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authorMaxence Le DorĂ© <[email protected]>2014-01-03 00:09:53 +0100
committerKenneth Graunke <[email protected]>2014-01-06 14:28:09 -0800
commiteb5dc75601708d2d9bdf822960ae5b9151c105a1 (patch)
tree66004ccbdbe176619a219d9476b21b0c2eb4f571 /src/glsl/builtin_functions.cpp
parent73c74515879335625909d70e229e80caaac86aa3 (diff)
glsl: implement mid3 built-in function
Reviewed-by: Kenneth Graunke <[email protected]>
Diffstat (limited to 'src/glsl/builtin_functions.cpp')
-rw-r--r--src/glsl/builtin_functions.cpp38
1 files changed, 38 insertions, 0 deletions
diff --git a/src/glsl/builtin_functions.cpp b/src/glsl/builtin_functions.cpp
index 94ae2a46a81..f56be0c691a 100644
--- a/src/glsl/builtin_functions.cpp
+++ b/src/glsl/builtin_functions.cpp
@@ -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;
+}
+
/** @} */
/******************************************************************************/