From 607fb0f13df8e328ed5d173c98fc250449c55aee Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Mon, 9 May 2016 18:11:00 -0700 Subject: [PATCH] i965: Reduce the SIMD8 GS push constant threshold from 32 to 24. Three Shadow of Mordor geometry shaders increase by a single instruction, but the number of spills/fills in Orbital Explorer is reduced from 194:1279 -> 82:454. No other programs are affected. Signed-off-by: Kenneth Graunke Reviewed-by: Jordan Justen --- src/mesa/drivers/dri/i965/brw_fs.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index 2a542b8e510..89b30c7bfb8 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -5229,8 +5229,8 @@ fs_visitor::setup_gs_payload() payload.num_regs++; } - /* Use a maximum of 32 registers for push-model inputs. */ - const unsigned max_push_components = 32; + /* Use a maximum of 24 registers for push-model inputs. */ + const unsigned max_push_components = 24; /* If pushing our inputs would take too many registers, reduce the URB read * length (which is in HWords, or 8 registers), and resort to pulling. -- 2.30.2