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glsl: implement mid3 built-in function

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Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Maxence Le Doré
2014-01-03 00:09:53 +01:00
committed by Kenneth Graunke
parent 73c7451587
commit eb5dc75601
1 changed files with 38 additions and 0 deletions
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src/glsl/builtin_functions.cpp
+38
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@@ -586,6 +586,11 @@ private:
const glsl_type *y_type,
const glsl_type *z_type);
ir_function_signature *_mid3(builtin_available_predicate avail,
const glsl_type *x_type,
const glsl_type *y_type,
const glsl_type *z_type);
#undef B0
#undef B1
#undef B2
@@ -2156,6 +2161,23 @@ builtin_builder::create_builtins()
_max3(shader_trinary_minmax, glsl_type::uvec4_type, glsl_type::uvec4_type, glsl_type::uvec4_type),
NULL);
add_function("mid3",
_mid3(shader_trinary_minmax, glsl_type::float_type, glsl_type::float_type, glsl_type::float_type),
_mid3(shader_trinary_minmax, glsl_type::vec2_type, glsl_type::vec2_type, glsl_type::vec2_type),
_mid3(shader_trinary_minmax, glsl_type::vec3_type, glsl_type::vec3_type, glsl_type::vec3_type),
_mid3(shader_trinary_minmax, glsl_type::vec4_type, glsl_type::vec4_type, glsl_type::vec4_type),
_mid3(shader_trinary_minmax, glsl_type::int_type, glsl_type::int_type, glsl_type::int_type),
_mid3(shader_trinary_minmax, glsl_type::ivec2_type, glsl_type::ivec2_type, glsl_type::ivec2_type),
_mid3(shader_trinary_minmax, glsl_type::ivec3_type, glsl_type::ivec3_type, glsl_type::ivec3_type),
_mid3(shader_trinary_minmax, glsl_type::ivec4_type, glsl_type::ivec4_type, glsl_type::ivec4_type),
_mid3(shader_trinary_minmax, glsl_type::uint_type, glsl_type::uint_type, glsl_type::uint_type),
_mid3(shader_trinary_minmax, glsl_type::uvec2_type, glsl_type::uvec2_type, glsl_type::uvec2_type),
_mid3(shader_trinary_minmax, glsl_type::uvec3_type, glsl_type::uvec3_type, glsl_type::uvec3_type),
_mid3(shader_trinary_minmax, glsl_type::uvec4_type, glsl_type::uvec4_type, glsl_type::uvec4_type),
NULL);
#undef F
#undef FI
#undef FIU
@@ -4073,6 +4095,22 @@ builtin_builder::_max3(builtin_available_predicate avail,
return sig;
}
ir_function_signature *
builtin_builder::_mid3(builtin_available_predicate avail,
const glsl_type *x_type, const glsl_type *y_type,
const glsl_type *z_type)
{
ir_variable *x = in_var(x_type, "x");
ir_variable *y = in_var(y_type, "y");
ir_variable *z = in_var(z_type, "z");
MAKE_SIG(x_type, avail, 3, x, y, z);
ir_expression *mid3 = max(min(x, y), max(min(x, z), min(y, z)));
body.emit(ret(mid3));
return sig;
}
/** @} */
/******************************************************************************/