glsl: Support double loop control

Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

diff --git a/src/glsl/loop_controls.cpp b/src/glsl/loop_controls.cpp
index 1c1d34fefe64d18488fffa2e6704e8188f62a3a8..2459fc1c303393f526147b11cd1ea7a66d72472f 100644 (file)
--- a/src/glsl/loop_controls.cpp
+++ b/src/glsl/loop_controls.cpp
@@ -102,9 +102,10 @@ calculate_iterations(ir_rvalue *from, ir_rvalue *to, ir_rvalue *increment,
       return -1;
 
    if (!iter->type->is_integer()) {
+      const ir_expression_operation op = iter->type->is_double()
+         ? ir_unop_d2i : ir_unop_f2i;
       ir_rvalue *cast =
-        new(mem_ctx) ir_expression(ir_unop_f2i, glsl_type::int_type, iter,
-                                   NULL);
+         new(mem_ctx) ir_expression(op, glsl_type::int_type, iter, NULL);
 
       iter = cast->constant_expression_value();
    }
@@ -134,6 +135,9 @@ calculate_iterations(ir_rvalue *from, ir_rvalue *to, ir_rvalue *increment,
       case GLSL_TYPE_FLOAT:
          iter = new(mem_ctx) ir_constant(float(iter_value + bias[i]));
          break;
+      case GLSL_TYPE_DOUBLE:
+         iter = new(mem_ctx) ir_constant(double(iter_value + bias[i]));
+         break;
       default:
           unreachable(!"Unsupported type for loop iterator.");
       }