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From 5028ef46ff4ab0930224b71024a7349b05610d42 Mon Sep 17 00:00:00 2001
From: Stefan Agner <stefan@agner.ch>
Date: Thu, 22 Dec 2016 15:41:06 +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>
Upstream-Status: Submitted [1]
[1] https://lists.x.org/archives/xorg-devel/2016-December/052113.html
---
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 d7030e5..647ad83 100644
--- a/hw/xfree86/drivers/modesetting/driver.c
+++ b/hw/xfree86/drivers/modesetting/driver.c
@@ -930,7 +930,7 @@ 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;
@@ -950,6 +950,8 @@ PreInit(ScrnInfoPtr pScrn, int flags)
return FALSE;
}
xf86PrintDepthBpp(pScrn);
+ if (!ms->drmmode.kbpp)
+ ms->drmmode.kbpp = pScrn->bitsPerPixel;
/* Process the options */
xf86CollectOptions(pScrn, NULL);
--
2.7.4
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