0027750: Visualization, V3d_View - remove unused functionality ZClipping and ZCueing
[occt.git] / src / OpenGl / OpenGl_ShaderProgram.hxx
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30f0ad28 1// Created on: 2013-09-19
2// Created by: Denis BOGOLEPOV
d5f74e42 3// Copyright (c) 2013-2014 OPEN CASCADE SAS
30f0ad28 4//
973c2be1 5// This file is part of Open CASCADE Technology software library.
30f0ad28 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.
30f0ad28 12//
973c2be1 13// Alternatively, this file may be used under the terms of Open CASCADE
14// commercial license or contractual agreement.
30f0ad28 15
16#ifndef _OpenGl_ShaderProgram_Header
17#define _OpenGl_ShaderProgram_Header
18
19#include <NCollection_DataMap.hxx>
20#include <NCollection_Sequence.hxx>
21#include <TCollection_AsciiString.hxx>
22
23#include <Graphic3d_ShaderObject.hxx>
24#include <Graphic3d_ShaderProgram.hxx>
25
30f0ad28 26#include <OpenGl_Vec.hxx>
27#include <OpenGl_Matrix.hxx>
28#include <OpenGl_ShaderObject.hxx>
30f0ad28 29
c04c30b3 30class OpenGl_ShaderProgram;
31DEFINE_STANDARD_HANDLE(OpenGl_ShaderProgram, OpenGl_Resource)
32
30f0ad28 33//! The enumeration of OCCT-specific OpenGL/GLSL variables.
34enum OpenGl_StateVariable
35{
36 // OpenGL matrix state
37 OpenGl_OCC_MODEL_WORLD_MATRIX,
38 OpenGl_OCC_WORLD_VIEW_MATRIX,
39 OpenGl_OCC_PROJECTION_MATRIX,
40 OpenGl_OCC_MODEL_WORLD_MATRIX_INVERSE,
41 OpenGl_OCC_WORLD_VIEW_MATRIX_INVERSE,
42 OpenGl_OCC_PROJECTION_MATRIX_INVERSE,
43 OpenGl_OCC_MODEL_WORLD_MATRIX_TRANSPOSE,
44 OpenGl_OCC_WORLD_VIEW_MATRIX_TRANSPOSE,
45 OpenGl_OCC_PROJECTION_MATRIX_TRANSPOSE,
46 OpenGl_OCC_MODEL_WORLD_MATRIX_INVERSE_TRANSPOSE,
47 OpenGl_OCC_WORLD_VIEW_MATRIX_INVERSE_TRANSPOSE,
48 OpenGl_OCC_PROJECTION_MATRIX_INVERSE_TRANSPOSE,
49
50 // OpenGL clip planes state
12381341 51 OpenGl_OCC_CLIP_PLANE_EQUATIONS,
5495fa7e 52 OpenGl_OCC_CLIP_PLANE_COUNT,
30f0ad28 53
54 // OpenGL light state
12381341 55 OpenGl_OCC_LIGHT_SOURCE_COUNT,
56 OpenGl_OCC_LIGHT_SOURCE_TYPES,
57 OpenGl_OCC_LIGHT_SOURCE_PARAMS,
58 OpenGl_OCC_LIGHT_AMBIENT,
30f0ad28 59
60 // Material state
61 OpenGl_OCCT_ACTIVE_SAMPLER,
62 OpenGl_OCCT_TEXTURE_ENABLE,
63 OpenGl_OCCT_DISTINGUISH_MODE,
12381341 64 OpenGl_OCCT_FRONT_MATERIAL,
65 OpenGl_OCCT_BACK_MATERIAL,
8625ef7e 66 OpenGl_OCCT_COLOR,
67
79f4f036 68 OpenGl_OCCT_TEXTURE_TRSF2D,
8625ef7e 69 OpenGl_OCCT_POINT_SIZE,
30f0ad28 70
71 // DON'T MODIFY THIS ITEM (insert new items before it)
72 OpenGl_OCCT_NUMBER_OF_STATE_VARIABLES
73};
74
75class OpenGl_ShaderProgram;
76
77//! Interface for generic setter of user-defined uniform variables.
78struct OpenGl_SetterInterface
79{
80 //! Sets user-defined uniform variable to specified program.
81 virtual void Set (const Handle(OpenGl_Context)& theCtx,
82 const Handle(Graphic3d_ShaderVariable)& theVariable,
83 OpenGl_ShaderProgram* theProgram) = 0;
84
85 //! Destructor
86 virtual ~OpenGl_SetterInterface() {}
87};
88
89//! List of OpenGL shader objects.
