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1 | // Created on: 2013-09-19 |
2 | // Created by: Denis BOGOLEPOV |
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3 | // Copyright (c) 2013-2014 OPEN CASCADE SAS |
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4 | // |
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5 | // This file is part of Open CASCADE Technology software library. |
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6 | // |
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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 |
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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. |
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12 | // |
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13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
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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 | |
26 | #include <InterfaceGraphic_tgl_all.hxx> |
27 | |
28 | #include <OpenGl_Vec.hxx> |
29 | #include <OpenGl_Matrix.hxx> |
30 | #include <OpenGl_ShaderObject.hxx> |
31 | #include <Handle_OpenGl_ShaderProgram.hxx> |
32 | |
33 | //! The enumeration of OCCT-specific OpenGL/GLSL variables. |
34 | enum 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 |
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51 | OpenGl_OCC_CLIP_PLANE_EQUATIONS, |
52 | OpenGl_OCC_CLIP_PLANE_SPACES, |
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53 | OpenGl_OCC_CLIP_PLANE_COUNT, |
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54 | |
55 | // OpenGL light state |
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56 | OpenGl_OCC_LIGHT_SOURCE_COUNT, |
57 | OpenGl_OCC_LIGHT_SOURCE_TYPES, |
58 | OpenGl_OCC_LIGHT_SOURCE_PARAMS, |
59 | OpenGl_OCC_LIGHT_AMBIENT, |
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60 | |
61 | // Material state |
62 | OpenGl_OCCT_ACTIVE_SAMPLER, |
63 | OpenGl_OCCT_TEXTURE_ENABLE, |
64 | OpenGl_OCCT_DISTINGUISH_MODE, |
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65 | OpenGl_OCCT_FRONT_MATERIAL, |
66 | OpenGl_OCCT_BACK_MATERIAL, |
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67 | |
68 | // DON'T MODIFY THIS ITEM (insert new items before it) |
69 | OpenGl_OCCT_NUMBER_OF_STATE_VARIABLES |
70 | }; |
71 | |
72 | class OpenGl_ShaderProgram; |
73 | |
74 | //! Interface for generic setter of user-defined uniform variables. |
75 | struct OpenGl_SetterInterface |
76 | { |
77 | //! Sets user-defined uniform variable to specified program. |
78 | virtual void Set (const Handle(OpenGl_Context)& theCtx, |
79 | const Handle(Graphic3d_ShaderVariable)& theVariable, |
80 | OpenGl_ShaderProgram* theProgram) = 0; |
81 | |
82 | //! Destructor |
83 | virtual ~OpenGl_SetterInterface() {} |
84 | }; |
85 | |
86 | //! List of OpenGL shader objects. |
87 | typedef NCollection_Sequence<Handle(OpenGl_ShaderObject)> OpenGl_ShaderList; |
88 | |
89 | //! List of shader variable setters. |
90 | typedef NCollection_DataMap<size_t, OpenGl_SetterInterface*> OpenGl_SetterList; |
91 | |
92 | //! Support tool for setting user-defined uniform variables. |
93 | class OpenGl_VariableSetterSelector |
94 | { |
95 | public: |
96 | |
97 | //! Creates new setter selector. |
98 | OpenGl_VariableSetterSelector(); |
99 | |
100 | //! Releases memory resources of setter selector. |
101 | ~OpenGl_VariableSetterSelector(); |
102 | |
103 | //! Sets user-defined uniform variable to specified program. |
104 | void Set (const Handle(OpenGl_Context)& theCtx, |
105 | const Handle(Graphic3d_ShaderVariable)& theVariable, |
106 | OpenGl_ShaderProgram* theProgram) const; |
107 | |
108 | private: |
109 | |
110 | //! List of variable setters. |
111 | OpenGl_SetterList mySetterList; |
112 | }; |
113 | |
114 | //! Defines types of uniform state variables. |
115 | enum OpenGl_UniformStateType |
116 | { |
117 | OpenGl_LIGHT_SOURCES_STATE, |
118 | OpenGl_CLIP_PLANES_STATE, |
119 | OpenGl_MODEL_WORLD_STATE, |
120 | OpenGl_WORLD_VIEW_STATE, |
121 | OpenGl_PROJECTION_STATE, |
122 | OpenGl_MATERIALS_STATE |
123 | }; |
124 | |
125 | //! Total number of state types. |
126 | const int MaxStateTypes = 6; |
127 | |
128 | //! Wrapper for OpenGL program object. |
129 | class OpenGl_ShaderProgram : public OpenGl_Resource |
