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120c76c8
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2022-01-03T09:40:00
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Updated copyright for 2022
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fc508eab
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2021-05-23T15:59:20
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kmsdrm: remove redundant modeset_pending flag
this variable was added in commit 2067a7db8e4a36ba40ab34a55b3166ca28638a60 and
ultimately tracks if this is a surface's first present. checking if the current
bo is NULL provides the same functionality and cuts down on a redundant piece
of state potentially getting out of sync in the future
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4c965b7a
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2021-05-23T16:09:27
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kmsdrm: fix SetDisplayMode binding the the wrong surface / context
SetDisplayMode needs to recreate the EGL surfaces, which then need to be
bound along with the correct context in each rendering thread
commit 3a1d7d9c9ac670bf35cfa8ebf3706a1e2a3e5de4 removed this behavior which
has broken using SetDisplayMode when rendering with multiple contexts
the commit message was rather vague, but if the surfaces do need to be
created immediately, this process probably needs to be split such that
surface is created immediately, but the binding is deferred
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8638674a
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2021-03-18T13:55:58
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[KMSDRM] Correct comment typo.
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6ee53258
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2021-02-06T14:03:53
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[KMS/DRM] Replace indent tabs with spaces, as intended.
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bfa51c38
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2021-01-31T03:48:29
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[KMS/DRM] Fix for bug #5518: only do async pageflips when hardware supports them.
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03665004
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2021-01-15T15:00:17
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[KMS/DRM] Small fix to KMSDRM_Waitpageflip(). More comments on how it works.
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1adadc77
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2021-01-14T10:18:40
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[KMS/DRM] Adjust come return values. Improve comments.
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ead3c406
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2021-01-13T20:11:01
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[KMS/DRM] Refactor, improve and re-comment async pageflips code.
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aac74db6
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2021-01-13T15:54:26
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[KMS/DRM] Enable async pageflips.
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85e8adf7
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2021-01-11T22:28:27
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[KMS/DRM] Unused code cleaning.
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2067a7db
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2021-01-11T20:29:09
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[KMS/DRM] Fix fullscreen to windowed transition. Fix aspect ratio correction without using planes.
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850d9c8c
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2021-01-09T02:25:13
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[KMS/DRM] Cleanup remainings from plane/scaling usage.
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2aeb3177
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2021-01-08T22:00:28
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[KMS/DRM] Fix vkQuake3 in OpenGL mode.
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b2449473
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2021-01-08T18:57:12
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[KMS/DRM] Go back to the LEGACY interface only because using planes breaks compatibility with HW, so no advantage on using ATOMIC.
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cef1bd06
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2021-01-08T13:14:42
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[KMS/DRM] Prevent creating another default cursor everytime a window is created. Other fixes and cleanups.
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9130f7c3
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2021-01-02T10:25:38
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Updated copyright for 2021
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21003b7d
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2020-12-31T14:31:29
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[KMS/DRM] Small refactoring on the SwapWindow function.
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e34caa97
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2020-12-31T01:31:57
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[KMS/DRM] Correct EGL/GL library loading on window creation, thus saving window re-creation.
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427c96ec
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2020-12-29T14:24:38
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[KMS/DRM] Rework some functions.
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0feaf7d1
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2020-12-28T14:37:58
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[KMS/DRM][Vulkan] Correct non-existing property. Remove hacky surface destruction code (TTY buffer isn't there after a Vulkan window is created).
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2fc987c2
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2020-12-22T14:15:33
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[Buildsystem] Add guards for not building with KMSDRM support if EGL is not available.
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f60f8d5d
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2020-12-18T22:53:51
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[Video/KMSDRM]: Add Vulkan support to the KMSDRM backend.
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87a86675
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2020-10-22T16:01:51
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kmsdrm: Always use spaces for indentation. Always use SDL_calloc() for calloc.
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0cb9bfa5
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2020-09-12T15:58:47
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kmsdrm: less excessive error checkhing
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5bed30dd
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2020-09-12T04:56:55
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kmsdrm: also do pending modeseting in SwapWindowDoubleBuffered().
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9e9227ad
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2020-09-12T04:52:56
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kmsdrm: reimplement modesetting for fullscreen window scaling and AR-correction.
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a6d182d3
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2020-09-11T23:47:26
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kmsdrm: no need to reconnect/reactivate things in SwapWindowDoubleBuffered().
