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-rw-r--r--src/glsl/ir_constant_expression.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp
index c4a416aa355..83d1b34bed6 100644
--- a/src/glsl/ir_constant_expression.cpp
+++ b/src/glsl/ir_constant_expression.cpp
@@ -925,7 +925,7 @@ ir_call::constant_expression_value()
} else if (strcmp(callee, "inversesqrt") == 0) {
expr = new(mem_ctx) ir_expression(ir_unop_rsq, type, op[0], NULL);
} else if (strcmp(callee, "length") == 0) {
- return NULL; /* FINISHME: implement this */
+ return new(mem_ctx) ir_constant(sqrtf(dot(op[0], op[0])));
} else if (strcmp(callee, "lessThan") == 0) {
assert(op[0]->type->is_vector() && op[1] && op[1]->type->is_vector());
for (unsigned c = 0; c < op[0]->type->components(); c++) {