Change Details

This part of the design will go over the changes I want to approach to improve the draw manager task scheduler. The design is based on {D7578}. In order to create the MeshRenderData in a task we need to split `mesh_render_data_create` in two phases. First phase will not happen in the callers thread and is responsible to create the `MeshRenderData` instance and fill it with the statistics of the mesh. These statistics are used to define how the scheduling would take place. The second phase would do the heavier lifting and would happen in a separate `TaskNode` (`task_node_mesh_render_data`). There will be several additional task_nodes. 1. a task_node that handles all `Single threaded extraction` in a single task. we can tweak afterwards if we need to split this into multiple tasks. 2. a task_node that handles a single task. `One task for the whole VBO.` 3. a task_node for range tasks MR_ITER_LOOPTRI, MR_ITER_LOOP, MR_ITER_LEDGE, MR_ITER_LVERT. The `extract_lines_loose` should be removed and we based on the existance of `ibo.lines` we should do it in the finalize of the `extract_lines` or as part of the Single threaded extraction when the lines were already up to date. As we only need to call `extract_lines_loose_finish` directly. The `TaskGraph` will be instantiated in the `draw_manager.c` `Main Draw Loops` And stored in the DrawContext. We need to do this to keep the hacky-optimization that generates the batches during the free-ing of the `ghash` in `drw_duplidata_free`.

This part of the design will go over the changes for improving the draw manager threading. The design is based on {D7578}. In order to create the MeshRenderData in a task we need to split `mesh_render_data_create` in two phases. First phase will not happen in the callers thread and is responsible to create the `MeshRenderData` instance and fill it with the statistics of the mesh. These statistics are used to define how the scheduling would take place. The second phase would do the heavier lifting and would happen in a separate `TaskNode` (`task_node_mesh_render_data`). There will be several additional task_nodes. 1. a task_node that handles all `Single threaded extraction` in a single task. we can tweak afterwards if we need to split this into multiple tasks. 2. a task_node that handles a single task. `One task for the whole VBO.` 3. a task_node for range tasks MR_ITER_LOOPTRI, MR_ITER_LOOP, MR_ITER_LEDGE, MR_ITER_LVERT. The `extract_lines_loose` should be removed and we based on the existance of `ibo.lines` we should do it in the finalize of the `extract_lines` or as part of the Single threaded extraction when the lines were already up to date. As we only need to call `extract_lines_loose_finish` directly. The `TaskGraph` will be instantiated in the `draw_manager.c` `Main Draw Loops` And stored in the DrawContext. We need to do this to keep the hacky-optimization that generates the batches during the free-ing of the `ghash` in `drw_duplidata_free`.

This part of the design will go over the changes I want to approach tofor improveing the draw manager task schedulerhreading. The design is based on {D7578}. In order to create the MeshRenderData in a task we need to split `mesh_render_data_create` in two phases. First phase will not happen in the callers thread and is responsible to create the `MeshRenderData` instance and fill it with the statistics of the mesh. These statistics are used to define how the scheduling would take place. The second phase would do the heavier lifting and would happen in a separate `TaskNode` (`task_node_mesh_render_data`). There will be several additional task_nodes. 1. a task_node that handles all `Single threaded extraction` in a single task. we can tweak afterwards if we need to split this into multiple tasks. 2. a task_node that handles a single task. `One task for the whole VBO.` 3. a task_node for range tasks MR_ITER_LOOPTRI, MR_ITER_LOOP, MR_ITER_LEDGE, MR_ITER_LVERT. The `extract_lines_loose` should be removed and we based on the existance of `ibo.lines` we should do it in the finalize of the `extract_lines` or as part of the Single threaded extraction when the lines were already up to date. As we only need to call `extract_lines_loose_finish` directly. The `TaskGraph` will be instantiated in the `draw_manager.c` `Main Draw Loops` And stored in the DrawContext. We need to do this to keep the hacky-optimization that generates the batches during the free-ing of the `ghash` in `drw_duplidata_free`.