04bb5f9995
Hydra is a rendering architecture part of USD, designed to abstract the host application from the renderer. A renderer implementing a Hydra render delegate can run in any host application supporting Hydra, which now includes Blender. For external renderers this means less code to be written, and improved performance due to a using a C++ API instead of a Python API. Add-ons need to subclass bpy.types.HydraRenderEngine. See the example in the Python API docs for details. An add-on for Hydra Storm will be included as well. This is USD's rasterizing renderer, used in other applications like usdview. For users it can provide a preview of USD file export, and for developers it serves a reference. There are still limitations and missing features, especially around materials. The remaining to do items are tracked in #110765. This feature was contributed by AMD. Ref #110765 Co-authored-by: Georgiy Markelov <georgiy.m.markelov@gmail.com> Co-authored-by: Vasyl-Pidhirskyi <vpidhirskyi@gmail.com> Co-authored-by: Brian Savery <brian.savery@gmail.com> Co-authored-by: Brecht Van Lommel <brecht@blender.org> Pull Request: https://projects.blender.org/blender/blender/pulls/104712
70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* SPDX-FileCopyrightText: 2011-2022 Blender Foundation */
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#pragma once
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#include <memory>
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#include <string>
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#include <pxr/imaging/hd/driver.h>
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#include <pxr/imaging/hd/engine.h>
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#include <pxr/imaging/hd/pluginRenderDelegateUniqueHandle.h>
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#include <pxr/imaging/hdx/freeCameraSceneDelegate.h>
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#include <pxr/imaging/hgi/hgi.h>
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#include <pxr/usd/usd/stage.h>
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#include <pxr/usdImaging/usdImaging/delegate.h>
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#include "hydra/hydra_scene_delegate.h"
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#include "hydra/settings.h"
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#include "light_tasks_delegate.h"
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#include "render_task_delegate.h"
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struct bContext;
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struct RenderEngine;
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struct CLG_LogRef;
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namespace blender::render::hydra {
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extern struct CLG_LogRef *LOG_HYDRA_RENDER;
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class Engine {
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protected:
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std::string render_delegate_name_;
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RenderEngine *bl_engine_ = nullptr;
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Depsgraph *depsgraph_ = nullptr;
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bContext *context_ = nullptr;
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Scene *scene_ = nullptr;
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/* The order is important due to deletion order */
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pxr::HgiUniquePtr hgi_;
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pxr::HdDriver hgi_driver_;
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pxr::HdPluginRenderDelegateUniqueHandle render_delegate_;
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std::unique_ptr<pxr::HdRenderIndex> render_index_;
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std::unique_ptr<io::hydra::HydraSceneDelegate> hydra_scene_delegate_;
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std::unique_ptr<RenderTaskDelegate> render_task_delegate_;
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std::unique_ptr<pxr::HdxFreeCameraSceneDelegate> free_camera_delegate_;
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std::unique_ptr<LightTasksDelegate> light_tasks_delegate_;
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std::unique_ptr<pxr::HdEngine> engine_;
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public:
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Engine(RenderEngine *bl_engine, const std::string &render_delegate_name);
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virtual ~Engine() = default;
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void sync(Depsgraph *depsgraph, bContext *context);
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virtual void render() = 0;
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virtual void set_render_setting(const std::string &key, const pxr::VtValue &val);
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protected:
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float renderer_percent_done();
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pxr::HdTaskSharedPtrVector tasks();
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virtual void notify_status(float progress,
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const std::string &title,
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const std::string &info) = 0;
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};
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} // namespace blender::render::hydra
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