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glsl: Generate code for constant binary expressions that combine vector and scalar operands

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v2: 'for (a, b) in d' => 'for a, b in d'.  Suggested by Dylan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>
This commit is contained in:
Ian Romanick
2016-07-11 11:05:13 -07:00
parent f81b1c7fa7
commit 74e335c762
1 changed files with 51 additions and 15 deletions
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66
src/compiler/glsl/ir_expression_operation.py
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@@ -141,9 +141,32 @@ constant_template2 = mako.template.Template("""\
data.${op.dest_type.union_field}[c] = ${op.get_c_expression(op.source_types)};
break;""")
# This template is for binary operations that can operate on some combination
# of scalar and vector operands.
constant_template_vector_scalar = mako.template.Template("""\
case ${op.get_enum_name()}:
assert(op[0]->type == op[1]->type || op0_scalar || op1_scalar);
for (unsigned c = 0, c0 = 0, c1 = 0;
c < components;
c0 += c0_inc, c1 += c1_inc, c++) {
switch (op[0]->type->base_type) {
% for dst_type, src_types in op.signatures():
case ${src_types[0].glsl_type}:
data.${dst_type.union_field}[c] = ${op.get_c_expression(src_types, ("c0", "c1"))};
break;
% endfor
default:
assert(0);
}
}
break;""")
vector_scalar_operation = "vector-scalar"
class operation(object):
def __init__(self, name, num_operands, printable_name = None, source_types = None, dest_type = None, c_expression = None):
def __init__(self, name, num_operands, printable_name = None, source_types = None, dest_type = None, c_expression = None, flags = None):
self.name = name
self.num_operands = num_operands
@@ -162,6 +185,13 @@ class operation(object):
else:
self.c_expression = c_expression
if flags is None:
self.flags = frozenset()
elif isinstance(flags, str):
self.flags = frozenset([flags])
else:
self.flags = frozenset(flags)
def get_enum_name(self):
return "ir_{}op_{}".format(("un", "bin", "tri", "quad")[self.num_operands-1], self.name)
@@ -181,19 +211,22 @@ class operation(object):
else:
return constant_template3.render(op=self)
elif self.num_operands == 2:
if len(self.source_types) == 1:
if vector_scalar_operation in self.flags:
return constant_template_vector_scalar.render(op=self)
elif len(self.source_types) == 1:
return constant_template0.render(op=self)
return None
def get_c_expression(self, types):
src0 = "op[0]->value.{}[c]".format(types[0].union_field)
src1 = "op[1]->value.{}[c]".format(types[1].union_field) if len(types) >= 2 else "ERROR"
def get_c_expression(self, types, indices=("c", "c")):
src0 = "op[0]->value.{}[{}]".format(types[0].union_field, indices[0])
src1 = "op[1]->value.{}[{}]".format(types[1].union_field, indices[1]) if len(types) >= 2 else "ERROR"
expr = self.c_expression[types[0].union_field] if types[0].union_field in self.c_expression else self.c_expression['default']
return expr.format(src0=src0)
return expr.format(src0=src0,
src1=src1)
def signatures(self):
@@ -329,12 +362,12 @@ ir_expression_operation = [
operation("vote_all", 1),
operation("vote_eq", 1),
operation("add", 2, printable_name="+"),
operation("sub", 2, printable_name="-"),
operation("add", 2, printable_name="+", source_types=numeric_types, c_expression="{src0} + {src1}", flags=vector_scalar_operation),
operation("sub", 2, printable_name="-", source_types=numeric_types, c_expression="{src0} - {src1}", flags=vector_scalar_operation),
# "Floating-point or low 32-bit integer multiply."
operation("mul", 2, printable_name="*"),
operation("imul_high", 2), # Calculates the high 32-bits of a 64-bit multiply.
operation("div", 2, printable_name="/"),
operation("div", 2, printable_name="/", source_types=numeric_types, c_expression={'u': "{src1} == 0 ? 0 : {src0} / {src1}", 'i': "{src1} == 0 ? 0 : {src0} / {src1}", 'default': "{src0} / {src1}"}, flags=vector_scalar_operation),
# Returns the carry resulting from the addition of the two arguments.
operation("carry", 2),
@@ -344,7 +377,10 @@ ir_expression_operation = [
operation("borrow", 2),
# Either (vector % vector) or (vector % scalar)
operation("mod", 2, printable_name="%"),
#
# We don't use fmod because it rounds toward zero; GLSL specifies the use
# of floor.
operation("mod", 2, printable_name="%", source_types=numeric_types, c_expression={'u': "{src1} == 0 ? 0 : {src0} % {src1}", 'i': "{src1} == 0 ? 0 : {src0} % {src1}", 'f': "{src0} - {src1} * floorf({src0} / {src1})", 'd': "{src0} - {src1} * floor({src0} / {src1})"}, flags=vector_scalar_operation),
# Binary comparison operators which return a boolean vector.
# The type of both operands must be equal.
@@ -366,17 +402,17 @@ ir_expression_operation = [
# Bit-wise binary operations.
operation("lshift", 2, printable_name="<<"),
operation("rshift", 2, printable_name=">>"),
operation("bit_and", 2, printable_name="&"),
operation("bit_xor", 2, printable_name="^"),
operation("bit_or", 2, printable_name="|"),
operation("bit_and", 2, printable_name="&", source_types=integer_types, c_expression="{src0} & {src1}", flags=vector_scalar_operation),
operation("bit_xor", 2, printable_name="^", source_types=integer_types, c_expression="{src0} ^ {src1}", flags=vector_scalar_operation),
operation("bit_or", 2, printable_name="|", source_types=integer_types, c_expression="{src0} | {src1}", flags=vector_scalar_operation),
operation("logic_and", 2, printable_name="&&", source_types=(bool_type,), c_expression="{src0} && {src1}"),
operation("logic_xor", 2, printable_name="^^", source_types=(bool_type,), c_expression="{src0} != {src1}"),
operation("logic_or", 2, printable_name="||", source_types=(bool_type,), c_expression="{src0} || {src1}"),
operation("dot", 2),
operation("min", 2),
operation("max", 2),
operation("min", 2, source_types=numeric_types, c_expression="MIN2({src0}, {src1})", flags=vector_scalar_operation),
operation("max", 2, source_types=numeric_types, c_expression="MAX2({src0}, {src1})", flags=vector_scalar_operation),
operation("pow", 2, source_types=(float_type,), c_expression="powf({src0}, {src1})"),