From: Kenneth Graunke <kenneth@whitecape.org>
Date: Thu, 22 Jul 2010 01:26:00 +0000 (-0700)
Subject: ir_constant_expression: Add support for the "length" builtin.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5489ad086f77e548905c98ccd27cd626d706d5f9;p=mesa.git

ir_constant_expression: Add support for the "length" builtin.
---

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++) {