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Implement dot() builtin.

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This commit is contained in:
Eric Anholt
2010-03-27 14:04:43 -07:00
committed by Ian Romanick
parent 01665262e5
commit 76a91e1afb
1 changed files with 41 additions and 1 deletions
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42
builtin_function.cpp
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@@ -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() */