[PATCH xf86-video-ati] Enable glamor by default with >= R600 and Xorg >= 1.18.3

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From: Michel Dänzer <michel.daenzer@xxxxxxx>

glamor should now perform at least as well as EXA in general, and this
allows DRI3 to be enabled by default for >= R600.

Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
 man/radeon.man      |  2 +-
 src/radeon_glamor.c | 11 +++++++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/man/radeon.man b/man/radeon.man
index 6af7a92..8990ae2 100644
--- a/man/radeon.man
+++ b/man/radeon.man
@@ -293,7 +293,7 @@ Chooses between available acceleration architectures.  Valid values are
 .B glamor
 (for R300 or higher). The default is
 .B glamor
-as of TAHITI, otherwise
+with R600 or newer (with Xorg >= 1.18.3, otherwise with TAHITI or newer), otherwise
 .B EXA.
 
 .PP
diff --git a/src/radeon_glamor.c b/src/radeon_glamor.c
index b66848f..590c9f0 100644
--- a/src/radeon_glamor.c
+++ b/src/radeon_glamor.c
@@ -84,8 +84,15 @@ radeon_glamor_pre_init(ScrnInfoPtr scrn)
 		return FALSE;
 
 	s = xf86GetOptValString(info->Options, OPTION_ACCELMETHOD);
-	if (s == NULL && info->ChipFamily < CHIP_FAMILY_TAHITI)
-		return FALSE;
+	if (!s) {
+		if (xorgGetVersion() >= XORG_VERSION_NUMERIC(1,18,3,0,0)) {
+			if (info->ChipFamily < CHIP_FAMILY_R600)
+				return FALSE;
+		} else {
+			if (info->ChipFamily < CHIP_FAMILY_TAHITI)
+				return FALSE;
+		}
+	}
 
 	if (s && strcasecmp(s, "glamor") != 0) {
 		if (info->ChipFamily >= CHIP_FAMILY_TAHITI)
-- 
2.10.2



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