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47e2d030
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2020-09-10T23:26:02
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kmsdrm: greatly improve comments in SwapBuffersFenced() for future reference.
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3c6004fe
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2020-09-10T15:07:23
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kmsdrm: Choose how to swap buffers based on EGL extension availability.
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c7e761f8
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2020-09-10T15:05:55
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kmsdrm: Patched to compile if EGL headers lack EGL_ANDROID_native_fence_sync.
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224aa45b
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2020-09-10T15:04:35
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kmsdrm: Implement GL_DefaultProfileConfig for Raspberry Pi compatibility.
If we think this might be a Raspberry Pi device, default to ES2. Otherwise,
accept SDL's higher-level defaults.
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055cad49
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2020-09-10T02:15:53
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kmsdrm: no need to re-connect/reactivate things in SwapWindow() anymore because we use a dumb buffer on KMS buffers destruction now.
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daa752b1
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2020-09-06T23:19:54
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kmsdrm: fix first frame display: no need to wait for SwapWindow() for EGL surface creation.
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68ac9349
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2020-09-06T12:48:39
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kmsdrm: more coherent returns for SwapWindow.
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d3d9d432
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2020-09-06T12:17:27
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kmsdrm: Remove debug printfs in SwapWindow.
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d7aebbd5
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2020-09-06T12:08:22
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kmsdrm: Don't create surfaces until EGL context is available.
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f4e02a5c
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2020-08-31T19:17:17
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kmsdrm: Do NOT modify window size manually from the backend: doing so caused renderer scaling params miscalculation.
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31b17945
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2020-08-28T22:38:26
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kmsdrm: use PLANE and CRTC to do hardware-driven window scaling and AR-correction.
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9b43464d
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2020-08-25T16:30:23
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kmsdrm: Add programmer credits to the Atomic KMSDRM driver.
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9316a8d9
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2020-08-25T16:18:49
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kmsdrm: move FENCE FD props setting to SwapWindow(), where it belongs.
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d43e666e
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2020-08-25T04:05:36
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kmsdrm: Buffer management refactoring. Fixes for compatibility with more video drivers.
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0d593d7e
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2020-08-23T23:44:07
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kmsdrm: Add error control to plane prop setting function. Do most plane prop setting with a single function.
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0b7b7721
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2020-08-23T03:13:50
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kmsdrm: remove redundant function, use drm_atomic_setbuffers() for disconnecting planes instead.
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16c04f26
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2020-08-23T02:58:57
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kmsdrm: Init cursor surface on SetCursor() ONLY. Removal of dynamic modeset because it causes A LOT of problems with some kernel video drivers. Some refactoring and cleanups.
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5d32eda9
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2020-08-19T01:31:22
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kmsdrm: implement smarter surface recreation function to be used in videomode changes. Other minor arrangements.
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92cb9192
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2020-08-17T18:35:04
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kmsdrm: move hardware cursor functionality to the ATOMIC interface. Disconnect the display plane from the GBM surface buffers before destroying the GBM surface.
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c437729b
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2020-08-08T14:27:55
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kmsdrm: separate requests in different functions so we only need one atomic commit for everything, as expected by atomic design.
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3b9f1073
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2020-08-07T11:53:04
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kmsdrm: wait for possible pending atomic commits before destroying surfaces, and before restoring video on quit. Move messages to the SDL_Log* functions.
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96c99693
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2020-08-06T01:36:56
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kmsdrm: wait for pending atomic commits before restoring videomode and crtc->buffer on VideoQuit, and simplify double-buffer SwapWindow() implementation.
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09692b61
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2020-08-05T18:55:22
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kmsdrm: move videomode restoration on VideoQuit() to using the atomic interface instead of the legacy drmModeSetCrtc() function. Refactoring of get_plane_id().
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2d69ce08
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2020-08-05T02:06:59
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kmsdrm: double and triple buffered versions of SwapWindow() are now both reimplemented in atomic pageflipping versions, and can be selected via SDL_VIDEO_DOUBLE_BUFFER env variable.
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8996ee17
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2020-08-03T22:24:49
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kmsdrm: update SwapWindow fn, moving it to triple-buffer.
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b131661c
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2020-08-01T18:23:34
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kmsdrm: rewrite the new SwapWindow() fn to avoid tearing. Double-buffer only for now.
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1a5503ce
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2020-07-28T21:11:25
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kmsdrm: Moved to the ATOMIC KMS/DRM interface for buffer swapping, leaving DRM-legacy behind.
