86 lines
3.0 KiB
C++
86 lines
3.0 KiB
C++
/* SPDX-FileCopyrightText: 2016 by Mike Erwin. All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup gpu
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*
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* This interface allow GPU to manage VAOs for multiple context and threads.
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*/
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#pragma once
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#include "GPU_batch.hh"
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#include "GPU_common.hh"
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#include "GPU_platform.hh"
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/* GPU back-ends abstract the differences between different APIs. #GPU_context_create
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* automatically initializes the back-end, and #GPU_context_discard frees it when there
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* are no more contexts. */
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bool GPU_backend_supported();
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void GPU_backend_type_selection_set(const eGPUBackendType backend);
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eGPUBackendType GPU_backend_type_selection_get();
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eGPUBackendType GPU_backend_get_type();
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/**
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* Detect the most suited eGPUBackendType.
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*
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* - The detected backend will be set in `GPU_backend_type_selection_set`.
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* - When GPU_backend_type_selection_is_overridden it checks the overridden backend.
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* When not overridden it checks a default list.
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* - OpenGL backend will be checked as fallback for Metal.
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*
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* Returns true when detection found a supported backend, otherwise returns false.
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* When no supported backend is found GPU_backend_type_selection_set is called with
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* GPU_BACKEND_NONE.
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*/
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bool GPU_backend_type_selection_detect();
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/**
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* Alter the GPU_backend_type_selection_detect to only test a specific backend
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*/
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void GPU_backend_type_selection_set_override(eGPUBackendType backend_type);
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/**
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* Check if the GPU_backend_type_selection_detect is overridden to only test a specific backend.
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*/
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bool GPU_backend_type_selection_is_overridden();
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/** Opaque type hiding blender::gpu::Context. */
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struct GPUContext;
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GPUContext *GPU_context_create(void *ghost_window, void *ghost_context);
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/**
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* To be called after #GPU_context_active_set(ctx_to_destroy).
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*/
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void GPU_context_discard(GPUContext *);
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/**
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* #GPUContext can be null.
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*/
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void GPU_context_active_set(GPUContext *);
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GPUContext *GPU_context_active_get();
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/* Begin and end frame are used to mark the singular boundary representing the lifetime of a whole
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* frame. This also acts as a divisor for ensuring workload submission and flushing, especially for
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* background rendering when there is no call to present.
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* This is required by explicit-API's where there is no implicit workload flushing. */
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void GPU_context_begin_frame(GPUContext *ctx);
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void GPU_context_end_frame(GPUContext *ctx);
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/* Legacy GPU (Intel HD4000 series) do not support sharing GPU objects between GPU
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* contexts. EEVEE/Workbench can create different contexts for image/preview rendering, baking or
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* compiling. When a legacy GPU is detected (`GPU_use_main_context_workaround()`) any worker
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* threads should use the draw manager opengl context and make sure that they are the only one
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* using it by locking the main context using these two functions. */
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void GPU_context_main_lock();
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void GPU_context_main_unlock();
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/* GPU Begin/end work blocks */
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void GPU_render_begin();
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void GPU_render_end();
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/* For operations which need to run exactly once per frame -- even if there are no render updates.
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*/
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void GPU_render_step();
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