[Mesa-dev] [PATCH] gallium/util: implement tile code for PIPE_FORMAT_Z32_FLOAT

[Jose Fonseca]

Looks good to me.

Jose

----- Original Message -----
> ---
>  src/gallium/auxiliary/util/u_tile.c |   36
>  +++++++++++++++++++++++++++++++++++
>  1 files changed, 36 insertions(+), 0 deletions(-)
> 
> diff --git a/src/gallium/auxiliary/util/u_tile.c
> b/src/gallium/auxiliary/util/u_tile.c
> index ea4b91f..48e73c4 100644
> --- a/src/gallium/auxiliary/util/u_tile.c
> +++ b/src/gallium/auxiliary/util/u_tile.c
> @@ -679,6 +679,28 @@ pipe_get_tile_z(struct pipe_context *pipe,
>           }
>        }
>        break;
> +   case PIPE_FORMAT_Z32_FLOAT:
> +      {
> +         const float *ptrc = (const float *)(map + y * pt->stride +
> x*4);
> +         for (i = 0; i < h; i++) {
> +            for (j = 0; j < w; j++) {
> +               /* convert float Z to 32-bit Z */
> +               if (ptrc[j] <= 0.0) {
> +                  pDest[j] = 0;
> +               }
> +               else if (ptrc[j] >= 1.0) {
> +                  pDest[j] = 0xffffffff;
> +               }
> +               else {
> +                  double z = ptrc[j] * 0xffffffff;
> +                  pDest[j] = (uint) z;
> +               }
> +            }
> +            pDest += dstStride;
> +            ptrc += pt->stride/4;
> +         }
> +      }
> +      break;
>     default:
>        assert(0);
>     }
> @@ -786,6 +808,20 @@ pipe_put_tile_z(struct pipe_context *pipe,
>           }
>        }
>        break;
> +   case PIPE_FORMAT_Z32_FLOAT:
> +      {
> +         float *pDest = (float *) (map + y * pt->stride + x*2);
> +         for (i = 0; i < h; i++) {
> +            for (j = 0; j < w; j++) {
> +               /* convert 32-bit integer Z to float Z */
> +               const double scale = 1.0 / 0xffffffffU;
> +               pDest[j] = ptrc[j] * scale;
> +            }
> +            pDest += pt->stride/4;
> +            ptrc += srcStride;
> +         }
> +      }
> +      break;
>     default:
>        assert(0);
>     }
> --
> 1.7.3.4
> 
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