From b43f40166cdaa13a19ae8db015367811aa5a5366 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marek=20Ol=C5=A1=C3=A1k?= Date: Sun, 7 Mar 2021 06:48:55 -0500 Subject: [PATCH] ac/surface: select best swizzle mode for 3D sampler performance Reviewed-by: Pierre-Eric Pelloux-Prayer Part-of: --- src/amd/common/ac_surface.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/src/amd/common/ac_surface.c b/src/amd/common/ac_surface.c index fd534b382e4..9f7ab8162ce 100644 --- a/src/amd/common/ac_surface.c +++ b/src/amd/common/ac_surface.c @@ -1567,6 +1567,23 @@ static int gfx9_get_preferred_swizzle_mode(ADDR_HANDLE addrlib, struct radeon_su sin.preferredSwSet.sw_R = 1; } + if (in->resourceType == ADDR_RSRC_TEX_3D && in->numSlices > 1) { + /* 3D textures should use S swizzle modes for the best performance. + * THe only exception is 3D render targets, which prefer 64KB_D_X. + * + * 3D texture sampler performance with a very large 3D texture: + * ADDR_SW_64KB_R_X = 19 FPS (DCC on), 26 FPS (DCC off) + * ADDR_SW_64KB_Z_X = 25 FPS + * ADDR_SW_64KB_D_X = 53 FPS + * ADDR_SW_4KB_S = 53 FPS + * ADDR_SW_64KB_S = 53 FPS + * ADDR_SW_64KB_S_T = 61 FPS + * ADDR_SW_4KB_S_X = 63 FPS + * ADDR_SW_64KB_S_X = 62 FPS + */ + sin.preferredSwSet.sw_S = 1; + } + ret = Addr2GetPreferredSurfaceSetting(addrlib, &sin, &sout); if (ret != ADDR_OK) return ret;