| 1 | // Created on: 2013-09-19 |
| 2 | // Created by: Denis BOGOLEPOV |
| 3 | // Copyright (c) 2013-2014 OPEN CASCADE SAS |
| 4 | // |
| 5 | // This file is part of Open CASCADE Technology software library. |
| 6 | // |
| 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 |
| 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. |
| 12 | // |
| 13 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 14 | // commercial license or contractual agreement. |
| 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 <OpenGl_Vec.hxx> |
| 27 | #include <OpenGl_Matrix.hxx> |
| 28 | #include <OpenGl_NamedResource.hxx> |
| 29 | #include <OpenGl_ShaderObject.hxx> |
| 30 | |
| 31 | class OpenGl_ShaderProgram; |
| 32 | DEFINE_STANDARD_HANDLE(OpenGl_ShaderProgram, OpenGl_NamedResource) |
| 33 | |
| 34 | //! The enumeration of OCCT-specific OpenGL/GLSL variables. |
| 35 | enum OpenGl_StateVariable |
| 36 | { |
| 37 | // OpenGL matrix state |
| 38 | OpenGl_OCC_MODEL_WORLD_MATRIX, |
| 39 | OpenGl_OCC_WORLD_VIEW_MATRIX, |
| 40 | OpenGl_OCC_PROJECTION_MATRIX, |
| 41 | OpenGl_OCC_MODEL_WORLD_MATRIX_INVERSE, |
| 42 | OpenGl_OCC_WORLD_VIEW_MATRIX_INVERSE, |
| 43 | OpenGl_OCC_PROJECTION_MATRIX_INVERSE, |
| 44 | OpenGl_OCC_MODEL_WORLD_MATRIX_TRANSPOSE, |
| 45 | OpenGl_OCC_WORLD_VIEW_MATRIX_TRANSPOSE, |
| 46 | OpenGl_OCC_PROJECTION_MATRIX_TRANSPOSE, |
| 47 | OpenGl_OCC_MODEL_WORLD_MATRIX_INVERSE_TRANSPOSE, |
| 48 | OpenGl_OCC_WORLD_VIEW_MATRIX_INVERSE_TRANSPOSE, |
| 49 | OpenGl_OCC_PROJECTION_MATRIX_INVERSE_TRANSPOSE, |
| 50 | |
| 51 | // OpenGL clip planes state |
| 52 | OpenGl_OCC_CLIP_PLANE_EQUATIONS, |
| 53 | OpenGl_OCC_CLIP_PLANE_COUNT, |
| 54 | |
| 55 | // OpenGL light state |
| 56 | OpenGl_OCC_LIGHT_SOURCE_COUNT, |
| 57 | OpenGl_OCC_LIGHT_SOURCE_TYPES, |
| 58 | OpenGl_OCC_LIGHT_SOURCE_PARAMS, |
| 59 | OpenGl_OCC_LIGHT_AMBIENT, |
| 60 | |
| 61 | // Material state |
| 62 | OpenGl_OCCT_TEXTURE_ENABLE, |
| 63 | OpenGl_OCCT_DISTINGUISH_MODE, |
| 64 | OpenGl_OCCT_FRONT_MATERIAL, |
| 65 | OpenGl_OCCT_BACK_MATERIAL, |
| 66 | OpenGl_OCCT_COLOR, |
| 67 | |
| 68 | // Weighted, Blended Order-Independent Transparency rendering state |
| 69 | OpenGl_OCCT_OIT_OUTPUT, |
| 70 | OpenGl_OCCT_OIT_DEPTH_FACTOR, |
| 71 | |
| 72 | // Context-dependent state |
| 73 | OpenGl_OCCT_TEXTURE_TRSF2D, |
| 74 | OpenGl_OCCT_POINT_SIZE, |
| 75 | |
| 76 | // DON'T MODIFY THIS ITEM (insert new items before it) |
| 77 | OpenGl_OCCT_NUMBER_OF_STATE_VARIABLES |
| 78 | }; |
| 79 | |
| 80 | //! Interface for generic setter of user-defined uniform variables. |
| 81 | struct OpenGl_SetterInterface |
| 82 | { |
| 83 | //! Sets user-defined uniform variable to specified program. |
| 84 | virtual void Set (const Handle(OpenGl_Context)& theCtx, |
| 85 | const Handle(Graphic3d_ShaderVariable)& theVariable, |
| 86 | OpenGl_ShaderProgram* theProgram) = 0; |
| 87 | |
| 88 | //! Destructor |
| 89 | virtual ~OpenGl_SetterInterface() {} |
| 90 | }; |
| 91 | |
| 92 | //! List of OpenGL shader objects. |
| 93 | typedef NCollection_Sequence<Handle(OpenGl_ShaderObject)> OpenGl_ShaderList; |
| 94 | |
| 95 | //! List of shader variable setters. |
| 96 | typedef NCollection_DataMap<size_t, OpenGl_SetterInterface*> OpenGl_SetterList; |
| 97 | |
| 98 | //! Support tool for setting user-defined uniform variables. |
| 99 | class OpenGl_VariableSetterSelector |
| 100 | { |
| 101 | public: |
| 102 | |
| 103 | //! Creates new setter selector. |
| 104 | OpenGl_VariableSetterSelector(); |
| 105 | |
| 106 | //! Releases memory resources of setter selector. |
| 107 | ~OpenGl_VariableSetterSelector(); |
| 108 | |
