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| 2 | ** | 
| 3 | ** Copyright (C) 2019 Klaralvdalens Datakonsult AB (KDAB). | 
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| 38 | ****************************************************************************/ | 
| 39 |  | 
| 40 | #include "qshaderimage.h" | 
| 41 | #include "qshaderimage_p.h" | 
| 42 | #include <Qt3DRender/qabstracttexture.h> | 
| 43 |  | 
| 44 | QT_BEGIN_NAMESPACE | 
| 45 |  | 
| 46 | namespace Qt3DRender { | 
| 47 |  | 
| 48 | QShaderImagePrivate::QShaderImagePrivate() | 
| 49 |     : Qt3DCore::QNodePrivate() | 
| 50 |     , m_texture(nullptr) | 
| 51 |     , m_mipLevel(0) | 
| 52 |     , m_layer(0) | 
| 53 |     , m_access(QShaderImage::ReadWrite) | 
| 54 |     , m_format(QShaderImage::Automatic) | 
| 55 |     , m_layered(false) | 
| 56 | { | 
| 57 | } | 
| 58 |  | 
| 59 | QShaderImagePrivate::~QShaderImagePrivate() | 
| 60 | { | 
| 61 | } | 
| 62 |  | 
| 63 | /*! | 
| 64 |     \qmltype ShaderImage | 
| 65 |     \instantiates Qt3DRender::QShaderImage | 
| 66 |     \inqmlmodule Qt3D.Render | 
| 67 |     \since 5.14 | 
| 68 |     \brief Provides Image access to shader programs. | 
| 69 |  | 
| 70 |     To make the content of textures available for read and write operations in | 
| 71 |     a shader, they need to exposed as ShaderImage. Textures can be composed of | 
| 72 |     several mip levels, layers and faces. Additionally declaring a ShaderImage | 
| 73 |     allows specifying which level, layer or face of the texture content we want | 
| 74 |     to access. | 
| 75 |  | 
| 76 |     ShaderImage has to be assigned as a Parameter's value and reference a valid | 
| 77 |     Qt3D.Render.AbstractTexture to work properly. | 
| 78 |  | 
| 79 |     If the referenced texture is a one-dimensional array, two-dimensional array, | 
| 80 |     three-dimensional, cube map, cube map array, or two-dimensional multisample | 
| 81 |     array texture, it is possible to bind either the entire texture level or a | 
| 82 |     single layer or face of the texture level. This can be controlled with the | 
| 83 |     \l layered property. | 
| 84 |  | 
| 85 |     Support for ShaderImage is only supported with OpenGL 4 and partially with | 
| 86 |     OpenGL ES 3.1 and 3.2. | 
| 87 |  | 
| 88 |     OpenGL 4 supports the following image types: | 
| 89 |     \table | 
| 90 |     \header | 
| 91 |        \li GLSL Type | 
| 92 |        \li OpenGL Type Enum | 
| 93 |        \li Texture Type | 
| 94 |     \row | 
| 95 |        \li image1D | 
| 96 |        \li GL_IMAGE_1D | 
| 97 |        \li Texture1D | 
| 98 |     \row | 
| 99 |        \li image2D | 
| 100 |        \li GL_IMAGE_2D | 
| 101 |        \li Texture2D | 
| 102 |     \row | 
| 103 |        \li image3D | 
| 104 |        \li GL_IMAGE_3D | 
| 105 |        \li Texture3D | 
| 106 |     \row | 
| 107 |        \li image2DRect | 
| 108 |        \li GL_IMAGE_2D_RECT | 
| 109 |        \li TextureRectangle | 
| 110 |     \row | 
| 111 |        \li imageCube | 
| 112 |        \li GL_IMAGE_CUBE | 
| 113 |        \li TextureCubeMap | 
| 114 |     \row | 
| 115 |        \li imageBuffer | 
| 116 |        \li GL_IMAGE_BUFFER | 
| 117 |        \li TextureBuffer | 
| 118 |     \row | 
| 119 |        \li image1DArray | 
| 120 |        \li GL_IMAGE_1D_ARRAY | 
| 121 |        \li Texture1DArray | 
| 122 |     \row | 
| 123 |        \li image2DArray | 
| 124 |        \li GL_IMAGE_2D_ARRAY | 
| 125 |        \li Texture2DArray | 
| 126 |     \row | 
| 127 |        \li imageCubeArray | 
| 128 |        \li GL_IMAGE_CUBE_MAP_ARRAY | 
| 129 |        \li TextureCubeMapArray | 
| 130 |     \row | 
| 131 |        \li image2DMS | 
| 132 |        \li GL_IMAGE_2D_MULTISAMPLE | 
| 133 |        \li Texture2DMultisample | 
| 134 |     \row | 
| 135 |        \li image2DMSArray | 
| 136 |        \li GL_IMAGE_2D_MULTISAMPLE_ARRAY | 
| 137 |        \li Texture2DMultisampleArray | 
| 138 |     \row | 
| 139 |        \li iimage1D | 
| 140 |        \li GL_INT_IMAGE_1D | 
| 141 |        \li Texture1D | 
| 142 |     \row | 
| 143 |        \li iimage2D | 
| 144 |        \li GL_INT_IMAGE_2D | 
| 145 |        \li Texture2D | 
| 146 |     \row | 
| 147 |        \li iimage3D | 
| 148 |        \li GL_INT_IMAGE_3D | 
| 149 |        \li Texture3D | 
| 150 |     \row | 
| 151 |        \li iimage2DRect | 
| 152 |        \li GL_INT_IMAGE_2D_RECT | 
| 153 |        \li TextureRectangle | 
| 154 |     \row | 
| 155 |        \li iimageCube | 
| 156 |        \li GL_INT_IMAGE_CUBE | 
| 157 |        \li TextureCubeMap | 
| 158 |     \row | 
