Add Chromium-only Blender WebEngine parity work

blender-5.2.0/intern/cycles/hydra/display_driver.h

@@ -0,0 +1,70 @@
+/* SPDX-FileCopyrightText: 2022 NVIDIA Corporation
+ * SPDX-FileCopyrightText: 2022 Blender Foundation
+ *
+ * SPDX-License-Identifier: Apache-2.0 */
+
+#pragma once
+
+#include "hydra/config.h"
+#include "session/display_driver.h"
+#include "util/thread.h"
+
+#include <pxr/imaging/hgi/hgi.h>
+#include <pxr/imaging/hgi/texture.h>
+
+HDCYCLES_NAMESPACE_OPEN_SCOPE
+
+class HdCyclesDisplayDriver final : public CCL_NS::DisplayDriver {
+ public:
+  HdCyclesDisplayDriver(HdCyclesSession *renderParam, Hgi *hgi);
+  ~HdCyclesDisplayDriver() override;
+
+ private:
+  void next_tile_begin() override;
+
+  bool update_begin(const Params &params,
+                    const int texture_width,
+                    const int texture_height) override;
+  void update_end() override;
+
+  void flush() override;
+
+  CCL_NS::half4 *map_texture_buffer() override;
+  void unmap_texture_buffer() override;
+
+  GraphicsInteropDevice graphics_interop_get_device() override;
+  void graphics_interop_update_buffer() override;
+
+  void graphics_interop_activate() override;
+  void graphics_interop_deactivate() override;
+
+  void zero() override;
+
+  void draw(const Params &params) override;
+
+  void gl_context_create();
+  bool gl_context_enable();
+  void gl_context_disable();
+  void gl_context_dispose();
+
+  HdCyclesSession *const _renderParam;
+  Hgi *const _hgi;
+
+#ifdef _WIN32
+  void *hdc_ = nullptr;
+  void *gl_context_ = nullptr;
+#endif
+  CCL_NS::thread_mutex mutex_;
+
+  PXR_NS::HgiTextureHandle texture_;
+  unsigned int gl_pbo_id_ = 0;
+  CCL_NS::int2 pbo_size_ = CCL_NS::make_int2(0, 0);
+  bool need_update_ = false;
+  std::atomic_bool need_zero_ = false;
+  std::atomic_bool need_recreate_interop_ = false;
+
+  void *gl_render_sync_ = nullptr;
+  void *gl_upload_sync_ = nullptr;
+};
+
+HDCYCLES_NAMESPACE_CLOSE_SCOPE