Merge pull request #1210 from sanikoyes/Pr-shader-refract

Pr-shader-add-missing-function-refract

drivers/gles2/shader_compiler_gles2.cpp

@@ -690,6 +690,7 @@ ShaderCompilerGLES2::ShaderCompilerGLES2() {
 	replace_table["cross" ]="cross";
 	replace_table["normalize"]= "normalize";
 	replace_table["reflect"]= "reflect";
+	replace_table["refract"]= "refract";
 	replace_table["tex"]= "tex";
 	replace_table["texa"]= "texa";
 	replace_table["tex2"]= "tex2";

servers/visual/shader_language.cpp

@@ -900,6 +900,7 @@ const ShaderLanguage::IntrinsicFuncDef ShaderLanguage::intrinsic_func_defs[]={
 	{"normalize",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
 	{"normalize",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
 	{"reflect",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
+	{"refract",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
 	//intrinsics - texture
 	{"tex",TYPE_VEC4,{TYPE_TEXTURE,TYPE_VEC2,TYPE_VOID}},
 	{"texcube",TYPE_VEC4,{TYPE_CUBEMAP,TYPE_VEC3,TYPE_VOID}},