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%% Copyright (c) 2017, Loïc Hoguin <[email protected]>
%%
%% Permission to use, copy, modify, and/or distribute this software for any
%% purpose with or without fee is hereby granted, provided that the above
%% copyright notice and this permission notice appear in all copies.
%%
%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-module(sdl_blend_mode).
-export([compose/6]).
-type blend_mode() :: none | blend | add | mod | invalid | integer().
-export_type([blend_mode/0]).
-type blend_operation() :: add | substract | rev_substract | minimum | maximum.
-type blend_factor() :: zero | one
| src_color | one_minus_src_color
| src_alpha | one_minus_src_alpha
| dst_color | one_minus_dst_color
| dst_alpha | one_minus_dst_alpha.
-spec compose(blend_factor(), blend_factor(), blend_operation(),
blend_factor(), blend_factor(), blend_operation()) -> blend_mode().
compose(SrcColorFactor, DstColorFactor, ColorOp,
SrcAlphaFactor, DstAlphaFactor, AlphaOp) ->
esdl2:compose_custom_blend_mode(
SrcColorFactor, DstColorFactor, ColorOp,
SrcAlphaFactor, DstAlphaFactor, AlphaOp),
receive {'_nif_thread_ret_', Ret} -> Ret end.
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