Implement dot() builtin.
diff --git a/builtin_function.cpp b/builtin_function.cpp
index ef6af20..edb33dd 100644
--- a/builtin_function.cpp
+++ b/builtin_function.cpp
@@ -279,6 +279,46 @@
float_type, vec4_type);
}
+static void
+generate_dot(exec_list *instructions,
+ ir_variable **declarations,
+ const glsl_type *type)
+{
+ ir_dereference *const retval = new ir_dereference(declarations[16]);
+ ir_dereference *const arg = new ir_dereference(declarations[0]);
+ ir_rvalue *result;
+
+ (void)type;
+
+ result = new ir_expression(ir_binop_dot, glsl_type::float_type, arg, arg);
+
+ ir_instruction *inst = new ir_assignment(retval, result, NULL);
+ instructions->push_tail(inst);
+}
+
+void
+generate_dot_functions(glsl_symbol_table *symtab, exec_list *instructions)
+{
+ const char *name = "dot";
+ ir_function *const f = new ir_function(name);
+ const glsl_type *float_type = glsl_type::float_type;
+ const glsl_type *vec2_type = glsl_type::get_instance(GLSL_TYPE_FLOAT, 2, 1);
+ const glsl_type *vec3_type = glsl_type::get_instance(GLSL_TYPE_FLOAT, 3, 1);
+ const glsl_type *vec4_type = glsl_type::get_instance(GLSL_TYPE_FLOAT, 4, 1);
+
+ bool added = symtab->add_function(name, f);
+ assert(added);
+
+ generate_function_instance(f, name, instructions, 1, generate_dot,
+ float_type, float_type);
+ generate_function_instance(f, name, instructions, 1, generate_dot,
+ float_type, vec2_type);
+ generate_function_instance(f, name, instructions, 1, generate_dot,
+ float_type, vec3_type);
+ generate_function_instance(f, name, instructions, 1, generate_dot,
+ float_type, vec4_type);
+}
+
void
generate_110_functions(glsl_symbol_table *symtab, exec_list *instructions)
{
@@ -321,7 +361,7 @@
/* FINISHME: step() */
generate_length_functions(symtab, instructions);
/* FINISHME: distance() */
- /* FINISHME: dot() */
+ generate_dot_functions(symtab, instructions);
/* FINISHME: cross() */
/* FINISHME: normalize() */
/* FINISHME: ftransform() */