| 159 |        \li iimageBuffer | 
| 160 |        \li GL_INT_IMAGE_BUFFER | 
| 161 |        \li TextureBuffer | 
| 162 |     \row | 
| 163 |        \li iimage1DArray | 
| 164 |        \li GL_INT_IMAGE_1D_ARRAY | 
| 165 |        \li Texture1DArray | 
| 166 |     \row | 
| 167 |        \li iimage2DArray | 
| 168 |        \li GL_INT_IMAGE_2D_ARRAY | 
| 169 |        \li Texture2DArray | 
| 170 |     \row | 
| 171 |        \li iimageCubeArray | 
| 172 |        \li GL_INT_IMAGE_CUBE_MAP_ARRAY | 
| 173 |        \li TextureCubeMapArray | 
| 174 |     \row | 
| 175 |        \li iimage2DMS | 
| 176 |        \li GL_INT_IMAGE_2D_MULTISAMPLE | 
| 177 |        \li Texture2DMultisample | 
| 178 |     \row | 
| 179 |        \li iimage2DMSArray | 
| 180 |        \li GL_INT_IMAGE_2D_MULTISAMPLE_ARRAY | 
| 181 |        \li Texture2DMultisampleArray | 
| 182 |     \row | 
| 183 |        \li uimage1D | 
| 184 |        \li GL_UNSIGNED_INT_IMAGE_1D | 
| 185 |        \li Texture1D | 
| 186 |     \row | 
| 187 |        \li uimage2D | 
| 188 |        \li GL_UNSIGNED_INT_IMAGE_2D | 
| 189 |        \li Texture2D | 
| 190 |     \row | 
| 191 |        \li uimage3D | 
| 192 |        \li GL_UNSIGNED_INT_IMAGE_3D | 
| 193 |        \li Texture3D | 
| 194 |     \row | 
| 195 |        \li uimage2DRect | 
| 196 |        \li GL_UNSIGNED_INT_IMAGE_2D_RECT | 
| 197 |        \li TextureRectangle | 
| 198 |     \row | 
| 199 |        \li uimageCube | 
| 200 |        \li GL_UNSIGNED_INT_IMAGE_CUBE | 
| 201 |        \li TextureCubeMap | 
| 202 |     \row | 
| 203 |        \li uimageBuffer | 
| 204 |        \li GL_UNSIGNED_INT_IMAGE_BUFFER | 
| 205 |        \li TextureBuffer | 
| 206 |     \row | 
| 207 |        \li uimage1DArray | 
| 208 |        \li GL_UNSIGNED_INT_IMAGE_1D_ARRAY | 
| 209 |        \li Texture1DArray | 
| 210 |     \row | 
| 211 |        \li uimage2DArray | 
| 212 |        \li GL_UNSIGNED_INT_IMAGE_2D_ARRAY | 
| 213 |        \li Texture2DArray | 
| 214 |     \row | 
| 215 |        \li uimageCubeArray | 
| 216 |        \li GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY | 
| 217 |        \li TextureCubeMapArray | 
| 218 |     \row | 
| 219 |        \li uimage2DMS | 
| 220 |        \li GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE | 
| 221 |        \li Texture2DMultisample | 
| 222 |     \row | 
| 223 |        \li uimage2DMSArray | 
| 224 |        \li GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE_ARRAY | 
| 225 |        \li Texture2DMultisampleArray | 
| 226 |     \endtable | 
| 227 |  | 
| 228 |     OpenGL ES 3.1 supports the following image types: | 
| 229 |     \table | 
| 230 |     \header | 
| 231 |        \li GLSL Type | 
| 232 |        \li OpenGL Type Enum | 
| 233 |        \li Texture Type | 
| 234 |     \row | 
| 235 |        \li image2D | 
| 236 |        \li GL_IMAGE_2D | 
| 237 |        \li Texture2D | 
| 238 |     \row | 
| 239 |        \li image3D | 
| 240 |        \li GL_IMAGE_3D | 
| 241 |        \li Texture3D | 
| 242 |     \row | 
| 243 |        \li imageCube | 
| 244 |        \li GL_IMAGE_CUBE | 
| 245 |        \li TextureCubeMap | 
| 246 |     \row | 
| 247 |        \li image2DArray | 
| 248 |        \li GL_IMAGE_2D_ARRAY | 
| 249 |        \li Texture2DArray | 
| 250 |     \row | 
| 251 |        \li iimage2D | 
| 252 |        \li GL_INT_IMAGE_2D | 
| 253 |        \li Texture2D | 
| 254 |     \row | 
| 255 |        \li iimage3D | 
| 256 |        \li GL_INT_IMAGE_3D | 
| 257 |        \li Texture3D | 
| 258 |     \row | 
| 259 |        \li iimageCube | 
| 260 |        \li GL_INT_IMAGE_CUBE | 
| 261 |        \li TextureCubeMap | 
| 262 |     \row | 
| 263 |        \li iimage2DArray | 
| 264 |        \li GL_INT_IMAGE_2D_ARRAY | 
| 265 |        \li Texture2DArray | 
| 266 |     \row | 
| 267 |        \li uimage2D | 
| 268 |        \li GL_UNSIGNED_INT_IMAGE_2D | 
| 269 |        \li Texture2D | 
| 270 |     \row | 
| 271 |        \li uimage3D | 
| 272 |        \li GL_UNSIGNED_INT_IMAGE_3D | 
| 273 |        \li Texture3D | 
| 274 |     \row | 
| 275 |        \li uimageCube | 
| 276 |        \li GL_UNSIGNED_INT_IMAGE_CUBE | 
| 277 |        \li TextureCubeMap | 
| 278 |     \row | 
| 279 |        \li uimage2DArray | 
| 280 |        \li GL_UNSIGNED_INT_IMAGE_2D_ARRAY | 
| 281 |        \li Texture2DArray | 
| 282 |     \endtable | 
| 283 |  | 
| 284 |     OpenGL ES 3.2 supports all of the OpenGL ES 3.1 image types as well as the | 
| 285 |     following: | 
| 286 |     \table | 
| 287 |     \header | 
| 288 |        \li GLSL Type | 
| 289 |        \li OpenGL Type Enum | 
