---
src/glsl/opt_minmax.cpp | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/src/glsl/opt_minmax.cpp b/src/glsl/opt_minmax.cpp
index 8d63d96..f066b45 100644
--- a/src/glsl/opt_minmax.cpp
+++ b/src/glsl/opt_minmax.cpp
@@ -457,6 +457,22 @@ get_range(ir_rvalue *rval)
// Get the range of the addition of op0*op1 and op2
return resolv_add_range(r0, r1);
+ case ir_triop_lrp:
+ r0 = get_range(expr->operands[2]);
+
+ // Get the range of (1-a)
+ r1 = resolv_add_range(get_range(new(mem_ctx) ir_constant(1.0f)),
+ get_range(neg(expr->operands[2])->as_rvalue()));
+
+ // Get the range of (1-a)*y
+ r1 = resolv_mul_range(r1, get_range(expr->operands[2]));
+
+ // Get the range of a*x
+ r0 = resolv_mul_range(r0, get_range(expr->operands[0]));
+
+ // Add the two parts together
+ return resolv_add_range(r0, r1);
+
default:
break;
}
--
2.2.1
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