glsl2: Add ir_unop_fract as an expression type.
Most backends will prefer seeing this to seeing (a - floor(a)), so
represent it explicitly.
diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp
index c6348ac..548217c 100644
--- a/src/glsl/ir_constant_expression.cpp
+++ b/src/glsl/ir_constant_expression.cpp
@@ -187,6 +187,24 @@
}
break;
+ case ir_unop_fract:
+ for (c = 0; c < ir->operands[0]->type->components(); c++) {
+ switch (ir->type->base_type) {
+ case GLSL_TYPE_UINT:
+ data.u[c] = 0;
+ break;
+ case GLSL_TYPE_INT:
+ data.i[c] = 0;
+ break;
+ case GLSL_TYPE_FLOAT:
+ data.f[c] = op[0]->value.f[c] - floor(op[0]->value.f[c]);
+ break;
+ default:
+ assert(0);
+ }
+ }
+ break;
+
case ir_unop_neg:
for (c = 0; c < ir->operands[0]->type->components(); c++) {
switch (ir->type->base_type) {