[Mesa-dev] [PATCH 1/3] i965: Increase the number of array texture levels to the hardware limit.

[Kenneth Graunke]

On 01/09/2012 06:04 PM, Eric Anholt wrote:
> The EXT_texture_array required only 64, but GL 3.0 required 256.
> Since we're already exposing values that can get us way beyond our
> ability to map the single object directly, go ahead and expose all the
> way to hardware limits.
>
> Tested with new piglit EXT_texture_array/maxlayers on gen7.
> ---
>   src/mesa/drivers/dri/i965/brw_context.c |   11 ++++++-----
>   1 files changed, 6 insertions(+), 5 deletions(-)
>
> diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
> index 48c141c..087e5a2 100644
> --- a/src/mesa/drivers/dri/i965/brw_context.c
> +++ b/src/mesa/drivers/dri/i965/brw_context.c
> @@ -178,11 +178,12 @@ brwCreateContext(int api,
>   	   ctx->Const.MaxTextureLevels = MAX_TEXTURE_LEVELS;
>      ctx->Const.Max3DTextureLevels = 9;
>      ctx->Const.MaxCubeTextureLevels = 12;
> -   /* minimum maximum.  Users are likely to run into memory problems
> -    * even at this size, since 64 * 2048 * 2048 * 4 = 1GB and we can't
> -    * address that much.
> -    */
> -   ctx->Const.MaxArrayTextureLayers = 64;
> +
> +   if (intel->gen>= 7)
> +      ctx->Const.MaxArrayTextureLayers = 2048;
> +   else
> +      ctx->Const.MaxArrayTextureLayers = 512;
> +
>      ctx->Const.MaxTextureRectSize = (1<<12);
>
>      ctx->Const.MaxTextureMaxAnisotropy = 16.0;

For the series:
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>