From: Dave Airlie <airlied@redhat.com>
Date: Mon, 30 Nov 2015 06:01:31 +0000 (+1000)
Subject: r600: enable tessellation for evergreen/cayman (v2)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=33404f141551d0ace00101e78f9b2d93cad135f1;p=mesa.git

r600: enable tessellation for evergreen/cayman (v2)

This enables tessellation for evergreen/cayman,

This will need changes before committing depending
on what hw works etc.
working are CAYMAN/REDWOOD/BARTS/TURKS/SUMO/CAICOS

v2: only enable on evergreen and above.
---

diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index 3bebd033105..bc1a29d1470 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -343,7 +343,6 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_USER_VERTEX_BUFFERS:
 	case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 	case PIPE_CAP_VERTEXID_NOBASE:
-	case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 	case PIPE_CAP_DEPTH_BOUNDS_TEST:
 	case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 	case PIPE_CAP_SHAREABLE_SHADERS:
@@ -351,6 +350,11 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_CLEAR_TEXTURE:
 		return 0;
 
+	case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
+		if (family >= CHIP_CEDAR)
+			return 30;
+		else
+			return 0;
 	/* Stream output. */
 	case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 		return rscreen->b.has_streamout ? 4 : 0;
@@ -446,6 +450,10 @@ static int r600_get_shader_param(struct pipe_screen* pscreen, unsigned shader, e
 		if (rscreen->b.info.drm_minor >= 37)
 			break;
 		return 0;
+	case PIPE_SHADER_TESS_CTRL:
+	case PIPE_SHADER_TESS_EVAL:
+		if (rscreen->b.family >= CHIP_CEDAR)
+			break;
 	default:
 		/* XXX: support tessellation on Evergreen */
 		return 0;