| 290 |        \li Texture Type | 
| 291 |     \row | 
| 292 |        \li imageBuffer | 
| 293 |        \li GL_IMAGE_BUFFER | 
| 294 |        \li TextureBuffer | 
| 295 |     \row | 
| 296 |        \li imageCubeArray | 
| 297 |        \li GL_IMAGE_CUBE_MAP_ARRAY | 
| 298 |        \li TextureCubeMapArray | 
| 299 |     \row | 
| 300 |        \li iimageBuffer | 
| 301 |        \li GL_IMAGE_BUFFER | 
| 302 |        \li TextureBuffer | 
| 303 |     \row | 
| 304 |        \li iimageCubeArray | 
| 305 |        \li GL_INT_IMAGE_CUBE_MAP_ARRAY | 
| 306 |        \li TextureCubeMapArray | 
| 307 |     \row | 
| 308 |        \li uimageBuffer | 
| 309 |        \li GL_UNSIGNED_INT_IMAGE_BUFFER | 
| 310 |        \li TextureBuffer | 
| 311 |     \row | 
| 312 |        \li uimageCubeArray | 
| 313 |        \li GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY | 
| 314 |        \li TextureCubeMapArray | 
| 315 |     \endtable | 
| 316 |  | 
| 317 |     Expected use would look like: | 
| 318 |  | 
| 319 |     \badcode | 
| 320 |  | 
| 321 |     import Qt3D.Render 2.14 | 
| 322 |  | 
| 323 |     Entity { | 
| 324 |     ... | 
| 325 |         Texture2D { | 
| 326 |             id: tex2D | 
| 327 |             ... | 
| 328 |         } | 
| 329 |  | 
| 330 |         Material { | 
| 331 |             parameters: Parameter { | 
| 332 |                 name: "imageUniformName" | 
| 333 |                 value: ShaderImage { | 
| 334 |                     texture: tex2D | 
| 335 |                 } | 
| 336 |             } | 
| 337 |             ... | 
| 338 |         } | 
| 339 |      ... | 
| 340 |     } | 
| 341 |     \endcode | 
| 342 |  */ | 
| 343 |  | 
| 344 | /*! | 
| 345 |     \qmlproperty int Qt3D.Render::ShaderImage::mipLevel | 
| 346 |  | 
| 347 |     Holds which mipLevel out of the referenced texture should be used for the | 
| 348 |     ShaderImage. | 
| 349 |  | 
| 350 |     The default value is 0. | 
| 351 |  */ | 
| 352 |  | 
| 353 | /*! | 
| 354 |     \qmlproperty int Qt3D.Render::ShaderImage::layer | 
| 355 |  | 
| 356 |     Holds which layer out of the referenced texture should be used for the | 
| 357 |     ShaderImage. This property does nothing if \a layered is set to true or if | 
| 358 |     the reference texture's type isn't compatible with layers. | 
| 359 |  | 
| 360 |     \note When the referenced texture is of type cube map or cube map array and | 
| 361 |     \a ĺayered is set to false, the face and layer are retrieved in the | 
| 362 |     following manner: | 
| 363 |     \badcode | 
| 364 |     cubeMapLayer = layer / 6 | 
| 365 |     cubeMapFace = layer - (cubeMapLayer * 6) | 
| 366 |     \endcode | 
| 367 |  | 
| 368 |     The default value is 0. | 
| 369 |  */ | 
| 370 |  | 
| 371 | /*! | 
| 372 |  * \qmlproperty bool Qt3D.Render::ShaderImage::layered | 
| 373 |  | 
| 374 |     If set to true, if the referenced texture is a one-dimensional array, | 
| 375 |     two-dimensional array, three-dimensional, cube map, cube map array, or | 
| 376 |     two-dimensional multisample array texture, the entire level will be bound | 
| 377 |     for all layers. If set to false, only the single layer specified by the \a | 
| 378 |     layer property will be bound. | 
| 379 |  | 
| 380 |     The default value is \c false. | 
| 381 |  */ | 
| 382 |  | 
| 383 | /*! | 
| 384 |     \qmlproperty enumeration Qt3D.Render::ShaderImage::access | 
| 385 |  | 
| 386 |     Specifies the type of access we want to allow from our shader instances to | 
| 387 |     the image. If a shader tries to write or read from an image that has | 
| 388 |     incompatible access, the behavior is undefined. | 
| 389 |  | 
| 390 |     \value ShaderImage.ReadOnly | 
| 391 |            Read-only access. | 
| 392 |     \value ShaderImage.WriteOnly | 
| 393 |            Write-only access. | 
| 394 |     \value ShaderImage.ReadWrite | 
| 395 |            Read-write access. | 
| 396 |  | 
| 397 |     The default value is ShaderImage.ReadWrite. | 
| 398 |  */ | 
| 399 |  | 
| 400 | /*! | 
| 401 |     \qmlproperty enumeration Qt3D.Render::ShaderImage::format | 
| 402 |  | 
| 403 |     Specifies the image format, which is essentially important when storing values | 
| 404 |     in the ShaderImage from a shader. | 
| 405 |  | 
| 406 |     The format doesn't have to be the same as the referenced texture's format. | 
| 407 |     It however has to be compatible (matching in size but not necessarily by | 
| 408 |     class type). For instance a texture of format R32F (size 32bits, class | 
| 409 |     1x32) could be used with an image of format RGBA8I (size 32bits, class | 
