diff options
Diffstat (limited to 'src/compiler/glsl/ast_array_index.cpp')
| -rw-r--r-- | src/compiler/glsl/ast_array_index.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/compiler/glsl/ast_array_index.cpp b/src/compiler/glsl/ast_array_index.cpp index e29dafb7907..dfa44b703d4 100644 --- a/src/compiler/glsl/ast_array_index.cpp +++ b/src/compiler/glsl/ast_array_index.cpp @@ -233,6 +233,20 @@ _mesa_ast_array_index_to_hir(void *mem_ctx, else if (array->variable_referenced()->data.mode != ir_var_shader_storage) { _mesa_glsl_error(&loc, state, "unsized array index must be constant"); + } else { + /* Unsized array non-constant indexing on SSBO is allowed only for + * the last member of the SSBO definition. + */ + ir_variable *var = array->variable_referenced(); + const glsl_type *iface_type = var->get_interface_type(); + int field_index = iface_type->field_index(var->name); + /* Field index can be < 0 for instance arrays */ + if (field_index >= 0 && + field_index != (int) iface_type->length - 1) { + _mesa_glsl_error(&loc, state, "Indirect access on unsized " + "array is limited to the last member of " + "SSBO."); + } } } else if (array->type->without_array()->is_interface() && ((array->variable_referenced()->data.mode == ir_var_uniform |