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Substring I was trying the KMSDRM video backend with some very simple programs that were working ok on 2.0.12. The same code won?t work on the current dev branch and I get: DEBUG: check_modesetting: probing ?/dev/dri/card0? DEBUG: /dev/dri/card0 connector, encoder and CRTC counts are: 4 5 6 DEBUG: check_modesetting: probing ?/dev/dri/card0? DEBUG: /dev/dri/card0 connector, encoder and CRTC counts are: 4 5 6 DEBUG: KMSDRM_VideoInit() DEBUG: Opening device /dev/dri/card0 DEBUG: Opened DRM FD (3) DEBUG: no atomic modesetting support. DEBUG: Video subsystem has not been initialized INFO: Using SDL video driver: (null) DEBUG: Video subsystem has not been initialized After carefully checking, the radeon driver doesn?t support atomic modesetting. That?s not the only problem : the same happens with the amdgpu driver if we disable Display Core (kernel parameter amdgpu.dc=0, which is required to get analogue outputs working). This is a major regression in the KMSDRM driver. Using atomic mode setting is great, but having no fallback to the "standard KMS" is bad.
32 lines
1.2 KiB
C
32 lines
1.2 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#ifndef SDL_kmsdrmevents_h_
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#define SDL_kmsdrmevents_h_
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extern void KMSDRM_LEGACY_PumpEvents(_THIS);
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extern void KMSDRM_LEGACY_EventInit(_THIS);
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extern void KMSDRM_LEGACY_EventQuit(_THIS);
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#endif /* SDL_kmsdrmevents_h_ */
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