| 410 |     4x8). Table 8.27 of the | 
| 411 |     \l{https://www.khronos.org/registry/OpenGL/specs/gl/glspec45.core.pdf}{OpenGL specifications} | 
| 412 |     shows the size and class for all supported image formats. | 
| 413 |  | 
| 414 |     By default Qt3D will try to set the image format to match that of the | 
| 415 |     referenced texture. | 
| 416 |  | 
| 417 |     The default value is ShaderImage.Automatic. | 
| 418 |  */ | 
| 419 |  | 
| 420 | /*! | 
| 421 |     \class Qt3DRender::QShaderImage | 
| 422 |     \inmodule Qt3DRender | 
| 423 |     \since 5.14 | 
| 424 |     \brief Provides Image access to shader programs. | 
| 425 |  | 
| 426 |     To make the content of textures available for read and write operations in | 
| 427 |     a shader, they need to exposed as QShaderImage. Textures can be composed of | 
| 428 |     several mip levels, layers and faces. Additionally declaring a QShaderImage | 
| 429 |     allows specifying which level, layer or face of the texture content we want | 
| 430 |     to access. | 
| 431 |  | 
| 432 |     QShaderImage has to be assigned as a QParameter's value and reference a valid | 
| 433 |     Qt3DRender::QAbstractTexture to work properly. | 
| 434 |  | 
| 435 |     If the referenced texture is a one-dimensional array, two-dimensional array, | 
| 436 |     three-dimensional, cube map, cube map array, or two-dimensional multisample | 
| 437 |     array texture, it is possible to bind either the entire texture level or a | 
| 438 |     single layer or face of the texture level. This can be controlled with the | 
| 439 |     \l layered property. | 
| 440 |  | 
| 441 |     Support for QShaderImage is only supported with OpenGL 4 and partially with | 
| 442 |     OpenGL ES 3.1 and 3.2. | 
| 443 |  | 
| 444 |     OpenGL 4 supports the following image types: | 
| 445 |     \table | 
| 446 |     \header | 
| 447 |        \li GLSL Type | 
| 448 |        \li OpenGL Type Enum | 
| 449 |        \li Texture Type | 
| 450 |     \row | 
| 451 |        \li image1D | 
| 452 |        \li GL_IMAGE_1D | 
| 453 |        \li QTexture1D | 
| 454 |     \row | 
| 455 |        \li image2D | 
| 456 |        \li GL_IMAGE_2D | 
| 457 |        \li QTexture2D | 
| 458 |     \row | 
| 459 |        \li image3D | 
| 460 |        \li GL_IMAGE_3D | 
| 461 |        \li QTexture3D | 
| 462 |     \row | 
| 463 |        \li image2DRect | 
| 464 |        \li GL_IMAGE_2D_RECT | 
| 465 |        \li QTextureRectangle | 
| 466 |     \row | 
| 467 |        \li imageCube | 
| 468 |        \li GL_IMAGE_CUBE | 
| 469 |        \li QTextureCubeMap | 
| 470 |     \row | 
| 471 |        \li imageBuffer | 
| 472 |        \li GL_IMAGE_BUFFER | 
| 473 |        \li QTextureBuffer | 
| 474 |     \row | 
| 475 |        \li image1DArray | 
| 476 |        \li GL_IMAGE_1D_ARRAY | 
| 477 |        \li QTexture1DArray | 
| 478 |     \row | 
| 479 |        \li image2DArray | 
| 480 |        \li GL_IMAGE_2D_ARRAY | 
| 481 |        \li QTexture2DArray | 
| 482 |     \row | 
| 483 |        \li imageCubeArray | 
| 484 |        \li GL_IMAGE_CUBE_MAP_ARRAY | 
| 485 |        \li QTextureCubeMapArray | 
| 486 |     \row | 
| 487 |        \li image2DMS | 
| 488 |        \li GL_IMAGE_2D_MULTISAMPLE | 
| 489 |        \li QTexture2DMultisample | 
| 490 |     \row | 
| 491 |        \li image2DMSArray | 
| 492 |        \li GL_IMAGE_2D_MULTISAMPLE_ARRAY | 
| 493 |        \li QTexture2DMultisampleArray | 
| 494 |     \row | 
| 495 |        \li iimage1D | 
| 496 |        \li GL_INT_IMAGE_1D | 
| 497 |        \li QTexture1D | 
| 498 |     \row | 
| 499 |        \li iimage2D | 
| 500 |        \li GL_INT_IMAGE_2D | 
| 501 |        \li QTexture2D | 
| 502 |     \row | 
| 503 |        \li iimage3D | 
| 504 |        \li GL_INT_IMAGE_3D | 
| 505 |        \li QTexture3D | 
| 506 |     \row | 
| 507 |        \li iimage2DRect | 
| 508 |        \li GL_INT_IMAGE_2D_RECT | 
| 509 |        \li QTextureRectangle | 
| 510 |     \row | 
| 511 |        \li iimageCube | 
| 512 |        \li GL_INT_IMAGE_CUBE | 
| 513 |        \li QTextureCubeMap | 
| 514 |     \row | 
| 515 |        \li iimageBuffer | 
| 516 |        \li GL_INT_IMAGE_BUFFER | 
| 517 |        \li QTextureBuffer | 
| 518 |     \row | 
| 519 |        \li iimage1DArray | 
| 520 |        \li GL_INT_IMAGE_1D_ARRAY | 
| 521 |        \li QTexture1DArray | 
| 522 |     \row | 
| 523 |        \li iimage2DArray | 
| 524 |        \li GL_INT_IMAGE_2D_ARRAY | 
| 525 |        \li QTexture2DArray | 
| 526 |     \row | 
| 527 |        \li iimageCubeArray | 
