diff options
| -rw-r--r-- | src/glsl/ir_constant_expression.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp index f811fd1383e..7fa5a09d417 100644 --- a/src/glsl/ir_constant_expression.cpp +++ b/src/glsl/ir_constant_expression.cpp @@ -1397,6 +1397,23 @@ ir_expression::constant_expression_value(struct hash_table *variable_context) break; } + case ir_binop_bfm: { + int bits = op[0]->value.i[0]; + int offset = op[1]->value.i[0]; + + for (unsigned c = 0; c < components; c++) { + if (bits == 0) + data.u[c] = op[0]->value.u[c]; + else if (offset < 0 || bits < 0) + data.u[c] = 0; /* Undefined for bitfieldInsert, per spec. */ + else if (offset + bits > 32) + data.u[c] = 0; /* Undefined for bitfieldInsert, per spec. */ + else + data.u[c] = ((1 << bits) - 1) << offset; + } + break; + } + case ir_binop_ldexp: for (unsigned c = 0; c < components; c++) { data.f[c] = ldexp(op[0]->value.f[c], op[1]->value.i[c]); |