[Mesa-dev] [PATCH 06/40] glsl: add helper to convert pointers to uint64_t

[Nicolai Hähnle]

On 07.02.2017 04:42, Timothy Arceri wrote:
> From: Timothy Arceri <timothy.arceri at collabora.com>
>
> This will be used to store all pointers in the cache as 64bit ints
> allowing us to avoid issues when a 32bit program reads a cached
> shader that was created by a 64bit application.
> ---
>  src/compiler/glsl/shader_cache.h | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>
> diff --git a/src/compiler/glsl/shader_cache.h b/src/compiler/glsl/shader_cache.h
> index 8bd0a3c..1596c33 100644
> --- a/src/compiler/glsl/shader_cache.h
> +++ b/src/compiler/glsl/shader_cache.h
> @@ -27,6 +27,16 @@
>
>  #include "util/disk_cache.h"
>
> +static uint64_t inline
> +ptr_to_uint64_t(void *ptr)
> +{
> +   uint64_t ptr_int = (uint64_t) ptr;
> +#if __i386__
> +   ptr_int &= 0xFFFFFFFF;
> +#endif

Is the bit-wise and here really necessary?

Nicolai

> +   return ptr_int;
> +}
> +
>  void
>  shader_cache_write_program_metadata(struct gl_context *ctx,
>                                      struct gl_shader_program *prog);
>