| 109 | //! Sets user-defined uniform variable to specified program. |
| 110 | void Set (const Handle(OpenGl_Context)& theCtx, |
| 111 | const Handle(Graphic3d_ShaderVariable)& theVariable, |
| 112 | OpenGl_ShaderProgram* theProgram) const; |
| 113 | |
| 114 | private: |
| 115 | |
| 116 | //! List of variable setters. |
| 117 | OpenGl_SetterList mySetterList; |
| 118 | }; |
| 119 | |
| 120 | //! Defines types of uniform state variables. |
| 121 | enum OpenGl_UniformStateType |
| 122 | { |
| 123 | OpenGl_LIGHT_SOURCES_STATE, |
| 124 | OpenGl_CLIP_PLANES_STATE, |
| 125 | OpenGl_MODEL_WORLD_STATE, |
| 126 | OpenGl_WORLD_VIEW_STATE, |
| 127 | OpenGl_PROJECTION_STATE, |
| 128 | OpenGl_MATERIAL_STATE, |
| 129 | OpenGl_SURF_DETAIL_STATE, |
| 130 | OpenGL_OIT_STATE, |
| 131 | OpenGl_UniformStateType_NB |
| 132 | }; |
| 133 | |
| 134 | //! Wrapper for OpenGL program object. |
| 135 | class OpenGl_ShaderProgram : public OpenGl_NamedResource |
| 136 | { |
| 137 | friend class OpenGl_View; |
| 138 | friend class OpenGl_ShaderManager; |
| 139 | DEFINE_STANDARD_RTTIEXT(OpenGl_ShaderProgram, OpenGl_NamedResource) |
| 140 | public: |
| 141 | |
| 142 | //! Non-valid shader name. |
| 143 | static const GLuint NO_PROGRAM = 0; |
| 144 | |
| 145 | //! Invalid location of uniform/attribute variable. |
| 146 | static const GLint INVALID_LOCATION = -1; |
| 147 | |
| 148 | //! List of pre-defined OCCT state uniform variables. |
| 149 | static Standard_CString PredefinedKeywords[OpenGl_OCCT_NUMBER_OF_STATE_VARIABLES]; |
| 150 | |
| 151 | //! Creates uninitialized shader program. |
| 152 | //! |
| 153 | //! WARNING! This constructor is not intended to be called anywhere but from OpenGl_ShaderManager::Create(). |
| 154 | //! Manager has been designed to synchronize camera position, lights definition and other aspects of the program implicitly, |
| 155 | //! as well as sharing same program across rendering groups. |
| 156 | //! |
| 157 | //! Program created outside the manager will be left detached from these routines, |
| 158 | //! and them should be performed manually by caller. |
| 159 | //! |
| 160 | //! This constructor has been made public to provide more flexibility to re-use OCCT OpenGL classes without OCCT Viewer itself. |
| 161 | //! If this is not the case - create the program using shared OpenGl_ShaderManager instance instead. |
| 162 | Standard_EXPORT OpenGl_ShaderProgram (const Handle(Graphic3d_ShaderProgram)& theProxy = NULL); |
| 163 | |
| 164 | protected: |
| 165 | |
| 166 | static OpenGl_VariableSetterSelector mySetterSelector; |
| 167 | |
| 168 | public: |
| 169 | |
| 170 | //! Releases resources of shader program. |
| 171 | Standard_EXPORT virtual ~OpenGl_ShaderProgram(); |
| 172 | |
| 173 | //! Creates new empty shader program of specified type. |
| 174 | Standard_EXPORT Standard_Boolean Create (const Handle(OpenGl_Context)& theCtx); |
| 175 | |
| 176 | //! Destroys shader program. |
| 177 | Standard_EXPORT virtual void Release (OpenGl_Context* theCtx) Standard_OVERRIDE; |
| 178 | |
| 179 | //! Returns estimated GPU memory usage - cannot be easily estimated. |
| 180 | virtual Standard_Size EstimatedDataSize() const Standard_OVERRIDE { return 0; } |
| 181 | |
| 182 | //! Attaches shader object to the program object. |
| 183 | Standard_EXPORT Standard_Boolean AttachShader (const Handle(OpenGl_Context)& theCtx, |
| 184 | const Handle(OpenGl_ShaderObject)& theShader); |
| 185 | |
| 186 | //! Detaches shader object to the program object. |
| 187 | Standard_EXPORT Standard_Boolean DetachShader (const Handle(OpenGl_Context)& theCtx, |
| 188 | const Handle(OpenGl_ShaderObject)& theShader); |
