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gcc5 fix (Ubuntu 16.04 on ODROID-C1) #3

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gcc5 fix (Ubuntu 16.04 on ODROID-C1) #3

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hemi426
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@hemi426 hemi426 commented Jan 15, 2017

Fix to enable SDL2.0.5+mali to build on Ubuntu 16.04 running on HardKernel ODROID-C1.

Fix to enable SDL2.0.5+mali to build on Ubuntu 16.04 running on HardKernel ODROID-C1.
@hemi426
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hemi426 commented Jan 15, 2017

ISO C90 forbids mixed declarations and code in C, so this blows up when built with gcc5. Simple fix; please commit.

@joolswills
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Would be better to move just the declaration and leave the open where it is.

@joolswills
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I have applied a slightly different fix as mentioned. thanks for the heads up.

@joolswills joolswills closed this Jan 15, 2017
joolswills pushed a commit that referenced this pull request Sep 30, 2017
…onitor setup w/ DPI scaling

Eric Wasylishen 2017-07-26 18:42:58 UTC
I set up an (admittedly exotic) 3-monitor setup, and when I enter fullscreen-desktop on the middle display (#2), the SDL window is off center. (covers half of monitor #2 and most of monitor #3).

The displays are arranged from left to right:

Display #1 (main): 2880x1800, 200% scaling
Display #2: 1920x1200, 150% scaling
Display #3: 1920x1080, 100% scaling

SDL display bounds:
INFO: Bounds: 1440x900 at 0,0
INFO: Bounds: 1281x801 at 1921,0  (these are incorrect)
INFO: Bounds: 1920x1080 at 4800,0

Correct bounds reported by calling EnumDisplayMonitors and printing the LPRECT param of the callback:
1440x900 at (0, 0)
1280x800 at (2880, 0)
1920x1080 at (4800, 0)

It seems like you need 3 displays to reproduce this, and the left two need DPI scaling, and the 3rd display needs to have a different scale factor than the others.

Related: https://bugzilla.libsdl.org/show_bug.cgi?id=3709

SDL: current hg (11235:43c7baa53681)
Windows 10, Version 10.0.15063 Build 15063
Tested with testdraw2 and testgl2, and pressing alt+enter to enter fullscreen desktop.

This patch reworks SDL_windowsmodes.c to use EnumDisplayMonitors instead of EnumDisplayDevices, so we always have an HMONITOR for each SDL display.

With access to an HMONITOR, we can get the monitor bounds in virtual screen coordinates the proper way, by calling GetMonitorInfo. (whereas the original code was doing some calculations - e.g. "data->DeviceMode.dmPosition.x * data->ScaleX" - to try to get virtual screen coordinates. These worked in simple cases, but failed in more complex cases like this bug)

The one potential problem with my patch is, the ChangeDisplaySettingsEx docs say that you're supposed to get the display name from EnumDisplayDevices, but I'm getting the display name from GetMonitorInfo now.
joolswills pushed a commit that referenced this pull request Feb 28, 2020
Make sure the thread is actually paused, and context backep-up, before
SurfaceView is destroyed (eg surfaceDestroyed() actually returns).

Add a timeout when surfaceDestroyed() is called, and check 'backup_done' variable.

It prevents crashes like:

  #00  pc 000000000000c0d0  /system/lib64/libutils.so (android::RefBase::incStrong(void const*) const+8)
  #1  pc 000000000000c7f4  /vendor/lib64/egl/eglSubDriverAndroid.so (EglAndroidWindowSurface::UpdateBufferList(ANativeWindowBuffer*)+284)
  #2  pc 000000000000c390  /vendor/lib64/egl/eglSubDriverAndroid.so (EglAndroidWindowSurface::DequeueBuffer()+240)
  #3  pc 000000000000bb10  /vendor/lib64/egl/eglSubDriverAndroid.so (EglAndroidWindowSurface::GetBuffer(EglSubResource*, EglMemoryDesc*)+64)
  #4  pc 000000000032732c  /vendor/lib64/egl/libGLESv2_adreno.so (EglWindowSurface::UpdateResource(EsxContext*)+116)
  #5  pc 0000000000326dd0  /vendor/lib64/egl/libGLESv2_adreno.so (EglWindowSurface::GetResource(EsxContext*, EsxResource**, EsxResource**, int)+56)
  #6  pc 00000000002ae484  /vendor/lib64/egl/libGLESv2_adreno.so (EsxContext::AcquireBackBuffer(int)+364)
  #7  pc 0000000000249680  /vendor/lib64/egl/libGLESv2_adreno.so (EsxContext::Clear(unsigned int, unsigned int, unsigned int, EsxClearValues*)+1800)
  #8  pc 00000000002cb52c  /vendor/lib64/egl/libGLESv2_adreno.so (EsxGlApiParamValidate::GlClear(EsxDispatch*, unsigned int)+132)
joolswills pushed a commit to joolswills/SDL-mirror that referenced this pull request Jun 24, 2020
…arently handle more of the work.

1. Comment that SDL_SetThreadPriority will make any necessary system changes when applying priority.
2. Add a hint to override SDL's default behavior for scheduler policy.
3. Modify the pthreads SDL_SetThreadPriority so that instead of just using the current thread scheduler policy it will change it to a policy that should work best for the requested priority.
4. Add hint checks in SDL_SetThreadPriority so that RetroPie#3 can be overridden if desired.
5. Modify the Linux SDL_SetThreadPriority so that in the case that policy, either by SDL defaults or from the hint, is a realtime policy it uses the realtime rtkit API.
6. Prior to calling rtkit on Linux make the necessary thread state changes that rtkit requires.  Currently this is done every time as it isn't expected that SDL_SetThreadPriority will be called repeatedly for a thread.
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