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[rcore] fix rpi4 Failed to get DRM resources (#2031)

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* [rcore] fix rpi4 Failed to get DRM resources

card1 is not always the the correct card to use on rpi4
rpi os finds the correct card and links it to /dev/dri/by-path/platform-gpu-card during boot.
this fix makes sure that we always point to the correct card on rpi4

* Update rcore.c
This commit is contained in:
tomarigr 2021-10-04 00:59:59 +01:00 committed by GitHub
parent 79f36799e7
commit 5d8c477d12
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 7 additions and 2 deletions
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9
src/rcore.c
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@ -3912,8 +3912,13 @@ static bool InitGraphicsDevice(int width, int height)
#if defined(DEFAULT_GRAPHIC_DEVICE_DRM)
CORE.Window.fd = open(DEFAULT_GRAPHIC_DEVICE_DRM, O_RDWR);
#else
TRACELOG(LOG_INFO, "DISPLAY: No graphic card set, trying card1");
CORE.Window.fd = open("/dev/dri/card1", O_RDWR); // VideoCore VI (Raspberry Pi 4)
TRACELOG(LOG_INFO, "DISPLAY: No graphic card set, trying platform-gpu-card");
CORE.Window.fd = open("/dev/dri/by-path/platform-gpu-card", O_RDWR); // VideoCore VI (Raspberry Pi 4)
if ((-1 == CORE.Window.fd) || (drmModeGetResources(CORE.Window.fd) == NULL))
{
TRACELOG(LOG_INFO, "DISPLAY: Failed to open platform-gpu-card, trying card1");
CORE.Window.fd = open("/dev/dri/card1", O_RDWR); // Other Embedded
}
if ((-1 == CORE.Window.fd) || (drmModeGetResources(CORE.Window.fd) == NULL))
{
TRACELOG(LOG_INFO, "DISPLAY: Failed to open graphic card1, trying card0");