| 528 |        \li GL_INT_IMAGE_CUBE_MAP_ARRAY | 
| 529 |        \li QTextureCubeMapArray | 
| 530 |     \row | 
| 531 |        \li iimage2DMS | 
| 532 |        \li GL_INT_IMAGE_2D_MULTISAMPLE | 
| 533 |        \li QTexture2DMultisample | 
| 534 |     \row | 
| 535 |        \li iimage2DMSArray | 
| 536 |        \li GL_INT_IMAGE_2D_MULTISAMPLE_ARRAY | 
| 537 |        \li QTexture2DMultisampleArray | 
| 538 |     \row | 
| 539 |        \li uimage1D | 
| 540 |        \li GL_UNSIGNED_INT_IMAGE_1D | 
| 541 |        \li QTexture1D | 
| 542 |     \row | 
| 543 |        \li uimage2D | 
| 544 |        \li GL_UNSIGNED_INT_IMAGE_2D | 
| 545 |        \li QTexture2D | 
| 546 |     \row | 
| 547 |        \li uimage3D | 
| 548 |        \li GL_UNSIGNED_INT_IMAGE_3D | 
| 549 |        \li QTexture3D | 
| 550 |     \row | 
| 551 |        \li uimage2DRect | 
| 552 |        \li GL_UNSIGNED_INT_IMAGE_2D_RECT | 
| 553 |        \li QTextureRectangle | 
| 554 |     \row | 
| 555 |        \li uimageCube | 
| 556 |        \li GL_UNSIGNED_INT_IMAGE_CUBE | 
| 557 |        \li QTextureCubeMap | 
| 558 |     \row | 
| 559 |        \li uimageBuffer | 
| 560 |        \li GL_UNSIGNED_INT_IMAGE_BUFFER | 
| 561 |        \li QTextureBuffer | 
| 562 |     \row | 
| 563 |        \li uimage1DArray | 
| 564 |        \li GL_UNSIGNED_INT_IMAGE_1D_ARRAY | 
| 565 |        \li QTexture1DArray | 
| 566 |     \row | 
| 567 |        \li uimage2DArray | 
| 568 |        \li GL_UNSIGNED_INT_IMAGE_2D_ARRAY | 
| 569 |        \li QTexture2DArray | 
| 570 |     \row | 
| 571 |        \li uimageCubeArray | 
| 572 |        \li GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY | 
| 573 |        \li QTextureCubeMapArray | 
| 574 |     \row | 
| 575 |        \li uimage2DMS | 
| 576 |        \li GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE | 
| 577 |        \li QTexture2DMultisample | 
| 578 |     \row | 
| 579 |        \li uimage2DMSArray | 
| 580 |        \li GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE_ARRAY | 
| 581 |        \li QTexture2DMultisampleArray | 
| 582 |     \endtable | 
| 583 |  | 
| 584 |     OpenGL ES 3.1 supports the following image types: | 
| 585 |     \table | 
| 586 |     \header | 
| 587 |        \li GLSL Type | 
| 588 |        \li OpenGL Type Enum | 
| 589 |        \li Texture Type | 
| 590 |     \row | 
| 591 |        \li image2D | 
| 592 |        \li GL_IMAGE_2D | 
| 593 |        \li QTexture2D | 
| 594 |     \row | 
| 595 |        \li image3D | 
| 596 |        \li GL_IMAGE_3D | 
| 597 |        \li QTexture3D | 
| 598 |     \row | 
| 599 |        \li imageCube | 
| 600 |        \li GL_IMAGE_CUBE | 
| 601 |        \li QTextureCubeMap | 
| 602 |     \row | 
| 603 |        \li image2DArray | 
| 604 |        \li GL_IMAGE_2D_ARRAY | 
| 605 |        \li QTexture2DArray | 
| 606 |     \row | 
| 607 |        \li iimage2D | 
| 608 |        \li GL_INT_IMAGE_2D | 
| 609 |        \li QTexture2D | 
| 610 |     \row | 
| 611 |        \li iimage3D | 
| 612 |        \li GL_INT_IMAGE_3D | 
| 613 |        \li QTexture3D | 
| 614 |     \row | 
| 615 |        \li iimageCube | 
| 616 |        \li GL_INT_IMAGE_CUBE | 
| 617 |        \li QTextureCubeMap | 
| 618 |     \row | 
| 619 |        \li iimage2DArray | 
| 620 |        \li GL_INT_IMAGE_2D_ARRAY | 
| 621 |        \li QTexture2DArray | 
| 622 |     \row | 
| 623 |        \li uimage2D | 
| 624 |        \li GL_UNSIGNED_INT_IMAGE_2D | 
| 625 |        \li QTexture2D | 
| 626 |     \row | 
| 627 |        \li uimage3D | 
| 628 |        \li GL_UNSIGNED_INT_IMAGE_3D | 
| 629 |        \li QTexture3D | 
| 630 |     \row | 
| 631 |        \li uimageCube | 
| 632 |        \li GL_UNSIGNED_INT_IMAGE_CUBE | 
| 633 |        \li QTextureCubeMap | 
| 634 |     \row | 
| 635 |        \li uimage2DArray | 
| 636 |        \li GL_UNSIGNED_INT_IMAGE_2D_ARRAY | 
| 637 |        \li QTexture2DArray | 
| 638 |     \endtable | 
| 639 |  | 
| 640 |     OpenGL ES 3.2 supports all of the OpenGL ES 3.1 image types as well as the | 
| 641 |     following: | 
| 642 |     \table | 
| 643 |     \header | 
| 644 |        \li GLSL Type | 
| 645 |        \li OpenGL Type Enum | 
| 646 |        \li Texture Type | 
| 647 |     \row | 
| 648 |        \li imageBuffer | 
| 649 |        \li GL_IMAGE_BUFFER | 
| 650 |        \li QTextureBuffer | 
| 651 |     \row | 
| 652 |        \li imageCubeArray | 
| 653 |        \li GL_IMAGE_CUBE_MAP_ARRAY | 
| 654 |        \li QTextureCubeMapArray | 
| 655 |     \row | 
| 656 |        \li iimageBuffer | 
| 657 |        \li GL_IMAGE_BUFFER | 
| 658 |        \li QTextureBuffer | 
