KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Implement exp2() and log2(), and make ir_unop_exp and ir_unop_log be base e. 

Making the base e functions IR operations is not a clear win.  i965
doesn't support it, it doesn't look like r600 supports it, but r500
does. It should be easily supportable as a lowering pass, though.
This commit is contained in:
Eric Anholt 2010-03-27 13:56:35 -07:00 committed by Ian Romanick
parent 53afc3609d
commit 01665262e5
3 changed files with 22 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
builtin_function.cpp
View File

@ -76,6 +76,22 @@ generate_log(exec_list *instructions,
generate_unop(instructions, declarations, type, ir_unop_log);
}
static void
generate_exp2(exec_list *instructions,
ir_variable **declarations,
const glsl_type *type)
{
generate_unop(instructions, declarations, type, ir_unop_exp2);
}
static void
generate_log2(exec_list *instructions,
ir_variable **declarations,
const glsl_type *type)
{
generate_unop(instructions, declarations, type, ir_unop_log2);
}
static void
generate_rsq(exec_list *instructions,
ir_variable **declarations,
@ -278,8 +294,8 @@ generate_110_functions(glsl_symbol_table *symtab, exec_list *instructions)
make_gentype_function(symtab, instructions, "pow", 2, generate_pow);
make_gentype_function(symtab, instructions, "exp", 1, generate_exp);
make_gentype_function(symtab, instructions, "log", 1, generate_log);
/* FINISHME: exp2() */
/* FINISHME: log2() */
make_gentype_function(symtab, instructions, "exp2", 1, generate_exp2);
make_gentype_function(symtab, instructions, "log2", 1, generate_log2);
make_gentype_function(symtab, instructions, "sqrt", 1, generate_sqrt);
make_gentype_function(symtab, instructions, "inversesqrt", 1, generate_rsq);
make_gentype_function(symtab, instructions, "abs", 1, generate_abs);

2
ir.h
View File

@ -228,6 +228,8 @@ enum ir_expression_operation {
ir_unop_sqrt,
ir_unop_exp,
ir_unop_log,
ir_unop_exp2,
ir_unop_log2,
ir_unop_f2i, /**< Float-to-integer conversion. */
ir_unop_i2f, /**< Integer-to-float conversion. */
ir_unop_u2f, /**< Unsigned-to-float conversion. */

2
ir_print_visitor.cpp
View File

@ -96,6 +96,8 @@ void ir_print_visitor::visit(ir_expression *ir)
"sqrt",
"exp",
"log",
"exp2",
"log2",
"f2i",
"i2f",
"u2f",