ir_constant_expression: Add support for the "tanh" builtin.

diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp
index bcf87e0..aedc661 100644 (file)
--- a/src/glsl/ir_constant_expression.cpp
+++ b/src/glsl/ir_constant_expression.cpp
@@ -930,7 +930,9 @@ ir_call::constant_expression_value()
       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 */
+      assert(op[0]->type->is_float());
+      for (unsigned c = 0; c < op[0]->type->components(); c++)
+        data.f[c] = tanhf(op[0]->value.f[c]);
    } else if (strcmp(callee, "transpose") == 0) {
       return NULL; /* FINISHME: implement this */
    } else {