summaryrefslogtreecommitdiffstats
path: root/src/compiler/glsl
diff options
context:
space:
mode:
authorIan Romanick <[email protected]>2016-07-12 17:49:02 -0700
committerIan Romanick <[email protected]>2016-08-30 16:28:01 -0700
commit54ec6e1b8b65004f3aa2acd3eb45b849d24ad8f6 (patch)
tree7b72b845ae98c9629507324d3ed4e632a4f596ff /src/compiler/glsl
parent6d5fe1815c96b849aaf08f31c11d9ad4fe2b4769 (diff)
glsl: Extract ir_binop_ldexp implementation to a separate function
Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
Diffstat (limited to 'src/compiler/glsl')
-rw-r--r--src/compiler/glsl/ir_constant_expression.cpp39
1 files changed, 28 insertions, 11 deletions
diff --git a/src/compiler/glsl/ir_constant_expression.cpp b/src/compiler/glsl/ir_constant_expression.cpp
index a032ac6d4d5..442db760045 100644
--- a/src/compiler/glsl/ir_constant_expression.cpp
+++ b/src/compiler/glsl/ir_constant_expression.cpp
@@ -519,6 +519,24 @@ find_msb_int(int32_t v)
return find_msb_uint(v < 0 ? ~v : v);
}
+static float
+ldexpf_flush_subnormal(float x, int exp)
+{
+ const float result = ldexpf(x, exp);
+
+ /* Flush subnormal values to zero. */
+ return !isnormal(result) ? copysignf(0.0f, x) : result;
+}
+
+static double
+ldexp_flush_subnormal(double x, int exp)
+{
+ const double result = ldexp(x, exp);
+
+ /* Flush subnormal values to zero. */
+ return !isnormal(result) ? copysign(0.0, x) : result;
+}
+
ir_constant *
ir_expression::constant_expression_value(struct hash_table *variable_context)
{
@@ -1617,17 +1635,16 @@ ir_expression::constant_expression_value(struct hash_table *variable_context)
}
case ir_binop_ldexp:
- for (unsigned c = 0; c < components; c++) {
- if (op[0]->type->base_type == GLSL_TYPE_DOUBLE) {
- data.d[c] = ldexp(op[0]->value.d[c], op[1]->value.i[c]);
- /* Flush subnormal values to zero. */
- if (!isnormal(data.d[c]))
- data.d[c] = copysign(0.0, op[0]->value.d[c]);
- } else {
- data.f[c] = ldexpf(op[0]->value.f[c], op[1]->value.i[c]);
- /* Flush subnormal values to zero. */
- if (!isnormal(data.f[c]))
- data.f[c] = copysignf(0.0f, op[0]->value.f[c]);
+ for (unsigned c = 0; c < op[0]->type->components(); c++) {
+ switch (this->type->base_type) {
+ case GLSL_TYPE_FLOAT:
+ data.f[c] = ldexpf_flush_subnormal(op[0]->value.f[c], op[1]->value.i[c]);
+ break;
+ case GLSL_TYPE_DOUBLE:
+ data.d[c] = ldexp_flush_subnormal(op[0]->value.d[c], op[1]->value.i[c]);
+ break;
+ default:
+ assert(0);
}
}
break;