90typedef NCollection_Sequence<Handle(OpenGl_ShaderObject)> OpenGl_ShaderList;
91
92//! List of shader variable setters.
93typedef NCollection_DataMap<size_t, OpenGl_SetterInterface*> OpenGl_SetterList;
94
95//! Support tool for setting user-defined uniform variables.
96class OpenGl_VariableSetterSelector
97{
98public:
99
100 //! Creates new setter selector.
101 OpenGl_VariableSetterSelector();
102
103 //! Releases memory resources of setter selector.
104 ~OpenGl_VariableSetterSelector();
105
106 //! Sets user-defined uniform variable to specified program.
107 void Set (const Handle(OpenGl_Context)& theCtx,
108 const Handle(Graphic3d_ShaderVariable)& theVariable,
109 OpenGl_ShaderProgram* theProgram) const;
110
111private:
112
113 //! List of variable setters.
114 OpenGl_SetterList mySetterList;
115};
116
117//! Defines types of uniform state variables.
118enum OpenGl_UniformStateType
119{
120 OpenGl_LIGHT_SOURCES_STATE,
121 OpenGl_CLIP_PLANES_STATE,
122 OpenGl_MODEL_WORLD_STATE,
123 OpenGl_WORLD_VIEW_STATE,
124 OpenGl_PROJECTION_STATE,
e135a155 125 OpenGl_MATERIALS_STATE,
126 OpenGl_SURF_DETAIL_STATE
30f0ad28 127};
128
129//! Total number of state types.
130const int MaxStateTypes = 6;
131
132//! Wrapper for OpenGL program object.
133class OpenGl_ShaderProgram : public OpenGl_Resource
134{
91c60b57 135 friend class OpenGl_View;
30f0ad28 136
137public:
138
139 //! Non-valid shader name.
140 static const GLuint NO_PROGRAM = 0;
141
142 //! Invalid location of uniform/attribute variable.
143 static const GLint INVALID_LOCATION = -1;
144
145 //! List of pre-defined OCCT state uniform variables.
146 static Standard_CString PredefinedKeywords[OpenGl_OCCT_NUMBER_OF_STATE_VARIABLES];
147
30f0ad28 148 //! Creates uninitialized shader program.
5440a790 149 //!
150 //! WARNING! This constructor is not intended to be called anywhere but from OpenGl_ShaderManager::Create().
151 //! Manager has been designed to synchronize camera position, lights definition and other aspects of the program implicitly,
152 //! as well as sharing same program across rendering groups.
153 //!
154 //! Program created outside the manager will be left detached from these routines,
155 //! and them should be performed manually by caller.
156 //!
157 //! This constructor has been made public to provide more flexibility to re-use OCCT OpenGL classes without OCCT Viewer itself.
158 //! If this is not the case - create the program using shared OpenGl_ShaderManager instance instead.
30f0ad28 159 Standard_EXPORT OpenGl_ShaderProgram (const Handle(Graphic3d_ShaderProgram)& theProxy = NULL);
160
5440a790 161protected:
162
30f0ad28 163 static OpenGl_VariableSetterSelector mySetterSelector;
164
165public:
166
167 //! Releases resources of shader program.
168 Standard_EXPORT virtual ~OpenGl_ShaderProgram();
169
170 //! Creates new empty shader program of specified type.
171 Standard_EXPORT Standard_Boolean Create (const Handle(OpenGl_Context)& theCtx);
172
173 //! Destroys shader program.
79104795 174 Standard_EXPORT virtual void Release (OpenGl_Context* theCtx) Standard_OVERRIDE;
30f0ad28 175
176 //! Attaches shader object to the program object.
177 Standard_EXPORT Standard_Boolean AttachShader (const Handle(OpenGl_Context)& theCtx,
178 const Handle(OpenGl_ShaderObject)& theShader);
179
180 //! Detaches shader object to the program object.
181 Standard_EXPORT Standard_Boolean DetachShader (const Handle(OpenGl_Context)& theCtx,
182 const Handle(OpenGl_ShaderObject)& theShader);
183
184 //! Initializes program object with the list of shader objects.
185 Standard_EXPORT Standard_Boolean Initialize (const Handle(OpenGl_Context)& theCtx,
186 const Graphic3d_ShaderObjectList& theShaders);
187
188 //! Links the program object.
189 Standard_EXPORT Standard_Boolean Link (const Handle(OpenGl_Context)& theCtx);
190
191 //! Fetches information log of the last link operation.
192 Standard_EXPORT Standard_Boolean FetchInfoLog (const Handle(OpenGl_Context)& theCtx,
193 TCollection_AsciiString& theLog);
194
195 //! Fetches uniform variables from proxy shader program.
