renderPass.h

//
// Copyright 2016 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
#ifndef PXR_IMAGING_PLUGIN_HD_EMBREE_RENDER_PASS_H
#define PXR_IMAGING_PLUGIN_HD_EMBREE_RENDER_PASS_H
 
#include "pxr/pxr.h"
 
#include "pxr/imaging/hd/aov.h"
#include "pxr/imaging/hd/renderPass.h"
#include "pxr/imaging/hd/renderThread.h"
#include "pxr/imaging/plugin/hdEmbree/renderer.h"
#include "pxr/imaging/plugin/hdEmbree/renderBuffer.h"
 
#include "pxr/base/gf/matrix4d.h"
#include "pxr/base/gf/rect2i.h"
 
#include <atomic>
 
PXR_NAMESPACE_OPEN_SCOPE
 
class HdEmbreeRenderPass final : public HdRenderPass
{
public:
    HdEmbreeRenderPass(HdRenderIndex *index,
                       HdRprimCollection const &collection,
                       HdRenderThread *renderThread,
                       HdEmbreeRenderer *renderer,
                       std::atomic<int> *sceneVersion);
 
    ~HdEmbreeRenderPass() override;
 
    // -----------------------------------------------------------------------
    // HdRenderPass API
 
    bool IsConverged() const override;
 
protected:
 
    // -----------------------------------------------------------------------
    // HdRenderPass API
 
    void _Execute(HdRenderPassStateSharedPtr const& renderPassState,
                  TfTokenVector const &renderTags) override;
 
    void _MarkCollectionDirty() override {}
 
private:
    // A handle to the render thread.
    HdRenderThread *_renderThread;
 
    // A handle to the global renderer.
    HdEmbreeRenderer *_renderer;
 
    // A reference to the global scene version.
    std::atomic<int> *_sceneVersion;
 
    // The last scene version we rendered with.
    int _lastSceneVersion;
 
    // The last settings version we rendered with.
    int _lastSettingsVersion;
 
    // The pixels written to. Like viewport in OpenGL,
    // but coordinates are y-Down.
    GfRect2i _dataWindow;
 
    // The view matrix: world space to camera space
    GfMatrix4d _viewMatrix;
    // The projection matrix: camera space to NDC space (with
    // respect to the data window).
    GfMatrix4d _projMatrix;
 
    // The list of aov buffers this renderpass should write to.
    HdRenderPassAovBindingVector _aovBindings;
 
    // If no attachments are provided, provide an anonymous renderbuffer for
    // color and depth output.
    HdEmbreeRenderBuffer _colorBuffer;
    HdEmbreeRenderBuffer _depthBuffer;
 
    // Were the color/depth buffer converged the last time we blitted them?
    bool _converged;
};
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif // PXR_IMAGING_PLUGIN_HD_EMBREE_RENDER_PASS_H