From: Marek Olšák <marek.olsak@amd.com>
Date: Sat, 19 Apr 2014 22:53:32 +0000 (+0200)
Subject: r600g: fix buffer copying on R600-R700
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0967970768c517c8c2f1a969e0a043982b4b1bf7;p=mesa.git

r600g: fix buffer copying on R600-R700

This fixes broken rendering in DOTA 2.

Cc: 10.0 10.1 mesa-stable@lists.freedesktop.org
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/src/gallium/drivers/r600/r600_blit.c b/src/gallium/drivers/r600/r600_blit.c
index 98c07b5afdb..1a2a9112631 100644
--- a/src/gallium/drivers/r600/r600_blit.c
+++ b/src/gallium/drivers/r600/r600_blit.c
@@ -500,6 +500,12 @@ static void r600_copy_buffer(struct pipe_context *ctx, struct pipe_resource *dst
 	} else {
 		util_resource_copy_region(ctx, dst, 0, dstx, 0, 0, src, 0, src_box);
 	}
+
+	/* The index buffer (VGT) doesn't seem to see the result of the copying.
+	 * Can we somehow flush the index buffer cache? Starting a new IB seems
+	 * to do the trick. */
+	if (rctx->b.chip_class <= R700)
+		rctx->b.rings.gfx.flush(ctx, RADEON_FLUSH_ASYNC, NULL);
 }
 
 /**