| 189 | |
| 190 | //! Initializes program object with the list of shader objects. |
| 191 | Standard_EXPORT Standard_Boolean Initialize (const Handle(OpenGl_Context)& theCtx, |
| 192 | const Graphic3d_ShaderObjectList& theShaders); |
| 193 | |
| 194 | //! Links the program object. |
| 195 | Standard_EXPORT Standard_Boolean Link (const Handle(OpenGl_Context)& theCtx); |
| 196 | |
| 197 | //! Fetches information log of the last link operation. |
| 198 | Standard_EXPORT Standard_Boolean FetchInfoLog (const Handle(OpenGl_Context)& theCtx, |
| 199 | TCollection_AsciiString& theLog); |
| 200 | |
| 201 | //! Fetches uniform variables from proxy shader program. |
| 202 | Standard_EXPORT Standard_Boolean ApplyVariables (const Handle(OpenGl_Context)& theCtx); |
| 203 | |
| 204 | //! @return true if current object was initialized |
| 205 | inline bool IsValid() const |
| 206 | { |
| 207 | return myProgramID != NO_PROGRAM; |
| 208 | } |
| 209 | |
| 210 | //! @return program ID |
| 211 | inline GLuint ProgramId() const |
| 212 | { |
| 213 | return myProgramID; |
| 214 | } |
| 215 | |
| 216 | public: |
| 217 | |
| 218 | //! Return TRUE if program defines tessellation stage. |
| 219 | Standard_Boolean HasTessellationStage() const { return myHasTessShader; } |
| 220 | |
| 221 | //! Return the length of array of light sources (THE_MAX_LIGHTS), |
| 222 | //! to be used for initialization occLightSources (OpenGl_OCC_LIGHT_SOURCE_PARAMS). |
| 223 | Standard_Integer NbLightsMax() const { return myNbLightsMax; } |
| 224 | |
| 225 | //! Return the length of array of clipping planes (THE_MAX_CLIP_PLANES), |
| 226 | //! to be used for initialization occClipPlaneEquations (OpenGl_OCC_CLIP_PLANE_EQUATIONS). |
| 227 | Standard_Integer NbClipPlanesMax() const { return myNbClipPlanesMax; } |
| 228 | |
| 229 | //! Return the length of array of Fragment Shader outputs (THE_NB_FRAG_OUTPUTS), |
| 230 | //! to be used for initialization occFragColorArray/occFragColorN. |
| 231 | Standard_Integer NbFragmentOutputs() const { return myNbFragOutputs; } |
| 232 | |
| 233 | //! Return true if Fragment Shader color should output the weighted OIT coverage; FALSE by default. |
| 234 | Standard_Boolean HasWeightOitOutput() const { return myHasWeightOitOutput; } |
| 235 | |
| 236 | private: |
| 237 | |
| 238 | //! Returns index of last modification of variables of specified state type. |
| 239 | Standard_Size ActiveState (const OpenGl_UniformStateType theType) const |
| 240 | { |
| 241 | return theType < OpenGl_UniformStateType_NB |
| 242 | ? myCurrentState[theType] |
| 243 | : 0; |
| 244 | } |
| 245 | |
| 246 | //! Updates index of last modification of variables of specified state type. |
| 247 | void UpdateState (const OpenGl_UniformStateType theType, |
| 248 | const Standard_Size theIndex) |
| 249 | { |
| 250 | if (theType < OpenGl_UniformStateType_NB) |
| 251 | { |
| 252 | myCurrentState[theType] = theIndex; |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | public: |
| 257 | |
| 258 | //! Returns location of the specific uniform variable. |
| 259 | Standard_EXPORT GLint GetUniformLocation (const Handle(OpenGl_Context)& theCtx, |
| 260 | const GLchar* theName) const; |
| 261 | |
| 262 | //! Returns index of the generic vertex attribute by variable name. |
| 263 | Standard_EXPORT GLint GetAttributeLocation (const Handle(OpenGl_Context)& theCtx, |
| 264 | const GLchar* theName) const; |
| 265 | |
| 266 | //! Returns location of the OCCT state uniform variable. |
| 267 | Standard_EXPORT GLint GetStateLocation (const GLuint theVariable) const; |
| 268 | |
| 269 | public: |
| 270 | |
