gpu_get_zfunc

描述

This function can be used to retrieve the z comparison mode. The value returned will be one of the following constants (the default value is cmpfunc_lessequal):

• cmpfunc_never
• cmpfunc_less
• cmpfunc_equal
• cmpfunc_lessequal
• cmpfunc_greater
• cmpfunc_notequal
• cmpfunc_greaterequal
• cmpfunc_always

语法：

gpu_get_zfunc();

返回：

Constant (see table above)

例如：

if gpu_get_zfunc() != cmpfunc_greater
   {
   gpu_set_zfunc(cmpfunc_greater);
   }

The above code checks to see if the z-testing method is set to cmpfunc_greater and if not then it is set to that constant.

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