| 659 |     \row | 
| 660 |        \li iimageCubeArray | 
| 661 |        \li GL_INT_IMAGE_CUBE_MAP_ARRAY | 
| 662 |        \li QTextureCubeMapArray | 
| 663 |     \row | 
| 664 |        \li uimageBuffer | 
| 665 |        \li GL_UNSIGNED_INT_IMAGE_BUFFER | 
| 666 |        \li QTextureBuffer | 
| 667 |     \row | 
| 668 |        \li uimageCubeArray | 
| 669 |        \li GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY | 
| 670 |        \li QTextureCubeMapArray | 
| 671 |     \endtable | 
| 672 |  | 
| 673 |     Expected use would look like: | 
| 674 |  | 
| 675 |     \badcode | 
| 676 |     Qt3DRender::QTexture2D *tex2D = new Qt3DRender::QTexture2D(); | 
| 677 |     ... | 
| 678 |     Qt3DRender::QMaterial *material = new Qt3DRender::QMaterial(); | 
| 679 |     ... | 
| 680 |     Qt3DRender::QParameter *imageParameter = new Qt3DRender::QParameter(); | 
| 681 |     Qt3DRender::QShaderImage *shaderImage = new Qt3DRender::QShaderImage(); | 
| 682 |  | 
| 683 |     shaderImage->setTexture(tex2D); | 
| 684 |  | 
| 685 |     imageParameter->setName("imageUniformName"); | 
| 686 |     imageParameter->setValue(QVariant::fromValue(shaderImage)); | 
| 687 |  | 
| 688 |     material->addParameter(imageParamenter); | 
| 689 |     \endcode | 
| 690 |  */ | 
| 691 |  | 
| 692 | /*! | 
| 693 |     \property Qt3DRender::QShaderImage::mipLevel | 
| 694 |  | 
| 695 |     Holds which mipLevel out of the referenced texture should be used for the | 
| 696 |     QShaderImage. | 
| 697 |  | 
| 698 |     The default value is 0. | 
| 699 | */ | 
| 700 |  | 
| 701 | /*! | 
| 702 |     \property Qt3DRender::QShaderImage::layer | 
| 703 |  | 
| 704 |     Holds which layer out of the referenced texture should be used for the | 
| 705 |     QShaderImage. This property does nothing if \a layered is set to true or if the | 
| 706 |     reference texture's type isn't compatible with layers. | 
| 707 |  | 
| 708 |     \note When the referenced texture is of type cube map or cube map array and | 
| 709 |     \a ĺayered is set to false, the face and layer are retrieved in the | 
| 710 |     following manner: | 
| 711 |     \badcode | 
| 712 |     cubeMapLayer = layer / 6 | 
| 713 |     cubeMapFace = layer - (cubeMapLayer * 6) | 
| 714 |     \endcode | 
| 715 |  | 
| 716 |     The default value is 0. | 
| 717 |  */ | 
| 718 |  | 
| 719 | /*! | 
| 720 |  * \property Qt3DRender::QShaderImage::layered | 
| 721 |  | 
| 722 |     If set to true, if the referenced texture is a one-dimensional array, | 
| 723 |     two-dimensional array, three-dimensional, cube map, cube map array, or | 
| 724 |     two-dimensional multisample array texture, the entire level will be bound | 
| 725 |     for all layers. If set to false, only the single layer specified by the \a | 
| 726 |     layer property will be bound. | 
| 727 |  | 
| 728 |     The default value is \c false. | 
| 729 |  */ | 
| 730 |  | 
| 731 | /*! | 
| 732 |     \property Qt3DRender::QShaderImage::access | 
| 733 |  | 
| 734 |     Specifies the type of access we want to allow from our shader instances to | 
| 735 |     the image. If a shader tries to write or read from an image that has | 
| 736 |     incompatible access, the behavior is undefined. | 
| 737 |  | 
| 738 |     The default value is QShaderImage::ReadWrite. | 
| 739 |  */ | 
| 740 |  | 
| 741 | /*! | 
| 742 |     \property Qt3DRender::QShaderImage::format | 
| 743 |  | 
| 744 |     Specifies the image format, which is essentially important when storing values | 
| 745 |     in the Image from a shader. | 
| 746 |  | 
| 747 |     The format doesn't have to be the same as the referenced texture's format. | 
| 748 |     It however has to be compatible (matching in size but not necessarily by | 
| 749 |     class type). For instance a texture of format R32F (size 32bits, class | 
| 750 |     1x32) could be used with an image of format RGBA8I (size 32bits, class | 
| 751 |     4x8). Table 8.27 of the | 
| 752 |     \l{https://www.khronos.org/registry/OpenGL/specs/gl/glspec45.core.pdf}{OpenGL specifications} | 
| 753 |     shows the size and class for all supported Image formats. | 
| 754 |  | 
| 755 |     By default Qt3D will try to set the image format to match that of the | 
| 756 |     referenced texture. | 
| 757 |  | 
| 758 |     The default value is QShaderImage::Automatic. | 
| 759 |  */ | 
| 760 |  | 
| 761 | /*! | 
| 762 |     \enum Qt3DRender::QShaderImage::Access | 
| 763 |  | 
| 764 |     \value ReadOnly | 
| 765 |            Image will only be read from in shaders | 
| 766 |     \value WriteOnly | 
