Mesa (master): r600g: enable blend_bypass for uint/sint

[Dave Airlie]

Module: Mesa
Branch: master
Commit: a33937d043f9c1795d2be635117a7cc9646ff0ce
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a33937d043f9c1795d2be635117a7cc9646ff0ce

Author: Dave Airlie <airlied at redhat.com>
Date:   Sun Jan 29 19:38:28 2012 +0000

r600g: enable blend_bypass for uint/sint

---

 src/gallium/drivers/r600/r600_state.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)

diff --git a/src/gallium/drivers/r600/r600_state.c b/src/gallium/drivers/r600/r600_state.c
index 8e5342c..2dcc245 100644
--- a/src/gallium/drivers/r600/r600_state.c
+++ b/src/gallium/drivers/r600/r600_state.c
@@ -1467,6 +1467,7 @@ static void r600_cb(struct r600_pipe_context *rctx, struct r600_pipe_state *rsta
 	unsigned offset;
 	const struct util_format_description *desc;
 	int i;
+	unsigned blend_bypass = 0, blend_clamp = 1;
 
 	surf = (struct r600_surface *)state->cbufs[cb];
 	rtex = (struct r600_resource_texture*)state->cbufs[cb]->texture;
@@ -1515,10 +1516,20 @@ static void r600_cb(struct r600_pipe_context *rctx, struct r600_pipe_state *rsta
 		endian = r600_colorformat_endian_swap(format);
 	}
 
+	/* set blend bypass according to docs if SINT/UINT or
+	   8/24 COLOR variants */
+	if (ntype == V_0280A0_NUMBER_UINT || ntype == V_0280A0_NUMBER_SINT ||
+	    format == V_0280A0_COLOR_8_24 || format == V_0280A0_COLOR_24_8 ||
+	    format == V_0280A0_COLOR_X24_8_32_FLOAT) {
+		blend_clamp = 0;
+		blend_bypass = 1;
+	}
+
 	color_info = S_0280A0_FORMAT(format) |
 		S_0280A0_COMP_SWAP(swap) |
 		S_0280A0_ARRAY_MODE(rtex->array_mode[level]) |
-		S_0280A0_BLEND_CLAMP(1) |
+		S_0280A0_BLEND_BYPASS(blend_bypass) |
+		S_0280A0_BLEND_CLAMP(blend_clamp) |
 		S_0280A0_NUMBER_TYPE(ntype) |
 		S_0280A0_ENDIAN(endian);