Use an absolute path for CompileShaders.cmd (#660)

Author: bghgary

CMakeLists.txt

@@ -274,7 +274,7 @@ if(NOT USE_PREBUILT_SHADERS)
         MAIN_DEPENDENCY "${PROJECT_SOURCE_DIR}/Src/Shaders/CompileShaders.cmd"
         DEPENDS ${SHADER_SOURCES}
         COMMENT "Generating HLSL shaders..."
-        COMMAND ${CMAKE_COMMAND} -E env CompileShadersOutput="${COMPILED_SHADERS}" $<$<BOOL:${DIRECTX_FXC_TOOL}>:LegacyShaderCompiler=${DIRECTX_FXC_TOOL}> CompileShaders.cmd ARGS ${ShaderOpts} > "${COMPILED_SHADERS}/compileshaders.log"
+        COMMAND ${CMAKE_COMMAND} -E env CompileShadersOutput="${COMPILED_SHADERS}" $<$<BOOL:${DIRECTX_FXC_TOOL}>:LegacyShaderCompiler=${DIRECTX_FXC_TOOL}> "${PROJECT_SOURCE_DIR}/Src/Shaders/CompileShaders.cmd" ARGS ${ShaderOpts} > "${COMPILED_SHADERS}/compileshaders.log"
         WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}/Src/Shaders"
         USES_TERMINAL)
 endif()