1 // 2 // Copyright 2019 Pixar 3 // 4 // Licensed under the Apache License, Version 2.0 (the "Apache License") 5 // with the following modification; you may not use this file except in 6 // compliance with the Apache License and the following modification to it: 7 // Section 6. Trademarks. is deleted and replaced with: 8 // 9 // 6. Trademarks. This License does not grant permission to use the trade 10 // names, trademarks, service marks, or product names of the Licensor 11 // and its affiliates, except as required to comply with Section 4(c) of 12 // the License and to reproduce the content of the NOTICE file. 13 // 14 // You may obtain a copy of the Apache License at 15 // 16 // http://www.apache.org/licenses/LICENSE-2.0 17 // 18 // Unless required by applicable law or agreed to in writing, software 19 // distributed under the Apache License with the above modification is 20 // distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 21 // KIND, either express or implied. See the Apache License for the specific 22 // language governing permissions and limitations under the Apache License. 23 // 24 #ifndef PXR_IMAGING_HD_ST_VOLUME_H 25 #define PXR_IMAGING_HD_ST_VOLUME_H 26 27 #include "pxr/pxr.h" 28 #include "pxr/imaging/hdSt/api.h" 29 #include "pxr/imaging/hd/version.h" 30 #include "pxr/imaging/hd/volume.h" 31 32 PXR_NAMESPACE_OPEN_SCOPE 33 34 class HdStDrawItem; 35 36 /// Represents a Volume Prim. 37 /// 38 class HdStVolume final : public HdVolume { 39 public: 40 HDST_API 41 HdStVolume(SdfPath const& id); 42 HDST_API 43 ~HdStVolume() override; 44 45 HDST_API 46 HdDirtyBits GetInitialDirtyBitsMask() const override; 47 48 HDST_API 49 void Sync(HdSceneDelegate* delegate, 50 HdRenderParam* renderParam, 51 HdDirtyBits* dirtyBits, 52 TfToken const &reprToken) override; 53 54 HDST_API 55 void Finalize(HdRenderParam *renderParam) override; 56 57 /// Default step size used for raymarching 58 static const float defaultStepSize; 59 60 /// Default step size used for raymarching for lighting computation 61 static const float defaultStepSizeLighting; 62 63 /// Default memory limit for a field texture (in Mb) if not 64 /// overridden by field prim with textureMemory. 65 static const float defaultMaxTextureMemoryPerField; 66 67 protected: 68 void _InitRepr(TfToken const &reprToken, 69 HdDirtyBits* dirtyBits) override; 70 71 HdDirtyBits _PropagateDirtyBits(HdDirtyBits bits) const override; 72 73 void _UpdateRepr(HdSceneDelegate *sceneDelegate, 74 HdRenderParam *renderParam, 75 TfToken const &reprToken, 76 HdDirtyBits *dirtyBitsState); 77 78 private: 79 void _UpdateDrawItem(HdSceneDelegate *sceneDelegate, 80 HdRenderParam *renderParam, 81 HdStDrawItem *drawItem, 82 HdDirtyBits *dirtyBits); 83 84 HdReprSharedPtr _volumeRepr; 85 }; 86 87 PXR_NAMESPACE_CLOSE_SCOPE 88 89 #endif //PXR_IMAGING_HD_ST_VOLUME_H 90