| 767 |            Image will only be written into from shaders | 
| 768 |     \value ReadWrite | 
| 769 |            Image will only be read and written into from shaders | 
| 770 | */ | 
| 771 |  | 
| 772 | /*! | 
| 773 |     \enum Qt3DRender::QShaderImage::ImageFormat | 
| 774 |  | 
| 775 |     This list describes all possible image formats | 
| 776 |  | 
| 777 |     \value NoFormat | 
| 778 |           GL_NONE | 
| 779 |     \value Automatic | 
| 780 |           Qt 3D will try to determine the format automatically based on | 
| 781 |           the referenced texture. | 
| 782 |     \value R8_UNorm | 
| 783 |           GL_R8 (GLSL type r8, supported by OpenGL 4.2+) | 
| 784 |     \value RG8_UNorm | 
| 785 |           GL_RG8 (GLSL type rg8, supported by OpenGL 4.2+) | 
| 786 |     \value RGBA8_UNorm | 
| 787 |           GL_RGBA8 (GLSL type rgba8, supported by OpenGL 4.2+, OpenGL ES 3.1+) | 
| 788 |     \value R16_UNorm | 
| 789 |           GL_R16 (GLSL type r16, supported by OpenGL 4.2+) | 
| 790 |     \value RG16_UNorm | 
| 791 |           GL_RG16 (GLSL type rg16, supported by OpenGL 4.2+) | 
| 792 |     \value RGBA16_UNorm | 
| 793 |           GL_RGBA16 (GLSL type rgba16, supported by OpenGL 4.2+) | 
| 794 |     \value R8_SNorm | 
| 795 |           GL_R8_SNORM (GLSL type r8_snorm, supported by OpenGL 4.2+) | 
| 796 |     \value RG8_SNorm | 
| 797 |           GL_RG8_SNORM (GLSL type rg8_snorm, supported by OpenGL 4.2+) | 
| 798 |     \value RGBA8_SNorm | 
| 799 |           GL_RGBA8_SNORM (GLSL type rgba8_snorm, supported by OpenGL 4.2+, OpenGL ES 3.1+) | 
| 800 |     \value R16_SNorm | 
| 801 |           GL_R16_SNORM (GLSL type r16_snorm, supported by OpenGL 4.2+) | 
| 802 |     \value RG16_SNorm | 
| 803 |           GL_RG16_SNORM (GLSL type rg16_snorm, supported by OpenGL 4.2+) | 
| 804 |     \value RGBA16_SNorm | 
| 805 |           GL_RGBA16_SNORM (GLSL type rgba16_snorm, supported by OpenGL 4.2+) | 
| 806 |     \value R8U | 
| 807 |           GL_R8UI (GLSL type r8ui, supported by OpenGL 4.2+) | 
| 808 |     \value RG8U | 
| 809 |           GL_RG8UI (GLSL type rg8ui, supported by OpenGL 4.2+) | 
| 810 |     \value RGBA8U | 
| 811 |           GL_RGBA8UI (GLSL type rgba8ui, supported by OpenGL 4.2+, OpenGL ES 3.1+) | 
| 812 |     \value R16U | 
| 813 |           GL_R16UI (GLSL type r16ui, supported by OpenGL 4.2+) | 
| 814 |     \value RG16U | 
| 815 |           GL_RG16UI (GLSL type rg16ui, supported by OpenGL 4.2+) | 
| 816 |     \value RGBA16U | 
| 817 |           GL_RGBA16UI (GLSL type rgba16ui, supported by OpenGL 4.2+, OpenGL ES 3.1+) | 
| 818 |     \value R32U | 
| 819 |           GL_R32UI (GLSL type r32ui, supported by OpenGL 4.2+, OpenGL ES 3.1) | 
| 820 |     \value RG32U | 
| 821 |           GL_RG32UI (GLSL type rg32ui, supported by OpenGL 4.2+) | 
| 822 |     \value RGBA32U | 
| 823 |           GL_RGBA32UI (GLSL type rgba32ui, supported by OpenGL 4.2+, OpenGL ES 3.1+) | 
| 824 |     \value R8I | 
| 825 |           GL_R8I (GLSL type r8i, supported by OpenGL 4.2+) | 
| 826 |     \value RG8I | 
| 827 |           GL_RG8I (GLSL type rg8i, supported by OpenGL 4.2+) | 
| 828 |     \value RGBA8I | 
| 829 |           GL_RGBA8I (GLSL type rgba8i, supported by OpenGL 4.2+, OpenGL ES 3.1+) | 
| 830 |     \value R16I | 
| 831 |           GL_R16I (GLSL type r16i, supported by OpenGL 4.2+) | 
| 832 |     \value RG16I | 
| 833 |           GL_RG16I (GLSL type rg16i, supported by OpenGL 4.2+) | 
| 834 |     \value RGBA16I | 
| 835 |           GL_RGBA16I (GLSL type rgba16i, supported by OpenGL 4.2+, OpenGL ES 3.1) | 
| 836 |     \value R32I | 
| 837 |           GL_R32I (GLSL type r32i, supported by OpenGL 4.2+, OpenGL ES 3.1+) | 
| 838 |     \value RG32I | 
| 839 |           GL_RG32I (GLSL type rg32i, supported by OpenGL 4.2+) | 
| 840 |     \value RGBA32I | 
| 841 |           GL_RGBA32I (GLSL type rgba32i, supported by OpenGL 4.2+, OpenGL ES 3.1+) | 
| 842 |     \value R16F | 
| 843 |           GL_R16F (GLSL type r16f, supported by OpenGL 4.2+) | 
| 844 |     \value RG16F | 
| 845 |           GL_RG16F (GLSL type rg16f, supported by OpenGL 4.2+) | 
| 846 |     \value RGBA16F | 
| 847 |           GL_RGBA16F (GLSL type rgba16f, supported by OpenGL 4.2+, OpenGL ES 3.1+) | 
| 848 |     \value R32F | 
| 849 |           GL_R32F (GLSL type r32f, supported by OpenGL 4.2+, OpenGL ES 3.1+) | 
| 850 |     \value RG32F | 
| 851 |           GL_RG32F (GLSL type rg32f, supported by OpenGL 4.2+) | 
| 852 |     \value RGBA32F | 
| 853 |           GL_RGBA32F (GLSL type rgba32f, supported by OpenGL 4.2+, OpenGL ES 3.1+) | 
