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renderTask.h
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2 // Copyright 2016 Pixar
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24 #ifndef HDX_RENDER_TASK_H
25 #define HDX_RENDER_TASK_H
26 
27 #include "pxr/pxr.h"
28 #include "pxr/imaging/hdx/api.h"
29 #include "pxr/imaging/hdx/version.h"
30 #include "pxr/imaging/hdx/progressiveTask.h"
31 #include "pxr/imaging/hdx/renderSetupTask.h" // for short-term compatibility.
32 #include "pxr/imaging/hdSt/renderPassState.h"
33 
34 #include <boost/shared_ptr.hpp>
35 
36 PXR_NAMESPACE_OPEN_SCOPE
37 
38 
39 class HdSceneDelegate;
40 
41 typedef boost::shared_ptr<class HdRenderPassState> HdRenderPassStateSharedPtr;
42 typedef boost::shared_ptr<class HdRenderPass> HdRenderPassSharedPtr;
43 typedef boost::shared_ptr<class HdxRenderSetupTask> HdxRenderSetupTaskSharedPtr;
44 
65 {
66 public:
67  HDX_API
68  HdxRenderTask(HdSceneDelegate* delegate, SdfPath const& id);
69 
70  HDX_API
71  virtual ~HdxRenderTask();
72 
74  virtual bool IsConverged() const override;
75 
77  HDX_API
78  virtual void Sync(HdSceneDelegate* delegate,
79  HdTaskContext* ctx,
80  HdDirtyBits* dirtyBits) override;
81 
83  HDX_API
84  virtual void Prepare(HdTaskContext* ctx,
85  HdRenderIndex* renderIndex) override;
86 
88  HDX_API
89  virtual void Execute(HdTaskContext* ctx) override;
90 
92  HDX_API
93  virtual const TfTokenVector &GetRenderTags() const override;
94 
95 protected:
96  HDX_API
97  HdRenderPassStateSharedPtr _GetRenderPassState(HdTaskContext *ctx) const;
98 
99  // Returns the number of draw items used for rendering. This will only
100  // return the correct result after HdxRenderTask::Prepare() has been called.
101  HDX_API
102  size_t _GetDrawItemCount() const;
103 
104 private:
105  HdRenderPassSharedPtr _pass;
106  TfTokenVector _renderTags;
107 
108  // Optional internal render setup task, for params unpacking.
109  HdxRenderSetupTaskSharedPtr _setupTask;
110 
111  // Setup additional state that HdStRenderPassState requires.
112  // XXX: This should be moved to hdSt!
113  void _SetHdStRenderPassState(HdTaskContext *ctx,
114  HdStRenderPassState *renderPassState);
115 
116  HdxRenderTask() = delete;
117  HdxRenderTask(const HdxRenderTask &) = delete;
118  HdxRenderTask &operator =(const HdxRenderTask &) = delete;
119 };
120 
121 
122 PXR_NAMESPACE_CLOSE_SCOPE
123 
124 #endif //HDX_RENDER_TASK_H
The Hydra render index is a flattened representation of the client scene graph, which may be composed...
Definition: renderIndex.h:119
A task for rendering geometry to pixels.
Definition: renderTask.h:64
virtual bool IsConverged() const override
Hooks for progressive rendering (delegated to renderpasses).
This is an interface class that declares that derived tasks implement some form of progressive render...
A set of rendering parameters used among render passes.
virtual HDX_API void Prepare(HdTaskContext *ctx, HdRenderIndex *renderIndex) override
Prepare the tasks resources.
virtual HDX_API const TfTokenVector & GetRenderTags() const override
Collect Render Tags used by the task.
Adapter class providing data exchange with the client scene graph.
std::vector< TfToken > TfTokenVector
Convenience types.
Definition: token.h:438
A path value used to locate objects in layers or scenegraphs.
Definition: path.h:287
virtual HDX_API void Sync(HdSceneDelegate *delegate, HdTaskContext *ctx, HdDirtyBits *dirtyBits) override
Sync the render pass resources.
virtual HDX_API void Execute(HdTaskContext *ctx) override
Execute render pass task.