130 | { |
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131 | friend class OpenGl_Workspace; |
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132 | |
133 | public: |
134 | |
135 | //! Non-valid shader name. |
136 | static const GLuint NO_PROGRAM = 0; |
137 | |
138 | //! Invalid location of uniform/attribute variable. |
139 | static const GLint INVALID_LOCATION = -1; |
140 | |
141 | //! List of pre-defined OCCT state uniform variables. |
142 | static Standard_CString PredefinedKeywords[OpenGl_OCCT_NUMBER_OF_STATE_VARIABLES]; |
143 | |
144 | protected: |
145 | |
146 | //! Creates uninitialized shader program. |
147 | Standard_EXPORT OpenGl_ShaderProgram (const Handle(Graphic3d_ShaderProgram)& theProxy = NULL); |
148 | |
149 | static OpenGl_VariableSetterSelector mySetterSelector; |
150 | |
151 | public: |
152 | |
153 | //! Releases resources of shader program. |
154 | Standard_EXPORT virtual ~OpenGl_ShaderProgram(); |
155 | |
156 | //! Creates new empty shader program of specified type. |
157 | Standard_EXPORT Standard_Boolean Create (const Handle(OpenGl_Context)& theCtx); |
158 | |
159 | //! Destroys shader program. |
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160 | Standard_EXPORT virtual void Release (OpenGl_Context* theCtx); |
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161 | |
162 | //! Attaches shader object to the program object. |
163 | Standard_EXPORT Standard_Boolean AttachShader (const Handle(OpenGl_Context)& theCtx, |
164 | const Handle(OpenGl_ShaderObject)& theShader); |
165 | |
166 | //! Detaches shader object to the program object. |
167 | Standard_EXPORT Standard_Boolean DetachShader (const Handle(OpenGl_Context)& theCtx, |
168 | const Handle(OpenGl_ShaderObject)& theShader); |
169 | |
170 | //! Initializes program object with the list of shader objects. |
171 | Standard_EXPORT Standard_Boolean Initialize (const Handle(OpenGl_Context)& theCtx, |
172 | const Graphic3d_ShaderObjectList& theShaders); |
173 | |
174 | //! Links the program object. |
175 | Standard_EXPORT Standard_Boolean Link (const Handle(OpenGl_Context)& theCtx); |
176 | |
177 | //! Fetches information log of the last link operation. |
178 | Standard_EXPORT Standard_Boolean FetchInfoLog (const Handle(OpenGl_Context)& theCtx, |
179 | TCollection_AsciiString& theLog); |
180 | |
181 | //! Fetches uniform variables from proxy shader program. |
182 | Standard_EXPORT Standard_Boolean ApplyVariables (const Handle(OpenGl_Context)& theCtx); |
183 | |
184 | //! Sets the program object as part of current rendering state. |
185 | Standard_EXPORT void Bind (const Handle(OpenGl_Context)& theCtx) const; |
186 | |
187 | //! Binds the program object and applies variables from proxy shader program. |
188 | Standard_EXPORT Standard_Boolean BindWithVariables (const Handle(OpenGl_Context)& theCtx); |
189 | |
190 | //! Reverts to fixed-function graphics pipeline (FFP). |
191 | Standard_EXPORT static void Unbind (const Handle(OpenGl_Context)& theCtx); |
192 | |
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193 | //! @return true if current object was initialized |
194 | inline bool IsValid() const |
195 | { |
196 | return myProgramID != NO_PROGRAM; |
197 | } |
198 | |
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199 | private: |
200 | |
201 | //! Returns index of last modification of variables of specified state type. |
202 | Standard_EXPORT Standard_Size ActiveState (const OpenGl_UniformStateType theType) const; |
203 | |
204 | //! Updates index of last modification of variables of specified state type. |
205 | Standard_EXPORT void UpdateState (const OpenGl_UniformStateType theType, |
206 | const Standard_Size theIndex); |
207 | |
208 | public: |
209 | |
210 | //! Returns location of the specific uniform variable. |
211 | Standard_EXPORT GLint GetUniformLocation (const Handle(OpenGl_Context)& theCtx, |
212 | const GLchar* theName) const; |
213 | |
214 | //! Returns index of the generic vertex attribute by variable name. |
215 | Standard_EXPORT GLint GetAttributeLocation (const Handle(OpenGl_Context)& theCtx, |
216 | const GLchar* theName) const; |
217 | |
218 | //! Returns location of the OCCT state uniform variable. |
219 | Standard_EXPORT GLint GetStateLocation (const GLuint theVariable) const; |
220 | |