196 Standard_EXPORT Standard_Boolean ApplyVariables (const Handle(OpenGl_Context)& theCtx);
197
12381341 198 //! @return true if current object was initialized
199 inline bool IsValid() const
200 {
201 return myProgramID != NO_PROGRAM;
202 }
203
7d3e64ef 204 //! @return program ID
205 inline GLuint ProgramId() const
206 {
207 return myProgramID;
208 }
209
30f0ad28 210private:
211
212 //! Returns index of last modification of variables of specified state type.
213 Standard_EXPORT Standard_Size ActiveState (const OpenGl_UniformStateType theType) const;
214
215 //! Updates index of last modification of variables of specified state type.
216 Standard_EXPORT void UpdateState (const OpenGl_UniformStateType theType,
217 const Standard_Size theIndex);
218
219public:
220
221 //! Returns location of the specific uniform variable.
222 Standard_EXPORT GLint GetUniformLocation (const Handle(OpenGl_Context)& theCtx,
223 const GLchar* theName) const;
224
225 //! Returns index of the generic vertex attribute by variable name.
226 Standard_EXPORT GLint GetAttributeLocation (const Handle(OpenGl_Context)& theCtx,
227 const GLchar* theName) const;
228
229 //! Returns location of the OCCT state uniform variable.
230 Standard_EXPORT GLint GetStateLocation (const GLuint theVariable) const;
231
232public:
233
234 //! Returns the value of the integer uniform variable.
235 Standard_EXPORT Standard_Boolean GetUniform (const Handle(OpenGl_Context)& theCtx,
236 const GLchar* theName,
237 OpenGl_Vec4i& theValue) const;
238
239 Standard_EXPORT Standard_Boolean GetUniform (const Handle(OpenGl_Context)& theCtx,
240 GLint theLocation,
241 OpenGl_Vec4i& theValue) const;
242
243 //! Returns the value of the float uniform variable.
244 Standard_EXPORT Standard_Boolean GetUniform (const Handle(OpenGl_Context)& theCtx,
245 const GLchar* theName,
246 OpenGl_Vec4& theValue) const;
247
248 //! Returns the value of the float uniform variable.
249 Standard_EXPORT Standard_Boolean GetUniform (const Handle(OpenGl_Context)& theCtx,
250 GLint theLocation,
251 OpenGl_Vec4& theValue) const;
252
253public:
254
255 //! Returns the integer vertex attribute.
256 Standard_EXPORT Standard_Boolean GetAttribute (const Handle(OpenGl_Context)& theCtx,
257 const GLchar* theName,
258 OpenGl_Vec4i& theValue) const;
259
260 //! Returns the integer vertex attribute.
261 Standard_EXPORT Standard_Boolean GetAttribute (const Handle(OpenGl_Context)& theCtx,
262 GLint theIndex,
263 OpenGl_Vec4i& theValue) const;
264
265 //! Returns the float vertex attribute.
266 Standard_EXPORT Standard_Boolean GetAttribute (const Handle(OpenGl_Context)& theCtx,
267 const GLchar* theName,
268 OpenGl_Vec4& theValue) const;
269
270 //! Returns the float vertex attribute.
271 Standard_EXPORT Standard_Boolean GetAttribute (const Handle(OpenGl_Context)& theCtx,
272 GLint theIndex,
273 OpenGl_Vec4& theValue) const;
274
275public:
276
fc73a202 277 //! Wrapper for glBindAttribLocation()
278 Standard_EXPORT Standard_Boolean SetAttributeName (const Handle(OpenGl_Context)& theCtx,
279 GLint theIndex,
280 const GLchar* theName);
281
282 //! Wrapper for glVertexAttrib1f()
283 Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx,
284 const GLchar* theName,
285 GLfloat theValue);
286
287 //! Wrapper for glVertexAttrib1f()
288 Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx,
289 GLint theIndex,
290 GLfloat theValue);
291
292 //! Wrapper for glVertexAttrib2fv()
293 Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx,
294 const GLchar* theName,
295 const OpenGl_Vec2& theValue);
296
297 //! Wrapper for glVertexAttrib2fv()
298 Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx,
299 GLint theIndex,
300 const OpenGl_Vec2& theValue);
301
302 //! Wrapper for glVertexAttrib3fv()
303 Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx,
304 const GLchar* theName,
305 const OpenGl_Vec3& theValue);
306
307 //! Wrapper for glVertexAttrib3fv()
308 Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx,
309 GLint theIndex,
310 const OpenGl_Vec3& theValue);
311
312 //! Wrapper for glVertexAttrib4fv()
313 Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx,
314 const GLchar* theName,
315 const OpenGl_Vec4& theValue);
316
317 //! Wrapper for glVertexAttrib4fv()
318 Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx,
319 GLint theIndex,
320 const OpenGl_Vec4& theValue);
321
322public:
323
30f0ad28 324 //! Specifies the value of the integer uniform variable.
