 473 | |
265d4508 | 474 | //! Adds OpenGL triangle strip array to ray-traced scene geometry. |
871fa103 | 475 | Standard_Boolean AddRaytraceTriangleStripArray (OpenGl_TriangleSet& theSet, |
476 | const Handle(Graphic3d_IndexBuffer)& theIndices, | |
477 | Standard_Integer theOffset, | |
478 | Standard_Integer theCount, | |
479 | Standard_Integer theMatID); | |
e276548b | 480 | |
481 | //! Adds OpenGL quadrangle array to ray-traced scene geometry. | |
871fa103 | 482 | Standard_Boolean AddRaytraceQuadrangleArray (OpenGl_TriangleSet& theSet, |
483 | const Handle(Graphic3d_IndexBuffer)& theIndices, | |
484 | Standard_Integer theOffset, | |
485 | Standard_Integer theCount, | |
486 | Standard_Integer theMatID); | |
e276548b | 487 | |
488 | //! Adds OpenGL quadrangle strip array to ray-traced scene geometry. | |
871fa103 | 489 | Standard_Boolean AddRaytraceQuadrangleStripArray (OpenGl_TriangleSet& theSet, |
490 | const Handle(Graphic3d_IndexBuffer)& theIndices, | |
491 | Standard_Integer theOffset, | |
492 | Standard_Integer theCount, | |
493 | Standard_Integer theMatID); | |
e276548b | 494 | |
495 | //! Adds OpenGL polygon array to ray-traced scene geometry. | |
871fa103 | 496 | Standard_Boolean AddRaytracePolygonArray (OpenGl_TriangleSet& theSet, |
497 | const Handle(Graphic3d_IndexBuffer)& theIndices, | |
498 | Standard_Integer theOffset, | |
499 | Standard_Integer theCount, | |
500 | Standard_Integer theMatID); | |
e276548b | 501 | |
fc73a202 | 502 | //! Loads and compiles shader object from specified source. |
503 | Handle(OpenGl_ShaderObject) LoadShader (const ShaderSource& theSource, GLenum theType); | |
504 | ||
505 | //! Performs safe exit when shaders initialization fails. | |
506 | Standard_Boolean SafeFailBack (const TCollection_ExtendedString& theMessage); | |
507 | ||
25ef750e | 508 | //! Generates shader prefix based on current ray-tracing options. |
509 | TCollection_AsciiString GenerateShaderPrefix(); | |
510 | ||
fc73a202 | 511 | //! Initializes OpenGL/GLSL shader programs. |
bc8c79bb | 512 | Standard_Boolean InitRaytraceResources (const Graphic3d_CView& theCView); |
5322131b | 513 | |
fc73a202 | 514 | //! Releases OpenGL/GLSL shader programs. |
515 | void ReleaseRaytraceResources(); | |
e276548b | 516 | |
fc73a202 | 517 | //! Uploads ray-trace data to the GPU. |
518 | Standard_Boolean UploadRaytraceData(); | |
e276548b | 519 | |
fc73a202 | 520 | //! Resizes OpenGL frame buffers. |
521 | Standard_Boolean ResizeRaytraceBuffers (const Standard_Integer theSizeX, | |
522 | const Standard_Integer theSizeY); | |
e276548b | 523 | |
fc73a202 | 524 | //! Generates viewing rays for corners of screen quad. |
25ef750e | 525 | void UpdateCamera (const OpenGl_Mat4& theOrientation, |
526 | const OpenGl_Mat4& theViewMapping, | |
527 | OpenGl_Vec3 theOrigins[4], | |
528 | OpenGl_Vec3 theDirects[4], | |
529 | OpenGl_Mat4& theInvModelProj); | |
530 | ||
531 | //! Sets uniform state for the given ray-tracing shader program. | |
532 | Standard_Boolean SetUniformState (const Graphic3d_CView& theCView, | |
312a4043 | 533 | const Standard_Integer theSizeX, |
534 | const Standard_Integer theSizeY, | |
25ef750e | 535 | const OpenGl_Vec3* theOrigins, |
536 | const OpenGl_Vec3* theDirects, | |
537 | const OpenGl_Mat4& theUnviewMat, | |
538 | const Standard_Integer theProgramIndex, | |
539 | Handle(OpenGl_ShaderProgram)& theRaytraceProgram); | |
e276548b | 540 | |
fc73a202 | 541 | //! Runs ray-tracing shader programs. |
542 | Standard_Boolean RunRaytraceShaders (const Graphic3d_CView& theCView, | |
543 | const Standard_Integer theSizeX, | |
544 | const Standard_Integer theSizeY, | |
545 | const OpenGl_Vec3 theOrigins[4], | |
546 | const OpenGl_Vec3 theDirects[4], | |
25ef750e | 547 | const OpenGl_Mat4& theUnviewMat, |
fc73a202 | 548 | OpenGl_FrameBuffer* theFrameBuffer); |
265d4508 | 549 | |
fc73a202 | 550 | //! Redraws the window using OpenGL/GLSL ray-tracing. |
