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Add support for builtin radians() and degrees().

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Eric Anholt 2010-03-28 01:55:38 -07:00 • committed by Ian Romanick
parent 78fe3c9150
commit d1e31952ed
1 changed files with 37 additions and 2 deletions
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39
builtin_function.cpp
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@ -22,6 +22,7 @@
*/
#include <stdlib.h>
#include <math.h>
#include "glsl_symbol_table.h"
#include "glsl_parser_extras.h"
#include "glsl_types.h"
@ -60,6 +61,40 @@ generate_binop(exec_list *instructions,
instructions->push_tail(inst);
}
static void
generate_radians(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;
result = new ir_expression(ir_binop_mul, type,
arg,
new ir_constant((float)(M_PI / 180.0)));
ir_instruction *inst = new ir_assignment(retval, result, NULL);
instructions->push_tail(inst);
}
static void
generate_degrees(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;
result = new ir_expression(ir_binop_mul, type,
arg,
new ir_constant((float)(180.0 / M_PI)));
ir_instruction *inst = new ir_assignment(retval, result, NULL);
instructions->push_tail(inst);
}
static void
generate_exp(exec_list *instructions,
ir_variable **declarations,
@ -324,8 +359,8 @@ generate_dot_functions(glsl_symbol_table *symtab, exec_list *instructions)
void
generate_110_functions(glsl_symbol_table *symtab, exec_list *instructions)
{
/* FINISHME: radians() */
/* FINISHME: degrees() */
make_gentype_function(symtab, instructions, "radians", 1, generate_radians);
make_gentype_function(symtab, instructions, "degrees", 1, generate_degrees);
/* FINISHME: sin() */
/* FINISHME: cos() */
/* FINISHME: tan() */