34f94a02f3
Rendering directly to a resource using OpenGL interop and Hgi doesn't work in Houdini, since it never uses the resulting resource (it does not call `HdRenderBuffer::GetResource`). But since doing that simultaneously disables mapping (`HdRenderBuffer::Map` is not implemented then), nothing was displayed. To fix this, keep track of whether a Hydra viewport does support displaying a Hgi resource directly, by checking whether `HdRenderBuffer::GetResource` is ever called and only enable use of OpenGL interop if that is the case. Differential Revision: https://developer.blender.org/D15090
66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
/* SPDX-License-Identifier: Apache-2.0
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* Copyright 2022 NVIDIA Corporation
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* Copyright 2022 Blender Foundation */
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#pragma once
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#include "hydra/config.h"
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#include "session/display_driver.h"
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#include "util/thread.h"
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#include <pxr/imaging/hgi/hgi.h>
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#include <pxr/imaging/hgi/texture.h>
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HDCYCLES_NAMESPACE_OPEN_SCOPE
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class HdCyclesDisplayDriver final : public CCL_NS::DisplayDriver {
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public:
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HdCyclesDisplayDriver(HdCyclesSession *renderParam, Hgi *hgi);
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~HdCyclesDisplayDriver();
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private:
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void next_tile_begin() override;
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bool update_begin(const Params ¶ms, int texture_width, int texture_height) override;
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void update_end() override;
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void flush() override;
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CCL_NS::half4 *map_texture_buffer() override;
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void unmap_texture_buffer() override;
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GraphicsInterop graphics_interop_get() override;
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void graphics_interop_activate() override;
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void graphics_interop_deactivate() override;
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void clear() override;
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void draw(const Params ¶ms) override;
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void gl_context_create();
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bool gl_context_enable();
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void gl_context_disable();
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void gl_context_dispose();
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HdCyclesSession *const _renderParam;
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Hgi *const _hgi;
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#ifdef _WIN32
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void *hdc_ = nullptr;
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void *gl_context_ = nullptr;
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#endif
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CCL_NS::thread_mutex mutex_;
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PXR_NS::HgiTextureHandle texture_;
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unsigned int gl_pbo_id_ = 0;
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CCL_NS::int2 pbo_size_ = CCL_NS::make_int2(0, 0);
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bool need_update_ = false;
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std::atomic_bool need_clear_ = false;
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void *gl_render_sync_ = nullptr;
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void *gl_upload_sync_ = nullptr;
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};
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HDCYCLES_NAMESPACE_CLOSE_SCOPE
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