e276548b | 551 | Standard_Boolean Raytrace (const Graphic3d_CView& theCView, |
fc73a202 | 552 | const Standard_Integer theSizeX, |
553 | const Standard_Integer theSizeY, | |
554 | const Standard_Boolean theToSwap, | |
a89742cf | 555 | const Aspect_CLayer2d& theCOverLayer, |
556 | const Aspect_CLayer2d& theCUnderLayer, | |
fc73a202 | 557 | OpenGl_FrameBuffer* theFrameBuffer); |
e276548b | 558 | |
559 | protected: //! @name fields related to ray-tracing | |
560 | ||
fc73a202 | 561 | //! Result of shaders initialization. |
562 | RaytraceInitStatus myComputeInitStatus; | |
e276548b | 563 | |
564 | //! Is geometry data valid? | |
565 | Standard_Boolean myIsRaytraceDataValid; | |
5322131b | 566 | |
25ef750e | 567 | //! Warning about missing extension GL_ARB_bindless_texture has been displayed? |
568 | Standard_Boolean myIsRaytraceWarnTextures; | |
569 | ||
e276548b | 570 | //! 3D scene geometry data for ray-tracing. |
265d4508 | 571 | OpenGl_RaytraceGeometry myRaytraceGeometry; |
e276548b | 572 | |
573 | //! Radius of bounding sphere of the scene. | |
265d4508 | 574 | Standard_ShortReal myRaytraceSceneRadius; |
e276548b | 575 | //! Scene epsilon to prevent self-intersections. |
265d4508 | 576 | Standard_ShortReal myRaytraceSceneEpsilon; |
e276548b | 577 | |
bc8c79bb | 578 | //! Compile-time ray-tracing parameters. |
579 | RaytracingParams myRaytraceParameters; | |
fc73a202 | 580 | |
581 | //! OpenGL/GLSL source of ray-tracing fragment shader. | |
582 | ShaderSource myRaytraceShaderSource; | |
583 | //! OpenGL/GLSL source of adaptive-AA fragment shader. | |
584 | ShaderSource myPostFSAAShaderSource; | |
585 | ||
586 | //! OpenGL/GLSL ray-tracing fragment shader. | |
587 | Handle(OpenGl_ShaderObject) myRaytraceShader; | |
588 | //! OpenGL/GLSL adaptive-AA fragment shader. | |
589 | Handle(OpenGl_ShaderObject) myPostFSAAShader; | |
590 | ||
591 | //! OpenGL/GLSL ray-tracing shader program. | |
592 | Handle(OpenGl_ShaderProgram) myRaytraceProgram; | |
593 | //! OpenGL/GLSL adaptive-AA shader program. | |
594 | Handle(OpenGl_ShaderProgram) myPostFSAAProgram; | |
595 | ||
e2da917a | 596 | //! Texture buffer of data records of bottom-level BVH nodes. |
fc73a202 | 597 | Handle(OpenGl_TextureBufferArb) mySceneNodeInfoTexture; |
e2da917a | 598 | //! Texture buffer of minimum points of bottom-level BVH nodes. |
fc73a202 | 599 | Handle(OpenGl_TextureBufferArb) mySceneMinPointTexture; |
e2da917a | 600 | //! Texture buffer of maximum points of bottom-level BVH nodes. |
fc73a202 | 601 | Handle(OpenGl_TextureBufferArb) mySceneMaxPointTexture; |
84c71f29 | 602 | //! Texture buffer of transformations of high-level BVH nodes. |
603 | Handle(OpenGl_TextureBufferArb) mySceneTransformTexture; | |
fc73a202 | 604 | |
fc73a202 | 605 | //! Texture buffer of vertex coords. |
606 | Handle(OpenGl_TextureBufferArb) myGeometryVertexTexture; | |
607 | //! Texture buffer of vertex normals. | |
608 | Handle(OpenGl_TextureBufferArb) myGeometryNormalTexture; | |
25ef750e | 609 | //! Texture buffer of vertex UV coords. |
610 | Handle(OpenGl_TextureBufferArb) myGeometryTexCrdTexture; | |
fc73a202 | 611 | //! Texture buffer of triangle indices. |
612 | Handle(OpenGl_TextureBufferArb) myGeometryTriangTexture; | |
25ef750e | 613 | |
fc73a202 | 614 | //! Texture buffer of material properties. |
615 | Handle(OpenGl_TextureBufferArb) myRaytraceMaterialTexture; | |
616 | //! Texture buffer of light source properties. | |
617 | Handle(OpenGl_TextureBufferArb) myRaytraceLightSrcTexture; | |
618 | ||
619 | //! Vertex buffer (VBO) for drawing dummy quad. | |
620 | OpenGl_VertexBuffer myRaytraceScreenQuad; | |
621 | ||
622 | //! Framebuffer (FBO) to perform adaptive FSAA. | |
623 | Handle(OpenGl_FrameBuffer) myRaytraceFBO1; | |
624 | //! Framebuffer (FBO) to perform adaptive FSAA. | |
625 | Handle(OpenGl_FrameBuffer) myRaytraceFBO2; | |
