Re: [Mesa-dev] [PATCH 2/4 v4] i965: Implement CopyTexSubImage2D via BLORP (and use it by default).

2013-02-06 Thread Paul Berry
On 5 February 2013 22:40, Kenneth Graunke wrote: > The BLT engine has many limitations. Currently, it can only blit > X-tiled buffers (since we don't have a kernel API to whack the BLT > tiling mode register), which means all depth/stencil operations get > punted to meta code, which can be very

[Mesa-dev] [PATCH 2/4 v4] i965: Implement CopyTexSubImage2D via BLORP (and use it by default).

2013-02-05 Thread Kenneth Graunke
The BLT engine has many limitations. Currently, it can only blit X-tiled buffers (since we don't have a kernel API to whack the BLT tiling mode register), which means all depth/stencil operations get punted to meta code, which can be very CPU-intensive. Even if we used the BLT engine, it can't bl