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
