[Mesa-dev] [PATCH 09/18] glsl: Handle patch qualifier on interface blocks.

[Timothy Arceri]

On Mon, 2016-08-01 at 10:29 -0700, Kenneth Graunke wrote:
> Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
> ---
>  src/compiler/glsl/ast_to_hir.cpp         |  4 ++++
>  src/compiler/glsl/glsl_parser.yy         | 11 +++++++++++
>  src/compiler/glsl/glsl_parser_extras.cpp |  3 +++
>  3 files changed, 18 insertions(+)
> 
> diff --git a/src/compiler/glsl/ast_to_hir.cpp
> b/src/compiler/glsl/ast_to_hir.cpp
> index d246745..6273528 100644
> --- a/src/compiler/glsl/ast_to_hir.cpp
> +++ b/src/compiler/glsl/ast_to_hir.cpp
> @@ -7436,10 +7436,12 @@ ast_interface_block::hir(exec_list
> *instructions,
>        _mesa_glsl_error(&loc, state, "geometry shader inputs must be
> arrays");
>     } else if ((state->stage == MESA_SHADER_TESS_CTRL ||
>                 state->stage == MESA_SHADER_TESS_EVAL) &&
> +              !this->layout.flags.q.patch &&
>                this->array_specifier == NULL &&
>                var_mode == ir_var_shader_in) {
>        _mesa_glsl_error(&loc, state, "per-vertex tessellation shader
> inputs must be arrays");
>     } else if (state->stage == MESA_SHADER_TESS_CTRL &&
> +              !this->layout.flags.q.patch &&
>                this->array_specifier == NULL &&
>                var_mode == ir_var_shader_out) {
>        _mesa_glsl_error(&loc, state, "tessellation control shader
> outputs must be arrays");
> @@ -7555,6 +7557,8 @@ ast_interface_block::hir(exec_list
> *instructions,
>        if (var_mode == ir_var_shader_in || var_mode ==
> ir_var_uniform)
>           var->data.read_only = true;
>  
> +      var->data.patch = this->layout.flags.q.patch;
> +
>        if (state->stage == MESA_SHADER_GEOMETRY && var_mode ==
> ir_var_shader_in)
>           handle_geometry_shader_input_decl(state, loc, var);
>        else if ((state->stage == MESA_SHADER_TESS_CTRL ||
> diff --git a/src/compiler/glsl/glsl_parser.yy
> b/src/compiler/glsl/glsl_parser.yy
> index 4ab9e14..d90418e 100644
> --- a/src/compiler/glsl/glsl_parser.yy
> +++ b/src/compiler/glsl/glsl_parser.yy
> @@ -2697,6 +2697,17 @@ interface_qualifier:
>        memset(& $$, 0, sizeof($$));
>        $$.flags.q.buffer = 1;
>     }
> +   | auxiliary_storage_qualifier interface_qualifier
> +   {
> +      if (!$1.flags.q.patch) {
> +         _mesa_glsl_error(&@1, state, "invalid interface
> qualifier");
> +      }
> +      if ($2.has_auxiliary_storage()) {
> +         _mesa_glsl_error(&@1, state, "duplicate patch qualifier");
> +      }
> +      $$ = $2;
> +      $$.flags.q.patch = 1;
> +   }
>     ;
>  
>  instance_name_opt:
> diff --git a/src/compiler/glsl/glsl_parser_extras.cpp
> b/src/compiler/glsl/glsl_parser_extras.cpp
> index 14a5540..2211d97 100644
> --- a/src/compiler/glsl/glsl_parser_extras.cpp
> +++ b/src/compiler/glsl/glsl_parser_extras.cpp
> @@ -929,6 +929,8 @@ _mesa_ast_process_interface_block(YYLTYPE *locp,
>                         "a fragment shader");
>     }
>  
> +   /* error checking for patch qualifier? */

Is this left over? Everything else in the patch looks ok.

> +
>     /* Since block arrays require names, and both features are added
> in
>      * the same language versions, we don't have to explicitly
>      * version-check both things.
> @@ -950,6 +952,7 @@ _mesa_ast_process_interface_block(YYLTYPE *locp,
>     temp_type_qualifier.flags.q.in = true;
>     temp_type_qualifier.flags.q.out = true;
>     temp_type_qualifier.flags.q.buffer = true;
> +   temp_type_qualifier.flags.q.patch = true;
>     interface_type_mask = temp_type_qualifier.flags.i;
>  
>     /* Get the block's interface qualifier.  The interface_qualifier