| 271 | //! Returns the value of the integer uniform variable. |
| 272 | Standard_EXPORT Standard_Boolean GetUniform (const Handle(OpenGl_Context)& theCtx, |
| 273 | const GLchar* theName, |
| 274 | OpenGl_Vec4i& theValue) const; |
| 275 | |
| 276 | Standard_EXPORT Standard_Boolean GetUniform (const Handle(OpenGl_Context)& theCtx, |
| 277 | GLint theLocation, |
| 278 | OpenGl_Vec4i& theValue) const; |
| 279 | |
| 280 | //! Returns the value of the float uniform variable. |
| 281 | Standard_EXPORT Standard_Boolean GetUniform (const Handle(OpenGl_Context)& theCtx, |
| 282 | const GLchar* theName, |
| 283 | OpenGl_Vec4& theValue) const; |
| 284 | |
| 285 | //! Returns the value of the float uniform variable. |
| 286 | Standard_EXPORT Standard_Boolean GetUniform (const Handle(OpenGl_Context)& theCtx, |
| 287 | GLint theLocation, |
| 288 | OpenGl_Vec4& theValue) const; |
| 289 | |
| 290 | public: |
| 291 | |
| 292 | //! Returns the integer vertex attribute. |
| 293 | Standard_EXPORT Standard_Boolean GetAttribute (const Handle(OpenGl_Context)& theCtx, |
| 294 | const GLchar* theName, |
| 295 | OpenGl_Vec4i& theValue) const; |
| 296 | |
| 297 | //! Returns the integer vertex attribute. |
| 298 | Standard_EXPORT Standard_Boolean GetAttribute (const Handle(OpenGl_Context)& theCtx, |
| 299 | GLint theIndex, |
| 300 | OpenGl_Vec4i& theValue) const; |
| 301 | |
| 302 | //! Returns the float vertex attribute. |
| 303 | Standard_EXPORT Standard_Boolean GetAttribute (const Handle(OpenGl_Context)& theCtx, |
| 304 | const GLchar* theName, |
| 305 | OpenGl_Vec4& theValue) const; |
| 306 | |
| 307 | //! Returns the float vertex attribute. |
| 308 | Standard_EXPORT Standard_Boolean GetAttribute (const Handle(OpenGl_Context)& theCtx, |
| 309 | GLint theIndex, |
| 310 | OpenGl_Vec4& theValue) const; |
| 311 | |
| 312 | public: |
| 313 | |
| 314 | //! Wrapper for glBindAttribLocation() |
| 315 | Standard_EXPORT Standard_Boolean SetAttributeName (const Handle(OpenGl_Context)& theCtx, |
| 316 | GLint theIndex, |
| 317 | const GLchar* theName); |
| 318 | |
| 319 | //! Wrapper for glVertexAttrib1f() |
| 320 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
| 321 | const GLchar* theName, |
| 322 | GLfloat theValue); |
| 323 | |
| 324 | //! Wrapper for glVertexAttrib1f() |
| 325 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
| 326 | GLint theIndex, |
| 327 | GLfloat theValue); |
| 328 | |
| 329 | //! Wrapper for glVertexAttrib2fv() |
| 330 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
| 331 | const GLchar* theName, |
| 332 | const OpenGl_Vec2& theValue); |
| 333 | |
| 334 | //! Wrapper for glVertexAttrib2fv() |
| 335 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
| 336 | GLint theIndex, |
| 337 | const OpenGl_Vec2& theValue); |
| 338 | |
| 339 | //! Wrapper for glVertexAttrib3fv() |
| 340 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
| 341 | const GLchar* theName, |
| 342 | const OpenGl_Vec3& theValue); |
| 343 | |
| 344 | //! Wrapper for glVertexAttrib3fv() |
| 345 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
| 346 | GLint theIndex, |
| 347 | const OpenGl_Vec3& theValue); |
| 348 | |
| 349 | //! Wrapper for glVertexAttrib4fv() |
| 350 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
| 351 | const GLchar* theName, |
| 352 | const OpenGl_Vec4& theValue); |
| 353 | |
| 354 | //! Wrapper for glVertexAttrib4fv() |
| 355 | Standard_EXPORT Standard_Boolean SetAttribute (const Handle(OpenGl_Context)& theCtx, |
| 356 | GLint theIndex, |
| 357 | const OpenGl_Vec4& theValue); |
| 358 | |
| 359 | public: |
| 360 | |
