[Mesa-dev] [PATCH v2 2/3] gallium/r600: Don't let h/w do endian swap for colorformat

[Oded Gabbay]

Since the rework on gallium pipe formats, there is no more need to do
endian swap of the colorformat in the h/w, because the conversion between
mesa format and gallium (pipe) format takes endianess into account (see
the big #if in p_format.h).

v2: return ENDIAN_NONE only for four 8-bits components
(V_0280A0_COLOR_8_8_8_8)

Signed-off-by: Oded Gabbay <oded.gabbay at gmail.com>
Cc: "11.1 11.2" <mesa-stable at lists.freedesktop.org>
---
 src/gallium/drivers/r600/r600_state_common.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/gallium/drivers/r600/r600_state_common.c b/src/gallium/drivers/r600/r600_state_common.c
index c3346f2..b231d1e 100644
--- a/src/gallium/drivers/r600/r600_state_common.c
+++ b/src/gallium/drivers/r600/r600_state_common.c
@@ -2721,6 +2721,13 @@ uint32_t r600_colorformat_endian_swap(uint32_t colorformat)
 
 		/* 32-bit buffers. */
 		case V_0280A0_COLOR_8_8_8_8:
+			/*
+			 * No need to do endian swaps on four 8-bits components,
+			 * as mesa<-->pipe formats conversion take into account
+			 * the endianess
+			 */
+			return ENDIAN_NONE;
+
 		case V_0280A0_COLOR_2_10_10_10:
 		case V_0280A0_COLOR_8_24:
 		case V_0280A0_COLOR_24_8:
-- 
2.5.0