From 76a91e1afbd24dbbdaab1b9dde8540906376cb18 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Sat, 27 Mar 2010 14:04:43 -0700 Subject: [PATCH] Implement dot() builtin. --- builtin_function.cpp | 42 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-) diff --git a/builtin_function.cpp b/builtin_function.cpp index ef6af2052b9..edb33dd8f35 100644 --- a/builtin_function.cpp +++ b/builtin_function.cpp @@ -279,6 +279,46 @@ generate_length_functions(glsl_symbol_table *symtab, exec_list *instructions) 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 @@ generate_110_functions(glsl_symbol_table *symtab, exec_list *instructions) /* FINISHME: step() */ generate_length_functions(symtab, instructions); /* FINISHME: distance() */ - /* FINISHME: dot() */ + generate_dot_functions(symtab, instructions); /* FINISHME: cross() */ /* FINISHME: normalize() */ /* FINISHME: ftransform() */ -- 2.30.2