d3d9/tests: Give the texture transform test a defined colorop.

dlls/d3d9/tests/visual.c

@@ -4063,6 +4063,10 @@ static void texture_transform_flags_test(IDirect3DDevice9 *device)
     ok(hr == D3D_OK, "IDirect3DDevice9_SetSamplerState(D3DSAMP_ADDRESSV) returned %08x\n", hr);
     hr = IDirect3DDevice9_SetSamplerState(device, 0, D3DSAMP_ADDRESSW, D3DTADDRESS_CLAMP);
     ok(hr == D3D_OK, "IDirect3DDevice9_SetSamplerState(D3DSAMP_ADDRESSW) returned %08x\n", hr);
+    hr = IDirect3DDevice9_SetTextureStageState(device, 0, D3DTSS_COLOROP, D3DTOP_SELECTARG1);
+    ok(hr == D3D_OK, "IDirect3DDevice9_SetTextureStageState(D3DTSS_COLOROP) returned %08x\n", hr);
+    hr = IDirect3DDevice9_SetTextureStageState(device, 0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
+    ok(hr == D3D_OK, "IDirect3DDevice9_SetTextureStageState(D3DTSS_COLORARG1) returned %08x\n", hr);
     hr = IDirect3DDevice9_SetRenderState(device, D3DRS_LIGHTING, FALSE);
     ok(hr == D3D_OK, "IDirect3DDevice9_SetRenderState(D3DRS_LIGHTING) returned %08x\n", hr);
     hr = IDirect3DDevice9_Clear(device, 0, NULL, D3DCLEAR_TARGET, 0xff0000ff, 0.0, 0);