r300: fix swtcl texrect path properly.

We really need to update the shader state so the texrect parameters work.

This should fix compiz looking crappy on rs480 and rs690
(cherry picked from commit 66a5562ce2)

src/mesa/drivers/dri/r300/r300_state.c

@@ -2129,10 +2129,11 @@ void r300UpdateShaders(r300ContextPtr rmesa)
 			hw_tcl_on = future_hw_tcl_on = 0;
 			r300ResetHwState(rmesa);
 
+			r300UpdateStateParameters(ctx, _NEW_PROGRAM);
 			return;
 		}
-		r300UpdateStateParameters(ctx, _NEW_PROGRAM);
 	}
+	r300UpdateStateParameters(ctx, _NEW_PROGRAM);
 }
 
 static void r300SetupPixelShader(r300ContextPtr rmesa)

src/mesa/drivers/dri/r300/r300_swtcl.c

@@ -591,6 +591,7 @@ static void r300RenderStart(GLcontext *ctx)
 	r300ChooseRenderState(ctx);	
 	r300SetVertexFormat(ctx);
 
+	r300UpdateShaders(rmesa);
 	r300UpdateShaderStates(rmesa);
 
 	r300EmitCacheFlush(rmesa);