From: Kenneth Graunke <kenneth@whitecape.org>
Date: Thu, 22 Jul 2010 00:50:50 +0000 (-0700)
Subject: ir_constant_expression: Add support for the "tan" builtin.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=9c9f8b2d69094fb308de0d6a28bcd60cdf8aedf6;p=mesa.git

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

diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp
index b7ceefc393d..bcf87e000f7 100644
--- a/src/glsl/ir_constant_expression.cpp
+++ b/src/glsl/ir_constant_expression.cpp
@@ -926,7 +926,9 @@ ir_call::constant_expression_value()
    } else if (strcmp(callee, "step") == 0) {
       return NULL; /* FINISHME: implement this */
    } else if (strcmp(callee, "tan") == 0) {
-      return NULL; /* FINISHME: implement this */
+      assert(op[0]->type->is_float());
+      for (unsigned c = 0; c < op[0]->type->components(); c++)
+	 data.f[c] = tanf(op[0]->value.f[c]);
    } else if (strcmp(callee, "tanh") == 0) {
       return NULL; /* FINISHME: implement this */
    } else if (strcmp(callee, "transpose") == 0) {