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From 1bd53e69fbe9eb2f717c5f952a17cd706377876a Mon Sep 17 00:00:00 2001
From: Stefan Agner <stefan@agner.ch>
Date: Thu, 22 Dec 2016 15:30:48 +0100
Subject: [PATCH] modesetting: Fix 16 bit depth/bpp mode
When setting DefaultDepth to 16 in the Screen section, the current
code requests a 32 bpp framebuffer, however the X-Server seems to
assumes 16 bpp.
Fixes commit 21217d02168d ("modesetting: Implement 32->24 bpp
conversion in shadow update")
Signed-off-by: Stefan Agner <stefan@agner.ch>
---
hw/xfree86/drivers/modesetting/driver.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/hw/xfree86/drivers/modesetting/driver.c b/hw/xfree86/drivers/modesetting/driver.c
index 14f80b36c..45804df05 100644
--- a/hw/xfree86/drivers/modesetting/driver.c
+++ b/hw/xfree86/drivers/modesetting/driver.c
@@ -832,7 +832,7 @@ PreInit(ScrnInfoPtr pScrn, int flags)
"Using 24bpp hw front buffer with 32bpp shadow\n");
defaultbpp = 32;
} else {
- ms->drmmode.kbpp = defaultbpp;
+ ms->drmmode.kbpp = 0;
}
bppflags = PreferConvert24to32 | SupportConvert24to32 | Support32bppFb;
@@ -852,6 +852,8 @@ PreInit(ScrnInfoPtr pScrn, int flags)
return FALSE;
}
xf86PrintDepthBpp(pScrn);
+ if (!ms->drmmode.kbpp)
+ ms->drmmode.kbpp = pScrn->bitsPerPixel;
/* Process the options */
xf86CollectOptions(pScrn, NULL);
--
2.11.0
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