st/xa: emit sampler view declarations in shaders

Fixes recent regressions with the VMware gallium driver.

Reviewed-by: Charmaine Lee <charmainel@vmware.com>
Tested-by: Charmaine Lee <charmainel@vmware.com>

src/gallium/state_trackers/xa/xa_tgsi.c

@@ -339,6 +339,16 @@ create_yuv_shader(struct pipe_context *pipe, struct ureg_program *ureg)
     u_sampler = ureg_DECL_sampler(ureg, 1);
     v_sampler = ureg_DECL_sampler(ureg, 2);
 
+    ureg_DECL_sampler_view(ureg, 0, TGSI_TEXTURE_2D,
+                           TGSI_RETURN_TYPE_FLOAT, TGSI_RETURN_TYPE_FLOAT,
+                           TGSI_RETURN_TYPE_FLOAT, TGSI_RETURN_TYPE_FLOAT);
+    ureg_DECL_sampler_view(ureg, 1, TGSI_TEXTURE_2D,
+                           TGSI_RETURN_TYPE_FLOAT, TGSI_RETURN_TYPE_FLOAT,
+                           TGSI_RETURN_TYPE_FLOAT, TGSI_RETURN_TYPE_FLOAT);
+    ureg_DECL_sampler_view(ureg, 2, TGSI_TEXTURE_2D,
+                           TGSI_RETURN_TYPE_FLOAT, TGSI_RETURN_TYPE_FLOAT,
+                           TGSI_RETURN_TYPE_FLOAT, TGSI_RETURN_TYPE_FLOAT);
+
     matrow0 = ureg_DECL_constant(ureg, 0);
     matrow1 = ureg_DECL_constant(ureg, 1);
     matrow2 = ureg_DECL_constant(ureg, 2);
@@ -475,6 +485,9 @@ create_fs(struct pipe_context *pipe, unsigned fs_traits)
     }
     if (is_composite) {
 	src_sampler = ureg_DECL_sampler(ureg, 0);
+        ureg_DECL_sampler_view(ureg, 0, TGSI_TEXTURE_2D,
+                               TGSI_RETURN_TYPE_FLOAT, TGSI_RETURN_TYPE_FLOAT,
+                               TGSI_RETURN_TYPE_FLOAT, TGSI_RETURN_TYPE_FLOAT);
 	src_input = ureg_DECL_fs_input(ureg,
 				       TGSI_SEMANTIC_GENERIC, 0,
 				       TGSI_INTERPOLATE_PERSPECTIVE);
@@ -494,12 +507,18 @@ create_fs(struct pipe_context *pipe, unsigned fs_traits)
 
     if (has_mask) {
 	mask_sampler = ureg_DECL_sampler(ureg, 1);
+        ureg_DECL_sampler_view(ureg, 1, TGSI_TEXTURE_2D,
+                               TGSI_RETURN_TYPE_FLOAT, TGSI_RETURN_TYPE_FLOAT,
+                               TGSI_RETURN_TYPE_FLOAT, TGSI_RETURN_TYPE_FLOAT);
 	mask_pos = ureg_DECL_fs_input(ureg,
 				      TGSI_SEMANTIC_GENERIC, 1,
 				      TGSI_INTERPOLATE_PERSPECTIVE);
     }
 #if 0				/* unused right now */
     dst_sampler = ureg_DECL_sampler(ureg, 2);
+    ureg_DECL_sampler_view(ureg, 2, TGSI_TEXTURE_2D,
+                           TGSI_RETURN_TYPE_FLOAT, TGSI_RETURN_TYPE_FLOAT,
+                           TGSI_RETURN_TYPE_FLOAT, TGSI_RETURN_TYPE_FLOAT);
     dst_pos = ureg_DECL_fs_input(ureg,
 				 TGSI_SEMANTIC_POSITION, 2,
 				 TGSI_INTERPOLATE_PERSPECTIVE);