Module: Mesa Branch: master Commit: ff0f17da1446e7aa965e06c04a6ad5a55d95463d URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=ff0f17da1446e7aa965e06c04a6ad5a55d95463d
Author: Samuel Pitoiset <[email protected]> Date: Wed Nov 29 14:48:32 2017 +0100 radv: do not allocate CMASK or DCC for small surfaces The idea is ported from RadeonSI, but using 512x512 instead of 256x256 seems slightly better. This improves dota2 performance by +2%. Signed-off-by: Samuel Pitoiset <[email protected]> Reviewed-by: Dave Airlie <[email protected]> Tested-by: Dieter Nützel <[email protected]> --- src/amd/vulkan/radv_image.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/amd/vulkan/radv_image.c b/src/amd/vulkan/radv_image.c index b145e81f82..ee03a1dc6a 100644 --- a/src/amd/vulkan/radv_image.c +++ b/src/amd/vulkan/radv_image.c @@ -806,6 +806,16 @@ radv_image_alloc_htile(struct radv_image *image) static inline bool radv_image_can_enable_dcc_or_cmask(struct radv_image *image) { + if (image->info.samples <= 1 && + image->info.width <= 512 && image->info.height <= 512) { + /* Do not enable CMASK or DCC for small surfaces where the cost + * of the eliminate pass can be higher than the benefit of fast + * clear. RadeonSI does this, but the image threshold is + * different. + */ + return false; + } + return image->usage & VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT && (image->exclusive || image->queue_family_mask == 1); } _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