325 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
326 const GLchar* theName,
327 GLint theValue);
328
329 //! Specifies the value of the integer uniform variable.
330 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
331 GLint theLocation,
332 GLint theValue);
333
334 //! Specifies the value of the integer uniform 2D vector.
335 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
336 const GLchar* theName,
337 const OpenGl_Vec2i& theValue);
338
339 //! Specifies the value of the integer uniform 2D vector.
340 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
341 GLint theLocation,
342 const OpenGl_Vec2i& theValue);
343
344 //! Specifies the value of the integer uniform 3D vector.
345 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
346 const GLchar* theName,
347 const OpenGl_Vec3i& theValue);
348
349 //! Specifies the value of the integer uniform 3D vector.
350 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
351 GLint theLocation,
352 const OpenGl_Vec3i& theValue);
353
354 //! Specifies the value of the integer uniform 4D vector.
355 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
356 const GLchar* theName,
357 const OpenGl_Vec4i& theValue);
358
359 //! Specifies the value of the integer uniform 4D vector.
360 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
361 GLint theLocation,
362 const OpenGl_Vec4i& theValue);
363
364public:
365
47e9c178 366 //! Specifies the value of the unsigned integer uniform 2D vector (uvec2).
25ef750e 367 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
368 const GLchar* theName,
47e9c178 369 const OpenGl_Vec2u& theValue);
25ef750e 370
47e9c178 371 //! Specifies the value of the unsigned integer uniform 2D vector (uvec2).
25ef750e 372 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
373 GLint theLocation,
47e9c178 374 const OpenGl_Vec2u& theValue);
25ef750e 375
47e9c178 376 //! Specifies the value of the uvec2 uniform array
25ef750e 377 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
378 const GLchar* theName,
379 const GLsizei theCount,
47e9c178 380 const OpenGl_Vec2u* theValue);
25ef750e 381
47e9c178 382 //! Specifies the value of the uvec2 uniform array
25ef750e 383 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
384 GLint theLocation,
385 const GLsizei theCount,
47e9c178 386 const OpenGl_Vec2u* theValue);
25ef750e 387
388public:
389
30f0ad28 390 //! Specifies the value of the float uniform variable.
391 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
392 const GLchar* theName,
393 GLfloat theValue);
394
395 //! Specifies the value of the float uniform variable.
396 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
397 GLint theLocation,
398 GLfloat theValue);
399
400 //! Specifies the value of the float uniform 2D vector.
401 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
402 const GLchar* theName,
403 const OpenGl_Vec2& theValue);
404
405 //! Specifies the value of the float uniform 2D vector.
406 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
407 GLint theLocation,
408 const OpenGl_Vec2& theValue);
409
410 //! Specifies the value of the float uniform 3D vector.
411 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
412 const GLchar* theName,
413 const OpenGl_Vec3& theValue);
414
415 //! Specifies the value of the float uniform 3D vector.
416 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
417 GLint theLocation,
418 const OpenGl_Vec3& theValue);
419
420 //! Specifies the value of the float uniform 4D vector.
421 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
422 const GLchar* theName,
423 const OpenGl_Vec4& theValue);
424
425 //! Specifies the value of the float uniform 4D vector.
426 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
427 GLint theLocation,
428 const OpenGl_Vec4& theValue);
429
430public:
431
432 //! Specifies the value of the float uniform 4x4 matrix.
433 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
434 const GLchar* theName,
25ef750e 435 const OpenGl_Mat4& theValue,
436 GLboolean theTranspose = GL_FALSE);
437
438 //! Specifies the value of the float uniform 4x4 matrix.
439 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
440 GLint theLocation,
441 const OpenGl_Mat4& theValue,
442 GLboolean theTranspose = GL_FALSE);
443
444 //! Specifies the value of the float uniform 4x4 matrix.
445 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
446 const GLchar* theName,
30f0ad28 447 const OpenGl_Matrix& theValue,
448 GLboolean theTranspose = GL_FALSE);
449
450 //! Specifies the value of the float uniform 4x4 matrix.