| 361 | //! Specifies the value of the integer uniform variable. |
| 362 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 363 | const GLchar* theName, |
| 364 | GLint theValue); |
| 365 | |
| 366 | //! Specifies the value of the integer uniform variable. |
| 367 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 368 | GLint theLocation, |
| 369 | GLint theValue); |
| 370 | |
| 371 | //! Specifies the value of the integer uniform 2D vector. |
| 372 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 373 | const GLchar* theName, |
| 374 | const OpenGl_Vec2i& theValue); |
| 375 | |
| 376 | //! Specifies the value of the integer uniform 2D vector. |
| 377 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 378 | GLint theLocation, |
| 379 | const OpenGl_Vec2i& theValue); |
| 380 | |
| 381 | //! Specifies the value of the integer uniform 3D vector. |
| 382 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 383 | const GLchar* theName, |
| 384 | const OpenGl_Vec3i& theValue); |
| 385 | |
| 386 | //! Specifies the value of the integer uniform 3D vector. |
| 387 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 388 | GLint theLocation, |
| 389 | const OpenGl_Vec3i& theValue); |
| 390 | |
| 391 | //! Specifies the value of the integer uniform 4D vector. |
| 392 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 393 | const GLchar* theName, |
| 394 | const OpenGl_Vec4i& theValue); |
| 395 | |
| 396 | //! Specifies the value of the integer uniform 4D vector. |
| 397 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 398 | GLint theLocation, |
| 399 | const OpenGl_Vec4i& theValue); |
| 400 | |
| 401 | public: |
| 402 | |
| 403 | //! Specifies the value of the unsigned integer uniform 2D vector (uvec2). |
| 404 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 405 | const GLchar* theName, |
| 406 | const OpenGl_Vec2u& theValue); |
| 407 | |
| 408 | //! Specifies the value of the unsigned integer uniform 2D vector (uvec2). |
| 409 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 410 | GLint theLocation, |
| 411 | const OpenGl_Vec2u& theValue); |
| 412 | |
| 413 | //! Specifies the value of the uvec2 uniform array |
| 414 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 415 | const GLchar* theName, |
| 416 | const GLsizei theCount, |
| 417 | const OpenGl_Vec2u* theValue); |
| 418 | |
| 419 | //! Specifies the value of the uvec2 uniform array |
| 420 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 421 | GLint theLocation, |
| 422 | const GLsizei theCount, |
| 423 | const OpenGl_Vec2u* theValue); |
| 424 | |
| 425 | public: |
| 426 | |
| 427 | //! Specifies the value of the float uniform variable. |
| 428 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 429 | const GLchar* theName, |
| 430 | GLfloat theValue); |
| 431 | |
| 432 | //! Specifies the value of the float uniform variable. |
| 433 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 434 | GLint theLocation, |
| 435 | GLfloat theValue); |
| 436 | |
| 437 | //! Specifies the value of the float uniform 2D vector. |
| 438 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 439 | const GLchar* theName, |
| 440 | const OpenGl_Vec2& theValue); |
| 441 | |
| 442 | //! Specifies the value of the float uniform 2D vector. |
| 443 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 444 | GLint theLocation, |
| 445 | const OpenGl_Vec2& theValue); |
| 446 | |
| 447 | //! Specifies the value of the float uniform 3D vector. |
| 448 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 449 | const GLchar* theName, |
| 450 | const OpenGl_Vec3& theValue); |
| 451 | |