a89742cf | 626 | //! Framebuffer (FBO) for pre-raytrace rendering by OpenGL. |
627 | Handle(OpenGl_FrameBuffer) myOpenGlFBO; | |
265d4508 | 628 | |
e276548b | 629 | //! State of OpenGL view. |
630 | Standard_Size myViewModificationStatus; | |
e276548b | 631 | //! State of OpenGL layer list. |
632 | Standard_Size myLayersModificationStatus; | |
633 | ||
265d4508 | 634 | //! State of OpenGL structures reflected to ray-tracing. |
e276548b | 635 | std::map<const OpenGl_Structure*, Standard_Size> myStructureStates; |
636 | ||
84c71f29 | 637 | //! PrimitiveArray to TriangleSet map for scene partial update. |
8d3f219f | 638 | std::map<Standard_Size, OpenGl_TriangleSet*> myArrayToTrianglesMap; |
84c71f29 | 639 | |
fc73a202 | 640 | //! Cached locations of frequently used uniform variables. |
641 | Standard_Integer myUniformLocations[2][OpenGl_RT_NbVariables]; | |
e276548b | 642 | |
25ef750e | 643 | //! Graphical ray-tracing filter to filter out all raytracable structures. |
a89742cf | 644 | Handle(OpenGl_RaytraceFilter) myRaytraceFilter; |
645 | ||
25ef750e | 646 | //! Redraw the scene using OpenGL rasterization or ray-tracing? |
a89742cf | 647 | Standard_Boolean myToRedrawGL; |
648 | ||
bf75be98 | 649 | protected: //! @name protected fields |
2166f0fa | 650 | |
a174a3c5 | 651 | Handle(OpenGl_PrinterContext) myPrintContext; |
73192b37 | 652 | Handle(OpenGl_View) myView; |
653 | Handle(OpenGl_LineAttributes) myLineAttribs; | |
654 | Standard_Integer myAntiAliasingMode; | |
1981cb22 | 655 | Standard_Boolean myTransientDrawToFront; //!< optimization flag for immediate mode (to render directly to the front buffer) |
679ecdee | 656 | Standard_Boolean myBackBufferRestored; |
657 | Standard_Boolean myIsImmediateDrawn; //!< flag indicates that immediate mode buffer contains some data | |
bf75be98 | 658 | Standard_Boolean myUseZBuffer; |
659 | Standard_Boolean myUseDepthTest; | |
660 | Standard_Boolean myUseGLLight; | |
b7cd4ba7 | 661 | Standard_Boolean myIsCullingEnabled; //!< frustum culling flag |
2166f0fa | 662 | |
a89742cf | 663 | unsigned int myFrameCounter; //!< redraw counter, for debugging |
664 | ||
bf75be98 | 665 | protected: //! @name fields related to status |
666 | ||
4269bd1b | 667 | Handle(OpenGl_RenderFilter) myRenderFilter; |
bf75be98 | 668 | Handle(OpenGl_Texture) myTextureBound; //!< currently bound texture (managed by OpenGl_AspectFace and OpenGl_View environment texture) |
2166f0fa SK |
669 | const OpenGl_AspectLine *AspectLine_set, *AspectLine_applied; |
670 | const OpenGl_AspectFace *AspectFace_set, *AspectFace_applied; | |
671 | const OpenGl_AspectMarker *AspectMarker_set, *AspectMarker_applied; | |
672 | const OpenGl_AspectText *AspectText_set, *AspectText_applied; | |
673 | ||
674 | const OpenGl_TextParam *TextParam_set, *TextParam_applied; | |
675 | ||
676 | const OpenGl_Matrix* ViewMatrix_applied; | |
677 | const OpenGl_Matrix* StructureMatrix_applied; | |
678 | ||
3b1817a9 | 679 | OpenGl_Material myMatFront; //!< current front material state (cached to reduce GL context updates) |
680 | OpenGl_Material myMatBack; //!< current back material state | |
681 | OpenGl_Material myMatTmp; //!< temporary variable | |
682 | TelCullMode myCullingMode; //!< back face culling mode, applied from face aspect | |
0adbd30f | 683 | |
550f3b8b | 684 | OpenGl_Matrix myModelViewMatrix; //!< Model matrix with applied structure transformations |
0f8c0fb8 | 685 | |
550f3b8b | 686 | TEL_POFFSET_PARAM PolygonOffset_applied; //!< Currently applied polygon offset. |
2166f0fa | 687 | |
550f3b8b | 688 | OpenGl_AspectFace myAspectFaceHl; //!< Hiddenline aspect |
bf75be98 | 689 | |
690 | public: //! @name type definition | |
2166f0fa | 691 | |
bf75be98 | 692 | DEFINE_STANDARD_RTTI(OpenGl_Workspace) |
1c35b92f | 693 | DEFINE_STANDARD_ALLOC |
2166f0fa SK |
694 | |
695 | }; | |
696 | ||
bf75be98 | 697 | #endif // _OpenGl_Workspace_Header |