f7d38e2e64
In Blender 2.90 EEVEE materials were refactored that introduced crashes on Intel GPUs on Windows. The crash happened in the `local_context_workaround` that temporary stored compiled materials in a binary form to reload it in the main GL context. It has been tested that the workaround isn't needed anymore for HD6xx GPUs, but it is still needed for HD4000. After several unsuccesfull fixes we came to the conclusion that we could not support the local context workaround and needed to come with a different workaround. The idea of this patch is that in these cases there is only a single context that is used for rendering. Threads that uses these contextes are guarded by a mutex and will block. Impact on User Level: * Due to main mutex lock the UI freezes when rendering or baking or feel less snappy Reviewed By: Clément Foucault, Brecht van Lommel Differential Revision: https://developer.blender.org/D8410
58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2016 by Mike Erwin.
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* All rights reserved.
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*/
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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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#ifndef __GPU_CONTEXT_H__
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#define __GPU_CONTEXT_H__
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#include "GPU_batch.h"
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#include "GPU_common.h"
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#include "GPU_shader_interface.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct GPUContext GPUContext;
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GPUContext *GPU_context_create(GLuint default_framebuffer);
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void GPU_context_discard(GPUContext *);
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void GPU_context_active_set(GPUContext *);
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GPUContext *GPU_context_active_get(void);
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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(void);
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void GPU_context_main_unlock(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __GPU_CONTEXT_H__ */
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