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412b21b0
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2020-07-20T11:42:23
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Rename the gbm device struct from gbm to gbm_dev for better readabilty.
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b6a818b6
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2020-07-19T18:45:29
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Fix SDL_Window recreation: drmModeSetCrtc() has to be called everytime the EGL and GBM surfaces are recreated.
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1df0a1e4
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2020-05-26T16:27:00
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Fixed bug 5140 - KMSDRM: Dynamic vsync toggle does not work
Manuel Alfayate Corchete
The KMSDRM backend was doing things wrong because of some small (but important) misconceptions on how KMS/DRM works: to implement a largely broken non-vsync refresh mechanism, the SwapWindow() function was issuing new pageflips before previous ones had completed, thus causing EBUSY returns, buffer mismanagement, etc... resulting in general breakage on vsync disabling from apps, that would not allow vsync to work again without KMSDRM video re-initialization.
To further clarify, on most DRM drivers async pageflips are NOT working nowadays, so all issued pageflips will complete on next VBLANK, NOT ASAP (calling drmModePageFlip() with the DRM_MODE_PAGE_FLIP_ASYNC flag will return error).
The old code was assuming that can just issue a synchronous (=on VBLANK) pageflip and then pass a 0 timeout to the pull() function so we do not wait for the pageflip event, thinking that this will lead to correct non-vsynced screen updates from the program: That is plain wrong.
Each pageflip has to be waite before issuing a new one, ALWAYS. And if we do not support ASYNC pageflips on the DRM driver level, then we are forced to wait for the next VBLANK. There is no way around it.
I have also added many comments on the KMSDRM code. This is needed for future reference for me or others who may need to look at this code: KMS/DRM terminology regarding what SYNC and ASYNC mean in pageflip terms, and where to do certain things and why, is not trivial. It is not desirable or possible to invest time on researching the same concepts every time there is need to dive into this code. So please leave all these comments in the patch.
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b6afbe63
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2020-04-07T09:38:57
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Added SDL_log.h to SDL_internal.h so logging is available everywhere
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9013c916
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2020-02-27T08:20:34
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Fixed bug 5005 - warnings in kmsdrm
Malte Kie?ling
At the moment i get following warnings from kmsdrm:
* in SDL_kmsdrmvideo.c KMSDRM_DestroySurfaces is return type int, but thats never returned or checked against
* in SDL_kmsdrmvideo.c KMSDRM_DestroySurfaces the variable viddata is not used
* in SDL_kmsdrmopengles.c KMSDRM_GLES_LoadLibrary a cast to NativeDisplayType is missing
I attached a patch for them :)
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35704c98
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2020-02-14T16:17:17
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Fixed bug 4980 - Build fails for SDL_kmsdrm*.c
Malte Kie?ling
Since https://hg.libsdl.org/SDL/rev/f908bd722523 / bug 4966 i cannot build SDL anymore. The error i get is, essentially, caused by -Werror=declaration-after-statement in SDL_kmsdrmvideo.c and SDL_kmsdrmopengles.c
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3e935aec
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2020-02-09T11:44:22
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Fixed bug 4966 - KMSDRM: Add dynamic modeset support
Anthony Pesch
* Remove triple buffering support. As far as I can tell, this goes against the libdrm API; the EGL implementations themselves control the buffering. Removing it isn't absolutely necessary as it seemingly works on the Pi at least, but I noticed this while doing my work and explained my reasoning in the commit.
* Replace the crtc_ready logic which allocates an extra bo to perform the initial CRTC configuration (which is required before calling drmModePageFlip) with a call to drmModeSetCrtc after the front and back buffers are allocated, avoiding this allocation.
* Standardized the SDL_*Data variable names and null checks to improve readability. Given that there were duplicate fields in each SDL_*Data structure, having generic names such as "data" at times was very confusing.
* Removed unused fields from the SDL_*Data structures and moves all display related fields out of SDL_VideoData and into SDL_DisplayData. Not required since the code only supports a single display right now, but this was helpful in reading and understanding the code initially.
* Implement KMSDRM_GetDisplayModes / KMSDRM_SetDisplayMode to provide dynamic modeset support.
These changes have been tested on a Raspberry Pi 4 and a Dell XPS laptop with an HD 520.
