[Mesa-dev] [PATCH] mesa: Dump ARB_vp/fp source and IR when MESA_GLSL=dump.

[Ian Romanick]

On 05/11/2014 11:03 PM, Kenneth Graunke wrote:
> As far as I can tell, Mesa hasn't had a convenient way to dump ARB_vp/fp
> source until now.  Using MESA_GLSL=dump is convenient, since it means
> you can use a single environment variable to dump a program's shaders,
> no matter which language they're written in.
> 
> Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>

Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>

> ---
>  src/mesa/main/arbprogram.c | 27 ++++++++++++++++++++++++++-
>  1 file changed, 26 insertions(+), 1 deletion(-)
> 
> I've also got some shader-db patches to take advantage of this.
> 
> diff --git a/src/mesa/main/arbprogram.c b/src/mesa/main/arbprogram.c
> index 247b492..fe8cd6b 100644
> --- a/src/mesa/main/arbprogram.c
> +++ b/src/mesa/main/arbprogram.c
> @@ -38,6 +38,7 @@
>  #include "main/arbprogram.h"
>  #include "program/arbprogparse.h"
>  #include "program/program.h"
> +#include "program/prog_print.h"
>  
>  
>  /**
> @@ -308,6 +309,7 @@ _mesa_ProgramStringARB(GLenum target, GLenum format, GLsizei len,
>                         const GLvoid *string)
>  {
>     struct gl_program *base;
> +   bool failed;
>     GET_CURRENT_CONTEXT(ctx);
>  
>     FLUSH_VERTICES(ctx, _NEW_PROGRAM);
> @@ -341,13 +343,36 @@ _mesa_ProgramStringARB(GLenum target, GLenum format, GLsizei len,
>        return;
>     }
>  
> -   if (ctx->Program.ErrorPos == -1) {
> +   failed = ctx->Program.ErrorPos != -1;
> +
> +   if (!failed) {
>        /* finally, give the program to the driver for translation/checking */
>        if (!ctx->Driver.ProgramStringNotify(ctx, target, base)) {
> +         failed = true;
>           _mesa_error(ctx, GL_INVALID_OPERATION,
>                       "glProgramStringARB(rejected by driver");
                                                              ^
Missing a closing paren, but I guess that isn't your bug.

>        }
>     }
> +
> +   if (ctx->_Shader->Flags & GLSL_DUMP) {
> +      const char *shader_type =
> +         target == GL_FRAGMENT_PROGRAM_ARB ? "fragment" : "vertex";
> +
> +      fprintf(stderr, "ARB_%s_program source for program %d:\n",
> +              shader_type, base->Id);
> +      fprintf(stderr, "%s\n", (const char *) string);
> +
> +      if (failed) {
> +         fprintf(stderr, "ARB_%s_program %d failed to compile.\n",
> +                 shader_type, base->Id);
> +      } else {
> +         fprintf(stderr, "Mesa IR for ARB_%s_program %d:\n",
> +                 shader_type, base->Id);
> +         _mesa_print_program(base);
> +         fprintf(stderr, "\n");
> +      }
> +      fflush(stderr);
> +   }
>  }
>  
>  
>