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authorA. Wilcox <AWilcox@Wilcox-Tech.com>2020-02-27 04:40:40 -0600
committerA. Wilcox <AWilcox@Wilcox-Tech.com>2020-02-27 04:40:40 -0600
commitb69f6a06f8698c72c30465dbfa1cc91334551b03 (patch)
tree6584de6349afc8c3cef8611ccb32601c996afa90 /user/mesa/big-endian-flipping.patch
parent0d1e21187a5e1c89f5d79e5a8623b2e678524b1d (diff)
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user/mesa: Fix behaviour on big endian systems
Diffstat (limited to 'user/mesa/big-endian-flipping.patch')
-rw-r--r--user/mesa/big-endian-flipping.patch37
1 files changed, 37 insertions, 0 deletions
diff --git a/user/mesa/big-endian-flipping.patch b/user/mesa/big-endian-flipping.patch
new file mode 100644
index 000000000..154a83108
--- /dev/null
+++ b/user/mesa/big-endian-flipping.patch
@@ -0,0 +1,37 @@
+From f1e0d76264491a8d8f99a0041b1a36cf9752fd28 Mon Sep 17 00:00:00 2001
+From: "A. Wilcox" <AWilcox@Wilcox-Tech.com>
+Date: Thu, 27 Feb 2020 04:24:52 -0600
+Subject: [PATCH] mesa: Support flipping three-channel formats
+
+Test system: POWER9 ppc64 (BE) system with a Radeon R5 230.
+
+Before this commit, starting Xorg caused this message:
+Assertion failed: !"Invalid array format" (../src/mesa/main/formats.c: _mesa_array_format_flip_channels: 421)
+
+After this commit, Xorg starts successfully.
+---
+ src/mesa/main/formats.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/src/mesa/main/formats.c b/src/mesa/main/formats.c
+index 370859d37ca..2e7d5d7f05e 100644
+--- a/src/mesa/main/formats.c
++++ b/src/mesa/main/formats.c
+@@ -419,6 +419,14 @@ _mesa_array_format_flip_channels(mesa_array_format format)
+ return format;
+ }
+
++ if (num_channels == 3) {
++ static const uint8_t flip[6] = { 2, 1, 0, 3, 4, 5 };
++ _mesa_array_format_set_swizzle(&format,
++ flip[swizzle[0]], flip[swizzle[1]],
++ flip[swizzle[2]], flip[swizzle[3]]);
++ return format;
++ }
++
+ if (num_channels == 4) {
+ static const uint8_t flip[6] = { 3, 2, 1, 0, 4, 5 };
+ _mesa_array_format_set_swizzle(&format,
+--
+2.25.1
+