As an update, I went back over the triple buffer changes and left them in. I didn't entirely get the code originally, I had just seen it calling KMSDRM_gbm_surface_lock_front_buffer twice for a single swap and had removed it because I was paranoid of bugs stemming from it while working on the modeset changes.
I've made a few small changes to the logic that had thrown me off originally and rebased the changes:
* The condition wrapping the call to release buffer was incorrect.
* The first call to KMSDRM_gbm_surface_lock_front_buffer has been removed. I don't understand why it existed.
* Added additional comments describing what was going on in the code (as it does fix the buffer release pattern of the original code before it).
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a8780c6a
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2020-01-16T20:49:25
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Updated copyright date for 2020
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2d37d291
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2019-09-06T08:44:46
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KMSDRM_GLES_SwapWindow: fix non-vsync case
If KMSDRM_drmModeSetCrtc is called when the swap interval is
set to 0, the driver behaves as though vertical sync is engaged by
limiting framerate to the refresh rate, but performance is much worse
than with vertical sync enabled.
Resolve this issue by ensuring that the Crtc is only set up once,
and KMSDRM_drmModePageFlip is called, albeit without any followup
queueing or waiting for flips.
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5e13087b
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2019-01-04T22:01:14
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Updated copyright for 2019
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3ac9e2aa
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2018-10-05T17:06:05
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Fixed bug 4296 - kmsdrm video driver leaks 1 bo in KMSDRM_GLES_SetupCrtc()
Icenowy Zheng
One front buffer is locked in GLES_SetupCrtc() and overrides the next_bo just locked in KMSDRM_GLES_SwapWindow, then the next_bo gets lost and is not released even when quitting the video.
It may leads to problems with GLES drivers that doesn't clean up GBM correctly if there's any bo left (e.g. the Mali Utgard r6p2 blob). In the case of Mali Utgard r6p2 blob, the DRM device file is still hold by the blob, and if you try to SDL_Quit to let another program to run (this is done by EmulationStation), the new program will fail to open DRM device.
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5febdfce
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2018-09-24T11:49:25
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Fixed whitespace
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e3cc5b2c
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2018-01-03T10:03:25
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Updated copyright for 2018
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2ac567b7
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2017-10-26T16:37:20
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Fixed bug 3902 - Add a specific KMSDRM hint for low latency video
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10376eb9
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2017-10-21T04:20:57
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Fixed bug 3901 - Fix vsync-ed pageflips on the KMSDRM video driver
Manuel
I noticed that, at least on Intel GPU hardware, passing SDL_RENDERER_PRESENTVSYNC would result on a static console instead of the program graphics.
That was due to the fact that calling drmModePageFlip() only works if we have previously set up CRTC to one of the GBM buffers with a drmModeSetCrtc() call, so now it's done and things work as expected.
The KMSDRM_GLES_SetupCrtc() call is done only one time, only when needed (when egl_swapinterval is not 0: when it's 0, there's no need for it because we flip by calling drmModePageFlip() anyway).
The place where KMSDRM_GLES_SetupCrtc() call is done may look strange, but it's right: it needs EGL completely ready because it needs to call eglSwapBuffers() internally to work (see more comments about it in the code).
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11717184
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2017-08-21T17:20:50
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kmsdrm: Cleanup unused headers, rename SDL_kmsdrmevents_c.h -> SDL_kmsdrmevents.h
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f216b446
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2017-08-05T22:10:36
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kmsdrm: Fixed crashes if allocating memory failed.
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86e95a60
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2017-08-02T17:45:15
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kmsdrm: Fix tearing in neverputt/ball
https://gfycat.com/FatalFarawayHeron
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56363ebf
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2017-08-02T10:22:48
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Fixed bug 3690 - SDL2 KMS/DRM render context support
Manuel
The attached patch adds support for KMS/DRM context graphics.
It builds with no problem on X86_64 GNU/Linux systems, provided the needed libraries are present, and on ARM GNU/Linux systems that have KMS/DRM support and a GLES2 implementation.
Tested on Raspberry Pi: KMS/DRM is what the Raspberry Pi will use as default in the near future, once the propietary DispmanX API by Broadcom is overtaken by open graphics stack, it's possible to boot current Raspbian system in KMS mode by adding "dtoverlay=vc4-kms-v3d" to config.txt on Raspbian's boot partition.
X86 systems use KMS right away in every current GNU/Linux system.
Simple build instructions:
$./autogen.sh
$./configure --enable-video-kmsdrm
$make
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