221 | public: |
222 | |
223 | //! Returns the value of the integer uniform variable. |
224 | Standard_EXPORT Standard_Boolean GetUniform (const Handle(OpenGl_Context)& theCtx, |
225 | const GLchar* theName, |
226 | OpenGl_Vec4i& theValue) const; |
227 | |
228 | Standard_EXPORT Standard_Boolean GetUniform (const Handle(OpenGl_Context)& theCtx, |
229 | GLint theLocation, |
230 | OpenGl_Vec4i& theValue) const; |
231 | |
232 | //! Returns the value of the float uniform variable. |
233 | Standard_EXPORT Standard_Boolean GetUniform (const Handle(OpenGl_Context)& theCtx, |
234 | const GLchar* theName, |
235 | OpenGl_Vec4& theValue) const; |
236 | |
237 | //! Returns the value of the float uniform variable. |
238 | Standard_EXPORT Standard_Boolean GetUniform (const Handle(OpenGl_Context)& theCtx, |
239 | GLint theLocation, |
240 | OpenGl_Vec4& theValue) const; |
241 | |
242 | public: |
243 | |
244 | //! Returns the integer vertex attribute. |
245 | Standard_EXPORT Standard_Boolean GetAttribute (const Handle(OpenGl_Context)& theCtx, |
246 | const GLchar* theName, |
247 | OpenGl_Vec4i& theValue) const; |
248 | |
249 | //! Returns the integer vertex attribute. |
250 | Standard_EXPORT Standard_Boolean GetAttribute (const Handle(OpenGl_Context)& theCtx, |
251 | GLint theIndex, |
252 | OpenGl_Vec4i& theValue) const; |
253 | |
254 | //! Returns the float vertex attribute. |
255 | Standard_EXPORT Standard_Boolean GetAttribute (const Handle(OpenGl_Context)& theCtx, |
256 | const GLchar* theName, |
257 | OpenGl_Vec4& theValue) const; |
258 | |
259 | //! Returns the float vertex attribute. |
260 | Standard_EXPORT Standard_Boolean GetAttribute (const Handle(OpenGl_Context)& theCtx, |
261 | GLint theIndex, |
262 | OpenGl_Vec4& theValue) const; |
263 | |
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264 | public: |
265 | |
266 | //! Wrapper for glBindAttribLocation() |
267 | Standard_EXPORT Standard_Boolean SetAttributeName (const Handle(OpenGl_Context)& theCtx, |
268 | GLint theIndex, |
269 | const GLchar* theName); |
270 | |
271 | //! Wrapper for glVertexAttrib1f() |
272 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
273 | const GLchar* theName, |
274 | GLfloat theValue); |
275 | |
276 | //! Wrapper for glVertexAttrib1f() |
277 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
278 | GLint theIndex, |
279 | GLfloat theValue); |
280 | |
281 | //! Wrapper for glVertexAttrib2fv() |
282 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
283 | const GLchar* theName, |
284 | const OpenGl_Vec2& theValue); |
285 | |
286 | //! Wrapper for glVertexAttrib2fv() |
287 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
288 | GLint theIndex, |
289 | const OpenGl_Vec2& theValue); |
290 | |
291 | //! Wrapper for glVertexAttrib3fv() |
292 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
293 | const GLchar* theName, |
294 | const OpenGl_Vec3& theValue); |
295 | |
296 | //! Wrapper for glVertexAttrib3fv() |
297 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
298 | GLint theIndex, |
299 | const OpenGl_Vec3& theValue); |
300 | |
301 | //! Wrapper for glVertexAttrib4fv() |
302 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
303 | const GLchar* theName, |
304 | const OpenGl_Vec4& theValue); |
305 | |
306 | //! Wrapper for glVertexAttrib4fv() |
307 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
308 | GLint theIndex, |
309 | const OpenGl_Vec4& theValue); |
310 | |
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311 | public: |
312 | |
313 | //! Specifies the value of the integer uniform variable. |
314 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
315 | const GLchar* theName, |
316 | GLint theValue); |
317 | |
318 | //! Specifies the value of the integer uniform variable. |
319 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
320 | GLint theLocation, |
321 | GLint theValue); |
322 | |
323 | //! Specifies the value of the integer uniform 2D vector. |
324 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
325 | const GLchar* theName, |
326 | const OpenGl_Vec2i& theValue); |
327 | |
328 | //! Specifies the value of the integer uniform 2D vector. |
329 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
330 | GLint theLocation, |
331 | const OpenGl_Vec2i& theValue); |
332 | |
