[Mesa-dev] [PATCH 3/9] glsl: Create a _mesa_shader_stage_to_abbrev() function.

[Ian Romanick]

On 02/18/2015 09:00 PM, Kenneth Graunke wrote:
> This is similar to _mesa_shader_stage_to_string(), but returns "VS"
> instead of "vertex".
> 
> Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
> ---
>  src/glsl/glsl_parser_extras.cpp | 17 +++++++++++++++++
>  src/glsl/glsl_parser_extras.h   |  3 +++
>  2 files changed, 20 insertions(+)
> 
> diff --git a/src/glsl/glsl_parser_extras.cpp b/src/glsl/glsl_parser_extras.cpp
> index ccdf031..0334e4a 100644
> --- a/src/glsl/glsl_parser_extras.cpp
> +++ b/src/glsl/glsl_parser_extras.cpp
> @@ -376,6 +376,23 @@ _mesa_shader_stage_to_string(unsigned stage)
>     return "unknown";
>  }
>  
> +/**
> + * Translate a gl_shader_stage to a shader stage abbreviation (VS, GS, FS)
> + * for debug printouts and error messages.
> + */
> +const char *
> +_mesa_shader_stage_to_abbrev(unsigned stage)
> +{
> +   switch (stage) {
> +   case MESA_SHADER_VERTEX:   return "VS";
> +   case MESA_SHADER_FRAGMENT: return "FS";
> +   case MESA_SHADER_GEOMETRY: return "GS";

The next patch has some compute bits, should this also do compute?

> +   }
> +
> +   assert(!"Should not get here.");
> +   return "unknown";

      unreachable("Bad shader stage.");

> +}
> +
>  /* This helper function will append the given message to the shader's
>     info log and report it via GL_ARB_debug_output. Per that extension,
>     'type' is one of the enum values classifying the message, and
> diff --git a/src/glsl/glsl_parser_extras.h b/src/glsl/glsl_parser_extras.h
> index 843fdae..6861fac 100644
> --- a/src/glsl/glsl_parser_extras.h
> +++ b/src/glsl/glsl_parser_extras.h
> @@ -576,6 +576,9 @@ extern "C" {
>  extern const char *
>  _mesa_shader_stage_to_string(unsigned stage);
>  
> +extern const char *
> +_mesa_shader_stage_to_abbrev(unsigned stage);
> +
>  extern int glcpp_preprocess(void *ctx, const char **shader, char **info_log,
>                        const struct gl_extensions *extensions, struct gl_context *gl_ctx);
>  
>