| 452 | //! Specifies the value of the float uniform 3D vector. |
| 453 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 454 | GLint theLocation, |
| 455 | const OpenGl_Vec3& theValue); |
| 456 | |
| 457 | //! Specifies the value of the float uniform 4D vector. |
| 458 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 459 | const GLchar* theName, |
| 460 | const OpenGl_Vec4& theValue); |
| 461 | |
| 462 | //! Specifies the value of the float uniform 4D vector. |
| 463 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 464 | GLint theLocation, |
| 465 | const OpenGl_Vec4& theValue); |
| 466 | |
| 467 | public: |
| 468 | |
| 469 | //! Specifies the value of the float uniform 4x4 matrix. |
| 470 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 471 | const GLchar* theName, |
| 472 | const OpenGl_Mat4& theValue, |
| 473 | GLboolean theTranspose = GL_FALSE); |
| 474 | |
| 475 | //! Specifies the value of the float uniform 4x4 matrix. |
| 476 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 477 | GLint theLocation, |
| 478 | const OpenGl_Mat4& theValue, |
| 479 | GLboolean theTranspose = GL_FALSE); |
| 480 | |
| 481 | //! Specifies the value of the float uniform 4x4 matrix. |
| 482 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 483 | const GLchar* theName, |
| 484 | const OpenGl_Matrix& theValue, |
| 485 | GLboolean theTranspose = GL_FALSE); |
| 486 | |
| 487 | //! Specifies the value of the float uniform 4x4 matrix. |
| 488 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 489 | GLint theLocation, |
| 490 | const OpenGl_Matrix& theValue, |
| 491 | GLboolean theTranspose = GL_FALSE); |
| 492 | |
| 493 | //! Specifies the value of the float uniform array |
| 494 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 495 | GLint theLocation, |
| 496 | GLuint theCount, |
| 497 | const Standard_ShortReal* theData); |
| 498 | |
| 499 | //! Specifies the value of the float2 uniform array |
| 500 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 501 | GLint theLocation, |
| 502 | GLuint theCount, |
| 503 | const OpenGl_Vec2* theData); |
| 504 | |
| 505 | //! Specifies the value of the float3 uniform array |
| 506 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 507 | GLint theLocation, |
| 508 | GLuint theCount, |
| 509 | const OpenGl_Vec3* theData); |
| 510 | |
| 511 | //! Specifies the value of the float4 uniform array |
| 512 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 513 | GLint theLocation, |
| 514 | GLuint theCount, |
| 515 | const OpenGl_Vec4* theData); |
| 516 | |
| 517 | //! Specifies the value of the integer uniform array |
| 518 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 519 | GLint theLocation, |
| 520 | GLuint theCount, |
| 521 | const Standard_Integer* theData); |
| 522 | |
| 523 | //! Specifies the value of the int2 uniform array |
| 524 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 525 | GLint theLocation, |
| 526 | GLuint theCount, |
| 527 | const OpenGl_Vec2i* theData); |
| 528 | |
| 529 | //! Specifies the value of the int3 uniform array |
| 530 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 531 | GLint theLocation, |
| 532 | GLuint theCount, |
| 533 | const OpenGl_Vec3i* theData); |
| 534 | |
| 535 | //! Specifies the value of the int4 uniform array |
| 536 | Standard_EXPORT Standard_Boolean SetUniform (const Handle(OpenGl_Context)& theCtx, |
| 537 | GLint theLocation, |
| 538 | GLuint theCount, |
| 539 | const OpenGl_Vec4i* theData); |
| 540 | |
| 541 | public: |
| 542 | |
| 543 | //! Specifies the value of the sampler uniform variable. |
| 544 | Standard_EXPORT Standard_Boolean SetSampler (const Handle(OpenGl_Context)& theCtx, |
