glsl: Create a _mesa_shader_stage_to_abbrev() function.

This is similar to _mesa_shader_stage_to_string(), but returns "VS"
instead of "vertex".

v2: Use unreachable() and add MESA_SHADER_COMPUTE (requested by Ian).

Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Kristian Høgsberg <[email protected]>
Reviewed-by: Anuj Phogat <[email protected]>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/glsl/glsl_parser_extras.h b/src/glsl/glsl_parser_extras.h
index ea53270eddc..0975c86ed7a 100644
--- a/src/glsl/glsl_parser_extras.h
+++ b/src/glsl/glsl_parser_extras.h
@@ -583,6 +583,9 @@ 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);