On 05/19/2011 01:19 PM, Chad Versace wrote:
> On 05/19/2011 05:13 AM, Ian Romanick wrote:
>> From: Ian Romanick
>>
>> Since RowStride might be negative, we want a signed result. On 64-bit
>> platforms, an unsigned 32-bit result added to a 64-bit pointer will
>> give the wrong answer.
>
> Looks li
On 05/19/2011 05:13 AM, Ian Romanick wrote:
> From: Ian Romanick
>
> Since RowStride might be negative, we want a signed result. On 64-bit
> platforms, an unsigned 32-bit result added to a 64-bit pointer will
> give the wrong answer.
>
> For x = y = 50, RowStride = -128, and format bytes = 4, t
On Thu, 2011-05-19 at 14:13 +0200, Ian Romanick wrote:
> From: Ian Romanick
>
> Since RowStride might be negative, we want a signed result. On 64-bit
> platforms, an unsigned 32-bit result added to a 64-bit pointer will
> give the wrong answer.
Hah, saw this just as I sent my patch. Let's hear
From: Ian Romanick
Since RowStride might be negative, we want a signed result. On 64-bit
platforms, an unsigned 32-bit result added to a 64-bit pointer will
give the wrong answer.
For x = y = 50, RowStride = -128, and format bytes = 4, the difference is:
Breakpoint 1, get_pointer_generic (ctx=
