[Intel-gfx] [PATCH] Check display stride limit when allocate front buffer

[Eric Anholt]

On Wed, 2008-09-10 at 10:33 +0800, Zhenyu Wang wrote:
> Subject: [PATCH] Check display stride limit when allocate front buffer
> 
> ---
>  src/i830_memory.c |   27 +++++++++++++++++++++++++++
>  1 files changed, 27 insertions(+), 0 deletions(-)
> 
> diff --git a/src/i830_memory.c b/src/i830_memory.c
> index 443cc4e..2119012 100644
> --- a/src/i830_memory.c
> +++ b/src/i830_memory.c
> @@ -158,6 +158,27 @@ i830_get_fence_size(ScrnInfoPtr pScrn, unsigned long size)
>  }
>  
>  static Bool
> +i830_display_stride_ok(ScrnInfoPtr pScrn, int stride, Bool tiling)
> +{
> +    I830Ptr pI830 = I830PTR(pScrn);
> +    int limit = KB(32);
> +
> +    if ((IS_845G(pI830) || IS_I85X(pI830)) && tiling)
> +	limit = KB(8);

For 855 and 865 the limit I see for DSP[AB]STRIDE in the docs is 8kb,
always (though, of course, 865 doesn't have B).

-- 
Eric Anholt
eric at anholt.net                         eric.anholt at intel.com


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