| 854 |     \value RG11B10F | 
| 855 |           GL_R11F_G11F_B10F (GLSL type r11f_g11f_b10f, supported by OpenGL 4.2+) | 
| 856 |     \value RGB10A2 | 
| 857 |           GL_RGB10_A2 (GLSL type rgb10_a2, supported by OpenGL 4.2+) | 
| 858 |     \value RGB10A2U | 
| 859 |           GL_RGB10_A2UI (GLSL type rgb10_a2ui, supported by OpenGL 4.2+) | 
| 860 | */ | 
| 861 |  | 
| 862 |  | 
| 863 | QShaderImage::QShaderImage(Qt3DCore::QNode *parent) | 
| 864 |     : Qt3DCore::QNode(*new QShaderImagePrivate, parent) | 
| 865 | { | 
| 866 | } | 
| 867 |  | 
| 868 | QShaderImage::~QShaderImage() | 
| 869 | { | 
| 870 |  | 
| 871 | } | 
| 872 |  | 
| 873 | QAbstractTexture *QShaderImage::texture() const | 
| 874 | { | 
| 875 |     Q_D(const QShaderImage); | 
| 876 |     return d->m_texture; | 
| 877 | } | 
| 878 |  | 
| 879 | bool QShaderImage::layered() const | 
| 880 | { | 
| 881 |     Q_D(const QShaderImage); | 
| 882 |     return d->m_layered; | 
| 883 | } | 
| 884 |  | 
| 885 | int QShaderImage::mipLevel() const | 
| 886 | { | 
| 887 |     Q_D(const QShaderImage); | 
| 888 |     return d->m_mipLevel; | 
| 889 | } | 
| 890 |  | 
| 891 | int QShaderImage::layer() const | 
| 892 | { | 
| 893 |     Q_D(const QShaderImage); | 
| 894 |     return d->m_layer; | 
| 895 | } | 
| 896 |  | 
| 897 | QShaderImage::Access QShaderImage::access() const | 
| 898 | { | 
| 899 |     Q_D(const QShaderImage); | 
| 900 |     return d->m_access; | 
| 901 | } | 
| 902 |  | 
| 903 | QShaderImage::ImageFormat QShaderImage::format() const | 
| 904 | { | 
| 905 |     Q_D(const QShaderImage); | 
| 906 |     return d->m_format; | 
| 907 | } | 
| 908 |  | 
| 909 | void QShaderImage::setTexture(QAbstractTexture *texture) | 
| 910 | { | 
| 911 |     Q_D(QShaderImage); | 
| 912 |     if (texture == d->m_texture) | 
| 913 |         return; | 
| 914 |  | 
| 915 |     if (d->m_texture) | 
| 916 |         d->unregisterDestructionHelper(node: d->m_texture); | 
| 917 |  | 
| 918 |     if (texture && !texture->parent()) | 
| 919 |         texture->setParent(this); | 
| 920 |  | 
| 921 |     d->m_texture = texture; | 
| 922 |  | 
| 923 |     if (d->m_texture) | 
| 924 |         d->registerDestructionHelper(node: d->m_texture, func: &QShaderImage::setTexture, d->m_texture); | 
| 925 |  | 
| 926 |     Q_EMIT textureChanged(texture); | 
| 927 | } | 
| 928 |  | 
| 929 | void QShaderImage::setLayered(bool layered) | 
| 930 | { | 
| 931 |     Q_D(QShaderImage); | 
| 932 |     if (layered == d->m_layered) | 
| 933 |         return; | 
| 934 |     d->m_layered = layered; | 
| 935 |     Q_EMIT layeredChanged(layered); | 
| 936 | } | 
| 937 |  | 
| 938 | void QShaderImage::setMipLevel(int mipLevel) | 
| 939 | { | 
| 940 |     Q_D(QShaderImage); | 
| 941 |     if (mipLevel == d->m_mipLevel) | 
| 942 |         return; | 
| 943 |     d->m_mipLevel = mipLevel; | 
| 944 |     Q_EMIT mipLevelChanged(mipLevel); | 
| 945 | } | 
| 946 |  | 
| 947 | void QShaderImage::setLayer(int layer) | 
| 948 | { | 
| 949 |     Q_D(QShaderImage); | 
| 950 |     if (layer == d->m_layer) | 
| 951 |         return; | 
| 952 |     d->m_layer = layer; | 
| 953 |     Q_EMIT layerChanged(layer); | 
| 954 | } | 
| 955 |  | 
| 956 | void QShaderImage::setAccess(QShaderImage::Access access) | 
| 957 | { | 
| 958 |     Q_D(QShaderImage); | 
| 959 |     if (access == d->m_access) | 
| 960 |         return; | 
| 961 |     d->m_access = access; | 
| 962 |     Q_EMIT accessChanged(access); | 
| 963 | } | 
| 964 |  | 
| 965 | void QShaderImage::setFormat(QShaderImage::ImageFormat format) | 
| 966 | { | 
| 967 |     Q_D(QShaderImage); | 
| 968 |     if (format == d->m_format) | 
| 969 |         return; | 
| 970 |     d->m_format = format; | 
| 971 |     Q_EMIT formatChanged(format); | 
| 972 | } | 
| 973 |  | 
| 974 | Qt3DCore::QNodeCreatedChangeBasePtr Qt3DRender::QShaderImage::createNodeCreationChange() const | 
| 975 | { | 
| 976 |     auto creationChange = Qt3DCore::QNodeCreatedChangePtr<QShaderImageData>::create(arguments: this); | 
| 977 |     QShaderImageData &data = creationChange->data; | 
| 978 |     Q_D(const QShaderImage); | 
| 979 |     data.textureId = Qt3DCore::qIdForNode(node: d->m_texture); | 
| 980 |     data.layer = d->m_layer; | 
| 981 |     data.mipLevel = d->m_mipLevel; | 
| 982 |     data.access = d->m_access; | 
| 983 |     data.format = d->m_format; | 
| 984 |     data.layered = d->m_layered; | 
| 985 |     return creationChange; | 
| 986 |  | 
| 987 | } | 
| 988 |  | 
| 989 | } // namespace Qt3DRender | 
| 990 |  | 
| 991 | QT_END_NAMESPACE | 
| 992 |  |