diff options
| -rw-r--r-- | src/glsl/ast_to_hir.cpp | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp index a2edb6a27cf..e5a21fd8168 100644 --- a/src/glsl/ast_to_hir.cpp +++ b/src/glsl/ast_to_hir.cpp @@ -2303,6 +2303,41 @@ ast_declarator_list::hir(exec_list *instructions, } + /* Interpolation qualifiers can only apply to vertex shader outputs and + * fragment shader inputs. + * + * From page 29 (page 35 of the PDF) of the GLSL 1.30 spec: + * "Outputs from a vertex shader (out) and inputs to a fragment + * shader (in) can be further qualified with one or more of these + * interpolation qualifiers" + */ + if (state->language_version >= 130 + && this->type->qualifier.has_interpolation()) { + + const char *i = this->type->qualifier.interpolation_string(); + assert(i != NULL); + + switch (state->target) { + case vertex_shader: + if (this->type->qualifier.flags.q.in) { + _mesa_glsl_error(&loc, state, + "qualifier '%s' cannot be applied to vertex " + "shader inputs", i); + } + break; + case fragment_shader: + if (this->type->qualifier.flags.q.out) { + _mesa_glsl_error(&loc, state, + "qualifier '%s' cannot be applied to fragment " + "shader outputs", i); + } + break; + default: + assert(0); + } + } + + /* Process the initializer and add its instructions to a temporary * list. This list will be added to the instruction stream (below) after * the declaration is added. This is done because in some cases (such as |