451 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
452 GLint theLocation,
453 const OpenGl_Matrix& theValue,
454 GLboolean theTranspose = GL_FALSE);
455
4fe9ad57 456 //! Specifies the value of the float uniform array
457 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
458 GLint theLocation,
459 GLuint theCount,
460 const Standard_ShortReal* theData);
461
462 //! Specifies the value of the float2 uniform array
463 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
464 GLint theLocation,
465 GLuint theCount,
466 const OpenGl_Vec2* theData);
467
468 //! Specifies the value of the float3 uniform array
469 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
470 GLint theLocation,
471 GLuint theCount,
472 const OpenGl_Vec3* theData);
473
474 //! Specifies the value of the float4 uniform array
475 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
476 GLint theLocation,
477 GLuint theCount,
478 const OpenGl_Vec4* theData);
479
480 //! Specifies the value of the integer uniform array
481 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
482 GLint theLocation,
483 GLuint theCount,
484 const Standard_Integer* theData);
485
486 //! Specifies the value of the int2 uniform array
487 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
488 GLint theLocation,
489 GLuint theCount,
490 const OpenGl_Vec2i* theData);
491
492 //! Specifies the value of the int3 uniform array
493 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
494 GLint theLocation,
495 GLuint theCount,
496 const OpenGl_Vec3i* theData);
497
498 //! Specifies the value of the int4 uniform array
499 Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx,
500 GLint theLocation,
501 GLuint theCount,
502 const OpenGl_Vec4i* theData);
503
30f0ad28 504public:
505
506 //! Specifies the value of the sampler uniform variable.
507 Standard_EXPORT Standard_Boolean SetSampler (const Handle(OpenGl_Context)& theCtx,
508 const GLchar* theName,
509 const GLenum theTextureUnit);
510
511 //! Specifies the value of the sampler uniform variable.
512 Standard_EXPORT Standard_Boolean SetSampler (const Handle(OpenGl_Context)& theCtx,
513 GLint theLocation,
514 const GLenum theTextureUnit);
515
516protected:
517
392ac980 518 //! Increments counter of users.
519 //! Used by OpenGl_ShaderManager.
05dd08ce 520 //! @return true when resource has been restored from delayed release queue
521 bool Share()
392ac980 522 {
05dd08ce 523 return ++myShareCount == 1;
392ac980 524 }
525
526 //! Decrements counter of users.
527 //! Used by OpenGl_ShaderManager.
528 //! @return true when there are no more users of this program has been left
529 bool UnShare()
530 {
531 return --myShareCount == 0;
532 }
533
534protected:
535
536 GLuint myProgramID; //!< Handle of OpenGL shader program
537 OpenGl_ShaderList myShaderObjects; //!< List of attached shader objects
538 Handle(Graphic3d_ShaderProgram) myProxy; //!< Proxy shader program (from application layer)
539 Standard_Integer myShareCount; //!< program users count, initialized with 1 (already shared by one user)
30f0ad28 540
541protected:
542
8625ef7e 543 Standard_Size myCurrentState[MaxStateTypes]; //!< defines last modification for variables of each state type
30f0ad28 544
545 //! Stores locations of OCCT state uniform variables.
546 GLint myStateLocations[OpenGl_OCCT_NUMBER_OF_STATE_VARIABLES];
547
548public:
549
92efcf78 550 DEFINE_STANDARD_RTTIEXT(OpenGl_ShaderProgram,OpenGl_Resource)
30f0ad28 551 friend class OpenGl_ShaderManager;
552
553};
554
555template<class T>
556struct OpenGl_VariableSetter : public OpenGl_SetterInterface
557{
558 virtual void Set (const Handle(OpenGl_Context)& theCtx,
559 const Handle(Graphic3d_ShaderVariable)& theVariable,
560 OpenGl_ShaderProgram* theProgram)
561 {
562 theProgram->SetUniform (theCtx,
563 theVariable->Name().ToCString(),
564 theVariable->Value()->As<T>());
565 }
566};
567
568namespace OpenGl_HashMapInitializer
569{
570 template<class K, class V>
571 struct MapListOfType
572 {
573 NCollection_DataMap<K, V> myDictionary;
574
575 MapListOfType (K theKey, V theValue)
576 {
577 myDictionary.Bind (theKey, theValue);
578 }
579
580 MapListOfType& operator() (K theKey, V theValue)
581 {
582 myDictionary.Bind (theKey, theValue);
583 return *this;
584 }
585
586 operator const NCollection_DataMap<K, V>& () const
587 {
588 return myDictionary;
589 }
590 };
591
592 template<class K, class V>
593 MapListOfType<K, V> CreateListOf (K theKey, V theValue)
594 {
595 return MapListOfType<K, V> (theKey, theValue);
596 }
597}
598
599#endif // _OpenGl_ShaderProgram_Header