ir_constant_expression: Add support for ir_unop_trunc.

This uses a C99 function.
2010-07-08 23:21:36 -07:00
parent cb63929df4
commit 323d909ab2
1 changed files with 7 additions and 0 deletions
--- a/src/glsl/ir_constant_expression.cpp
+++ b/src/glsl/ir_constant_expression.cpp
@@ -206,6 +206,13 @@ ir_constant_visitor::visit(ir_expression *ir)
      }
      break;

+   case ir_unop_trunc:
+      assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
+      for (unsigned c = 0; c < ir->operands[0]->type->components(); c++) {
+	 data.f[c] = truncf(op[0]->value.f[c]);
+      }
+      break;
+
   case ir_unop_fract:
      for (unsigned c = 0; c < ir->operands[0]->type->components(); c++) {
 	 switch (ir->type->base_type) {