From: Dave Airlie <airlied@redhat.com>
Date: Mon, 30 Nov 2015 00:49:11 +0000 (+1000)
Subject: r600: disable SB for now on tess related shaders.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=bdf7dadda8815f00fd6eb3c418fd0f12df32826d;p=mesa.git

r600: disable SB for now on tess related shaders.

Note we have to disable on vertex shaders when we are
operating in tes mode.

Signed-off-by: Dave Airlie <airlied@redhat.com>
---

diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index ef024e626c9..338427e894e 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -161,6 +161,13 @@ int r600_pipe_shader_create(struct pipe_context *ctx,
 		R600_ERR("translation from TGSI failed !\n");
 		goto error;
 	}
+	if (shader->shader.processor_type == TGSI_PROCESSOR_VERTEX) {
+		/* only disable for vertex shaders in tess paths */
+		if (key.vs.as_ls)
+			use_sb = 0;
+	}
+	use_sb &= (shader->shader.processor_type != TGSI_PROCESSOR_TESS_CTRL);
+	use_sb &= (shader->shader.processor_type != TGSI_PROCESSOR_TESS_EVAL);
 
 	/* disable SB for shaders using doubles */
 	use_sb &= !shader->shader.uses_doubles;