radv: always mark drawid/base_instance used with ESO

The user SGPR is always declared for merged shaders compiled separately
because the args must match.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27336>

src/amd/vulkan/radv_cmd_buffer.c

@@ -6399,6 +6399,14 @@ radv_bind_pre_rast_shader(struct radv_cmd_buffer *cmd_buffer, const struct radv_
       cmd_buffer->state.uses_drawid = shader->info.vs.needs_draw_id;
       cmd_buffer->state.uses_baseinstance = shader->info.vs.needs_base_instance;
 
+      if (shader->info.merged_shader_compiled_separately) {
+         /* Merged shaders compiled separately (eg. VS+TCS) always declare these user SGPRS
+          * because the input arguments must match.
+          */
+         cmd_buffer->state.uses_drawid = true;
+         cmd_buffer->state.uses_baseinstance = true;
+      }
+
       /* Re-emit some vertex states because the SGPR idx can be different. */
       cmd_buffer->state.last_first_instance = -1;
       cmd_buffer->state.last_vertex_offset_valid = false;