333 | //! Specifies the value of the integer uniform 3D vector. |
334 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
335 | const GLchar* theName, |
336 | const OpenGl_Vec3i& theValue); |
337 | |
338 | //! Specifies the value of the integer uniform 3D vector. |
339 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
340 | GLint theLocation, |
341 | const OpenGl_Vec3i& theValue); |
342 | |
343 | //! Specifies the value of the integer uniform 4D vector. |
344 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
345 | const GLchar* theName, |
346 | const OpenGl_Vec4i& theValue); |
347 | |
348 | //! Specifies the value of the integer uniform 4D vector. |
349 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
350 | GLint theLocation, |
351 | const OpenGl_Vec4i& theValue); |
352 | |
353 | public: |
354 | |
355 | //! Specifies the value of the float uniform variable. |
356 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
357 | const GLchar* theName, |
358 | GLfloat theValue); |
359 | |
360 | //! Specifies the value of the float uniform variable. |
361 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
362 | GLint theLocation, |
363 | GLfloat theValue); |
364 | |
365 | //! Specifies the value of the float uniform 2D vector. |
366 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
367 | const GLchar* theName, |
368 | const OpenGl_Vec2& theValue); |
369 | |
370 | //! Specifies the value of the float uniform 2D vector. |
371 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
372 | GLint theLocation, |
373 | const OpenGl_Vec2& theValue); |
374 | |
375 | //! Specifies the value of the float uniform 3D vector. |
376 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
377 | const GLchar* theName, |
378 | const OpenGl_Vec3& theValue); |
379 | |
380 | //! Specifies the value of the float uniform 3D vector. |
381 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
382 | GLint theLocation, |
383 | const OpenGl_Vec3& theValue); |
384 | |
385 | //! Specifies the value of the float uniform 4D vector. |
386 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
387 | const GLchar* theName, |
388 | const OpenGl_Vec4& theValue); |
389 | |
390 | //! Specifies the value of the float uniform 4D vector. |
391 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
392 | GLint theLocation, |
393 | const OpenGl_Vec4& theValue); |
394 | |
395 | public: |
396 | |
397 | //! Specifies the value of the float uniform 4x4 matrix. |
398 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
399 | const GLchar* theName, |
400 | const OpenGl_Matrix& theValue, |
401 | GLboolean theTranspose = GL_FALSE); |
402 | |
403 | //! Specifies the value of the float uniform 4x4 matrix. |
404 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
405 | GLint theLocation, |
406 | const OpenGl_Matrix& theValue, |
407 | GLboolean theTranspose = GL_FALSE); |
408 | |
409 | //! Specifies the value of the float uniform 4x4 matrix. |
410 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
411 | const GLchar* theName, |
412 | const Tmatrix3& theValue, |
413 | GLboolean theTranspose = GL_FALSE); |
414 | |
415 | //! Specifies the value of the float uniform 4x4 matrix. |
416 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
417 | GLint theLocation, |
418 | const Tmatrix3& theValue, |
419 | GLboolean theTranspose = GL_FALSE); |
420 | |
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421 | //! Specifies the value of the float uniform array |
422 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
423 | GLint theLocation, |
424 | GLuint theCount, |
425 | const Standard_ShortReal* theData); |
426 | |
427 | //! Specifies the value of the float2 uniform array |
428 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
429 | GLint theLocation, |
430 | GLuint theCount, |
431 | const OpenGl_Vec2* theData); |
432 | |
433 | //! Specifies the value of the float3 uniform array |
434 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
435 | GLint theLocation, |
436 | GLuint theCount, |
437 | const OpenGl_Vec3* theData); |
438 | |
439 | //! Specifies the value of the float4 uniform array |
440 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
441 | GLint theLocation, |
442 | GLuint theCount, |
443 | const OpenGl_Vec4* theData); |
444 | |
445 | //! Specifies the value of the integer uniform array |
