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-rw-r--r--src/glsl/ir_constant_expression.cpp4
1 files changed, 3 insertions, 1 deletions
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) {