| 545 | const GLchar* theName, |
| 546 | const Graphic3d_TextureUnit theTextureUnit); |
| 547 | |
| 548 | //! Specifies the value of the sampler uniform variable. |
| 549 | Standard_EXPORT Standard_Boolean SetSampler (const Handle(OpenGl_Context)& theCtx, |
| 550 | GLint theLocation, |
| 551 | const Graphic3d_TextureUnit theTextureUnit); |
| 552 | |
| 553 | protected: |
| 554 | |
| 555 | //! Increments counter of users. |
| 556 | //! Used by OpenGl_ShaderManager. |
| 557 | //! @return true when resource has been restored from delayed release queue |
| 558 | bool Share() |
| 559 | { |
| 560 | return ++myShareCount == 1; |
| 561 | } |
| 562 | |
| 563 | //! Decrements counter of users. |
| 564 | //! Used by OpenGl_ShaderManager. |
| 565 | //! @return true when there are no more users of this program has been left |
| 566 | bool UnShare() |
| 567 | { |
| 568 | return --myShareCount == 0; |
| 569 | } |
| 570 | |
| 571 | protected: |
| 572 | |
| 573 | GLuint myProgramID; //!< Handle of OpenGL shader program |
| 574 | OpenGl_ShaderList myShaderObjects; //!< List of attached shader objects |
| 575 | Handle(Graphic3d_ShaderProgram) myProxy; //!< Proxy shader program (from application layer) |
| 576 | Standard_Integer myShareCount; //!< program users count, initialized with 1 (already shared by one user) |
| 577 | Standard_Integer myNbLightsMax; //!< length of array of light sources (THE_MAX_LIGHTS) |
| 578 | Standard_Integer myNbClipPlanesMax; //!< length of array of clipping planes (THE_MAX_CLIP_PLANES) |
| 579 | Standard_Integer myNbFragOutputs; //!< length of array of Fragment Shader outputs (THE_NB_FRAG_OUTPUTS) |
| 580 | Standard_Boolean myHasWeightOitOutput; //!< flag indicating that Fragment Shader includes weighted OIT coverage |
| 581 | Standard_Boolean myHasTessShader; //!< flag indicating that program defines tessellation stage |
| 582 | |
| 583 | protected: |
| 584 | |
| 585 | Standard_Size myCurrentState[OpenGl_UniformStateType_NB]; //!< defines last modification for variables of each state type |
| 586 | |
| 587 | //! Stores locations of OCCT state uniform variables. |
| 588 | GLint myStateLocations[OpenGl_OCCT_NUMBER_OF_STATE_VARIABLES]; |
| 589 | |
| 590 | }; |
| 591 | |
| 592 | template<class T> |
| 593 | struct OpenGl_VariableSetter : public OpenGl_SetterInterface |
| 594 | { |
| 595 | virtual void Set (const Handle(OpenGl_Context)& theCtx, |
| 596 | const Handle(Graphic3d_ShaderVariable)& theVariable, |
| 597 | OpenGl_ShaderProgram* theProgram) |
| 598 | { |
| 599 | theProgram->SetUniform (theCtx, |
| 600 | theVariable->Name().ToCString(), |
| 601 | theVariable->Value()->As<T>()); |
| 602 | } |
| 603 | }; |
| 604 | |
| 605 | namespace OpenGl_HashMapInitializer |
| 606 | { |
| 607 | template<class K, class V> |
| 608 | struct MapListOfType |
| 609 | { |
| 610 | NCollection_DataMap<K, V> myDictionary; |
| 611 | |
| 612 | MapListOfType (K theKey, V theValue) |
| 613 | { |
| 614 | myDictionary.Bind (theKey, theValue); |
| 615 | } |
| 616 | |
| 617 | MapListOfType& operator() (K theKey, V theValue) |
| 618 | { |
| 619 | myDictionary.Bind (theKey, theValue); |
| 620 | return *this; |
| 621 | } |
| 622 | |
| 623 | operator const NCollection_DataMap<K, V>& () const |
| 624 | { |
| 625 | return myDictionary; |
| 626 | } |
| 627 | }; |
| 628 | |
| 629 | template<class K, class V> |
| 630 | MapListOfType<K, V> CreateListOf (K theKey, V theValue) |
| 631 | { |
| 632 | return MapListOfType<K, V> (theKey, theValue); |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | #endif // _OpenGl_ShaderProgram_Header |