D3D9: Add traces for when shader support is missing in the shader test.

[H. Verbeet]

Changelog:
  - Add traces for when shader support is missing in the shader test.
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diff --git a/dlls/d3d9/tests/shader.c b/dlls/d3d9/tests/shader.c
index 6da5164..8ecf273 100644
--- a/dlls/d3d9/tests/shader.c
+++ b/dlls/d3d9/tests/shader.c
@@ -150,9 +150,14 @@ START_TEST(shader)
     if (caps.VertexShaderVersion & 0xffff)
     {
         test_get_set_vertex_shader(device_ptr);
+    } else {
+        trace("No vertex shader support, skipping test\n");
     }
+    
     if (caps.PixelShaderVersion & 0xffff)
     {
         test_get_set_pixel_shader(device_ptr);
+    } else {
+        trace("No pixel shader support, skipping test\n");
     }
 }