NAME

       ALLEGRO_RENDER_STATE - Allegro 5 API

SYNOPSIS

              #include <allegro5/allegro.h>

              typedef enum ALLEGRO_RENDER_STATE {

DESCRIPTION

       Possible render states which can be set with al_set_render_state(3alleg5):

       ALLEGRO_ALPHA_TEST
              If  this  is  set to 1, the values of ALLEGRO_ALPHA_FUNCTION and ALLEGRO_ALPHA_TEST_VALUE define a
              comparison function which is performed for each pixel.  Only if it evaluates to true the pixel  is
              written.  Otherwise no subsequent processing (like depth test or blending) is performed.

       ALLEGRO_ALPHA_FUNCTION
              One of ALLEGRO_RENDER_FUNCTION(3alleg5), only used when ALLEGRO_ALPHA_TEST is 1.

       ALLEGRO_ALPHA_TEST_VALUE
              Only used when ALLEGRO_ALPHA_TEST is 1.

       ALLEGRO_WRITE_MASK
              This  determines  how  the framebuffer and depthbuffer are updated whenever a pixel is written (in
              case alpha and/or depth testing is enabled: after all such enabled tests succeed).   Depth  values
              are only written if ALLEGRO_DEPTH_TEST is 1, in addition to the write mask flag being set.

       ALLEGRO_DEPTH_TEST
              If  this is set to 1, compare the depth value of any newly written pixels with the depth value al‐
              ready in the buffer, according to ALLEGRO_DEPTH_FUNCTION.  Allegro primitives with no  explicit  z
              coordinate will write a value of 0 into the depth buffer.

       ALLEGRO_DEPTH_FUNCTION
              One of ALLEGRO_RENDER_FUNCTION(3alleg5), only used when ALLEGRO_DEPTH_TEST is 1.

SINCE

       5.1.2

SEE ALSO

       al_set_render_state(3alleg5), ALLEGRO_RENDER_FUNCTION(3alleg5), ALLEGRO_WRITE_MASK_FLAGS(3alleg5)

Allegro reference manual                                                           ALLEGRO_RENDER_STATE(3alleg5)