There is an old if statement (dated to 2011) that prevented doing endian swap for colorformat, in case the buffer is marked as PIPE_USAGE_STAGING.
This is now wrong because st_ReadPixels() reads into a destination texture that is marked with PIPE_USAGE_STAGING. Therefore, even if the texture is rendered correctly to the monitor, when reading it back we get unswapped/wrong values. This patch makes the check_rgba() function in gl-1.0-readpixsanity piglit test pass in big-endian. Signed-off-by: Oded Gabbay <[email protected]> Cc: "11.1 11.2" <[email protected]> --- src/gallium/drivers/radeonsi/si_state.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c index b23b17a..15732a6 100644 --- a/src/gallium/drivers/radeonsi/si_state.c +++ b/src/gallium/drivers/radeonsi/si_state.c @@ -2250,11 +2250,7 @@ static void si_initialize_color_surface(struct si_context *sctx, } assert(format != V_028C70_COLOR_INVALID); swap = r600_translate_colorswap(surf->base.format); - if (rtex->resource.b.b.usage == PIPE_USAGE_STAGING) { - endian = V_028C70_ENDIAN_NONE; - } else { - endian = si_colorformat_endian_swap(format); - } + endian = si_colorformat_endian_swap(format); /* blend clamp should be set for all NORM/SRGB types */ if (ntype == V_028C70_NUMBER_UNORM || -- 2.5.0 _______________________________________________ mesa-dev mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-dev
