glsl: Add support for int -> uint implicit conversions

This is required for ARB_gpu_shader5.

Signed-off-by: Chris Forbes <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index 659e8cb1145..d1c77f1ec82 100644
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -176,6 +176,14 @@ get_conversion_operation(const glsl_type *to, const glsl_type *from,
       default: return (ir_expression_operation)0;
       }
 
+   case GLSL_TYPE_UINT:
+      if (!state->is_version(400, 0) && !state->ARB_gpu_shader5_enable)
+         return (ir_expression_operation)0;
+      switch (from->base_type) {
+         case GLSL_TYPE_INT: return ir_unop_i2u;
+         default: return (ir_expression_operation)0;
+      }
+
    default: return (ir_expression_operation)0;
    }
 }