446 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
447 | GLint theLocation, |
448 | GLuint theCount, |
449 | const Standard_Integer* theData); |
450 | |
451 | //! Specifies the value of the int2 uniform array |
452 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
453 | GLint theLocation, |
454 | GLuint theCount, |
455 | const OpenGl_Vec2i* theData); |
456 | |
457 | //! Specifies the value of the int3 uniform array |
458 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
459 | GLint theLocation, |
460 | GLuint theCount, |
461 | const OpenGl_Vec3i* theData); |
462 | |
463 | //! Specifies the value of the int4 uniform array |
464 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
465 | GLint theLocation, |
466 | GLuint theCount, |
467 | const OpenGl_Vec4i* theData); |
468 | |
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469 | public: |
470 | |
471 | //! Specifies the value of the sampler uniform variable. |
472 | Standard_EXPORT Standard_Boolean SetSampler (const Handle(OpenGl_Context)& theCtx, |
473 | const GLchar* theName, |
474 | const GLenum theTextureUnit); |
475 | |
476 | //! Specifies the value of the sampler uniform variable. |
477 | Standard_EXPORT Standard_Boolean SetSampler (const Handle(OpenGl_Context)& theCtx, |
478 | GLint theLocation, |
479 | const GLenum theTextureUnit); |
480 | |
481 | protected: |
482 | |
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483 | //! Increments counter of users. |
484 | //! Used by OpenGl_ShaderManager. |
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485 | //! @return true when resource has been restored from delayed release queue |
486 | bool Share() |
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487 | { |
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488 | return ++myShareCount == 1; |
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489 | } |
490 | |
491 | //! Decrements counter of users. |
492 | //! Used by OpenGl_ShaderManager. |
493 | //! @return true when there are no more users of this program has been left |
494 | bool UnShare() |
495 | { |
496 | return --myShareCount == 0; |
497 | } |
498 | |
499 | protected: |
500 | |
501 | GLuint myProgramID; //!< Handle of OpenGL shader program |
502 | OpenGl_ShaderList myShaderObjects; //!< List of attached shader objects |
503 | Handle(Graphic3d_ShaderProgram) myProxy; //!< Proxy shader program (from application layer) |
504 | Standard_Integer myShareCount; //!< program users count, initialized with 1 (already shared by one user) |
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505 | |
506 | protected: |
507 | |
508 | //! Defines last modification for variables of each state type. |
509 | Standard_Size myCurrentState[MaxStateTypes]; |
510 | |
511 | //! Stores locations of OCCT state uniform variables. |
512 | GLint myStateLocations[OpenGl_OCCT_NUMBER_OF_STATE_VARIABLES]; |
513 | |
514 | public: |
515 | |
516 | DEFINE_STANDARD_RTTI (OpenGl_ShaderProgram) |
517 | friend class OpenGl_ShaderManager; |
518 | |
519 | }; |
520 | |
521 | template<class T> |
522 | struct OpenGl_VariableSetter : public OpenGl_SetterInterface |
523 | { |
524 | virtual void Set (const Handle(OpenGl_Context)& theCtx, |
525 | const Handle(Graphic3d_ShaderVariable)& theVariable, |
526 | OpenGl_ShaderProgram* theProgram) |
527 | { |
528 | theProgram->SetUniform (theCtx, |
529 | theVariable->Name().ToCString(), |
530 | theVariable->Value()->As<T>()); |
531 | } |
532 | }; |
533 | |
534 | namespace OpenGl_HashMapInitializer |
535 | { |
536 | template<class K, class V> |
537 | struct MapListOfType |
538 | { |
539 | NCollection_DataMap<K, V> myDictionary; |
540 | |
541 | MapListOfType (K theKey, V theValue) |
542 | { |
543 | myDictionary.Bind (theKey, theValue); |
544 | } |
545 | |
546 | MapListOfType& operator() (K theKey, V theValue) |
547 | { |
548 | myDictionary.Bind (theKey, theValue); |
549 | return *this; |
550 | } |
551 | |
552 | operator const NCollection_DataMap<K, V>& () const |
553 | { |
554 | return myDictionary; |
555 | } |
556 | }; |
557 | |
558 | template<class K, class V> |
559 | MapListOfType<K, V> CreateListOf (K theKey, V theValue) |
560 | { |
561 | return MapListOfType<K, V> (theKey, theValue); |
562 | } |
563 | } |
564 | |
565 | #endif // _OpenGl_ShaderProgram_Header |